Literary version: The past time is gone forever, only various memories remain. The helplessness and nostalgia of not being able to go back to the past, and the desire and longing for the future. None of this is important. What is important is that after experiencing youth, we have all grown up. Understand, even if we have bonds, we have to separate. No matter how shining or ordinary, we are our own main theme and cannot be replaced.
Diaosi version: a story about what a bunch of little kids did as they grew up. . . . . .