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Zeng Jianhang (R) of China competes during the men's 110m hurdles heat at the 2019 IAAF World Championships in Doha, Qatar, Sept. 30, 2019. (Xinhua/Li Ming)
Zeng Jianhang (R) of China competes during the men's 110m hurdles heat at the 2019 IAAF World Championships in Doha, Qatar, Sept. 30, 2019. (Xinhua/Li Ming)