The chaos in the world has just stopped and people have lost their lives. In view of the experience before the Qin dynasty, rest can settle the world. Obviously, there are many imperfections at the beginning of the major policy. Therefore, the skill of Huang Lao is conducive to social and economic development, to the increase of a large number of people lost due to war, and to the consolidation of the emerging Han regime. Disadvantages: centralization is not centralized enough, which is the premise of the Seven Kings Rebellion. It is also easy to form local giants, the legal system is chaotic, and the national prestige is lacking. Moreover, there are faults in Confucian culture, important classics are lost, the military in the early Han Dynasty is weak, and then the Xiongnu rebellion!