Consolidation of the Choe Military Regime in Goryeo

Timeline

1. 1224Gaeseong · GaeseongAfter succeeding his father in power in 1219, Choe Ui, under the pretext of anti-corruption, successively dismissed Geum Ui, Jeong Bang-bu, Mun Yeol-bi, and other core aides from Choe Chungheon's era; by around 1224 the old guard had essentially been purged, and personnel and decision-making power in the regime were further concentrated in the Choe private residence.
2. 1224Northern frontier of the Korean Peninsula · northern frontierFacing northern pressures from the Mongols and Dongzhen, Choe Ui continued building fortresses such as Uiju, Hwaju, and Cheolgwan, and expanded the Dobang private troops and Byeolcho armed forces, using Choe family troops in place of the royal regular army for core defense duties, substantially consolidating the military regime along the frontier.
3. 1224–1225Choe Ui's residence (Gaeseong) · GaeseongChoe Ui continued his father's practice, handling the appointment and promotion of civil and military officials at his private residence and requiring officials to submit policy memoranda for approval; this laid the groundwork for the formal establishment of the Jeongbang the following year, marking the Choe regime's shift from seizure of power by force to institutionalized dictatorship.