\documentclass[zihao = -4,openany]{easybook}
\ctexset
  {
    style =
      {
        color = forest,
        % cite = authoryear,
        thmbox = true,
        % capdash = true,
        % multoc = true,
        % withpart = true,
        % perpart = true,
        perpage = true
      },
    link =
      {
        hyperlink = various,
        linkcolor = skyblue,
        linktopage = false
      },
    spread =
      {
        linespread = 1.355,
        tabspread = 1.05,
        mathspread = 1,
        capspread = 1,
        fnspread = 1
      },
    elfont =
      {
        tabfont = \sffamily\small,
        figfont = \sffamily\small,
        lstfont = \sffamily\small,
        fnfont = \rmfamily,
        marfont = \sffamily\footnotesize
      },
    % secnumdepth = 2,
    % tocdepth = 2
  }

\AfterPreamble
  {
    \title{\sffamily easybook书籍文档类}
    \author
      {
        瞿毅\thanks{texeasybook@foxmail.com.} \\
        \textcolor[HTML]{c71d23}{\faGit}~\url{https://gitee.com/TeX-doc/easybook}\thanks{Gitee为项目的主要发布地址。} \\
        \faGithub~\url{https://github.com/TeX-doc/easybook} \\
        \textcolor[HTML]{00c2ff}{\faEdge}~\url{https://latexstudio.net} \\
        \url{https://ctan.org/pkg/easybook}
      }
    \date{2021/01/08\hskip\ccwd\relax v1.1}
  }

\begin{document}
\frontmatter
\maketitle
\subfile{pages/preface}
\tableofcontents

\mainmatter
\part{使用示例}
\subfile{pages/chapter1}
\subfile{pages/chapter2}
\subfile{pages/chapter3}
\subfile{pages/appendix}

\backmatter
\bibliography{ref/refs}
\listoffigures
\listoftables
\listoflistings
\printindex
\end{document}