Around the tenth century, the Imperial Court abandoned the system of ruling over people which had originated in the Ritsuryo system (a system of centralized government based on the ritsuryo code) and moved to a system based of taxation of land (the system of the dynasty state).
10世紀ごろ、朝廷は律令制に由来する人別支配体制を放棄し、土地課税に基礎をおく支配体制（王朝国家体制）へとシフトした。