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Oliver Widmer (C) of Switzerland competes during the men's match at the International Curling Elite 2019 against South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 8, 2019. (Xinhua/Zhang Long)

Oliver Widmer (C) of Switzerland competes during the men's match at the International Curling Elite 2019 against South Korea in Xining, capital of northwest China's Qinghai Province, Dec. 8, 2019. (Xinhua/Zhang Long)