Life is a ticket without a return ticket. After graduation, we face the society, work pressure and living environment make us panic. We begin to miss the past, sleep with our roommates after lights out, talk about everything with our best friends, and even have secret crushes in the past. All in all, this is an article about the conflicts, entanglements, disputes and reconciliation between friends, and the past events that went their separate ways after graduation but stayed in the memory. I believe that people who have friends will encourage each other.