如何制作从标题编号开始编号的编号列表？

Question

我需要这样做：

如图所示，每个新标题的数量也增加一。

我发现了一个类似的例子，但是略有不同： stackoverflow.com/q/2007627

Answer 1

解决方案：

\renewcommand\thesection{\arabic{section}} % Optional. Removing the chapter number from the section number.

\section{First title} 
\begin{enumerate}[label={\thesection.\arabic*.}]
    \item First topic:
    \begin{enumerate}[label*=\arabic*.]
        \item First Subtopic;
        \item Second Subtopic;
        \item Third Subtopic.
    \end{enumerate}
    \item Second topic:
    \begin{enumerate}[label*=\arabic*.]
        \item First Subtopic;
        \item Second Subtopic;
        \item Third Subtopic.
    \end{enumerate}
\end{enumerate}

\section{Second title}  
\begin{enumerate}[label={\thesection.\arabic*.}]
    \item First topic:
    \begin{enumerate}[label*=\arabic*.]
        \item First Subtopic;
        \item Second Subtopic;
        \item Third Subtopic.
    \end{enumerate}
    \item Second topic:
    \begin{enumerate}[label*=\arabic*.]
        \item First Subtopic;
        \item Second Subtopic;
        \item Third Subtopic.
    \end{enumerate}
\end{enumerate}