Have you ever seriously thought about the realities of life such as poverty and wealth? Have you thought about it at the individual, family, social, and national levels? We are accustomed to thinking in a positive direction, and we can indeed find the core reasons for what is happening to a certain extent, but it is still not thorough enough. If you think in the opposite direction, you will find that the realities of life such as poverty and wealth are inevitable, but individual differences continue to derive differences in wealth. When you do not understand a certain phenomenon, you think from the perspective of the beneficiary, and it turns out to be really cruel. Remember one sentence: the bright side of the moon is because it shines on the sun, but the moon always has a dark side.