(190329) -- DOHA, March 29, 2019 (Xinhua) -- China's Xu Xin (L)/Liu Shiwen compete during the mixed doubles quarterfinal match against South Korea's Lee Sangsu/Jeon Jihee at 2019 ITTF Qatar Open in Doha on March 28, 2019. Xu Xin /Liu Shiwen won 3-1. (Xinhua/Nikku)