Li Yunqi of China competes during Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Li Yunqi advanced to the semifinal with 1:48.18.(Xinhua/Wang Lili)

Ryan Lochte of the United States prepares for Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Ryan Lochte advanced to the semifinal with 1:47.90. (Xinhua/Wang Lili)

Xu Jiayu of China competes during Men's 100m Backstroke Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Xu Jiayu advanced to the semifinal with 53.63 seconds.(Xinhua/Wang Lili)

Ryan Lochte (L) of the United States looks at the screen after Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Ryan Lochte advanced to the semifinal with 1:47.90. (Xinhua/Wang Lili)

Ryan Lochte (R) of the United States looks at the screen after Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Ryan Lochte advanced to the semifinal with 1:47.90. (Xinhua/Wang Lili)

Li Yunqi of China reacts after Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Li Yunqi advanced to the semifinal with 1:48.18.(Xinhua/Wang Lili)

Wang Shun of China competes during the Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Wang Shun advanced to the semifinal with 1:48.19.(Xinhua/Wang Lili)

Ryan Lochte of the United States competes during Men's 200m Freestyle Heats of the Swimming competition on day 10 of the 15th FINA World Championships at Palau Sant Jordi in Barcelona, Spain on July 29, 2013. Ryan Lochte advanced to the semifinal with 1:47.90. (Xinhua/Wang Lili)