
Su Bingtian (L) of China reacts ahead of Men's 100m Heats of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 4, 2017. Su adavanced to the semifinal with 10.03 seconds. (Xinhua/Wang Lili)

Su Bingtian (L) of China reacts ahead of Men's 100m Heats of the 2017 IAAF World Championships at London Stadium in London, Britain, on Aug. 4, 2017. Su adavanced to the semifinal with 10.03 seconds. (Xinhua/Wang Lili)