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Xu Jiayu (Bottom) of China warms up before the swimming event at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 25, 2019. (Xinhua/Tao Xiyi)
Xu Jiayu (Bottom) of China warms up before the swimming event at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 25, 2019. (Xinhua/Tao Xiyi)