Empty latex template (For CJK)

empty.tex

\documentclass{article}
\usepackage{CJK}
\usepackage{indentfirst}
\usepackage[CJKbookmarks]{hyperref}
\usepackage{float}
\usepackage{amsmath,bm}
\usepackage{url}
\usepackage{graphicx}

\setlength{\parindent}{2em}

\title{my_title}
\author{}
\date{}

\begin{document}
\begin{CJK*}{UTF8}{gbsn}
\CJKtilde

\end{CJK*}
\end{document}