Wei first appeared in the Warring States period, mainly in the vicinity of the capital Henan, which is now Kaifeng. The state of Jin was successively inherited. The State of Jin was a vassal state of the Zhou Dynasty, and its first monarch was Zhou Chengwang's younger brother Tang Shuyu. Throughout the Spring and Autumn Period, it was the most powerful country, or at least one of them, with a large territory. Including parts of Henan, Hebei, Shanxi and Hubei. At the end of the Spring and Autumn Period, the land was divided by three powerful people in China, and three new countries, namely Zhao, Wei and Han, were established. This is Jin's famous division of the three clans, and it is also a landmark event in the early Warring States period. The Three Kingdoms built on Jin later became one of the Seven Heroes of the Warring States, among which Zhao and Wei were recognized as powerful countries, and both had the strength and opportunity to unify the world. This shows the strength of the state of Jin. It can be said that without the three-thirds of the world of Jin, Qin could not have the opportunity to unify the world.