China's Su Bingtian prepares to compete during a men's 100m round 1 heat of Athletics at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Wang Lili)
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China's Su Bingtian prepares to compete during a men's 100m round 1 heat of Athletics at the 2016 Rio Olympic Games in Rio de Janeiro, Brazil, on Aug. 13, 2016. (Xinhua/Wang Lili)
