Zhanhe
The Zhan River descends from the forested hills of the Lesser Khingan into the Sun Bira, a tributary of the Amur. Its valley forms part of a network of rivers flowing north and east through mountain country. Oroqen communities lived across these forests, where hunting and knowledge of the waterways shaped travel and subsistence. The Zhan's waters join the Sun before reaching the broad Amur, linking a smaller wooded valley to the great river of the northeast.