Ten years, mathematically speaking, only accounts for 1/8 of a life, but the ten years of youth have far more meaning and influence than 1/8. Gu Xiaobai always felt that the ten years of being entangled with He Tian had exhausted all his energy and youth. Before the age of 30, he had entered old age with someone. Gu Xiaobai: Classmate Xiaobai who is smart but often confused. I never imagined that I, who had been an obedient student since childhood, would one day fall in love prematurely, leading to a "misguided path" from which I would never return. He Tian: He Tian, who grew up in a free-range way, has always been happy-go-lucky. His life belief is that "the boat will be straight when it reaches the bridge." After meeting Gu Xiaobai, he had prospects and expectations for the future for the first time. For the first time, he clearly knew what he wanted.