Cika wannan jumla:
Mamayewar Mongol na Koriya, tsakanin 1250s da 1270s, Mongols sun haɗu da lardunan arewacin Koriya kuma sun haɗa su cikin daularsu a matsayin Ssangseong (쌍성총관부, 雙城總管府) da Dongnyeong Prefectures (동녕부, 東寧府). A shekara ta 1356, sojojin Goryeo sun sake kwace wadannan larduna a wani bangare saboda gudun hijira na Yi Ja-chun, karamin jami'in Koriya da ke hidimar 'yan Mongol a Ssangseong, da dansa, Yi Seong-gye. Bugu da kari, Janar Yi Seong-gye da Ji Yongsu sun jagoranci yakin neman shiga Liaoyang.