
Park Tae Hwan of South Korea competes during the men's 400m freestyle final of Swimming at the 17th FINA Aquatics World Championships in Budapest, Hungary on July 23, 2017. Park Tae Hwan took the fourth place with 3:44.38. (Xinhua/Ding Xu)

Park Tae Hwan of South Korea competes during the men's 400m freestyle final of Swimming at the 17th FINA Aquatics World Championships in Budapest, Hungary on July 23, 2017. Park Tae Hwan took the fourth place with 3:44.38. (Xinhua/Ding Xu)