
Xu Xin(R) of China competes during the men's singles match against his compatriot Lin Gaoyuan at the 2017 World Table Tennis Championships in Dusseldorf, Germany, June 4, 2017. (Xinhua/Luo Huanhuan)

Xu Xin(R) of China competes during the men's singles match against his compatriot Lin Gaoyuan at the 2017 World Table Tennis Championships in Dusseldorf, Germany, June 4, 2017. (Xinhua/Luo Huanhuan)