After Emperor Gaozu Liu Bang acceded to the throne, he adopted the advice of his uncle Sun Tong, restored etiquette, set up three public offices and nine public offices, appointed Xiao He as the prime minister, and implemented the policy of sharing interest with the people and resting quietly.

Encourage production and ignore taxes. Politically, the heroes Han Xin, Chen Yi, Ying Bu were first made king. When the regime was stable, in order to prevent rebellion and consolidate the stability of imperial power, their aristocratic status was cancelled, or they were demoted or executed, and Liu's clan was changed to be king, and the oath that "Liu is not king, the world will be * * *" was made.

At this time, due to years of turmoil and weak national strength, when Liu Bang attacked Xiongnu, he was besieged by Xiongnu in Deng Bai, that is, the siege of Deng Bai. Since then, the Han dynasty adopted a pro-marriage policy and exchanged marriage and treasure for the peace of the empire. So there was no war in the early Han dynasty, and the people were able to recuperate.