Sun Yang celebrates after winning the men's 400m freestyle swimming final at FINA World Championships in Kazan, Russia, Aug. 2, 2015. Sun Yang claimed the title of the event in a time of 3 minutes and 42.58 seconds. (CNS photo/Houyu)
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Sun Yang celebrates after winning the men's 400m freestyle swimming final at FINA World Championships in Kazan, Russia, Aug. 2, 2015. Sun Yang claimed the title of the event in a time of 3 minutes and 42.58 seconds. (CNS photo/Houyu)
