The idea is to remind us to keep some sense of self-protection in interpersonal relationships. When getting along with others, we should pay attention to protecting our privacy and personal space, and don't easily expose everything to each other. At the same time, we should also pay attention not to be too intimate and keep an appropriate distance and independence.
The idea is not to say that you don't trust others or deliberately leave a retreat, but to remind you to keep a certain balance and rational thinking in interpersonal relationships, not to be too involved and not to be too alienated. When you get along with people, you should be flexible and flexible, so that you can have some space and room when you need it.