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Photo taken on Jan. 6, 2018 shows the sea ice in Dalian, northeast China's Liaoning Province. Sea ice was formed here due to the continuous low temperature. (Xinhua/Lyv Wenzheng)

Photo taken on Jan. 6, 2018 shows the sea ice in Dalian, northeast China's Liaoning Province. Sea ice was formed here due to the continuous low temperature. (Xinhua/Lyv Wenzheng)