2. Guo Jiejing, Guo Haoxin, Guo Zhiyou, Guo Xinkuang, Guo Yujun, Guo Dingming, Guo Wenliang, Guo Yantao, Guo Qingyun, Guo Yizhuang, Guo Jingsheng, Guo Bogan, Guo Haoqiang and so on.