On May 31 2021, Jiaqi, Buqing and Hongxing did their PhD viva, successfully.  Included in the assessment panel are Professors Chen Yingjun, Chen Duohong, Hu Weiwei, Zhang Yanlin and Ding Xiang. We had a little bit of alcohol (Xiaoguwei-小谷围-which is the favorite of Li Jun) after the event. Congratulations!