We are looking for our destination in thousands of worlds, facing the world's thousands of cuts, just like the wind and rain during migration of migratory birds, and are finally tempered into steel. Many people use different adjectives to describe youth. Some people say that youth is used to hurt, and some people say that youth is used to pay tribute. However, youth is just a small stage in life. It is the small details of life. It records our laughter and tears, but I don't know if I will still remember the past, the past laughter and the past heartbreak when I fly in the sky of youth. How will I look at it at that time?