diff --git a/document.tex b/document.tex
index 3889fb1..0e87f7b 100644
--- a/document.tex
+++ b/document.tex
@@ -90,6 +90,7 @@ Acyclicity, 2048 game, ergodicity, backward learning.
 \input{main/2048isAcyclic}
 \input{main/discussion}
 
+
 %\input{main/nonergodicity}
 %\input{main/paradox}
 %\input{main/theorem}
@@ -99,7 +100,7 @@ Acyclicity, 2048 game, ergodicity, backward learning.
 
 \bibliographystyle{IEEEtran}
 \bibliography{template/IEEEabrv,references}
-
+\input{main/biography}
 \end{document}
 
 
diff --git a/main/biography.tex b/main/biography.tex
new file mode 100644
index 0000000..0f6dabe
--- /dev/null
+++ b/main/biography.tex
@@ -0,0 +1,45 @@
+\vspace{11pt}
+
+\vspace{-33pt}
+\begin{IEEEbiography}[{\includegraphics[width=1in,height=1.25in,clip,keepaspectratio]{pic/chenxg}}]{Xingguo Chen}
+ is a lecturer in the School of Computer Science 
+  at Nanjing University of Posts and Telecommunications. He received
+the Ph.D degree from Nanjing University, Nanjing,
+China, in 2013. 
+His research interests include reinforcement learning, 
+Game AI, and machine learning.
+\end{IEEEbiography}
+
+\vspace{11pt}
+
+\vspace{-33pt}
+\begin{IEEEbiography}[{\includegraphics[width=1in,height=1.25in,clip,keepaspectratio]{pic/lixw}}]{Xinwen Li}
+is a graduate student from the School of Computer Science at Nanjing University of Posts and
+ Telecommunications, and his research interest lies in game AI.
+\end{IEEEbiography}
+
+\vspace{11pt}
+
+\vspace{-33pt}
+\begin{IEEEbiography}[{\includegraphics[width=1in,height=1.25in,clip,keepaspectratio]{pic/yangsd}}]{Shangdong Yang}
+is a lecturer in the School of Computer Science
+  at Nanjing University of Posts and Telecommunications. He received
+the Ph.D degree from Nanjing University, Nanjing,
+China, in 2020. 
+His research interests include reinforcement learning, and
+Game AI.
+\end{IEEEbiography}
+
+\vspace{11pt}
+
+\vspace{-33pt}
+\begin{IEEEbiography}[{\includegraphics[width=1in,height=1.25in,clip,keepaspectratio]{pic/wangwh}}]{Wenhao Wang}
+is a lecturer in the College of
+Electronic Engineering at National University of
+Defense Technology. He received the Ph.D degree
+in Military Science from National University of
+Defense Technology, Hunan, China, in 2023. 
+His interested research directions include network security,
+penetration testing, game theory and reinforcement
+learning.
+\end{IEEEbiography}
\ No newline at end of file
diff --git a/pic/chenxg.jpg b/pic/chenxg.jpg
new file mode 100644
index 0000000..84b2bbf
Binary files /dev/null and b/pic/chenxg.jpg differ
diff --git a/pic/lixw.png b/pic/lixw.png
new file mode 100644
index 0000000..b08cfce
Binary files /dev/null and b/pic/lixw.png differ
diff --git a/pic/yangsd.jpg b/pic/yangsd.jpg
new file mode 100644
index 0000000..6c44cae
Binary files /dev/null and b/pic/yangsd.jpg differ