Sun Tzu, a native of Le'an, Qi State (now Huimin, Shandong Province), his Art of War is recognized as the oldest work on military theory in the world. Being good at fighting is the core of his military thought. He said: those who are good at fighting know how to win, but they have no name of wisdom and no meritorious service. Because in his view, the victories won by the real warriors are by no means the kind of bloody and bitter battles of one thousand and eight hundred self-destructions, but better than easy-to-win-- easy-to-fight and easy-to-fight enemies one by one. those who have won and lost-fight an enemy who is already in a position of defeat.
passage?
if you don't fight, you can make the other side withdraw its troops.