Qin completed the unification of the six countries in the first decade from the demise of Korea in 230 BC to the demise of Qi in 22 1 BC, ended feudalism since the Spring and Autumn Period and the Warring States Period, and established the first unified multi-ethnic centralized feudal country.

The unification of the Qin Dynasty provided the people with a relatively stable production environment. The Qin Dynasty implemented many measures to eliminate separatist factors, which laid the foundation for the long-term reunification of China and had a great and far-reaching impact on the development of China's history.

For a long time, China's feudal society stood in the forefront of world civilization with its highly developed economy and culture, which could effectively resist foreign aggression and maintain national independence, and was closely related to the pioneering work of Qin reunification.