diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a9b0213
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,77 @@
+# ========================
+# LaTeX 编译产物（排除）
+# ========================
+
+# DVI 输出文件
+*.dvi
+
+# PS 输出文件
+*.ps
+
+# Auxiliary files generated by LaTeX
+*.aux
+*.bbl
+*.blg
+*.fdb_latexmk
+*.fls
+*.log
+*.out
+*.toc
+*.lof
+*.lot
+*.loa
+*.glo
+*.glg
+*.idx
+*.ind
+*.ilg
+*.bak
+*.synctex.gz
+*.nav
+*.snm
+*.vrb
+*.xdv
+
+# 编译缓存和临时文件
+*.toc
+*.lof
+*.lot
+*.loa
+*.glo
+*.glg
+*.idx
+*.ind
+*.ilg
+*.out
+*.aux
+
+# LaTeXmk 生成的文件
+*.fls
+*.log
+*.synctex.gz
+latexmk.log
+
+# 编辑器备份文件（可选，根据需要添加）
+*~
+
+# Vim swap files
+.*.swp
+.*.swo
+
+# Emacs backup files
+\#*
+*~
+\.#*
+
+# VS Code workspace settings
+.vscode/
+
+# 编译工具（如 make、latexmk）生成的目录
+.build/
+build/
+tmp/
+temp/
+
+# 其他可能的编译输出目录（根据项目结构调整）
+*.bcf
+*.run.xml
diff --git a/README.md b/README.md
index 67f8785..f108c6d 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
 # LaTeX
 
-📦 存放 LaTeX 相关代码
\ No newline at end of file
+📦 存放 LaTeX 相关代码
+
+> 模板来源：https://github.com/fenglielie/latexzero
\ No newline at end of file
diff --git a/beamer/beamer-quickstart.tex b/beamer/beamer-quickstart.tex
new file mode 100644
index 0000000..6edf80a
--- /dev/null
+++ b/beamer/beamer-quickstart.tex
@@ -0,0 +1,77 @@
+\documentclass[compress,aspectratio=169]{beamer}
+\input{./beamer-setup}
+
+% \usepackage[style=authoryear]{biblatex}
+% \addbibresource{reference.bib}
+
+\title{Title}
+\subtitle{Subtitle}
+\author{Author}
+\date{\today}
+\institute{University of XXXX}
+
+\AtBeginSection[]
+{
+    \begin{frame}{Outline}
+        \tableofcontents[currentsection,currentsubsection,
+            hideothersubsections,sectionstyle=show/shaded]
+    \end{frame}
+}
+
+\begin{document}
+
+\begin{frame}[plain]
+    \titlepage
+
+    \begin{center}
+        \small Joint work with XXX and XXX.
+    \end{center}
+\end{frame}
+
+\begin{frame}{Outline}
+    \tableofcontents[sectionstyle=show,subsectionstyle=show/shaded/hide,
+        subsubsectionstyle=show/shaded/hide]
+\end{frame}
+
+\section{Introduction}
+
+\begin{frame}{Frame 1}
+
+\end{frame}
+
+\section{Body section A}
+
+\subsection{Subsection A1}
+
+\begin{frame}{Frame 2}
+
+\end{frame}
+
+\begin{frame}{Frame 3}
+
+\end{frame}
+
+\subsection{Subsection A2}
+
+\begin{frame}{Frame 4}
+
+\end{frame}
+
+\section{Body section B}
+
+\begin{frame}{Frame 5}
+
+\end{frame}
+
+\section{Conclusion}
+
+\begin{frame}{Conclusion \& Future work}
+
+\end{frame}
+
+\begin{frame}[plain]
+    \vspace{0.3\textheight}
+    \Huge{\centerline{\color{simplebeamercolor}\textbf{Thank You!}}}
+\end{frame}
+
+\end{document}
diff --git a/beamer/beamer-setup-console.tex b/beamer/beamer-setup-console.tex
new file mode 100644
index 0000000..0173a50
--- /dev/null
+++ b/beamer/beamer-setup-console.tex
@@ -0,0 +1,79 @@
+%================================
+% beamer-setup-console.tex
+% fenglielie@qq.com 2025-11-12
+%================================
+
+\usetheme{default}
+\useoutertheme{default}
+\usefonttheme[onlymath]{serif}
+\definecolor{simplebeamercolor}{RGB}{255,216,80}
+\usecolortheme[named=simplebeamercolor]{structure}
+
+\setbeamertemplate{title page}[default][colsep=-4bp,rounded=true,shadow=true]
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[subsections numbered]
+\addtobeamertemplate{subsection in toc}{\hspace{2em}}{}
+\setbeamertemplate{itemize items}[circle]
+\setbeamertemplate{enumerate items}[default]
+\setbeamertemplate{caption}[numbered]
+\setbeamertemplate{footline}[frame number]{}
+\setbeamertemplate{navigation symbols}{}
+\setbeamertemplate{frametitle}{\hspace*{-1em}{\usebeamercolor[fg]{normal text}\texttt{\mdseries>\hbox{}>\hbox{}> }}\boldmath\insertframetitle}
+\setbeamercolor{background canvas}{bg=black!80}
+\setbeamercolor{normal text}{fg=white}
+
+% \setbeamercolor{title}{use=structure}
+\setbeamercolor{section in head/foot}{fg=white,bg=black!85}
+\setbeamercolor{block body}{fg=structure!10,bg=black!70}
+\setbeamercolor{block title}{fg=structure!50,bg=black!60}
+\setbeamercolor{block body alerted}{fg=alerted text.fg!10,bg=black!70}
+\setbeamercolor{block title alerted}{fg=alerted text.fg!60,bg=black!60}
+\setbeamercolor{block body example}{fg=green!10,bg=black!70}
+\setbeamercolor{block title example}{fg=green!50,bg=black!60}
+
+% fonts
+\usepackage[T1]{fontenc}
+\usepackage{mathrsfs}
+\usepackage{calligra}
+\usepackage{bm}
+
+% math
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+
+\usepackage{extarrows}
+\usepackage{booktabs}
+\usepackage{multirow}
+\usepackage{multicol}
+
+\usepackage[most]{tcolorbox}
+\tcbset{
+    highlight math style={enhanced, colframe=blue!40,colback=yellow!20,arc=4pt,boxrule=1pt}
+}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small\color{white!90},
+    breaklines=true,
+    keywordstyle=\color{cyan!70!white},
+    identifierstyle=\color{white},
+    stringstyle=\color{yellow!80!orange},
+    commentstyle=\color{green!60!black},
+    showstringspaces=false,
+    frame=single,
+    rulecolor=\color{white!30},
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
diff --git a/beamer/beamer-setup-plain.tex b/beamer/beamer-setup-plain.tex
new file mode 100644
index 0000000..753372a
--- /dev/null
+++ b/beamer/beamer-setup-plain.tex
@@ -0,0 +1,76 @@
+%================================
+% beamer-setup-plain.tex
+% fenglielie@qq.com 2025-07-27
+%================================
+
+\usetheme{default}
+\useoutertheme{default}
+\usefonttheme[onlymath]{serif}
+\definecolor{simplebeamercolor}{RGB}{57,89,199}
+\usecolortheme[named=simplebeamercolor]{structure}
+
+\setbeamertemplate{title page}[default][colsep=-4bp,rounded=true,shadow=true]
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[subsections numbered]
+\addtobeamertemplate{subsection in toc}{\hspace{2em}}{}
+\setbeamertemplate{itemize items}[circle]
+\setbeamertemplate{enumerate items}[default]
+\setbeamertemplate{caption}[numbered]
+\setbeamertemplate{footline}[frame number]{}
+\setbeamertemplate{navigation symbols}{}
+\setbeamertemplate{frametitle}{\vspace*{0.5em}\insertframetitle\par\vskip-6pt\hrulefill\vspace{-0.1em}}
+
+\setbeamercolor{title}{use=structure,fg=white,bg=structure.fg}
+\setbeamercolor{section in head/foot}{fg=white,bg=structure.fg}
+\setbeamercolor{block body}{bg=structure!10}
+\setbeamercolor{block title}{bg=structure!20}
+\setbeamercolor{block body alerted}{bg=alerted text.fg!10}
+\setbeamercolor{block title alerted}{bg=alerted text.fg!20}
+\setbeamercolor{block body example}{bg=green!10}
+\setbeamercolor{block title example}{bg=green!20}
+
+% fonts
+\usepackage[T1]{fontenc}
+\usepackage{mathrsfs}
+\usepackage{calligra}
+\usepackage{bm}
+
+% math
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+
+\usepackage{extarrows}
+\usepackage{booktabs}
+\usepackage{multirow}
+\usepackage{multicol}
+
+\usepackage[most]{tcolorbox}
+\tcbset{
+    highlight math style={enhanced, colframe=blue!40,colback=yellow!20,arc=4pt,boxrule=1pt}
+}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
diff --git a/beamer/beamer-setup.tex b/beamer/beamer-setup.tex
new file mode 100644
index 0000000..b08bea2
--- /dev/null
+++ b/beamer/beamer-setup.tex
@@ -0,0 +1,76 @@
+%================================
+% beamer-setup.tex
+% fenglielie@qq.com 2025-07-27
+%================================
+
+\usetheme{default}
+\useoutertheme[subsection=false]{miniframes}
+\usefonttheme[onlymath]{serif}
+\definecolor{simplebeamercolor}{RGB}{57,89,199}
+\usecolortheme[named=simplebeamercolor]{structure}
+
+\setbeamertemplate{title page}[default][colsep=-4bp,rounded=true,shadow=true]
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[subsections numbered]
+\addtobeamertemplate{subsection in toc}{\hspace{2em}}{}
+\setbeamertemplate{itemize items}[circle]
+\setbeamertemplate{enumerate items}[default]
+\setbeamertemplate{caption}[numbered]
+\setbeamertemplate{footline}[frame number]{}
+\setbeamertemplate{navigation symbols}{}
+\setbeamertemplate{frametitle}{\vspace*{0.5em}\insertframetitle\par\vskip-6pt\hrulefill\vspace{-0.1em}}
+
+\setbeamercolor{title}{use=structure,fg=white,bg=structure.fg}
+\setbeamercolor{section in head/foot}{fg=white,bg=structure.fg}
+\setbeamercolor{block body}{bg=structure!10}
+\setbeamercolor{block title}{bg=structure!20}
+\setbeamercolor{block body alerted}{bg=alerted text.fg!10}
+\setbeamercolor{block title alerted}{bg=alerted text.fg!20}
+\setbeamercolor{block body example}{bg=green!10}
+\setbeamercolor{block title example}{bg=green!20}
+
+% fonts
+\usepackage[T1]{fontenc}
+\usepackage{mathrsfs}
+\usepackage{calligra}
+\usepackage{bm}
+
+% math
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+
+\usepackage{extarrows}
+\usepackage{booktabs}
+\usepackage{multirow}
+\usepackage{multicol}
+
+\usepackage[most]{tcolorbox}
+\tcbset{
+    highlight math style={enhanced, colframe=blue!40,colback=yellow!20,arc=4pt,boxrule=1pt}
+}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
diff --git a/beamer/demo/demo-console.pdf b/beamer/demo/demo-console.pdf
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diff --git a/beamer/demo/figures/img1.png b/beamer/demo/figures/img1.png
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diff --git a/beamer/demo/figures/img2.png b/beamer/demo/figures/img2.png
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diff --git a/beamer/demo/main.pdf b/beamer/demo/main.pdf
new file mode 100644
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diff --git a/beamer/demo/main.tex b/beamer/demo/main.tex
new file mode 100644
index 0000000..85c0bfa
--- /dev/null
+++ b/beamer/demo/main.tex
@@ -0,0 +1,364 @@
+\documentclass[compress,aspectratio=169]{beamer}
+\input{../beamer-setup-plain}
+
+\usepackage[style=authoryear]{biblatex}
+\addbibresource{reference.bib}
+
+\title{Title}
+\subtitle{Subtitle}
+\author{Author}
+\date{July 27, 2025}
+\institute{University of XXXX}
+
+\AtBeginSection[]{
+    \begin{frame}{Outline}
+        \tableofcontents[currentsection,currentsubsection]
+    \end{frame}
+}
+\AtBeginSubsection[]{
+    \begin{frame}{Outline}
+        \tableofcontents[currentsection,currentsubsection]
+    \end{frame}
+}
+
+\begin{document}
+
+\begin{frame}[plain]
+    \titlepage
+
+    \begin{center}
+        \small Joint work with XXX and XXX.
+    \end{center}
+\end{frame}
+
+\begin{frame}{Outline}
+    \tableofcontents
+\end{frame}
+
+\section{Guide}
+
+\begin{frame}{Global Structure}
+    To create the ``global structure" of a presentation, with the time constraints in mind, proceed as follows:
+
+    \medskip
+    \begin{enumerate}
+        \item Make a mental inventory of the things you can reasonably talk about within the time available.
+
+        \item Categorize the inventory into sections and subsections. Both the sections and the subsections should follow a logical pattern.
+
+        \item Do not use more than four sections and not less than two per part.
+
+        \item Keep section and subsection titles self-explaining.
+    \end{enumerate}
+
+\end{frame}
+
+\begin{frame}{Time Control}
+    \begin{itemize}
+        \item A simple rule for the number of frames is that you should have at most one frame per minute.
+
+              \medskip
+        \item In most situations, you will have less time for your presentation than you would like.
+
+              \medskip
+        \item Do not try to squeeze more into a presentation than time allows for.
+    \end{itemize}
+\end{frame}
+
+
+\begin{frame}{Beginning and End}
+    People pay most attention at the beginning and at the end of talks.
+
+    \medskip
+    \begin{itemize}
+        \item Begin with an explanation of what your talk is all about. Then explain what you or someone else has found out concerning the subject matter.
+
+              \medskip
+        \item Always conclude your talk with a summary that repeats the main message of the talk in a short and simple way.
+    \end{itemize}
+
+\end{frame}
+
+\begin{frame}{Frame Title}
+    \begin{enumerate}
+        \item The title should really explain things, not just give a cryptic summary that cannot be understood unless one has understood the whole slide.
+
+              \medskip
+        \item In English, you should either always capitalize all words in a frame title except for words like ``a" or ``the" (as in a title), or you always use the normal lowercase letters.
+              \begin{itemize}
+                  \item Introduction to Algorithms.
+                  \item Introduction to algorithms.
+              \end{itemize}
+    \end{enumerate}
+\end{frame}
+
+\begin{frame}{Frame Content}
+    \begin{enumerate}
+        \item Use block environments like `theorem' and so on.
+
+              \medskip
+        \item Prefer enumerations and itemize environments over plain text.
+
+              \medskip
+        \item Do not use more than two levels of subitemizing.
+
+              \medskip
+        \item A frame with too little on it is better than a frame with too much on it.
+    \end{enumerate}
+
+    \bigskip
+    Alert: \alert{Avoid using animations in Beamer slides.}
+\end{frame}
+
+\begin{frame}{Graphic}
+    \begin{enumerate}
+        \item Visualization is helpful to the audience.
+
+              \medskip
+        \item Like text, you should explain everything that is shown on a graphic.
+
+              \medskip
+        \item Sometimes the complexity of a graphic is intentional and you are willing to spend much time explaining the graphic in great detail.
+    \end{enumerate}
+
+\end{frame}
+
+\section{Demo}\label{sec:demo}
+
+\subsection{Basic}
+
+\begin{frame}{Highlighted Math}
+    Some important formulas will be \alert{highlighted} because it's important.
+
+    \medskip
+    We consider the system of linear equations
+    \begin{equation}\label{eq:LE}
+        \tcbhighmath{Ax = b}
+    \end{equation}
+    where $A\in\mathbb{R}^{n \times n}$, $b\in\mathbb{R}^n$.
+\end{frame}
+
+
+\begin{frame}{Columns \& Description \& List}
+
+    \begin{columns}
+
+        \begin{column}{0.49\textwidth}
+            \begin{description}[leftmargin=1cm]
+                \item[Description 1] Explanation 1
+                \item[Description 2] Explanation 2
+                \item[Description 3] Explanation 3
+            \end{description}
+        \end{column}
+
+        \hfill
+
+        \begin{column}{0.49\textwidth}
+            \begin{itemize}
+                \item Item 1
+                \item Item 2
+                      \begin{enumerate}
+                          \item First item
+                          \item Second item
+                          \item Third item
+                      \end{enumerate}
+                \item Item 3
+                      \begin{enumerate}
+                          \item First item
+                          \item Second item
+                      \end{enumerate}
+            \end{itemize}
+        \end{column}
+    \end{columns}
+
+\end{frame}
+
+\begin{frame}{Reference \& URL}
+    \begin{itemize}
+        \item A citation example~\cite{vaswaniAttentionAllYou2023}.
+
+        \item A foot full citation example~\footfullcite{vaswaniAttentionAllYou2023}.
+
+        \item See Section~\ref{sec:demo} for details.
+
+        \item Here is a URL link to \href{https://www.openai.com}{OpenAI website}.
+    \end{itemize}
+\end{frame}
+
+\subsection{Block}
+
+\begin{frame}
+    \frametitle{Blocks 1}
+    \begin{block}{Block Title}
+        This is a regular block.
+    \end{block}
+
+    \begin{alertblock}{Alert Block Title}
+        This is an alert block.
+    \end{alertblock}
+
+    \begin{exampleblock}{Example Block Title}
+        This is an example block.
+    \end{exampleblock}
+\end{frame}
+
+\begin{frame}
+    \frametitle{Blocks 2}
+    \begin{definition}[XXX]
+        This is a definition block.
+    \end{definition}
+
+    \begin{lemma}[XXX]
+        This is a lemma block.
+    \end{lemma}
+
+    \begin{corollary}[XXX]
+        This is a corollary block.
+    \end{corollary}
+
+    \begin{example}[XXX]
+        This is an example block.
+    \end{example}
+
+\end{frame}
+
+\begin{frame}
+    \frametitle{Blocks 3}
+    \begin{theorem}[XXX]
+        This is a theorem block.
+        \[
+            a^2 + b^2 = c^2
+        \]
+    \end{theorem}
+
+    \begin{proof}
+        This is a proof block.
+    \end{proof}
+
+\end{frame}
+
+\subsection{Table \& Figure}
+
+\begin{frame}{Tables}
+    \begin{table}
+        \caption{Example Table}
+        \begin{tabular}{|c|c|c|}
+            \hline
+            Header 1 & Header 2 & Header 3 \\
+            \hline
+            Cell 1   & Cell 2   & Cell 3   \\
+            Cell 4   & Cell 5   & Cell 6   \\
+            \hline
+        \end{tabular}
+    \end{table}
+
+    \begin{table}[ht]
+        \centering
+        \caption{Error and order}\label{tab:1}
+        \begin{tabular}{c|ccccc}
+            \hline
+            m     & 80      & 160     & 320     & 640     \\
+            \hline
+            error & 1.95e-4 & 4.88e-5 & 1.22e-5 & 3.05e-6 \\
+            order & -       & 2.00    & 2.00    & 2.00    \\
+            \hline
+            error & 1.95e-4 & 4.88e-5 & 1.22e-5 & 3.05e-6 \\
+            order & -       & 2.00    & 2.00    & 2.00    \\
+            \hline
+        \end{tabular}
+    \end{table}
+\end{frame}
+
+\begin{frame}{Figure}
+    \begin{figure}
+        \includegraphics[width=0.3\linewidth]{img.png}
+        \caption{XXX}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Figures}
+    \begin{figure}[htbp]
+        \centering
+        \begin{subfigure}[b]{0.45\textwidth}
+            \centering
+            \includegraphics[width=0.7\textwidth]{img1.png}
+            \caption{XXX}\label{fig:subfig-a}
+        \end{subfigure}
+        \begin{subfigure}[b]{0.45\textwidth}
+            \centering
+            \includegraphics[width=0.7\textwidth]{img2.png}
+            \caption{XXX}\label{fig:subfig-b}
+        \end{subfigure}
+        \caption{XXX}\label{fig:example}
+    \end{figure}
+\end{frame}
+
+
+\begin{frame}{Figure + Columns}
+    \begin{columns}
+        \column{0.6\textwidth}
+        \begin{figure}
+            \includegraphics[width=0.5\linewidth]{img.png}
+        \end{figure}
+        \column{0.4\textwidth}
+        This is column one with 0.4 text width.
+    \end{columns}
+\end{frame}
+
+\subsection{Algorithm \& Code}
+
+\begin{frame}{Algorithm}
+    \begin{algorithm}[H]
+        \caption{Euclid's algorithm}
+        \KwData{Two nonnegative integers $a$ and $b$}
+        \KwResult{Their greatest common divisor $d = \gcd(a, b)$}
+        \While{$b \neq 0$}{
+            $r \leftarrow a \bmod b$\;
+            $a \leftarrow b$\;
+            $b \leftarrow r$\;
+        }
+        $d \leftarrow a$\;
+    \end{algorithm}
+
+\end{frame}
+
+\begin{frame}[fragile]{Code}
+
+    \begin{lstlisting}[language=c++]
+#include <iostream>
+
+int main() { // Hello World
+    std::cout << "Hello, world!" << std::endl;
+    return 0;
+}
+\end{lstlisting}
+    \begin{lstlisting}[language=python]
+def greet(name):
+    print(f"Hello, {name}!")
+
+greet("John")
+\end{lstlisting}
+
+\end{frame}
+
+
+\section{Conclusion}
+
+\begin{frame}{Conclusion \& Future work}
+    \begin{itemize}
+        \item This is the conclusion
+              \medskip
+        \item This is the future work
+    \end{itemize}
+\end{frame}
+
+\begin{frame}
+    \vspace{0.05\textheight}
+    \Huge{\centerline{\color{simplebeamercolor}\textbf{Thank You!}}}
+    \vspace{0.2\textheight}
+
+    % \nocite{*}
+    \printbibliography[keyword=important,heading=none]
+\end{frame}
+
+\end{document}
diff --git a/beamer/demo/reference.bib b/beamer/demo/reference.bib
new file mode 100644
index 0000000..92b12f3
--- /dev/null
+++ b/beamer/demo/reference.bib
@@ -0,0 +1,9 @@
+@online{vaswaniAttentionAllYou2023,
+  title = {Attention {{Is All You Need}}},
+  author = {Vaswani, Ashish and Shazeer, Noam and Parmar, Niki and Uszkoreit, Jakob and Jones, Llion and Gomez, Aidan N. and Kaiser, Lukasz and Polosukhin, Illia},
+  number = {arXiv:1706.03762},
+  doi = {10.48550/arXiv.1706.03762},
+  url = {http://arxiv.org/abs/1706.03762},
+  pubstate = {prepublished},
+  keywords = {important}
+}
diff --git a/docs/beamer-setup-doc-cn.md b/docs/beamer-setup-doc-cn.md
new file mode 100644
index 0000000..dccad02
--- /dev/null
+++ b/docs/beamer-setup-doc-cn.md
@@ -0,0 +1,131 @@
+# beamer-setup 配置说明
+
+## Beamer 样式配置
+
+设置主题，包括导航栏样式，数学字体，主题颜色
+```latex
+\usetheme{default}
+\useoutertheme[subsection=false]{miniframes}
+\usefonttheme[onlymath]{serif}
+\definecolor{simplebeamercolor}{RGB}{57,89,199}
+\usecolortheme[named=simplebeamercolor]{structure}
+```
+
+设置标题页样式：圆角，加阴影
+```latex
+\setbeamertemplate{title page}[default][colsep=-4bp,rounded=true,shadow=true]
+```
+
+设置目录样式：section和subsection均开启编号，subsection加上缩进
+```latex
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{subsection in toc}[subsections numbered]
+\addtobeamertemplate{subsection in toc}{\hspace{2em}}{}
+```
+
+设置无序列表和有序列表的样式
+```latex
+\setbeamertemplate{itemize items}[circle]
+\setbeamertemplate{enumerate items}[default]
+```
+
+设置caption样式：开启编号
+```latex
+\setbeamertemplate{caption}[numbered]
+```
+
+设置底部样式：仅显示页码，移除导航按钮
+```latex
+\setbeamertemplate{footline}[frame number]{}
+\setbeamertemplate{navigation symbols}{}
+```
+
+设置帧标题样式：在帧标题下面添加一条横线
+```latex
+\setbeamertemplate{frametitle}{\vspace*{0.5em}\insertframetitle\par\vskip-6pt\hrulefill\vspace{-0.1em}}
+```
+
+设置标题样式
+```latex
+\setbeamercolor{title}{use=structure,fg=white,bg=structure.fg}
+```
+
+设置顶部导航栏中的section样式
+```latex
+\setbeamercolor{section in head/foot}{fg=white,bg=structure.fg}
+```
+
+设置各个元素的颜色样式
+```latex
+\setbeamercolor{block body}{bg=structure!10}
+\setbeamercolor{block title}{bg=structure!20}
+\setbeamercolor{block body alerted}{bg=alerted text.fg!10}
+\setbeamercolor{block title alerted}{bg=alerted text.fg!20}
+\setbeamercolor{block body example}{bg=green!10}
+\setbeamercolor{block title example}{bg=green!20}
+```
+
+## 其它配置
+
+导入常用的基础宏包
+```latex
+% fonts
+\usepackage[T1]{fontenc}
+\usepackage{mathrsfs}
+\usepackage{calligra}
+\usepackage{bm}
+
+% math
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+
+\usepackage{extarrows}
+\usepackage{booktabs}
+\usepackage{multirow}
+\usepackage{multicol}
+```
+
+导入盒子宏包，并为`\tcbhighmath`命令设置预设样式
+```latex
+\usepackage[most]{tcolorbox}
+\tcbset{
+    highlight math style={enhanced, colframe=blue!40,colback=yellow!20,arc=4pt,boxrule=1pt}
+}
+```
+
+导入超链接支持的宏包
+```latex
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+```
+
+插入图片以及子图的相关宏包，对图片文件夹路径进行配置
+```latex
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+```
+
+导入算法环境的宏包
+```latex
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+```
+
+导入代码环境的宏包并配置样式
+```latex
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
diff --git a/docs/note-setup-doc-cn.md b/docs/note-setup-doc-cn.md
new file mode 100644
index 0000000..0997755
--- /dev/null
+++ b/docs/note-setup-doc-cn.md
@@ -0,0 +1,275 @@
+# note-setup 配置说明
+
+## 基本配置
+
+导入常用的基础宏包
+```latex
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+```
+
+导入颜色支持的宏包
+```latex
+\usepackage[dvipsnames]{xcolor}
+```
+
+插入图片以及子图的相关宏包，对图片文件夹路径进行配置
+```latex
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}
+    {./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+```
+
+导入算法环境的宏包
+```latex
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+```
+
+导入代码环境的宏包并配置样式
+```latex
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+```
+
+导入超链接支持的宏包
+```latex
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+```
+
+
+## 定理环境
+
+修改 proof 环境的引导词为 Proof，样式为加粗无斜体
+```latex
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+```
+
+导入 thmtools 宏包，使用 `\declaretheorem` 命令来定义各种定理环境（比`\newtheorem`命令更加方便）
+```latex
+\usepackage{thmtools}
+```
+
+使用的 `\declaretheorem` 命令参数包括：
+
+- `style`: 定理环境样式，amsthm 内置的样式包括
+  - plain（默认）：引导词是正体，内容是斜体
+  - definition：引导词和内容都是正体
+  - remark：引导词是斜体，内容是正体
+- `name`：显示在正文中的引导词（不等于环境的名称）
+- `numbered`：是否开启编号
+- `numberwithin`、`sibling`：定义编号规则，例如
+  - `numberwithin=section`：基于 section 编号
+  - `sibling=theorem`：共享 `theorem` 环境的编号
+
+
+具体包括：
+
+- 采用 plain 样式，定义 `theorem`/`theorem*`、`proposition`/`proposition*`、`corollary`/`corollary*`、`lemma`/`lemma*`、`claim`/`claim*` 环境
+```latex
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+```
+- 采用 definition 样式，定义 `definition`/`definition*`、`example`/`example*`、`problem`/`problem*` 环境
+```latex
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+```
+- 采用 remark 样式，定义 `remark`/`remark*` 环境
+```latex
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+```
+- 使用 `\declaretheoremstyle` 命令定义新的 notestyle 样式，类似 remark 环境，但是引导词变成 Note，并且有颜色
+```latex
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+```
+- 采用新定义的 notestyle 样式，定义 `note`/`note*` 环境
+```latex
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+```
+- 使用 `\declaretheoremstyle` 命令定义新的 solutionstyle 样式，类似 proof 环境，但是引导词变成 Solution
+```latex
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+```
+- 采用新定义的 solutionstyle 样式，定义 `solution`/`solition*` 环境
+```latex
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+```
+
+
+## 定理环境的美化
+
+导入 tcolorbox 宏包以使用盒子美化现有的定理环境
+```latex
+\usepackage[most]{tcolorbox}
+```
+
+tcolorbox 宏包的功能非常复杂，这里只需要使用 `\tcolorboxenvironment` 命令。
+
+首先封装一个 `\newtcbenvironment` 命令
+```latex
+\newcommand{\newtcbenvironment}[2]{
+    \tcolorboxenvironment{#1}{#2, enhanced, breakable, sharp corners, boxrule=1pt}
+    \tcolorboxenvironment{#1*}{#2, enhanced, breakable, rounded corners, boxrule=1pt}
+}
+```
+
+它可以同时为 `#1` 以及 `#1*` 这两个环境加上盒子，公共参数：
+
+- `#2`：在定义时传入的参数，这里主要是边框颜色和背景色
+- `enhanced`：样式增强
+- `breakable`：允许跨页
+- `boxrule=1pt`：边框宽度为 1pt
+
+还有不同的参数：
+
+- `#1` 盒子使用直角边框（`sharp corners`）
+- `#1*` 盒子使用圆角边框（`rounded corners`）
+
+> 对 `\newtcbenvironment` 内部的公共参数部分进行调整，就可以实现所有盒子只保留左侧边框或者四周无边框等不同的效果。
+
+下面就是为前面的各种定理环境加上盒子，参数是盒子的边框颜色 `colframe` 和背景色 `colback`
+```latex
+%% define styles
+
+\newtcbenvironment{theorem}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{proposition}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{corollary}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{lemma}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{claim}{colframe=NavyBlue, colback=SkyBlue!8}
+
+\newtcbenvironment{definition}{colframe=ForestGreen, colback=ForestGreen!5}
+\newtcbenvironment{example}{colframe=RawSienna, colback=RawSienna!5}
+\newtcbenvironment{problem}{colframe=WildStrawberry!30, colback=WildStrawberry!5}
+```
+
+具体颜色如下表
+
+|            环境名             |   盒子边框颜色    |    盒子背景色    |
+| :---------------------------: | :---------------: | :--------------: |
+|   `theorem`, `proposition`    |    RoyalPurple    |  RoyalPurple!8   |
+| `corollary`, `lemma`, `claim` |     NavyBlue      |    SkyBlue!8     |
+|         `definition`          |    ForestGreen    |  ForestGreen!5   |
+|           `example`           |     RawSienna     |   RawSienna!5    |
+|           `problem`           | WildStrawberry!30 | WildStrawberry!5 |
+
+说明：
+
+- 这里采用 `xcolor` 宏包所提供的标准颜色，`xxx!n`代表将颜色 `xxx` 以 `n%` 比例和白色混合得到的浅颜色。
+- 为了避免颜色过多，对语义类似的环境合并采用相同的盒子颜色。
+
+此外，还添加了一个没有标题的简单盒子 `cbox`
+```latex
+%% cbox
+\newtcolorbox{cbox}[1][]{%
+    enhanced,
+    breakable,
+    sharp corners,
+    leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt,
+    colframe=SkyBlue,
+    colback=SkyBlue!8,
+    #1
+}
+```
+
+
+## 自定义封面页
+
+自定义封面页（参考 [ElegantBook](https://github.com/ElegantLaTeX/ElegantBook) 以及它的若干衍生模板）
+```latex
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
+```
+
+这里没有选择覆盖`\maketitle`，而是改成新命令`\makecover`，接收的一个必要参数为封面图的路径。
+
+封面图建议尺寸为1280*1024，尤其对于jpg格式的图片，尺寸不同会导致编译报错。
diff --git a/lab-report/example.py b/lab-report/example.py
new file mode 100644
index 0000000..00eb1fe
--- /dev/null
+++ b/lab-report/example.py
@@ -0,0 +1,13 @@
+# example.py
+
+def factorial_generator(n):
+    result = 1
+    for i in range(1, n + 1):
+        result *= i
+        yield result
+
+
+gen = factorial_generator(5)
+
+for value in gen:
+    print(value)
diff --git a/lab-report/figures/demo1.png b/lab-report/figures/demo1.png
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diff --git a/lab-report/figures/demo2-1.png b/lab-report/figures/demo2-1.png
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diff --git a/lab-report/figures/demo2-2.png b/lab-report/figures/demo2-2.png
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index 0000000..bbac8c4
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diff --git a/lab-report/lab-report.tex b/lab-report/lab-report.tex
new file mode 100644
index 0000000..85907bf
--- /dev/null
+++ b/lab-report/lab-report.tex
@@ -0,0 +1,114 @@
+%!TEX program = xelatex
+\documentclass{article}
+\usepackage[UTF8,scheme=plain]{ctex}
+\usepackage[a4paper,left=1.25in,right=1.25in,top=1in,bottom=1in]{geometry}
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{graphicx}
+\usepackage{float}
+\usepackage{subcaption}
+\usepackage{booktabs,multirow,multicol}
+\usepackage{indentfirst}
+\usepackage{hyperref}
+\usepackage{setspace}
+\usepackage{listings}
+\usepackage[ruled,noline]{algorithm2e}
+\usepackage{bm}
+\usepackage{xcolor}
+
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\title{Lab Report Template}
+\author{Author}
+\date{\today}
+
+\begin{document}
+
+\maketitle
+
+\section{Introduction}
+
+xxxx.
+
+\section{Method}
+
+xxxx.
+
+\section{Results}
+
+xxxx.
+
+\begin{table}[ht]
+    \centering
+    \caption{Error and Order Table}\label{tab:demo0}
+    \begin{tabular}{c|ccccc}
+        \hline
+                           & 10       & 20        & 40        & 80         & 160        \\
+        \hline
+        $L^{\infty}$~error & 0.283284 & 0.0758226 & 0.0192964 & 0.00484029 & 0.00121093 \\
+        order              & -        & 1.90      & 1.97      & 2.00       & 2.00       \\
+        \hline
+    \end{tabular}
+\end{table}
+
+\begin{figure}[htbp]
+    \centering
+    \includegraphics[width=.8\textwidth]{demo1.png}
+    \caption{Figure}\label{fig:demo1}
+\end{figure}
+
+\begin{figure}[htbp]
+    \centering
+    \begin{subfigure}[b]{0.47\textwidth}
+        \centering
+        \includegraphics[width=\textwidth]{demo2-1.png}
+        \caption{Subplot 1}
+        \label{fig:demo2-a}
+    \end{subfigure}
+    \begin{subfigure}[b]{0.47\textwidth}
+        \centering
+        \includegraphics[width=\textwidth]{demo2-2.png}
+        \caption{Subplot 2}
+        \label{fig:demo2-b}
+    \end{subfigure}
+    \caption{Subplots}
+    \label{fig:demo2}
+\end{figure}
+
+\section{Conclusion}
+
+xxxx.
+
+\section{Code Demo}
+
+\begin{lstlisting}[style=simpleStyle, caption=Demo (C++), language=c++, label=lst:cpp]
+#include <iostream>
+
+int main(){
+    std::cout << "Hello World!" << std::endl;
+    return 0;
+}
+\end{lstlisting}
+
+\lstinputlisting[style=simpleStyle, caption=Demo (Python), language=python, label=lst:python]{example.py}
+
+
+\end{document}
diff --git a/note/cover/cover.png b/note/cover/cover.png
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index 0000000..e39bdc2
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diff --git a/note/demo/demo.pdf b/note/demo/demo.pdf
new file mode 100644
index 0000000..3a4f617
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diff --git a/note/demo/main.tex b/note/demo/main.tex
new file mode 100644
index 0000000..0045bc1
--- /dev/null
+++ b/note/demo/main.tex
@@ -0,0 +1,350 @@
+\documentclass{article}
+\input{../note-setup}
+
+\title{\LaTeX{} Note Template}
+\author{Author}
+\date{\today}
+\extrainfo{Github: \href{https://github.com/fenglielie/latexzero}{https://github.com/fenglielie/latexzero}}
+
+\begin{document}
+
+% \maketitle
+\makecover{../cover/cover.png}
+
+\section{Theorem, Proposition, Proof}
+
+\begin{theorem}
+    If $1<p<\infty$ and $m > n/p$, or $p=1$ and $m \ge n$, there exist a constant $C = C(m,n,\gamma,p)$, such that
+    \begin{equation*}
+        \Vert R^m u \Vert_{L^\infty(\Omega)} \le C d^{m-n/p} |u|_{W^m_p(\Omega)}
+    \end{equation*}
+    for all $u \in W^m_p(\Omega)$.
+\end{theorem}
+\begin{proof}
+    First, we assume that $u \in C^m(\Omega) \cap W^m_p(\Omega)$. We can use the pointwise representation of $R^mu(x)$.
+    \begin{align*}
+        |R^mu(x)| ={} & m \left| \sum_{|\alpha| = m} \int_{C_x} k_{\alpha}(x,z) D^\alpha u(z)\,dz \right| \notag \\
+        \le{}         & C \sum_{|\alpha|=m} \int_{\Omega} |x-z|^{-n+m} |D^\alpha u(z)|\,dz \notag                \\
+        \le{}         & C' d^{m-n/p} |u|_{W^m_p(\Omega)}.
+    \end{align*}
+    The proof can be completed via a density argument.
+\end{proof}
+
+\begin{theorem}[xxx]
+    If $1<p<\infty$ and $m > n/p$, or $p=1$ and $m \ge n$, there exist a constant $C = C(m,n,\gamma,p)$, such that
+    \begin{equation*}
+        \Vert R^m u \Vert_{L^\infty(\Omega)} \le C d^{m-n/p} |u|_{W^m_p(\Omega)}
+    \end{equation*}
+    for all $u \in W^m_p(\Omega)$.
+\end{theorem}
+\begin{proof}[\upshape\bfseries Proof of xxx]
+    First, we assume that $u \in C^m(\Omega) \cap W^m_p(\Omega)$. We can use the pointwise representation of $R^mu(x)$.
+    \begin{align*}
+        |R^mu(x)| ={} & m \left| \sum_{|\alpha| = m} \int_{C_x} k_{\alpha}(x,z) D^\alpha u(z)\,dz \right| \notag \\
+        \le{}         & C \sum_{|\alpha|=m} \int_{\Omega} |x-z|^{-n+m} |D^\alpha u(z)|\,dz \notag                \\
+        \le{}         & C' d^{m-n/p} |u|_{W^m_p(\Omega)}.
+    \end{align*}
+    The proof can be completed via a density argument.
+\end{proof}
+
+\begin{theorem*}
+    If $1<p<\infty$ and $m > n/p$, or $p=1$ and $m \ge n$, there exist a constant $C = C(m,n,\gamma,p)$, such that
+    \begin{equation*}
+        \Vert R^m u \Vert_{L^\infty(\Omega)} \le C d^{m-n/p} |u|_{W^m_p(\Omega)}
+    \end{equation*}
+    for all $u \in W^m_p(\Omega)$.
+\end{theorem*}
+\begin{proof}
+    First, we assume that $u \in C^m(\Omega) \cap W^m_p(\Omega)$. We can use the pointwise representation of $R^mu(x)$.
+    \begin{align*}
+        |R^mu(x)| ={} & m \left| \sum_{|\alpha| = m} \int_{C_x} k_{\alpha}(x,z) D^\alpha u(z)\,dz \right| \notag \\
+        \le{}         & C \sum_{|\alpha|=m} \int_{\Omega} |x-z|^{-n+m} |D^\alpha u(z)|\,dz \notag                \\
+        \le{}         & C' d^{m-n/p} |u|_{W^m_p(\Omega)}.
+    \end{align*}
+    The proof can be completed via a density argument.
+\end{proof}
+
+\begin{proposition}
+    \begin{equation*}
+        Q^m u(x) = \sum_{|\lambda| < m} \left( \int_B \psi_\lambda(y) u(y)\,dy \right) x^\lambda
+    \end{equation*}
+    where $\psi_\lambda \in C_0^\infty(\mathbb{R}^n)$ and $\mathrm{supp}(\phi_\lambda) \in \overline{B}$.
+\end{proposition}
+\begin{proof}
+    This follows from xxx if we define
+    \begin{equation*}
+        \psi_\lambda(y) = \sum_{\alpha \ge \lambda,|\alpha|<m}
+        \frac{(-1)^{|\alpha|}}{\alpha !} a_{[\lambda,\alpha-\lambda]} D^\alpha(y^{\alpha-\lambda} \phi(y)).
+    \end{equation*}
+\end{proof}
+
+\begin{proposition}[xxx]
+    \begin{equation*}
+        Q^m u(x) = \sum_{|\lambda| < m} \left( \int_B \psi_\lambda(y) u(y)\,dy \right) x^\lambda
+    \end{equation*}
+    where $\psi_\lambda \in C_0^\infty(\mathbb{R}^n)$ and $\mathrm{supp}(\phi_\lambda) \in \overline{B}$.
+\end{proposition}
+\begin{proof}[\upshape\bfseries Proof of xxx]
+    This follows from xxx if we define
+    \begin{equation*}
+        \psi_\lambda(y) = \sum_{\alpha \ge \lambda,|\alpha|<m}
+        \frac{(-1)^{|\alpha|}}{\alpha !} a_{[\lambda,\alpha-\lambda]} D^\alpha(y^{\alpha-\lambda} \phi(y)).
+    \end{equation*}
+\end{proof}
+
+\begin{proposition*}
+    \begin{equation*}
+        Q^m u(x) = \sum_{|\lambda| < m} \left( \int_B \psi_\lambda(y) u(y)\,dy \right) x^\lambda
+    \end{equation*}
+    where $\psi_\lambda \in C_0^\infty(\mathbb{R}^n)$ and $\mathrm{supp}(\phi_\lambda) \in \overline{B}$.
+\end{proposition*}
+\begin{proof}
+    This follows from xxx if we define
+    \begin{equation*}
+        \psi_\lambda(y) = \sum_{\alpha \ge \lambda,|\alpha|<m}
+        \frac{(-1)^{|\alpha|}}{\alpha !} a_{[\lambda,\alpha-\lambda]} D^\alpha(y^{\alpha-\lambda} \phi(y)).
+    \end{equation*}
+\end{proof}
+
+\section{Corollary, Lemma, Claim}
+
+\begin{corollary}
+    Under the assumption of xxx, the following inequality holds
+    \begin{equation*}
+        \inf_{v \in P^{m-1}} \Vert u - v \Vert_{W^k_p(\Omega)} \le C_{m,n,\gamma} d^{m-k} |u|_{W^k_p(\Omega)}, \,\, k = 0,1,\dots,m,
+    \end{equation*}
+\end{corollary}
+
+\begin{corollary}[xxx]
+    Under the assumption of xxx, the following inequality holds
+    \begin{equation*}
+        \inf_{v \in P^{m-1}} \Vert u - v \Vert_{W^k_p(\Omega)} \le C_{m,n,\gamma} d^{m-k} |u|_{W^k_p(\Omega)}, \,\, k = 0,1,\dots,m,
+    \end{equation*}
+\end{corollary}
+
+\begin{corollary*}
+    Under the assumption of xxx, the following inequality holds
+    \begin{equation*}
+        \inf_{v \in P^{m-1}} \Vert u - v \Vert_{W^k_p(\Omega)} \le C_{m,n,\gamma} d^{m-k} |u|_{W^k_p(\Omega)}, \,\, k = 0,1,\dots,m,
+    \end{equation*}
+\end{corollary*}
+
+\begin{lemma}
+    Let $f \in L^p(\Omega)$ for $p \ge 1$ and $m \ge 1$ and let
+    \[
+        g(x) = \int_\Omega |x-z|^{-n+m} |f(z)|\,dz
+    \]
+    Then
+    \begin{equation*}
+        \Vert g \Vert_{L^p(\Omega)} \le C_{m,n} d^m \Vert f\Vert_{L^p(\Omega)}.
+    \end{equation*}
+\end{lemma}
+
+\begin{lemma}[xxx]
+    Let $f \in L^p(\Omega)$ for $p \ge 1$ and $m \ge 1$ and let
+    \[
+        g(x) = \int_\Omega |x-z|^{-n+m} |f(z)|\,dz
+    \]
+    Then
+    \begin{equation*}
+        \Vert g \Vert_{L^p(\Omega)} \le C_{m,n} d^m \Vert f\Vert_{L^p(\Omega)}.
+    \end{equation*}
+\end{lemma}
+
+\begin{lemma*}
+    Let $f \in L^p(\Omega)$ for $p \ge 1$ and $m \ge 1$ and let
+    \[
+        g(x) = \int_\Omega |x-z|^{-n+m} |f(z)|\,dz
+    \]
+    Then
+    \begin{equation*}
+        \Vert g \Vert_{L^p(\Omega)} \le C_{m,n} d^m \Vert f\Vert_{L^p(\Omega)}.
+    \end{equation*}
+\end{lemma*}
+
+\begin{claim}
+    $Q^m u$ is a polynomial of degree less than $m$ in $x$.
+\end{claim}
+
+\begin{claim}[xxx]
+    $Q^m u$ is a polynomial of degree less than $m$ in $x$.
+\end{claim}
+
+\begin{claim*}
+    $Q^m u$ is a polynomial of degree less than $m$ in $x$.
+\end{claim*}
+
+\section{Definition}
+
+\begin{definition}
+    $\Omega$ is star-shaped with respect to the ball $B$ if , for all $x \in \Omega$, the closed convex hull of $\{x\} \cup B$ is a subset of $\Omega$.
+\end{definition}
+
+\begin{definition}[xxx]
+    $\Omega$ is star-shaped with respect to the ball $B$ if , for all $x \in \Omega$, the closed convex hull of $\{x\} \cup B$ is a subset of $\Omega$.
+\end{definition}
+
+\begin{definition*}
+    $\Omega$ is star-shaped with respect to the ball $B$ if , for all $x \in \Omega$, the closed convex hull of $\{x\} \cup B$ is a subset of $\Omega$.
+\end{definition*}
+
+\section{Example}
+
+\begin{example}
+    The integral form of the Taylor remainder for $f \in C^m([0,1])$ is given by
+    \begin{equation*}
+        f(s) = \sum_{k=0}^{m-1}\frac{1}{k!} f^{(k)}(0) + \int_0^s \frac{1}{(m-1)!} f^{(m)}(t)(s-t)^{m-1}\,dt.
+    \end{equation*}
+\end{example}
+
+\begin{example}[xxx]
+    The integral form of the Taylor remainder for $f \in C^m([0,1])$ is given by
+    \begin{equation*}
+        f(s) = \sum_{k=0}^{m-1}\frac{1}{k!} f^{(k)}(0) + \int_0^s \frac{1}{(m-1)!} f^{(m)}(t)(s-t)^{m-1}\,dt.
+    \end{equation*}
+\end{example}
+
+\begin{example*}
+    The integral form of the Taylor remainder for $f \in C^m([0,1])$ is given by
+    \begin{equation*}
+        f(s) = \sum_{k=0}^{m-1}\frac{1}{k!} f^{(k)}(0) + \int_0^s \frac{1}{(m-1)!} f^{(m)}(t)(s-t)^{m-1}\,dt.
+    \end{equation*}
+\end{example*}
+
+\section{Problem, Solution}
+
+\begin{problem}
+Calculate the integral of the function $g(x) = 3x^2$ with respect to $x$.
+\end{problem}
+
+\begin{solution}
+    To calculate the integral of $g(x) = 3x^2$, we use the power rule for integration:
+    \[
+        \int 3x^2 \, dx = x^3 + C
+    \]
+    where $C$ is the constant of integration.
+\end{solution}
+
+\begin{problem}[xxx]
+Calculate the integral of the function $g(x) = 3x^2$ with respect to $x$.
+\end{problem}
+\begin{solution}[xxx]
+    To calculate the integral of $g(x) = 3x^2$, we use the power rule for integration:
+    \[
+        \int 3x^2 \, dx = x^3 + C
+    \]
+    where $C$ is the constant of integration.
+\end{solution}
+
+\begin{problem*}
+    Calculate the integral of the function $g(x) = 3x^2$ with respect to $x$.
+\end{problem*}
+\begin{solution*}
+    To calculate the integral of $g(x) = 3x^2$, we use the power rule for integration:
+    \[
+        \int 3x^2 \, dx = x^3 + C
+    \]
+    where $C$ is the constant of integration.
+\end{solution*}
+
+\section{Remark}
+
+\begin{remark}
+    Such a polynomial is not unique, due to the choice od cut-off function $\phi$.
+\end{remark}
+
+\begin{remark}[xxx]
+    Such a polynomial is not unique, due to the choice od cut-off function $\phi$.
+\end{remark}
+
+\begin{remark*}
+    Such a polynomial is not unique, due to the choice od cut-off function $\phi$.
+\end{remark*}
+
+\section{Note}
+
+\begin{note}
+    The degree of $Q^m u$ is at most $m-1$.
+\end{note}
+
+\begin{note}[xxx]
+    The degree of $Q^m u$ is at most $m-1$.
+\end{note}
+
+\begin{note*}
+    The degree of $Q^m u$ is at most $m-1$.
+\end{note*}
+
+
+\section{lstlisting}
+
+\begin{lstlisting}[language=Python,caption={hello world}]
+def hello():
+    print("Hello, world!")
+
+hello()
+\end{lstlisting}
+
+\begin{lstlisting}[language=Python,caption={hanoi.py}]
+step = 1
+
+
+def hanoi(n, a, b, c, depth=0):
+    def move(n, a, c):
+        global step
+        print("    " * depth, end="")
+        print(f"{step=}: move [{n}] from {a} to {c}")
+        step += 1
+
+    if n == 1:
+        move(n, a, c)
+    else:
+        hanoi(n - 1, a, c, b, depth=depth + 1)
+        move(n, a, c)
+        hanoi(n - 1, b, a, c, depth=depth + 1)
+
+
+if __name__ == "__main__":
+    n = int(input("Hanoi Problem, N = "))
+    hanoi(n, "A", "B", "C")
+\end{lstlisting}
+
+\section{algorithm}
+
+
+\begin{algorithm}[H]
+    \KwIn{This is some input}
+    \KwOut{This is some output}
+    \SetAlgoLined
+    \SetNoFillComment
+    \tcc{This is a comment}
+    \vspace{3mm}
+    some code here\;
+    $x \leftarrow 0$\;
+    $y \leftarrow 0$\;
+    \uIf{$ x > 5$} {
+        x is greater than 5 \tcp*{This is also a comment}
+    }
+    \Else {
+        x is less than or equal to 5\;
+    }
+    \ForEach{y in 0..5} {
+        $y \leftarrow y + 1$\;
+    }
+    \For{$y$ in $0..5$} {
+        $y \leftarrow y - 1$\;
+    }
+    \While{$x > 5$} {
+        $x \leftarrow x - 1$\;
+    }
+    \Return Return something here\;
+    \caption{what}
+\end{algorithm}
+
+\section{cbox}
+
+\begin{cbox}
+    Whenever you feel like criticizing any one, just remember that all the people in this world haven't had the advantages that you've had. (The Great Gatsby)
+\end{cbox}
+
+\end{document}
diff --git a/note/demo/onepage-demo.tex b/note/demo/onepage-demo.tex
new file mode 100644
index 0000000..02e6d87
--- /dev/null
+++ b/note/demo/onepage-demo.tex
@@ -0,0 +1,88 @@
+\documentclass{article}
+\input{../note-setup-leftsidebox}
+
+\title{\LaTeX{} Note Template}
+\author{}
+\date{}
+
+\begin{document}
+
+\section{Demo}
+
+\begin{theorem}[xxx]
+    If $1<p<\infty$ and $m > n/p$, or $p=1$ and $m \ge n$, there exist a constant $C = C(m,n,\gamma,p)$, such that
+    \begin{equation*}
+        \Vert R^m u \Vert_{L^\infty(\Omega)} \le C d^{m-n/p} |u|_{W^m_p(\Omega)}
+    \end{equation*}
+    for all $u \in W^m_p(\Omega)$.
+\end{theorem}
+\begin{proof}[\upshape\bfseries Proof of xxx]
+    First, we assume that $u \in C^m(\Omega) \cap W^m_p(\Omega)$. We can use the pointwise representation of $R^mu(x)$.
+    \begin{align*}
+        |R^mu(x)| ={}  m \left| \sum_{|\alpha| = m} \int_{C_x} k_{\alpha}(x,z) D^\alpha u(z)\,dz \right|
+        \le{}  C \sum_{|\alpha|=m} \int_{\Omega} |x-z|^{-n+m} |D^\alpha u(z)|\,dz
+        \le{}       C' d^{m-\frac{n}{p}} |u|_{W^m_p(\Omega)}.
+    \end{align*}
+    The proof can be completed via a density argument.
+\end{proof}
+
+\begin{proposition}[xxx]
+    \begin{equation*}
+        Q^m u(x) = \sum_{|\lambda| < m} \left( \int_B \psi_\lambda(y) u(y)\,dy \right) x^\lambda
+    \end{equation*}
+    where $\psi_\lambda \in C_0^\infty(\mathbb{R}^n)$ and $\mathrm{supp}(\phi_\lambda) \in \overline{B}$.
+\end{proposition}
+
+
+\begin{corollary}[xxx]
+    Under the assumption of xxx, the following inequality holds
+    \begin{equation*}
+        \inf_{v \in P^{m-1}} \Vert u - v \Vert_{W^k_p(\Omega)} \le C_{m,n,\gamma} d^{m-k} |u|_{W^k_p(\Omega)}, \,\, k = 0,1,\dots,m,
+    \end{equation*}
+\end{corollary}
+
+\begin{lemma}[xxx]
+    Let $f \in L^p(\Omega)$ for $p \ge 1$ and $m \ge 1$ and let $g(x) = \int_\Omega |x-z|^{-n+m} |f(z)|\,dz$.
+    Then $\Vert g \Vert_{L^p(\Omega)} \le C_{m,n} d^m \Vert f\Vert_{L^p(\Omega)}$.
+\end{lemma}
+
+\begin{claim}[xxx]
+    $Q^m u$ is a polynomial of degree less than $m$ in $x$.
+\end{claim}
+
+
+\begin{definition}[xxx]
+    $\Omega$ is star-shaped with respect to the ball $B$ if , for all $x \in \Omega$, the closed convex hull of $\{x\} \cup B$ is a subset of $\Omega$.
+\end{definition}
+
+
+\begin{example}[xxx]
+    The integral form of the Taylor remainder for $f \in C^m([0,1])$ is given by
+    \begin{equation*}
+        f(s) = \sum_{k=0}^{m-1}\frac{1}{k!} f^{(k)}(0) + \int_0^s \frac{1}{(m-1)!} f^{(m)}(t)(s-t)^{m-1}\,dt.
+    \end{equation*}
+\end{example}
+
+
+\begin{problem}[xxx]
+Calculate the integral of the function $g(x) = 3x^2$ with respect to $x$.
+\end{problem}
+\begin{solution}[xxx]
+    To calculate the integral of $g(x) = 3x^2$, we use the power rule for integration:
+    \[
+        \int 3x^2 \, dx = x^3 + C
+    \]
+    where $C$ is the constant of integration.
+\end{solution}
+
+
+\begin{remark}[xxx]
+    Such a polynomial is not unique, due to the choice od cut-off function $\phi$.
+\end{remark}
+
+
+\begin{note}[xxx]
+    The degree of $Q^m u$ is at most $m-1$.
+\end{note}
+
+\end{document}
diff --git a/note/note-quickstart.tex b/note/note-quickstart.tex
new file mode 100644
index 0000000..bb9aabe
--- /dev/null
+++ b/note/note-quickstart.tex
@@ -0,0 +1,15 @@
+\documentclass{article}
+\input{./note-setup}
+
+% \usepackage{biblatex}
+% \addbibresource{reference.bib}
+
+\title{Title}
+\author{Author}
+\date{\today}
+
+\begin{document}
+
+\maketitle
+
+\end{document}
diff --git a/note/note-setup-borderless.tex b/note/note-setup-borderless.tex
new file mode 100644
index 0000000..e3d9a29
--- /dev/null
+++ b/note/note-setup-borderless.tex
@@ -0,0 +1,160 @@
+%================================
+% note-setup-borderless.tex
+% fenglielie@qq.com 2025-09-12
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+\usepackage[most]{tcolorbox}
+
+\newcommand{\newtcbenvironment}[2]{
+    \tcolorboxenvironment{#1}{#2, enhanced, breakable, sharp corners, boxrule=0pt, colframe=white}
+    \tcolorboxenvironment{#1*}{#2, enhanced, breakable, rounded corners, boxrule=0pt, colframe=white}
+}
+
+%% define styles
+
+\newtcbenvironment{theorem}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{proposition}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{corollary}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{lemma}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{claim}{colframe=NavyBlue, colback=SkyBlue!8}
+
+\newtcbenvironment{definition}{colframe=ForestGreen, colback=ForestGreen!5}
+\newtcbenvironment{example}{colframe=RawSienna, colback=RawSienna!5}
+\newtcbenvironment{problem}{colframe=WildStrawberry!30, colback=WildStrawberry!5}
+
+%% cbox
+\newtcolorbox{cbox}[1][]{%
+    enhanced,
+    breakable,
+    sharp corners,
+    leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt,
+    colframe=SkyBlue,
+    colback=SkyBlue!8,
+    #1
+}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
diff --git a/note/note-setup-box.tex b/note/note-setup-box.tex
new file mode 100644
index 0000000..b3867fb
--- /dev/null
+++ b/note/note-setup-box.tex
@@ -0,0 +1,160 @@
+%================================
+% note-setup-box.tex
+% fenglielie@qq.com 2025-09-12
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+\usepackage[most]{tcolorbox}
+
+\newcommand{\newtcbenvironment}[2]{
+    \tcolorboxenvironment{#1}{#2, enhanced, breakable, sharp corners, boxrule=1pt}
+    \tcolorboxenvironment{#1*}{#2, enhanced, breakable, rounded corners, boxrule=1pt}
+}
+
+%% define styles
+
+\newtcbenvironment{theorem}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{proposition}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{corollary}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{lemma}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{claim}{colframe=NavyBlue, colback=SkyBlue!8}
+
+\newtcbenvironment{definition}{colframe=ForestGreen, colback=ForestGreen!5}
+\newtcbenvironment{example}{colframe=RawSienna, colback=RawSienna!5}
+\newtcbenvironment{problem}{colframe=WildStrawberry!30, colback=WildStrawberry!5}
+
+%% cbox
+\newtcolorbox{cbox}[1][]{%
+    enhanced,
+    breakable,
+    sharp corners,
+    leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt,
+    colframe=SkyBlue,
+    colback=SkyBlue!8,
+    #1
+}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
diff --git a/note/note-setup-leftsidebox.tex b/note/note-setup-leftsidebox.tex
new file mode 100644
index 0000000..a65b567
--- /dev/null
+++ b/note/note-setup-leftsidebox.tex
@@ -0,0 +1,160 @@
+%================================
+% note-setup-leftsidebox.tex
+% fenglielie@qq.com 2025-09-12
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+\usepackage[most]{tcolorbox}
+
+\newcommand{\newtcbenvironment}[2]{
+    \tcolorboxenvironment{#1}{#2, enhanced, breakable, sharp corners,leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt}
+    \tcolorboxenvironment{#1*}{#2, enhanced, breakable, rounded corners,leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt}
+}
+
+%% define styles
+
+\newtcbenvironment{theorem}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{proposition}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{corollary}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{lemma}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{claim}{colframe=NavyBlue, colback=SkyBlue!8}
+
+\newtcbenvironment{definition}{colframe=ForestGreen, colback=ForestGreen!5}
+\newtcbenvironment{example}{colframe=RawSienna, colback=RawSienna!5}
+\newtcbenvironment{problem}{colframe=WildStrawberry!30, colback=WildStrawberry!5}
+
+%% cbox
+\newtcolorbox{cbox}[1][]{%
+    enhanced,
+    breakable,
+    sharp corners,
+    leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt,
+    colframe=SkyBlue,
+    colback=SkyBlue!8,
+    #1
+}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
diff --git a/note/note-setup-mdframed.tex b/note/note-setup-mdframed.tex
new file mode 100644
index 0000000..c54144e
--- /dev/null
+++ b/note/note-setup-mdframed.tex
@@ -0,0 +1,157 @@
+%================================
+% note-setup-mdframed.tex
+% fenglielie@qq.com 2025-10-22
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+\usepackage[framemethod=TikZ]{mdframed}
+\mdfsetup{skipabove=0.5em,skipbelow=0.5em}
+
+\newcommand{\mydeclaretheoremstyle}[3]{
+    \declaretheoremstyle[headfont=\bfseries\sffamily#2, bodyfont=\normalfont, mdframed={#3}]{#1}
+}
+
+\mydeclaretheoremstyle{purplehalfbox}{\color{RoyalPurple!70!black}}{linewidth=2pt, rightline=false, topline=false, bottomline=false, linecolor=RoyalPurple, backgroundcolor=RoyalPurple!8}
+\mydeclaretheoremstyle{bluehalfbox}{\color{SkyBlue!70!black}}{linewidth=2pt, rightline=false, topline=false, bottomline=false, linecolor=NavyBlue, backgroundcolor=SkyBlue!8}
+
+\mydeclaretheoremstyle{greenfullbox}{\color{ForestGreen!40!black}}{linewidth=1pt, linecolor=ForestGreen, backgroundcolor=ForestGreen!5}
+\mydeclaretheoremstyle{redfullbox}{\color{RawSienna!70!black}}{linewidth=1pt, linecolor=RawSienna, backgroundcolor=RawSienna!5}
+
+\mydeclaretheoremstyle{pinkemptybox}{\color{WildStrawberry!70!black}}{linewidth=0pt, linecolor=WildStrawberry, backgroundcolor=WildStrawberry!5}
+\mydeclaretheoremstyle{brownemptybox}{\color{brown!70!black}}{leftline=false, rightline=false, topline=false, bottomline=false, skipabove=0em, skipbelow=0em}
+\mydeclaretheoremstyle{greenemptybox}{\color{ForestGreen!40!black}}{leftline=false, rightline=false, topline=false, bottomline=false, skipabove=0em, skipbelow=0em}
+
+\declaretheorem[style=purplehalfbox, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=purplehalfbox, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=purplehalfbox, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=purplehalfbox, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=bluehalfbox, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=bluehalfbox, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=bluehalfbox, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=bluehalfbox, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=bluehalfbox, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=bluehalfbox, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=greenfullbox, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=greenfullbox, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=redfullbox, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=redfullbox, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=pinkemptybox, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=pinkemptybox, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=brownemptybox, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=brownemptybox, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+%% cbox
+\newmdenv[
+    linecolor=SkyBlue,
+    backgroundcolor=SkyBlue!8,
+    leftline=true,
+    rightline=false,
+    topline=false,
+    bottomline=false,
+    linewidth=2pt,
+    roundcorner=0pt, % sharp corners
+    frametitlebackgroundcolor=SkyBlue!20,
+]{cbox}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
diff --git a/note/note-setup-simple.tex b/note/note-setup-simple.tex
new file mode 100644
index 0000000..4a2f8db
--- /dev/null
+++ b/note/note-setup-simple.tex
@@ -0,0 +1,132 @@
+%================================
+% note-setup-simple.tex
+% fenglielie@qq.com 2025-10-22
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+\newenvironment{cbox}{\begin{quote}}{\end{quote}}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}
diff --git a/note/note-setup.tex b/note/note-setup.tex
new file mode 100644
index 0000000..fa41482
--- /dev/null
+++ b/note/note-setup.tex
@@ -0,0 +1,160 @@
+%================================
+% note-setup.tex
+% fenglielie@qq.com 2025-09-12
+%================================
+
+\usepackage{amsmath,amsthm,amsfonts,amssymb}
+\usepackage{mathtools}
+\usepackage{mathrsfs}
+\usepackage{bm}
+\usepackage{extarrows}
+\usepackage[a4paper, margin=1in]{geometry}
+\usepackage{float}
+\usepackage{indentfirst}
+\usepackage{anyfontsize}
+\usepackage{booktabs,multirow,multicol}
+\usepackage[shortlabels,inline]{enumitem}
+\usepackage{appendix}
+
+\usepackage[dvipsnames]{xcolor}
+\usepackage{graphicx}
+\graphicspath{
+    {./figure/}{./figures/}{./image/}{./images/}{./graphic/}{./graphics/}{./picture/}{./pictures/}
+}
+\usepackage{subcaption}
+
+\usepackage[ruled,linesnumbered,noline]{algorithm2e}
+\usepackage{listings}
+\lstdefinestyle{simpleStyle}{
+    basicstyle=\ttfamily\small,
+    breaklines=true,
+    keywordstyle=\color{blue},
+    identifierstyle=\color{black},
+    stringstyle=\color{violet},
+    commentstyle=\color[RGB]{34,139,34},
+    showstringspaces=false,
+    numbers=left,
+    numbersep=2em,
+    numberstyle=\footnotesize,
+    frame=single,
+    framesep=1em,
+}
+\lstset{style=simpleStyle}
+
+\usepackage{hyperref}
+\hypersetup{
+    colorlinks=true,linkcolor=,urlcolor=cyan
+}
+
+\renewcommand*{\proofname}{\normalfont\bfseries Proof}
+
+\usepackage{thmtools}
+
+%% define environments
+
+\declaretheorem[style=plain, name=Theorem, numbered=yes, numberwithin=section]{theorem}
+\declaretheorem[style=plain, name=Theorem, numbered=no]{theorem*}
+
+\declaretheorem[style=plain, name=Proposition, numbered=yes, sibling=theorem]{proposition}
+\declaretheorem[style=plain, name=Proposition, numbered=no]{proposition*}
+
+\declaretheorem[style=plain, name=Corollary, numbered=yes, sibling=theorem]{corollary}
+\declaretheorem[style=plain, name=Corollary, numbered=no]{corollary*}
+
+\declaretheorem[style=plain, name=Lemma, numbered=yes, sibling=theorem]{lemma}
+\declaretheorem[style=plain, name=Lemma, numbered=no]{lemma*}
+
+\declaretheorem[style=plain, name=Claim, numbered=yes, sibling=theorem]{claim}
+\declaretheorem[style=plain, name=Claim, numbered=no]{claim*}
+
+\declaretheorem[style=definition, name=Definition, numbered=yes, numberwithin=section]{definition}
+\declaretheorem[style=definition, name=Definition, numbered=no]{definition*}
+
+\declaretheorem[style=definition, name=Example, numbered=yes, numberwithin=section]{example}
+\declaretheorem[style=definition, name=Example, numbered=no]{example*}
+
+\declaretheorem[style=definition, name=Problem, numbered=yes, numberwithin=section]{problem}
+\declaretheorem[style=definition, name=Problem, numbered=no]{problem*}
+
+\declaretheorem[style=remark, name=Remark, numbered=yes, numberwithin=section]{remark}
+\declaretheorem[style=remark, name=Remark, numbered=no]{remark*}
+
+\declaretheoremstyle[headfont=\color{orange!80}\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt]{notestyle}
+
+\declaretheorem[style=notestyle, name=Note, numbered=yes, numberwithin=section]{note}
+\declaretheorem[style=notestyle, name=Note, numbered=no]{note*}
+
+\declaretheoremstyle[headfont=\bfseries, bodyfont=\normalfont, spaceabove=3pt, spacebelow=3pt, qed=\ensuremath{\square}]{solutionstyle}
+
+\declaretheorem[style=solutionstyle, name=Solution, numbered=yes, numberwithin=section]{solution}
+\declaretheorem[style=solutionstyle, name=Solution, numbered=no]{solution*}
+
+\usepackage[most]{tcolorbox}
+
+\newcommand{\newtcbenvironment}[2]{
+    \tcolorboxenvironment{#1}{#2, enhanced, breakable, sharp corners, boxrule=1pt}
+    \tcolorboxenvironment{#1*}{#2, enhanced, breakable, rounded corners, boxrule=1pt}
+}
+
+%% define styles
+
+\newtcbenvironment{theorem}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{proposition}{colframe=RoyalPurple, colback=RoyalPurple!8}
+\newtcbenvironment{corollary}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{lemma}{colframe=NavyBlue, colback=SkyBlue!8}
+\newtcbenvironment{claim}{colframe=NavyBlue, colback=SkyBlue!8}
+
+\newtcbenvironment{definition}{colframe=ForestGreen, colback=ForestGreen!5}
+\newtcbenvironment{example}{colframe=RawSienna, colback=RawSienna!5}
+\newtcbenvironment{problem}{colframe=WildStrawberry!30, colback=WildStrawberry!5}
+
+%% cbox
+\newtcolorbox{cbox}[1][]{%
+    enhanced,
+    breakable,
+    sharp corners,
+    leftrule=2pt, rightrule=0pt, toprule=0pt, bottomrule=0pt,
+    colframe=SkyBlue,
+    colback=SkyBlue!8,
+    #1
+}
+
+%% cover
+\usepackage{titling}
+\newcommand{\extrainfo}{}
+\renewcommand{\extrainfo}[1]{\renewcommand{\extrainfocontent}{#1}}
+\newcommand{\extrainfocontent}{}
+\newcommand{\makecover}[1]{%
+    \begin{titlepage}
+        \newgeometry{margin=0in}
+        \parindent=0pt
+        \includegraphics[width=\linewidth]{#1} % size = 1280*1024
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft{\bfseries \Huge \thetitle} \\[0.6pt]
+                \rule{0.618\textwidth}{4pt} \\
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox{0.618\textwidth}{%
+                \raggedleft\Large
+                \begin{tabular}{r}
+                    \theauthor \\
+                    \thedate   \\
+                \end{tabular}%
+            }
+        \end{center}
+        \vfill
+        \begin{center}
+            \parbox[t]{0.7\textwidth}{\centering \itshape \extrainfocontent}
+        \end{center}
+        \vfill
+    \end{titlepage}
+    \restoregeometry
+    \thispagestyle{empty}
+}
+% USAGE
+% \extrainfo{xxx}
+% \makecover{/path/to/cover.png}