《管子·立政》
又当全体官吏会集在朝之日，五乡乡师和五属大夫都要在国君面前学习法令。
大朝之日，五乡之师，五属大夫，皆身习宪于君前。
When all the officials are gathered in the court, the township teachers and the big men of the Five Clans will study the law in front of the monarch.