diff --git a/beamer/beamer-setup-console.tex b/beamer/beamer-setup-console.tex
deleted file mode 100644
index 0173a50..0000000
--- a/beamer/beamer-setup-console.tex
+++ /dev/null
@@ -1,79 +0,0 @@
-%================================
-% 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/demo/demo-console.pdf b/beamer/demo/demo-console.pdf
deleted file mode 100644
index a065fc2..0000000
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diff --git a/lab-report/example.py b/lab-report/example.py
deleted file mode 100644
index 00eb1fe..0000000
--- a/lab-report/example.py
+++ /dev/null
@@ -1,13 +0,0 @@
-# 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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index 45eaab9..0000000
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diff --git a/lab-report/figures/demo2-1.png b/lab-report/figures/demo2-1.png
deleted file mode 100644
index bfc56d8..0000000
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diff --git a/lab-report/figures/demo2-2.png b/lab-report/figures/demo2-2.png
deleted file mode 100644
index bbac8c4..0000000
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diff --git a/lab-report/lab-report.tex b/lab-report/lab-report.tex
deleted file mode 100644
index 85907bf..0000000
--- a/lab-report/lab-report.tex
+++ /dev/null
@@ -1,114 +0,0 @@
-%!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}