Although the policies to return back to the principles of the Ritsuryo system were implemented again from the late ninth century to the early tenth century (during the peaceful era of Kanpyo and the peaceful era of Engi), such policies eventually ended in failure.
9世紀末期～10世紀初頭（寛平の治・延喜の治期）には再び律令制の原則へ回帰する政策が採られたものの、結局それは失敗に終わった。