The study of central government organization, military systems, shoen policy, and local tax management systems during the Dynastic polity period has marked significant progress and another theory concerning the transition from the ancient times to the medieval age was proposed in lieu of the theory of Dynastic polity.
王朝国家体制期における中央政治機構や軍制・荘園政策・負名体制に関する研究は著しい進展を見せ、さらには王朝国家に代わる新たな古代-中世移行論が唱えられ始めてはいる。