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Um Cheonho (front) of South Korea reacts after the men's mass start race at the ISU Four Continents Speed Skating Championships in Milwaukee, the United States, Feb. 1, 2020. (Xinhua/Li Ying)
Um Cheonho (front) of South Korea reacts after the men's mass start race at the ISU Four Continents Speed Skating Championships in Milwaukee, the United States, Feb. 1, 2020. (Xinhua/Li Ying)