\pagestyle{fancy}% Enable the custom headers and footers
\renewcommand{\chaptermark}[1]{\markboth{\sffamily\normalsize\bfseries\chaptername\ \thechapter.\ #1}{}}% Styling for the current chapter in the header
\renewcommand{\chaptermark}[1]{\markboth{\sffamily\normalsize\bfseries\chaptername\ \thechapter.\ #1\quad 肖桐\ 朱靖波}{}}% Styling for the current chapter in the header
\renewcommand{\sectionmark}[1]{\markright{\sffamily\normalsize\thesection\hspace{5pt}#1}{}}% Styling for the current section in the header
\fancyhf{}% Clear default headers and footers
\fancyhead[LE,RO]{\sffamily\normalsize\thepage}% Styling for the page number in the header
\fancyhead[LO]{\rightmark}% Print the nearest section name on the left side of odd pages
\fancyhead[RE]{\leftmark}% Print the current chapter name on the right side of even pages
%\fancyfoot[C]{\thepage} % Uncomment to include a footer
%\fancyfoot[RE]{\tiny{肖桐\ 朱靖波}}
%O-odd page,E-even page,R-right area,L-left area,C-center area
%\fancyfoot[C]{\thepage} % Uncomment to include a footer底部中间页码
\renewcommand{\headrulewidth}{0.5pt}% Thickness of the rule under the header