On the basis of summarizing predecessors' experience, Classic of Law pioneered China's legal system from the aspects of legislative spirit, code style and legislative technology, which can be described as remarkable achievements. However, because the formulation of the code is still in the enlightenment period of the Chinese legal system, it inevitably has some similarities with the early legal culture of mankind. Although Li Kui put forward in his political reform that "serving the country means rewarding those who have the ability". The principle of "punishment must be done" evolved into the principle of "rule of law" in the Classic of Law, and was later regarded as a creed by legalists such as Shang Yang and Han Fei. However, this kind of rule of law is completely different from the western concept of "rule of law" presented in the Twelve Copper Tables Act. As Mr. Liang Zhiping pointed out, "it is not a great experience to compare or even equate this' rule of law' with Aristotle's' politics' and even the modern western concept of rule of law." "In China, the law was a tool of repression in the hands of the emperor from the beginning, and it was almost synonymous with punishment. In ancient Greece and Rome, law was superior to society and could be used to determine and protect the interests of different social groups. "In the canon, there are some provisions that the prince's play is good, but it is not only good, but also honest." There are also some provisions that' Xi Shou (general) will be punished if he receives money below', which can't be said to be harsh, and it has also caused a great impact on the etiquette principles of slave society. However, these "rule of law" measures defeated the hierarchical order of slavery, but brought the feudal hierarchical order. Feudal society is still a hierarchical privileged society. Legalists' view of "rule by law" will ultimately serve "rule by man", far from democracy and equality.