In a headwind situation, a scholar can defend the country with an abacus and a hoe. The core anti-routine of the whole book is: How can a civil servant with no military talent use to defend a city that must be abandoned? The answer is - let this city become a place that is "not worth attacking", then make this city a place that "cannot be defended even if it is defeated", and finally make this city a place that "has to be saved". The protagonist's political wisdom does not lie in power struggle, but in an extremely top-notch "resources and people's hearts management technique."