Wei (; ; Old Chinese: *) was one of the seven major states during the Warring States period of ancient China. It was created from the three-way Partition of Jin, together with Han and Zhao. Its territory lay between the states of Qin and Qi and included parts of modern-day Henan, Hebei, Shanxi, and Shandong. After its capital was moved from Anyi to Daliang (present-day Kaifeng) during the reign of King Hui, Wei was also called Liang. History Foundation Surviving sources trace the ruling house of Wei to the Zhou royalty: Gao, Duke of Bi, was a son of King Wen of Zhou. His descendants took their surname, Bi, from his fief. After the destruction of Bi, Bi Wan escaped to Jin, where he became a courtier of Duke Xian's, accompanying his personal carriage. After a successful military expedition, Bi Wan was granted Wei, from which his own descendants then founded the house of Wei. Spring and Autumn period Jin's political structure was drastically changed after the slaughter of its ruling dynasty during and after the Li Ji Unrest. Afterwards, "Jin ha[d] no princely house" and its political power diffused into extended relations of the ruling family, including the Wei. In the last years of the Spring and Autumn period, the founders of Wei, Zhao, and Han joined to attack and kill the dominant house of Zhi in 453 BCE, resulting in the partition of Jin. King Weilie of Zhou finally legitimized the situation in 403 BCE, when he elevated the three houses' heads to the rank of marquess.

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Wei (; ; Old Chinese: *) was one of the seven major states during the Warring States period of ancient China. It was created from the three-way Partition of Jin, together with Han and Zhao. Its territory lay between the states of Qin and Qi and included parts of modern-day Henan, Hebei, Shanxi, and Shandong. After its capital was moved from Anyi to Daliang (present-day Kaifeng) during the reign of King Hui, Wei was also called Liang.