The Imperial Court made efforts to introduce a system of centralized government based on the ritsuryo codes by reforming the system of clans and hereditary titles, enforcing the ownership of all lands and serfs by the emperor, and introducing a uniform tax system (taxes in kind or service).
朝廷はそれまでの氏姓制度を改め、公地公民制や統一的税制（租庸調制など）を施行し、地方行政機構を改組して中央集権化するなど、律令制の導入を図った。