Children play at a skating rink during the first day of winter vacation at the children's park in Changchun, capital of northeast China's Jilin Province, Jan. 6, 2018. (Xinhua/Lin Hong)
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Children play at a skating rink during the first day of winter vacation at the children's park in Changchun, capital of northeast China's Jilin Province, Jan. 6, 2018. (Xinhua/Lin Hong)
