《魏书·列传·卷四十八》
朝廷应广兴交通，兴修水利，应使官府各部门区别清楚，四方百姓异地而居，立下永垂百世不改的范式，那么就是天下人的大幸了。
端广衢路，通利沟渠，使寺署有别，四民异居，永垂百世不刊之范，则天下幸甚矣。
The imperial court should widely promote transportation and build water conservancy projects, and should enable the various departments of the government to distinguish clearly, and people from all quarters to live in different places, and establish a model that will last forever. Then it will be a great fortune for the world.