The virtue of rulers lies in promoting good governance and improving people's livelihood. The meaning of this sentence is that the virtue of saints lies in promoting good governance, and the foundation of good governance lies in people's livelihood; The starting point of people's livelihood is agricultural priority; When agriculture goes up, people will have plenty of food and clothing. People who have plenty of food and clothing will cherish and maintain their bodies, cherish themselves and be afraid of punishment, so naturally they will not steal or participate in disasters. Therefore, the virtue of saints lies in improving people's livelihood, and the teaching of the world lies in farming and animal husbandry.