Games played by Yifeng Zhang (Shanghai, China) in this fuseki

3
524
1
5bw
+2 
= 1
- 2
?  

1Zhang Yifeng - Gu Wei
2Xue Chengcheng - Zhang Yifeng
3Ni Zhongxing - Zhang Yifeng
4Lu Hai - Zhang Yifeng
5Zhang Yifeng - Ge Lingfeng