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Swans fly at sunrise of the New Year over the Rongcheng national swan nature reserve in Rongcheng City, east China's Shandong Province, Jan. 1, 2018. (Xinhua/Yang Zhili)
Swans fly at sunrise of the New Year over the Rongcheng national swan nature reserve in Rongcheng City, east China's Shandong Province, Jan. 1, 2018. (Xinhua/Yang Zhili)