pandoc_latex_template.tex

\documentclass{article}
\usepackage{hyperref}
\usepackage{indentfirst}
\usepackage{xeCJK}
\setcounter{secnumdepth}{0}
\setlength{\parindent}{2em}
\setlength{\parskip}{1em}
\setmainfont{DejaVu Serif}
\setCJKmainfont{Source Han Serif CN}

\begin{document}
$body$
\end{document}