《史记·七十列传·刘敬叔孙通列传》
汉高帝五年，天下已经统一，诸侯们在定陶共同尊推汉王为皇帝，叔孙通负责拟定仪式礼节。
汉五年，已并天下，诸侯共尊汉王为皇帝於定陶，叔孙通就其仪号。
In the fifth year of Emperor Gaozu of Han, the world was unified, and princes gathered in Dingtao to acclaim the King of Han emperor, with Shusun Tong responsible for designing the ceremony.