The policy of rest and recuperation means that after the great turmoil or long-term war, the rulers do not consume people's money and impose heavy punishments on the people, but adopt a policy of lenient punishments and thin taxes to maintain the people's strength and multiply the population, so as to achieve the purpose of restoring and developing the economy and stabilizing the rule. After several generations of rulers (Hui Di, Lv Hou, Wendi and Jingdi), the policy of recuperation has been implemented for 60 or 70 years. The result is "all rivers run into the sea, and the national strength is considerable." During the reign of Emperor Gaozu Liu Bang, in order to share the interests with the people, in addition to demobilizing soldiers, letting those who fled in the war go home and releasing those who sold themselves into slavery as civilians, the following measures were taken: (1) Adjusting and establishing a new system. (2) suppress businesses. Businessmen are forbidden to be officials, wear silk fabrics, carry weapons and ride horses, and heavy taxes are imposed on businessmen. (3) Pro-Huns. (4) Eliminate the king with different surnames and enfeoffment the king with the same surnames. Like killing Han Xin and Peng Yue for treason. On the one hand, Emperor Gaozu adjusted the relations of production to meet the needs of the development of productive forces and consolidated the feudal economic foundation; On the other hand, a set of ruling system of the Western Han Dynasty was initially established, and the feudal superstructure established since Qin Dynasty was restored and perfected, which laid the foundation for the prosperity of the Western Han Dynasty.