The difference between ordinary people and experts lies in that ordinary people all want to quickly satisfy their selfishness. For instance, when they see a chicken, they rush up and eat it. However, experts choose to cultivate first, allowing the chicken to lay eggs and the eggs to lay chickens. By selflessly satisfying the selfishness of the other party, they achieve their own greater selfishness. Ordinary people can only see the small money they can see at present, while experts can see the big money that others cannot see in the future.