
Xu Jiayu of Zhejiang gestures after the men's 100m backstroke swimming heat at 13th Chinese National Games in north China's Tianjin Municipality, Sept 1, 2017. Xu Jiayu advanced to the semi-final. (Xinhua/Ju Huanzong)

Xu Jiayu of Zhejiang gestures after the men's 100m backstroke swimming heat at 13th Chinese National Games in north China's Tianjin Municipality, Sept 1, 2017. Xu Jiayu advanced to the semi-final. (Xinhua/Ju Huanzong)