Jin dynasty administrative system

Timeline

1. c. 1130–1161North China · North ChinaAfter destroying Liao and Song, the Jin implemented the circuit-prefecture-county system in the Central Plains, with the Department of State Affairs overseeing governance and the Six Ministries handling personnel, revenue, rites, war, justice, and works, while retaining Jurchen meng'an-mouke military household organization for household registration and conscription.
2. 1161–1208Jin-ruled territories · ChinaEmperor Shizong of Jin reformed governance and unified penal codes; the parallel system of meng'an-mouke and prefectures/counties stabilized, the imperial examination was restored, and sinicized administration reached maturity, supporting a century of rule.
3. 1231–1234Jin territory south of the Yellow River · HenanIn the 1230s Mongol and Southern Song allied forces advanced southward, Jin territory shrank sharply, the circuit-prefecture-county system failed successively in Kaifeng, Caizhou, and elsewhere, central authority collapsed after Emperor Aizong's southward flight, and with the fall of Caizhou in 1234 the Jin administrative system ended.