In the Heian period, when the nation governed based on the principles of the ritsuryo legal code started to fall apart, legal systems based on tokyo-ken such as soniryo became unsubstantial and Jiin-ho grounded in chikyo-ken became the mainstream.
平安時代に入って律令国家が解体していくと、僧尼令など統教権に基づく法制が有名無実化していき、もっぱら治教権に基づく寺院法が中心となっていく。