The interpersonal relationships in this circle change very quickly. Someone who is very close to you today might fall out with you tomorrow. Similarly, someone who has nothing to do with you today might shake hands and make peace tomorrow. Although I talk about human relationships and social etiquette, in reality, I view issues very objectively. Don't think that I used to like to criticize people (I'm much better now), but I really do strive to learn from the virtuous and reflect on myself when encountering the unvirtuous.