The peasant uprising at the end of Qin Dynasty and the Chu-Han War, which lasted for four years, made the general public tired of war. If Liu Bang, the leader of the Han Dynasty, wants to wage war at this time, it will definitely lead to political instability. Therefore, it is necessary to recuperate first, restore the economy, and prepare for attacking the Huns and other ethnic minorities in the future.

Objective reasons: Long-term war leads to economic depression and national poverty.

Subjective reasons: the rulers learned the lessons of Qin's death in order to maintain long-term stability.

1. Economically, the long-term war economy was destroyed.

2. Politically, learn from the lessons of Qin's death and consolidate the rule.

3. Ideologically influenced by the Taoist thought of governing by doing nothing.