Then, in the early part of tenth century, the Imperial Court executed a national governmental systems reform that transferred the greatest authority over administration to Kokushi (This system established by this reform was called the system of the dynasty state).
10世紀前期、朝廷は統治権限を大幅に国司へ移譲する国制改革を行った（これにより成立した体制を王朝国家体制という）。