As a result of my consideration of the changes about architectual control on the vassals' residences, and interpretation of architectual control's "Ooseidasare-joujou"in the Hagi Clan , the following points were obtained:
1 "Ooseidasare-joujou" was not only the unity of the past rules, but also the reform in line with reality.
2 Because the past rules didn't come up concrete inconsistent, in "Ooseidasare-joujou" they remind the past rule again and again.
