A primary school is a class of primary schools, a junior high school is a junior high school for a group of people, a senior high school is a high school for several people, and a university is a university for one person. What does that mean? When I was a child, I was full of friends, but the more I grew up, the more lonely I became. I went to college and walked for four years in a so-called mature way. Everyone has his own life, no matter how great you are. . . I only miss the past middle school years. Stop-and-go universities will eventually understand this sentence.