XeLaTeX template for short novel (as book)

book.tex

\documentclass[zihao=-4,oneside,UTF8]{ctexbook}
\usepackage{titlesec,fancyhdr,xltxtra,hyperxmp}
\usepackage[xetex,a4paper,centering,scale=0.8]{geometry}

\input{config.tex}

\xeCJKsetup{CheckSingle}

\pagestyle{fancy}
\setmainfont{\bookmainfont}
\setCJKmainfont[BoldFont=\bookboldfont,ItalicFont=\bookitalicfont]{\bookmainCJKfont}

\usepackage[bookmarksnumbered,
			colorlinks=false,
			linkcolor=blue]{hyperref}
\hypersetup{pdfauthor=\bookauthor,
			pdftitle=\booktitle,
			pdfsubject=\booksubject,
			pdfkeywords=\bookkeywords,
			pdfcopyright=\bookcopyright,
			pdflicenseurl=\booklicenseurl,
			pdfdate=\date
			pdfdisplaydoctitle=true,
			pdflang=\booklang,
			pdfstartview=FitH}

\begin{document}

\titlespacing{\chapter}{0cm}{0cm}{1em}
\titleformat{\chapter}{\itshape\centering\Huge}{\chinese{chapter}}{1em} {}

\title{\fontsize{50pt}{50pt}\selectfont{\CJKfontspec{\booktitlefont} \booktitle}}
\author{
	\fontsize{20pt}{50pt} \selectfont 
	\booksubject \\[0.5em]
	\fontsize{20pt}{50pt} \selectfont 
	\bookauthor
	\thanks{\bookthanks}
}
\date{\bookdate}
\maketitle
\frontmatter
	\tableofcontents
	%\thispagestyle{empty}
\mainmatter
	\input{content.tex}
\backmatter

\end{document}

config.tex

\newcommand{\booksubject}{}%Subject
\newcommand{\booktitle}{}%Title
\newcommand{\bookauthor}{}%Author
\newcommand{\bookthanks}{}%Thanks
\newcommand{\bookkeywords}{}%Keywords in metadata
\newcommand{\bookdate}{}%Date in title page
\newcommand{\booklang}{}%PDF language in metadata
\newcommand{\bookcopyright}{}%Copyright in metadata
\newcommand{\booklicenseurl}{}%License URL in metadata
\newcommand{\bookmainfont}{}%Main font for non-CJK characters
\newcommand{\bookmainCJKfont}{}%Main font for CJK characters
\newcommand{\bookboldfont}{}%Font for bold characters
\newcommand{\bookitalicfont}{}%Font for italic characters
\newcommand{\booktitlefont}{}%Font for title

content.tex

%Add your content here