main.tex

\documentclass[t,11pt]{beamer} % 8pt -- 14pt, 17pt and 20pt
\usetheme{bjtu}
\usecolortheme{bjtucolor}

% packages
\usepackage{graphicx}
\graphicspath{ {./images/} {./logo/}}
\usepackage{caption}
\usepackage{booktabs}
\usepackage{xeCJK}
\usepackage{fontspec}
\setCJKmainfont{HWzhongsong.ttf}
\setCJKmonofont{HWzhongsong.ttf}
\setromanfont{Times New Roman}
\setsansfont{Arial}

\usepackage[english]{babel}
\usepackage{xcolor}
\usepackage{amsmath}
\usepackage{textpos}
\usepackage{float}
\usepackage{hyperref}
% \hypersetup{
%     colorlinks=true,
%     linkcolor=blue,
%     filecolor=magenta,      
%     urlcolor=cyan,
% }


% show toc before each chapter
\AtBeginSection[]
{
  \begin{frame}
    \frametitle{Table of Contents}
    \setcounter{tocdepth}{2} % do not show subsection in toc
    \tableofcontents[currentsection]
  \end{frame}
}

% title,author,data etc.
\title{Title of the Presentation}
\subtitle{Subtitle}
\institute{\url{https://github.com/xuyangcao}}
\author{Xuyang Cao}
\date{2020.07.03}



% document body
\begin{document}
% title
\frame[plain]{\titlepage \addtocounter{framenumber}{-1}}        
% logo
\logo{\includegraphics[width=1cm,height=1cm]{logo/logo_bjtu_light_blue}}

% table of contents
% comment this section if unnecessary
\begin{frame}{Table of Contents}           % table of contents frame 
    \setcounter{tocdepth}{2}               % do not show subsection
    \tableofcontents                       % table of contents
\end{frame}

% =====================
% generally, you do not need to change the document body any more
% please edit body.tex directly
\input{body.tex} 
% =====================

% reference
% comment this section if unnecessary
\begin{frame}[allowframebreaks]{Reference}
    \vspace{-0.5em}
    \nocite{*} % show all the reference
    \bibliographystyle{ieeetr}
    \tiny\bibliography{references}
\end{frame}

\end{document}