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Sun Yang of China walks past Australia's Mack Horton after the men's 800m freestyle preliminary at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 23, 2019. (Xinhua/Tao Xiyi)
Sun Yang of China walks past Australia's Mack Horton after the men's 800m freestyle preliminary at the Gwangju 2019 FINA World Championships in Gwangju, South Korea, July 23, 2019. (Xinhua/Tao Xiyi)