Because of Jay Chou's song, "Red Dust Inn" written for her, it was a wound that she didn't understand. In the book, he did not fail her after all, but outside the book, the most innocent and fragile heart of youth was always no match for the cruelty and helplessness of reality. They had practiced meeting again countless times, but they were caught off guard. They were indifferent to each other and speechless. They looked at each other and smiled, laughing at themselves for being ignorant and young. The most painful joke in youth, the ink is gone, and the grudges are gone...