China's Sun Yang reacts after the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang competes in the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang competes in the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang competes in the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang reacts before the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang competes in the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)

China's Sun Yang warm up before the heats of the men's 1500-meter freestyle swimming event in the FINA World Championships at Palau Sant Jordi in Barcelona on August 3, 2013. Sun Yang advanced to the final with 14:54.65.(Xinhua/) (Guo Yong)