
Xie Wenjun (2nd R) of China competes during the men's 110m hurdles semi-final on Day 3 at the IAAF World Championships 2017 in London, Britain on Aug. 5, 2017. (Xinhua/Han Yan)

Xie Wenjun (2nd R) of China competes during the men's 110m hurdles semi-final on Day 3 at the IAAF World Championships 2017 in London, Britain on Aug. 5, 2017. (Xinhua/Han Yan)