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Swans fly under the moon in the sky above Xuyi County of Huai'an City, east China's Jiangsu Province, in the early morning on Jan. 9, 2017. (Xinhua/Zhou Haijun)
Swans fly under the moon in the sky above Xuyi County of Huai'an City, east China's Jiangsu Province, in the early morning on Jan. 9, 2017. (Xinhua/Zhou Haijun)