This is a story about youth, the experiences of several young people when they were young. When we look back on the past in our thirties, the youth where we cried, laughed, and loved is still vivid in our minds. Yi Ping's persistence, Mi Lu's cynicism, Nan Sheng's cancer, Shaokun's departure, Tang Tang's unfamiliarity, and my lost self, these are all far away from us. All that remains in my memory is the starlight on campus at night and the sound of basketball on the playground. Year after year, they are still the same as before. But can we go back? Although we are no strangers to each other after meeting each other many years ago, those past events have created gaps in our hearts that can no longer be repaired. Whose youth was not absurd, and whose youth was not arrogant. What I write about is our once absurd and arrogant youth.