On Nov the 11th, Yi Xin  (怡欣) and Li Tingting (李婷婷）had their PhD viva smoothly as planed. Both of them prepared for the event carefully and performed greatly. The assessment panel included professors Chen Yingjun (Fudan-U), Bao Rui (OUC), Tian Chongguo (YIC), Chen Duohong (GDEMC), and, alternatively, Jun Li and Gan Zhang.  We had a cerebration dinner together afterwards. Congratulations, Drs Yi and Li !