At the end of the Heian period, with the development of government by a retired emperor, the abdicated emperor and cloistered emperor came to make important decisions after formulating agreements at their own residence, replacing the reign of the emperor at the Imperial Palace.
平安時代末期、院政の進展に伴って内裏における陣定に代わって、上皇や法皇が自分の御所内において議定を行って重要な決定を行うようになった。