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Zhou Hong, a sanitary service worker, rides on a street at Aimin district in Mudanjiang City, northeast China's Heilongjiang Province, Jan. 23, 2018. The lowest temperature fell below minus 30 degrees Celsius in Mudanjiang on Tuesday. Zhou Hong, a monitor of a sanitary service team, got up at 3 a.m. as usual to start her work. To keep warm, Zhou wore two extra coats and three hats for she would work outside for more than 10 hours. (Xinhua/Zhang Chunxiang)
