The Era of Warring Countries is a game of chess where everyone is a pawn. If you are not a pawn, you have to fight. Fight, maybe win, or lose otherwise you will always be under someone else. The people of this Era did not understand why wars between countries. In their opinion, kings and nobles had meat to eat and wine to drink, so why weren't they satisfied? It is good for everyone to get along with each other. You have to fight for life and death. In the end, it's all just for the game.