Уссури
Ussuri River is the largest tributary of Amur River(Heilong River) on its right and an important boundary river between China and Russia. The length of Ussuri River is , with a drainage area of . The river goes through the valley between the Wanda Mountains in China and the Sichote-Alin in Russia. Its beauty and natural landscapes are incomparable in China and it is among the few unpolluted rivers in China.