
Liu Shiwen of China returns the ball during the women's singles quarterfinal match against her compatriot Mu Zi at the 2017 World Table Tennis Championships in Dusseldorf, Germany, on June 2, 2017. Liu Shiwen won 4-1. (Xinhua/Tao Xiyi)

Liu Shiwen of China returns the ball during the women's singles quarterfinal match against her compatriot Mu Zi at the 2017 World Table Tennis Championships in Dusseldorf, Germany, on June 2, 2017. Liu Shiwen won 4-1. (Xinhua/Tao Xiyi)