The most orthodox source should be from "Sun Tzu's Art of War: Military Struggle": "If the army does not attack, the city will not attack, the land will not fight, and the emperor's orders will not be accepted."
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Chairman Mao was proficient in "Sun Tzu's Art of War", and when he abandoned Yan'an, he quoted the idea of ??"Sun Tzu's Art of War" that "does not care about the gains and losses of one city or one pool."
Thinking about reading depends on action.
I have read as many books as the stars in the sky, such as Wanba's Diary of a Troupe, travers's Aunt