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Su Bingtian (3rd R) of China competes in the men's 60 metres heats during the IAAF World Indoor Championships at Arena Birmingham in Birmingham, Britain, on March 3, 2018. (Xinhua/Han Yan)

Su Bingtian (3rd R) of China competes in the men's 60 metres heats during the IAAF World Indoor Championships at Arena Birmingham in Birmingham, Britain, on March 3, 2018. (Xinhua/Han Yan)