Which countries participated in the Battle of Jigup? When did the war happen?

The Battle of Zipu took place 38 1 years ago, and it was a war in which the combined forces of Chu and Zhao defeated Wei.

38 1 years ago, Chu sent troops to help Zhao, and fought Wei Jun in the west of the state. The Chu army crossed the gate of Dewey Girder (now Kaifeng City, Henan Province), stationed in the dense forest, and arrived at the bank of the Yellow River. The combined forces of Chu and Zhao defeated Wei Jun, and Zhao seized Jipu (south of Wei County, Shandong Province) and Huangcheng (west of Yellow River in Henan Province).