It's in this history book.
Politically: eradicate the king with different surnames
Financially: Be careful of punishment.
In the Chu-Han War, in order to win, Liu Bang won the morale of the army and enfeoffed the Seven Chivalrous Men. Because he is not Liu, he changed his surname to Wang. After the establishment of the Western Han Dynasty, Wang Yongbing, a different surname, was self-respecting, autocratic, opposed to the central authorities and even attempted rebellion. So Liu Bang made an oath that "Liu shall not be king" and made a decision that "Liu must be king and the world is ruled by * * *". Eliminate the king with different surnames and stabilize the situation in the border areas. Economically, his policy of attaching importance to agriculture and restraining business included: a large number of soldiers returned to their hometowns and returned to their old fields, Shu Ren exempted from selling handmaiden, restrained business, and reduced land rent by fifteen taxes. The small print that guides students to read further shows that the recuperation policy in the early years of the Western Han Dynasty lightened the burden on farmers, and it is not difficult to introduce the functions of the recuperation policy: it increased the agricultural labor force, mobilized the enthusiasm of farmers, and promoted the economic recovery and development in the early years of the Western Han Dynasty. (Underlined part of blackboard writing)
Since Liu Bang, the emperor gaozu of Han Dynasty, Emperor Hui of Han Dynasty and Emperor Jing of Han Dynasty have maintained stable policies, continued to implement the policy of recuperation, and recovered their social economy. The first situation that China feudal society managed the world was "the rule of culture and scenery".