《晋书·志·第四章》
当时百姓经历了秦王朝统治和楚、坠之争，人口数量衰减，大封国不过一万家，小的仅五六百户，于是汉朝尊崇王室子弟，广泛开拓了九国。
于时民罹秦项，户口凋弊，大侯不过万家，小者五六百户，而尊王子弟，大启九国。
At that time, the population had declined after the rule of the Qin dynasty and the conflict between Chu and Han, with large fiefdoms numbering only ten thousand households and small ones having only five to six hundred households. Therefore, the Han dynasty promoted descendants of the royal family and widely established nine kingdoms.