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Huang Yaqiong (L) /Zheng Siwei of China compete during the semifinal match between Huang Yaqiong/Zheng Siwei of China and Seo Seung Jae/Chae Yujung of South Korea at the Korea Open 2019 badminton tournament in Incheon, South Korea, on Sept. 28, 2019. (Photo by Lee Sangho/Xinhua)