
China's Sun Yang prepares for the men's 200m freestyle swimming event at the 17th FINA World Championships in Budapest, Hungary on July 25, 2017. (Xinhua/Ding Xu)

China's Sun Yang prepares for the men's 200m freestyle swimming event at the 17th FINA World Championships in Budapest, Hungary on July 25, 2017. (Xinhua/Ding Xu)