\documentclass{article}
\usepackage[top=2cm, bottom=2cm, left=3cm, right=2cm]{geometry}
\usepackage{xeCJK}
\title{notes}
\author{abc}
\date{September 2020}
\begin{document}
\maketitle
\section{1st section title}
\end{document}
原文：https://www.cnblogs.com/hmzh-dl/p/13733734.html