FUJIWARA no Fuyutsugu who became the chief of Daijokan after Sonohito changed the principle of the Ritsuryo system greatly and implemented the easing of regulations of development by influential families.
園人の次に太政官首班となった藤原冬嗣は律令支配路線を大きく転換し、権門による開発の規制緩和を実施していった。