Noun
an Asian river between China and Russia; flows into the Sea of Okhotsk
Source: WordNetRivers in northeastern Mongolia drain into the Pacific through the Argun and Amur (Heilong Jiang) rivers, while the few streams of southern and western Mongolia do not reach the sea but run into lakes or deserts. Source: Internet
It features three natural karst bridges: Tianlong Bridge, Qinglong Bridge and Heilong Bridge. Source: Internet