First, the lack of money really determines that most of the time is spent on making a living and there is no time to do other things. One more thing, economic strength often determines your interpersonal environment, and you have no money around you. People's desire for friends is far less than their desire for money, which will naturally reduce social interaction. It's not that they can't afford to make friends. If they want to make friends, they can definitely take the initiative, but it is more difficult to make friends across circles.