With their political power as a background, it gradually became a custom that powerful nobles appointed their relatives or dependents to zuryo of specific provinces, and they acquired, as their revenues, the salary and tax gained by the zuryo they sent to the provinces.
その政治権力を背景として、有力貴族らが縁者や係累を特定の国の受領に任命することが徐々に慣例化していき、現地へ赴任した受領の俸料・得分を自らの経済的収益としたのである。