\documentclass[aspectratio=43]{beamer}
\usetheme{HUST}
\usepackage{graphicx}
\usepackage{slashed}
\usepackage{datetime}
\graphicspath{{plots/}}
\usepackage{hyperref}
\usepackage{cancel}
\usepackage[absolute,overlay]{textpos}
\def\Put(#1,#2)#3{\leavevmode\makebox(0,0){\put(#1,#2){#3}}}
\def\mydate{\leavevmode\hbox{\the\year-\twodigits\month-\twodigits\day}}
\def\twodigits#1{\ifnum#1<10 0\fi\the#1}
\newcommand\Wider[2][3em]{
\makebox[\linewidth][c]{
\begin{minipage}{\dimexpr\textwidth+#1\relax}
\raggedright
\centering#2
\end{minipage}
}
}
\def\meetingname{HUST group meeting}
\title[\meetingname]{Title here}
\author[Z Zhan]{Zhao Zhan}
\institute[HUST]{Huazhong University of Science and Technology}
\date[\mydate]{\meetingname\\\today}
\begin{document}
\begin{frame}[plain,t]
\titlepage
\end{frame}
\begin{frame}
\frametitle{Contents}
\tableofcontents
\end{frame}
%------------------------------------------------------------
\section{Introduction}
\begin{frame}{Introduction}
\end{frame}
\section{Conclusion}
\begin{frame}{Conclusion}
\begin{itemize}
\item $A+B=C$
\item $p_T=13$
\end{itemize}
\end{frame}
\begin{frame}
\centering
\Huge
Questions are welcome.
\end{frame}
\end{document}
