Combo photo shows (up) Kuang Weiping, a neurosurgeon with more than 20 years of experience, practicing peeling raw egg at his office on Dec. 14, 2016 and (down) Kuang (L) performing operation on a patient in the Brain Hospital of Hunan Province in Changcha, central China's Hunan Province, on Dec. 20, 2016. Kuang contrived some unique training methods on surgical skills, such as peeling the shell of raw eggs to improve concentration or practicing surgical suture on houseplant. Those ways have been learned and referenced by more and more young surgeons. (Xinhua/Li Ga)