The Imperial court had attempted to introduce the ritsuryo system (a system of centralized government based on the ritsuryo code) across its sphere of influence but had not been successful in winning the approval by the people of southern Kyushu.
朝廷は自らの勢力範囲に広く律令制を導入することを試みていたが九州南部においては住民の支持を得られなかった。