《汉书·传·贾邹枚路传》
所以，俗话说： 画地为牢，没有人敢上朝议政；刻木人为吏，必定无人敢对策 。
故俗语曰： 画地为狱，议不入；刻木为吏，期不对。 
Therefore, the common saying goes: If you mark out a boundary and imprison someone, no one will dare to come to court to discuss the government; if you carve a piece of wood to represent an official, you can be certain that no one will dare to make a counterproposal.