We haven't even passed a third of our lives. Have we stopped looking at people and things with a child's eyes? At this moment when you are about to mature but not yet mature, when you are about to grow up but not grow up, do you regret it? I regret that I ever wanted to grow up. Or are you unwilling to give up? I don't want to be at an age where I can't do anything. The age of 20 seems to be the age of youth and beauty, or is it actually the beginning of learning to distinguish right from wrong, knowing good and evil, and gradually derailing from simplicity? Where is the dividing line between growing up and not growing up, between children and adults?