The Songhua River (Chinese: 松花江; pinyin: Sōnghuā Jiāng) or Sungari River (Manchu: , Sunggari Ula) is a river in Northeast China, and is the largest tributary of the Heilong River (Amur), flowing about 1,434 kilometres (891 mi) from Changbai Mountains through Jilin and Heilongjiang provinces.