As far as I know,there is no military manual of value nor any sensible military expert,ancient or modern,Chinese or foreign,that does not oppose passive defence,whether in strategy or tactics.

• 据我所知，任何一本有价值的军事书，任何一个比较聪明的军事家，而且无论古今中外，无论战略战术，没有不反对消极防御的。