A father looks at his newborn baby outside a delivery room at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, April 8, 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)

Obstetrician Liu Xiaojun (R, front) and Zhang Xiaohui (L, front) talk over conditions of several older parturient women at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, March 10, 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)

Obstetrician Zhang Xiaohui (C, front) helps a pregant woman be admitted at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, March 15, 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)

Obstetrician Ye Wei (1st L) checks an older parturient woman at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, April 23, 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)

Midwife Kuang Ling (R) helps a lying-in woman deliver a baby at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, April 8, 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)

Obstetrician Cheng Guilin (2nd L) inspects a pregnant woman 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)

Obstetrician Ye Wei (front) seizes time to have a breakfast at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, April 23, 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)

Obstetrician Zhang Xiaohui prepares to carry out caesarean operation for a lying-in woman at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, March 15, 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)

Obstetrician Zhang Xiaohui (2nd R) carries out caesarean operation for a lying-in woman at the 1st Affiliated Hospital of Anhui Medical University in Hefei, capital of east China's Anhui Province, March 15, 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)

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) 10