Mudan Ula

Mudan Ula is the winding river that runs north through the mountains of eastern Manchuria to join the Songhua. It was known by several names in earlier times, among them Huli-gai and Hurka. The river linked the old country of Balhae around Lake Jingpo with Jurchen settlements farther downstream. Its waters passed Ningguta, a Qing garrison centre, before reaching the Songhua near Sanxing, another important post in the administration of the northeastern frontier.