答案1
一个例子:
\documentclass{report}
\newtheorem{construction}{Construction}[section]
\counterwithout{equation}{chapter}
\usepackage{lipsum}
\usepackage{xcolor}
\usepackage[colorlinks,linkcolor=magenta]{hyperref}
\begin{document}
\setcounter{equation}{22}
\setcounter{chapter}{3}
\chapter{One}
\setcounter{section}{8}
\section{One}
\begin{construction}[title name]\label{cons:4.9.1}
\lipsum[1]
\begin{equation}\label{eqn:23}
E=m\cdot c^2
\end{equation}
and
\begin{equation}\label{eqn:24}
c=\sqrt{\frac{E}{m}}
\end{equation}
\end{construction}
\clearpage
Refer to the construction \ref{cons:4.9.1}.
Refer to the equation (\ref{eqn:23}) and (\ref{eqn:24}).
\end{document}