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Gold medalist Xu Jiayu (R) of China celebrates after the men's 100m backstroke final at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 23, 2019. (Xinhua/Li Gang)
Gold medalist Xu Jiayu (R) of China celebrates after the men's 100m backstroke final at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 23, 2019. (Xinhua/Li Gang)