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Su Bingtian of Team China reacts after the Men's 4X100 Meters Relay heat at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 4, 2019. (Xinhua/Wang Jingqiang)
Su Bingtian of Team China reacts after the Men's 4X100 Meters Relay heat at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 4, 2019. (Xinhua/Wang Jingqiang)