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
Photo taken with an UAV drone shows participants walk on the ice-covered trekking route during an ice trekking event in Panjin, northeast China's Liaoning Province, on Jan. 26, 2019. (Xinhua/Pan Yulong)
Photo taken with an UAV drone shows participants walk on the ice-covered trekking route during an ice trekking event in Panjin, northeast China's Liaoning Province, on Jan. 26, 2019. (Xinhua/Pan Yulong)