《新唐书·列传·卷一百四十七》
一百家设一名总佐，一千家设一名治人官，一万家设一名都督。
百家有总佐一，千家有治人官一，万家有都督一。
For every hundred households, there is a Prefect; for every thousand households, there is a District Administrator; for every ten thousand households, there is a Governor