People take photos of swans at sunrise in Rongcheng national swan nature reserve in Rongcheng City, east China's Shandong Province, Dec. 17, 2016. (Xinhua/Wang Fudong)
People take photos of swans at sunrise in Rongcheng national swan nature reserve in Rongcheng City, east China's Shandong Province, Dec. 17, 2016. (Xinhua/Wang Fudong)