On December the 29th, a group of us took pictures and had dinner together farewelling Cheng Xianghui (程相会) and Zhang Zheng’en (张正恩) ,  who have successfully completed their PhD studies in the group and become of new ‘Doctors’.  With their PhD gowns on, the two beautiful ladies took pictures with boys and girls in the group. We had a ‘big’ dinner followed by Kara-OK in a hidden restaurant. Memorable time and memorable moments. We wish them all the best in future life.