(From L to R)China's Mo Youxue, Xie Zhenye, Su Bingtian and Zhang Peimeng pose after setting a new Asian record after the heats of the men's 4x100m relay at the 2015 IAAF World Championships at the "Bird's Nest" National Stadium in Beijing, capital of China, Aug. 29, 2015. (Xinhua/Li Gang)
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