Never reveal your true strength.
Reserving three points of strength is a life-saving rule.
In this world, everyone is testing you when they first meet. As soon as they open their mouths, they will ask you what you do, where you are, your origin, education, age, work, and background, so that they can label you as quickly as possible. After chatting three or five times, your portrait will be formed in their minds. They will judge you based on your strength and decide their attitude and calculation towards you.
Between people, interests are the essence.
Everyone is running for profit. The maintenance of many relationships is based on interests. People are actually emotionless, and family emotions are based on family economy.
Friendship is also mostly for the purpose of establishing or maintaining interests.
Friends without interest exchanges will only drift apart, and there will be no common topics. Even the most beautiful love is nothing more than a general derivative of the exchange of interests such as physiological instincts, emotional values, and monetary support. The economic foundation determines the durability of love. People are the root of interests. There is only exchange of interests between people. A person who does not know how to hide will only be devoured alive by those who are interested in this society.