diff --git a/elegantpaper-cn.pdf b/elegantpaper-cn.pdf
index 5a3d6e2..6a3d8bb 100644
Binary files a/elegantpaper-cn.pdf and b/elegantpaper-cn.pdf differ
diff --git a/elegantpaper-cn.tex b/elegantpaper-cn.tex
index 659f9cd..02a2fd4 100644
--- a/elegantpaper-cn.tex
+++ b/elegantpaper-cn.tex
@@ -1,7 +1,7 @@
 %!TEX program = xelatex
 % 完整编译方法 1 pdflatex -> bibtex -> pdflatex -> pdflatex
 % 完整编译方法 2: xelatex -> bibtex -> xelatex -> xelatex
-\documentclass[lang=cn,11pt]{elegantpaper}
+\documentclass[lang=cn,11pt,numbers]{elegantpaper}
 
 \title{ElegantPaper: 一个优美的 \LaTeX{} 工作论文模板}
 \author{\href{https://ddswhu.me/}{邓东升}}
@@ -177,7 +177,6 @@ The content of conclusion section.
 \end{lstlisting}
 
 \nocite{*}
-
 \bibliography{wpref}
 
 \end{document}
diff --git a/elegantpaper-en.pdf b/elegantpaper-en.pdf
index 6aee7ed..5c5008a 100644
Binary files a/elegantpaper-en.pdf and b/elegantpaper-en.pdf differ
diff --git a/elegantpaper-en.tex b/elegantpaper-en.tex
index 8238def..0b51059 100644
--- a/elegantpaper-en.tex
+++ b/elegantpaper-en.tex
@@ -173,6 +173,7 @@ The content of conclusion section.
 \end{lstlisting}
 
 \nocite{en1,en2}
+
 \bibliography{wpref}
 
 \end{document}
diff --git a/elegantpaper.cls b/elegantpaper.cls
index 47c618f..38bd5eb 100644
--- a/elegantpaper.cls
+++ b/elegantpaper.cls
@@ -20,6 +20,10 @@
 \DeclareVoidOption{cn}{\ekv{lang = cn}}
 \DeclareVoidOption{en}{\ekv{lang = en}}
 
+\DeclareStringOption[numbers]{cite}[numbers]
+\DeclareVoidOption{numbers}{\ekv{cite=numbers}}
+\DeclareVoidOption{authoryear}{\ekv{cite=authoryear}}
+\DeclareVoidOption{super}{\ekv{cite=super}}
 % \PassOptionsToClass{11pt}{article}
 
 \DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{article}}
@@ -61,7 +65,16 @@
 \definecolor{winered}{rgb}{0.5,0,0}
 
 % bib-settings
-\RequirePackage{natbib}
+\ifdefstring{\ELEGANT@cite}{authoryear}{
+	\RequirePackage[authoryear,sort&compress]{natbib}
+}{\relax}
+\ifdefstring{\ELEGANT@cite}{numbers}{
+	\RequirePackage[numbers,sort&compress]{natbib}
+}{\relax}
+\ifdefstring{\ELEGANT@cite}{super}{
+	\RequirePackage[super,sort&compress]{natbib}
+}{\relax}
+
 \setlength{\bibsep}{0.0pt}
 \def\bibfont{\footnotesize}
 
@@ -127,7 +140,7 @@
 	\newcommand{\keywords}[1]{\vskip2ex\par\noindent\normalfont{\bfseries 关键词: } #1}
 	\newcommand\figref[1]{{\bfseries 图~\ref{#1}}}
 	\newcommand\tabref[1]{{\bfseries 表~\ref{#1}}}
-  	\RequirePackage[authoryear]{gbt7714}
+	\RequirePackage{gbt7714}
 }{\relax}
 \ifdefstring{\ELEGANT@lang}{en}{
   \theoremstyle{plain}% default
diff --git a/kvoptions.pdf b/kvoptions.pdf
deleted file mode 100644
index 1313f05..0000000
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