It's like playing a game. If you think you are the protagonist, you will naturally not pay attention to those NPCs. Whether in school or in society, people who I thought would never interact with each other, who were originally just people around NPC, gradually became familiar with me, and even occupied my heart. Later, when I thought about it carefully, I was probably just someone else's NPC. Don't treat NPCs as human beings, otherwise, you may get bent over if you are not careful.