This is a story about youthful time and the passage of time. They, a group of people, have gone through many vicissitudes of life on the campus of youth and in the bustling city, but they have always maintained their original intention, loving, hating, grieving, working hard, and passing by the people they love. . . . This whole life, I have been relying on you. Don't want to let go. ——Shu Xiaoxiao In this life, I will never leave you. ——Xia Mingcheng