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People enjoy themselves at the 21st Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Xinhua/Xie Jianfei)
People enjoy themselves at the 21st Ice-Snow World in Harbin, capital of northeast China's Heilongjiang Province, Dec. 23, 2019. (Xinhua/Xie Jianfei)