% 导言区
\documentclass[a4paper, 12pt, fontset=ubuntu]{article} % book, report, letter
\usepackage{ctex} % Use chinese package

\title{\heiti [[book_title]]}
\author{\kaishu [[book_author]]}
\date{\today}

% 正文区

\begin{document}
    \maketitle % 头部信息在正文显示
    \newpage
    \tableofcontents % 显示索引列

    [[#sections]]
    \include{ [[filename]]}
    [[/sections]]

\end{document}