Ning Zetao advances to semi-final at National Games (8/8)

Ning Zetao of Henan greets the audience after the men's 100m freestyle swimming heat at 13th Chinese National Games in north China's Tianjin Municipality, Sept. 3, 2017. Ning Zetao advanced to the semi-final with 49.44 seconds. (Xinhua/Ding Xu)