China's Xie Zhenye, Su Bingtian, Zhang Peimeng and Mo Youxue celebrate after 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. China ranked 2nd after the United States was disqualified. (Xinhua/Wang Lili)
