Halan
Halan was a Jurchen region of the Hailan River and the Tumen frontier. Halan Prefecture lay farther south near Hamhung; in 1337 its Jurchen and Goryeo inhabitants came under the Yuan province of Liaoyang.
In 1356 Goryeo attacked the Yuan frontier administrations and took the southern area. The Ming established the Halancheng Guard on the Hailan in 1407, tying Jurchen chiefs to the court through titles and tribute. Farther north, Yanji belonged to the Ming Buerhatu Guard; in 1714 the Qing established a Hunchun commandancy.