
China's Xie Zhenye reacts before the men's 100 meters heat on Day One at the World Athletics Championships in London, Britain, on Aug. 4, 2017. (Xinhua/Wang Lili)

China's Xie Zhenye reacts before the men's 100 meters heat on Day One at the World Athletics Championships in London, Britain, on Aug. 4, 2017. (Xinhua/Wang Lili)