\documentclass[a4paper,dvipdfm]{article}
\usepackage{fontspec}
\setromanfont{STSong}
\XeTeXlinebreaklocale "zh"
\XeTeXlinebreakskip = 0pt plus 1pt
\usepackage[dvipdfm]{graphicx}
\usepackage[usenames,dvipsnames]{color}
\usepackage{xcolor}
\usepackage{threeparttable}
\usepackage[left=2.25cm,right=2.25cm,top=2.5cm,bottom=2.5cm]{geometry}
\DeclareGraphicsExtensions{.eps,.ps,.eps.gz,.ps.gz,.eps.Z,.EPS,.pdf,.PDF}
\usepackage{caption2}
%\usepackage[rightcaption]{sidecap}
\usepackage{colortbl}
\arrayrulecolor{black}
\usepackage{booktabs}
\usepackage{multirow}
\usepackage{textcomp}
\usepackage{amsfonts}
\usepackage[section]{placeins}
\usepackage{fancyhdr}
\pagestyle{fancy}
\lhead{Happy \LaTeX{ing}}
\chead{}
\rhead{\bfseries }
\lfoot{Wen Zhang}
\cfoot{\textcolor[rgb]{0.50,0.00,0.50}{\bfseries \thepage}}
\rfoot{Personal Use}
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0.4pt}
%\usepackage{CJK}
\usepackage[dvipdfm,a4paper,CJKbookmarks,bookmarks=true,bookmarksopen=true]{hyperref}
\hypersetup{
pdftitle={},
pdfauthor={Wen Zhang},
pdfkeywords={},
bookmarksnumbered,
pagebackref=true,
breaklinks=true,
% pdfview=FitH, % Or try pdfstartview={FitV}, This lead to uncorrect bookmarks
urlcolor=cyan,
colorlinks=true,
citecolor=magenta, %citeref's color
linkcolor=magenta,
}
\title{}
\author{}
\date{} % delete this line to display the current date
\begin{document}
%\begin{CJK*}{GB}{kai,song,hei,fs,li,you}
\newpage
\small
\bibliographystyle{elsart-num}
%\bibliographystyle{wen}
\bibliography{}
%\end{CJK*}
\end{document}