brackets problem

elegantpaper-en.tex

@@ -45,7 +45,7 @@ This template is based on the standard \LaTeX{} article class, hence the argumen
 Language mode option \lstinline{lang} allows two alternative inputs, \lstinline{lang=en} (default)  for English or \lstinline{lang=cn} for Chinese. \lstinline{lang=cn} will make the caption of figure/table, abstract name, refname etc. Chinese. You can use this option as
 \begin{lstlisting}
 \documentclass[lang=cn]{elegantpaper} % or
-\documentclass{cn}{elegantpaper} 
+\documentclass[cn]{elegantpaper} 
 \end{lstlisting}
 \textbf{Note:} Under the English mode \lstinline{lang=en}, Chinese characters are not allowed. To type in Chinese, please load  \lstinline{ctex} or \lstinline{xeCJK} package at the preamble as:
 \begin{lstlisting}