At that time, Manor Regulation Acts were often ordered by a 'new government' upon the change of the emperors, and also in many cases, kokuga did not authorize the ownership of shoen and incorporated them into Kokugaryo (territories governed by provincial government office).
当時、天皇の代替わりの際に「新政」として荘園整理令が出されたり、また、国衙が荘園を認めずに国衙領へ編入しようとすることが多かった。