Lin Xintong of China competes during the Mixed 4X100 Freestyle Relay Final at the 2018 Summer Youth Olympic Games in Buenos Aires, capital of Argentina, Oct. 7, 2018. (Xinhua/Zhu Zheng)
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Lin Xintong of China competes during the Mixed 4X100 Freestyle Relay Final at the 2018 Summer Youth Olympic Games in Buenos Aires, capital of Argentina, Oct. 7, 2018. (Xinhua/Zhu Zheng)
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