1, intimacy distance (0. 15m-0.44m). The smallest distance in interpersonal relationship, people within this range, belongs to a kind of intimate relationship.
2. Personal distance (0.46m- 1.22m). There is a little distance from the appropriate limit in interpersonal communication, and there is not much physical contact with each other. Friends and acquaintances belong to this distance. If they are acquaintances, the distance between them is 0.46 meters closer.
3. Social distance (1.2m-2. 1m). This kind of distance is more formal in social or etiquette, and most people will keep this polite distance in formal occasions and social gatherings.
4. Public distance (3.7m-7.6m). Generally speaking, it is the distance between unrelated strangers and the distance between public speakers and listeners. In this range, there can be no contact between people, or even turn a blind eye.
The above is an introduction about the safe distance between people. Between strangers, once someone breaks this distance and wants to enter the "personal distance", it will make the other person feel uncomfortable and want to stay away immediately.