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A flock of swans swim in Swan Lake Nature Reserve in Rongcheng, east China's Shandong Province, on Jan. 4, 2010. The lake, an ideal winter habitat for swans, attracted an increasing number of migrants from Siberia and Mongolia to spend winter days as the environment improved in recent years. Now the Swan Lake has been one of the four great winter habitats for swans in the world and is honored as the "Swan Kingdom in the East". (Xinhua/Li Ziheng) Photo Gallery>>> |