The establishment of the Yuan Dynasty ended the separatist regime in China after the demise of the Tang Dynasty, wiped out Jin, Xixia, Tubo and the Southern Song Dynasty, and reunified the land of China. The Yuan Dynasty's historical contribution is to lay the territory of modern China, which is equivalent to the Qin Dynasty ending the division of the land of the Central Plains, while the Yuan Dynasty ended the division of the land of the Central Plains and the border ethnic areas, truly establishing a unified pattern, and establishing a country with power operation under such a unified pattern, establishing a provincial system and abolishing the Qin Dynasty. !

The Yuan Dynasty also determined the capital of such a unified country-Beijing (from then on, any regime whose capital is not in Beijing will either move to Beijing or perish within a few years), and it has never changed since then and has been in use ever since! !