Youth is a colorful word, with a sweet and sour taste, but it makes people keep recalling it. No matter how bitter or sweet it is, you will never forget it. Even if you are no longer young and the person has passed away, you still want to go back to that time and the little beauty you once had. Missing it is the best excuse for youth, which not only comforts oneself, but also comforts others. When I reminisce, I still hope that I can go back to the missed moment and make up for my stupidity, just to be able to retain the best time at that time. There is no me in your world, not that it was not there before, but after I missed it, there will be no me in your world anymore.