以下 MWE
% !TEX encoding = UTF-8 Unicode
% !TEX TS-program = XeLaTeX
% !TEX TS-program = LuaLaTeX
\documentclass{article}
\usepackage{unicode-math}
%\setmathfont{texgyrepagella-math.otf}
\begin{document}
$
以下 MWE
% !TEX encoding = UTF-8 Unicode
% !TEX TS-program = XeLaTeX
% !TEX TS-program = LuaLaTeX
\documentclass{article}
\usepackage{unicode-math}
%\setmathfont{texgyrepagella-math.otf}
\begin{document}
$