The older you get, the more you miss those green years, from friendship to love, from ignorance to maturity. Maybe you have experienced it, maybe you are experiencing it, but these years are the most beautiful and the most unforgettable. Maybe, you will find that the stories of Muyu, Song Lu, A Le, and Summer are your stories (PS: This is the first time Ye Han has written an article. Please forgive me for my bad writing. I hope everyone likes their stories)