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China's Xu Jiayu competes during the men's 100m backstroke final at the FINA Swimming World Cup in Tokyo, Japan, Nov.11, 2018. (Xinhua/Du Xiaoyi)
China's Xu Jiayu competes during the men's 100m backstroke final at the FINA Swimming World Cup in Tokyo, Japan, Nov.11, 2018. (Xinhua/Du Xiaoyi)