The siege of Kuju (Korean: 귀주성전투) which occurred in 1231 was a decisive Goryeo victory against the Mongol Empire during the First Mongol Invasion of Korea. After the Mongol army crossed the Yalu river, it quickly captured almost all of Goryeo's border defenses. The Mongol army, however, ran into stiff resistance both at Anju and the city of Kuju, commanded by General Park Seo.

The Battle of Cheoin was a battle between Goryeo militants and forces of the Mongol Empire in Cheoin-bugok, Suju, Yanggwang-do on December 16, 1232. Despite being outnumbered, civilian forces of the fortress managed to hold off the Mongol advance. Following the death of the Mongolian general Saritai, the invading force withdrew, effectively ending the second Mongol invasion of Korea.