Olongki
Olongki is an old name for the Niman, a river flowing from the Ezop Range into the Bureya. Its forested basin receives many mountain streams, among them the Akishma. After the Treaty of Nerchinsk in 1689, Qing surveyors travelled up the Bureya towards the mouth of the Olongki and the northern ranges as part of a wider examination of the frontier. Their records preserve the river's older name alongside those of neighbouring waterways.