(190329) -- DOHA, March 29, 2019 (Xinhua) -- China's Liang Jingkun serves during the men's singles first round match against South Korea's Jeoung Youngsik at 2019 ITTF Qatar Open in Doha on March 28, 2019. Liang Jingkun won 4-2. (Xinhua/Nikku)