China's Zhang Peimeng sprints during the men's 4x100m relay final at the 2015 IAAF World Championships at the "Bird's Nest" National Stadium in Beijing, capital of China, Aug. 29, 2015.(Xinhua/Yue Yuewei)
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China's Zhang Peimeng sprints during the men's 4x100m relay final at the 2015 IAAF World Championships at the "Bird's Nest" National Stadium in Beijing, capital of China, Aug. 29, 2015.(Xinhua/Yue Yuewei)
