How an Exchange of Hostages Turned into a Conflict｜China History

Last time, I told you a story about the State of Wei because it was the initiator of the war against the State of Zheng. So, I finished telling the story of the State of Wei and now I'm going back to the war between the State of Zheng and the State of Wei. The main thread of my stories is the hegemon of the Spring and Autumn period, as there were too many countries and it was too chaotic, this method could make the story clearer.