The titles of youth campus be books can be "The Broken Years", "The Mystery of Sadness", and "The Bitter Flower Season".
1. "Broken Years": highlights the bitterness and pain of adolescence and expresses the inner rupture and confusion.
2. "The Mystery of Sadness": reveals the mystery and complex emotions behind youth, attracting readers' curiosity.
3. "Bitter Flower Season": Taking the flower season as the background, it highlights the complexity and contradiction of youth.