Aidan

Aidan denotes a Jurchen clan group settled around present-day Yanji in the Buerhatong and Hailan river valleys, a region the Jin ruled through its Halan route and the Yuan through the Kaiyuan circuit of Liaoyang province. In 1337 it was a small tribal polity under Yuan overlordship, and the Ming later placed the area under its Buerhatu Guard within the Nurgan Regional Military Commission.