Wang Chuqin (L)/Sun Yingsha of China compete during the mix doubles final match against Jang Woojin of South Korea and Cha Hyo Sim of the Democratic People's Republic of Korea (DPRK) at 2018 ITTF World Tour Korea Open in Daejeon, South Korea, July 21, 2018. Jang Woojin/Cha Hyo Sim won 3-1 and claimed the title. (Xinhua/Wang Jingqiang)