Obstetric intern Li Pengcheng takes a nap during a break at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, June 29, 2016. Since January 1 this year, China has allowed all married couples to have two children, which has ended the "one child" policy since it was implemented in the late 1970s. As more babies are to be given birth, obstetrical departments have become one of the busiest sectors in hospitals. (Xinhua/Guo Chen)