\documentclass[aspectratio=169]{beamer}
\usepackage[english]{babel}
\usepackage{fancyhdr}        % header footer
\usepackage{graphicx}        % figure
\usepackage{booktabs}
\usepackage{xcolor}
\usepackage{bookmark}
\usepackage{hyperref}
\usepackage{graphicx} % Allows including images
\usepackage{booktabs} % Allows the use of \toprule, \midrule and \bottomrule in tables
\usepackage{tikz}
\usepackage[ruled,linesnumbered]{algorithm2e}
\usepackage{adjustbox}
\usepackage{ctex}
% \usefonttheme[onlymath]{serif}

\author{丛宇}
\title{中文标题}
\date{\today}

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%     \frame{\frametitle{Outline}\tableofcontents[currentsection,
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\usetheme{Bar169}

\begin{document}

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      \makeatletter
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      \begin{frame}[plain]
         % Print the title page as the first slide
         \titlepage
      \end{frame}

      \begin{frame}[plain]{Overview}
         % Throughout your presentation, if you choose to use \section{} and \subsection{} commands, these will automatically be printed on this slide as an overview of your presentation
         \tableofcontents
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   \endgroup
\section{Reachability Game}
\begin{frame}{可达性博弈}
   中文测试
\end{frame}
\section{Reachability Game2}
\section{Reachability Game3}

\begin{frame}{math test}
   \begin{itemize}
      \item How to find $T_1$\\

      $T_1=\{v\in T : v$ can't reach $T\cup Reach(T,0)\}$\\
      $T_1=\{v\in T: v$ can only reach $V\setminus \{T\cup Reach(T,0)\}\}$\\
      P1 wants to reach $V\setminus \{T\cup Reach(T,0)\}\}$, P0 tries to avoid $V\setminus \{T\cup Reach(T,0)\}\}$.\\
      compute $Reach(V\setminus \{T\cup Reach(T,0)\}\},1)$

      \item Time complexity\\
          $O(m)$ to find $T_i$, at most $O(n)$ times. Worst-case $O(nm)$.
  \end{itemize}

\end{frame}
\begin{frame}
   \frametitle{references}



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\end{document}