Swans are seen in the Yellow River wetland in Guide County, northwest China's Qinghai Province, Dec. 12, 2019. Hundreds of migratory swans flied to Guide for wintering. (Xinhua/Zhang Long)
Migratory swans fly to Guide of NW China's Qinghai for wintering
Source: Xinhua| 2019-12-13 15:33:30|Editor: ZX
