The upper-class rich people can't see what they have when they have money, but their needs are met but they are not. Just be content with the present. Free, not tired of demand, no superfluous desire, live and work in peace and contentment. Tao Te Ching is rich if he is satisfied. Feeling rich but not satisfied and happy, we need to highlight wealth relative to poverty in order to get satisfaction. It is psychological emptiness, the needs are not met, and then seek (Zhangqiu Mahao) other things to fill the empty heart. The Tao Te Ching is based on meanness, and it is based on the following.