During the process of the development of the shoen system and the demise of Kochi-komin sei (the system of complete state ownership of land and citizens), the shoen owners, by utilizing their political influence, endeavored to secure the cultivators as residents of their own shoen by entitling them to the exemptions of the public duties or the temporary odd-job duties; such a process is known as the establishment of myo taisei (local tax management system based on rice land).
荘園制の発達と公地公民制の解体の過程で荘園領主は自己の政治力を背景として国役や臨時雑役などを免除させることで寄作者を自己の荘園内に移住させて荘園内に取り込もうとした（名体制の成立）。