\documentclass{article}
\usepackage{luatexja-fontspec}
\setmainjfont{SimSun}
\parindent0pt
\def\kenten#1{\texttt{#1:}&{\jfontspec{#1}你好啊。\kern-4\zw ＿＿＿＿}}
\begin{document}
\begin{tabular}{ll}
\kenten{SimSun}\\
\kenten{AdobeSongStd-Light}\\
\kenten{MingLiU}\\
\kenten{IPAexMincho}\\
\kenten{SimHei}\\
\kenten{KaiTi}\\
\kenten{SimFang}\\
\end{tabular}
\end{document}
