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简介：Li Guozhen sighed: If you don't know a few of those Bai Zong characters, how can you understand Sun Tzu's Art of War? It's just playing the piano to a cow. Glancing at Wu Xiang: Old General, your task is more difficult than mine. I can just follow Sun Tzu's Art of War, but you want to talk about the experience and lessons of the Liaodong War.