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Tourists pose for a photo at Saint Sophia Cathedral in Harbin, capital of northeast China's Heilongjiang Province, Jan. 8, 2018. The city greeted the first snowfall this winter on Monday. (Xinhua/Wang Kai)

Tourists pose for a photo at Saint Sophia Cathedral in Harbin, capital of northeast China's Heilongjiang Province, Jan. 8, 2018. The city greeted the first snowfall this winter on Monday. (Xinhua/Wang Kai)