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第十七.练心力
练兵实纪-第十七.练心力
第十七.练心力
凡人之血气，用则坚，怠则脆。劳其筋骨，饿其体肤，大人且然，况兵乎？不宜过于太甚。是谓练心之力也。
练兵实纪 · 戚继光 · Chapter 91 of 222
第十七.练心力
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