Classic of National Law is the first systematic and complete written feudal code in Chinese history, but it is not the first written law. Many specifications have been issued before, but they are not perfect? Li Kui, a famous reformer in the Warring States Period, was the founder of the Fa Jing.

There were many political reforms in all countries at that time. One of the important achievements of Li Kui's political reform with the support of Wei Wenhou was the formulation of the Classic of National Law? The Classic of Law has a far-reaching influence and has become the blueprint of later codes?