In which country was Yunmeng Mountain in the Warring States Period?

Yunmeng Mountain is in the state of Wei.

Wei's territory includes the southwest of Shanxi, Yunmeng Mountain is in Jiaokou County of Shanxi, and Jiaokou County is in the west of Shanxi, so I think it should be Wei.

Zou Yan, the founder of the Yang family, was a native of Qi, a famous thinker at the end of the Warring States Period and a master of the theory of Yin-Yang and Five Elements.

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