Do not use figure* environment for title page

https://tex.stackexchange.com/questions/57584/twocolumn-begintwocolumnfalse-explained

Author: haiiliin

_extensions/chinese-journal/partials/before-body.tex

@@ -1,7 +1,7 @@
 % 生成标题
 $if(twocolumn)$
-\twocolumn
-\begin{figure*}[t]
+\twocolumn[
+\begin{@twocolumnfalse}
 $endif$
 
 \begin{center}
@@ -59,13 +59,14 @@
       \textbf{Abstract:}\quad $eabstract$ \\
       \textbf{Keywords:}\quad $for(ekeywords/allbutlast)$$ekeywords$；$endfor$ $for(ekeywords/last)$$ekeywords$$endfor$
     }
+    \vspace{20pt}
    }
  }
 \end{center}
 
 $if(twocolumn)$
-\twocolumn
-\end{figure*}
+\end{@twocolumnfalse}
+]
 $endif$
 
 \footnote{