
Xie Wenjun (2nd R) of China competes during Men's 110m Hurdles Semifinal on Day 3 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 6, 2017. (Xinhua/Wang Lili)

Xie Wenjun (2nd R) of China competes during Men's 110m Hurdles Semifinal on Day 3 of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 6, 2017. (Xinhua/Wang Lili)