\documentclass{article}
\usepackage[userlang=zh]{pgf-PeriodicTable}%

\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{0pt}%

\begin{document}\noindent%
\setmainfont{SimSun}
\pgfPTzhtextfontSS{SimSun}% font for names of elements Z={109,112.113,117,118} ->
%                                             meitnerium, copernicium, nihonium, tennessine, oganesson
\pgfPTzhtextfontSSB{SimSun-ExtB}% font for names of elements Z={104,105,106,107,108,110,111,114} ->
%                                                      rutherfordium, dubnium, seaborgium, bohrium, hassium,darmstadtium, roentgenium, flerovium
\pgfPTzhtextfontLv{SimSun-ExtB}% font for name of element Z={116} -> livermorium

\pgfPT[font=SimSun]
\end{document}