Opportunities vouchsafed by Heaven are outmatched by terrestrial advantages, which in turn are outmatched by the harmony among people.
The city of three miles, the country of seven miles, was invincible when attacked by the Lord of the Rings. If the husband attacks it, it will be the right time, and if it is invincible, it will be the right place.
The city is not too high, the pond is not too deep, the army is not very profitable, and there is not much rice, so it is not as good as people and peace.
Therefore, the people in the territory do not take the border, the country does not take the risk of mountains and rivers, and the benefits of the world do not take the benefits of war. Those who gain the Tao help more, while those who lose the Tao help less. If there is less help and more help from relatives, the world will be smooth sailing. Take advantage of the world and attack your relatives. A gentleman wins without fighting.