Ph.D. graduates Gao Li (L) and Ji Kun (R) help their tutor Wen Lingying (C) wear her hat in the Fourth Military Medical University in Xi'an, northwest China's Shaanxi Province, July 5, 2013. Altogether 245 Ph.D. students and 575 postgraduate students graduated from the university this year. (Xinhua/Ding Haitao)