It tells the real events that happened in Class 18. Class 18 went from being envied by everyone to being hated by everyone. The class went through a lot. Among them, the change of the class teacher had a profound impact on us, giving such a young name 18 bad memories. The things that happened to our class during the period were unique. We were isolated in school, the class teacher went from good to bad, and a series of other things filled in our high school life.
Concept: The changes time brings to people