Official department, in charge of the appointment, removal, inspection, promotion and transfer of state officials; The Ministry of Housing and Urban-Rural Development is in charge of land, household registration, taxation and fiscal revenue and expenditure. Ritual department, in charge of national laws and regulations, worship schools, imperial examinations, reception of foreign guests and other affairs; The Ministry of War is in charge of the selection of military commanders, military registration, ordnance and military orders. Department of punishment, responsible for legal and prison affairs; The Ministry of Industry is in charge of Shanze, reclamation, craftsmen, water conservancy, transportation, various projects and so on! Combine their functions, remember! If you can't remember which one it is, think about which one the country lacks.