把代码贴出来，我帮你run一下吧

\documentclass{article}
\title{Hello World}
\begin{document}
\maketitle
\section{Hello China} China is in East Asia.
\subsection{Hello Beijing} Beijing is the capital of China.
\subsubsection{Hello Dongcheng District}
\paragraph{Tian'anmen Square}is in the center of Beijing
\subparagraph{Chairman Mao} is in the center of Tian'anmen Square
\subsection{Hello Guangzhou}
\paragraph{Sun Yat-sen University} is the best university in Guangzhou.
\end{document}

谢谢你

我run 了完全没有问题

使用xelatex