\documentclass{beamer}
\usepackage{ctex, hyperref}
\usepackage[T1]{fontenc}
% other packages
\usepackage{latexsym,amsmath,xcolor,multicol,booktabs,calligra}
\usepackage{graphicx,pstricks,listings,stackengine}
\author{Author}
\title{USTC Beamer Theme}
% \subtitle{Cospa group meeting}
\subtitle{Subtitle}
\institute{Institute}
\date{date}
\usepackage{USTC_beamer}
% \renewcommand{\familydefault}{\rmdefault}
% defs
\def\cmd#1{\texttt{\color{red}\footnotesize $\backslash$#1}}
\def\env#1{\texttt{\color{blue}\footnotesize #1}}
\definecolor{deepblue}{rgb}{0,0,0.5}
\definecolor{deepred}{rgb}{0.6,0,0}
\definecolor{deepgreen}{rgb}{0,0.5,0}
\definecolor{halfgray}{gray}{0.55}
\lstset{
basicstyle=\ttfamily\small,
keywordstyle=\bfseries\color{deepblue},
emphstyle=\ttfamily\color{deepred}, % Custom highlighting style
stringstyle=\color{deepgreen},
numbers=left,
numberstyle=\small\color{halfgray},
rulesepcolor=\color{red!20!green!20!blue!20},
frame=shadowbox,
}
\begin{document}
% \kaishu
\renewcommand{\figurename}{Fig.} % Comment this out you will have “图1”
% logo
\begin{frame}
\titlepage
\begin{figure}[htpb]
\begin{center}
\includegraphics[width=0.2\linewidth]{pic/ustc_logo.pdf}
\end{center}
\end{figure}
\end{frame}
\begin{frame}
\tableofcontents[sectionstyle=show,subsectionstyle=show/shaded/hide,subsubsectionstyle=show/shaded/hide]
\end{frame}
\section{Based on THU beamer theme}
\begin{frame}{Please refer to THU beamer theme for more operations}
\begin{itemize}
\item \url{https://www.overleaf.com/latex/templates/thu-beamer-theme/vwnqmzndvwyb}
\end{itemize}
\end{frame}
\begin{frame}{Another USTC beamer theme on overleaf}
\begin{itemize}
\item \url{https://www.overleaf.com/latex/templates/ustc-presentation-slash-beamer-template/rvpmgprgfhmr}
\end{itemize}
\end{frame}
\begin{frame}{This beamer theme is simple but everyone can know how to use it.}
\begin{itemize}
\item I hope it helps.
\end{itemize}
\end{frame}
\section{Commonly used operations}
\begin{frame}{Slide title}
\begin{itemize}
\item Items
\begin{itemize}
\item Smaller items.
\end{itemize}
\item Equations
\begin{equation}
a^2+b^2 = c^2
\end{equation}
\item Footnote \footnote{footnote}
\end{itemize}
\end{frame}
\begin{frame}{A two-column slide}
\begin{columns}
\column{0.5\textwidth}
\begin{figure}
\centering
\includegraphics[width=5cm]{pic/Vphi.pdf}
\caption{Caption of Fig.1}
\label{fig:enter-label}
\end{figure}
\begin{equation}
\scriptsize
\frac{\mathrm d^2 \delta\Phi_k}{\mathrm d z^2}+\left[P-2Q\cos(2z)\right]\delta\Phi_k=0
\end{equation}
\bigskip
\column{0.5\textwidth}
\begin{figure}
\centering
\includegraphics[width=4cm]{pic/PQ.png}
\caption{Caption}
\label{fig:enter-label}
\end{figure}
\end{columns}
\end{frame}
\begin{frame}{A one-column slide with a big figure (could be equations that are too many to write)}
\begin{figure}[h]
\centering
\includegraphics[height = 0.7\textheight]{pic/Vphi.pdf}
\end{figure}
\end{frame}
\begin{frame}{A two-column slide with items and a figure}
\begin{columns}
\column{0.4\textwidth}
\begin{itemize}
\item {item1
}
\item {item2
}
\end{itemize}\
\bigskip
\bigskip
\bigskip
\column{0.5\textwidth}
\begin{figure}
\centering
% Requires \usepackage{graphicx}
\includegraphics[width=6cm]{pic/Vphi.pdf}
\caption{Caption}
\label{secert_sharing_figures}
\end{figure}
\end{columns}
\end{frame}
\section{Conclusions}
\begin{frame}
\begin{center}
{\Huge\calligra Thanks!}
\end{center}
\end{frame}
\end{document}