South Korea，澳门永利网址 澳门永利线上娱乐， South Korea，澳门永利线上娱乐， Sun Yang of China reacts after the men's 400m freestyle final at the Gwangju 2019 FINA World Championships in Gwangju， 2019. (Xinhua/Tao Xiyi) GWANGJU， July 21 (Xinhua) -- China's Olympic champion Sun Yang won his fourth consecutive world title in the men's 400m freestyle at the 18th World Championships here on Sunday. Sun finished first in the 400m free final， clocking three minutes and 42.44 seconds. It was his fourth straight gold medal of the FINA worlds in the event since 2013. Mack Horton of Australia touched home as runner-up in 3:43.17. Italy's Gabriele Detti trailed with a time of 3:43.23 for the bronze. ， July 21，澳门永利网址，澳门永利线上注册，。