$\rm \LaTeX$ Manual

\usepackage{subfig}
\begin{figure}[htbp]
    \begin{minipage}[t]{0.5\linewidth}
        \includegraphics[]{}
    \end{minipage}
    \begin{minipage}[t]{0.5\linewidth}
        \includegraphics[]{}
    \end{minipage}
\end{figure}

\begin{figure}[htbp]
    \centering
    \subfloat[\centering title1]{{\includegraphics[width=0.3\linewidth]{figure 1} }}
    \quad
    \subfloat[\centering title2]{{\includegraphics[width=0.3\linewidth]{figure 2} }}
    \caption{caption1}
    \label{1}
\end{figure}

\usepackage{multirow}
\begin{table}[htbp]
    \centering
    \begin{tabular}{|c|c|}
        \hline
        \multirow{2}{*}{Cross It}&N\\
        &N\\
        \hline
    \end{tabular}
\end{table}

\usepackage{makecell}
\begin{table}[htbp]
    \centering
    \begin{tabular}{c}
    	\hline
    	\makecell{First Line\\Second Line}\\
    	\hline
    \end{tabular}
\end{table}

\documentclass[UTF8,a4paper,14pt,twocolumn]{ctexart}
\begin{document}
    \twocolumn[
    \begin{@twocolumnfalse}
        % something here may cross two column
    \end{@twocolumnfalse}]
\end{document}

\usepackage[colorlinks,linkcolor=blue]{hyperref}
% include this package as the final one
\href{https://www.google.com}{Google}

\usepackage{listings}
\lstset{numbers=left,
    numberstyle=\tiny,
    basicstyle=\small\ttfamily,
    stringstyle=\color{purple},
    keywordstyle=\color{red!25!green!33!blue!100}\bfseries,
    commentstyle=\color{olive},
    %directivestyle=\color{blue},
    frame=shadowbox,
    framerule=0pt,
    backgroundcolor=\color{red!0.5!green!0.5!blue!0.5!},
    rulesepcolor=\color{red!20!green!20!blue!20}}
\begin{lstlisting}[language={[ANSI]C}]
\end{lstlisting}

\usepackage{listings}
\usepackage[cache=false]{minted}
\begin{minted}[frame=single, tabsize=4,breaklines=true,breakanywhere=true]{js}
print("\n")
\end{minted}
\mintinline{python}{print("\n")}

\providecommand{\tightlist}{%
    \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}

\usepackage[colorlinks,linkcolor=blue]{hyperref}
\hypersetup{
    pdftitle={None},
    pdfauthor={Nobody}
}

\renewcommand\thesection{\arabic{section}}
\renewcommand\thesubsection{\thesection.\arabic{subsection}}