There is no legend of grandeur, a plain but fulfilling life. In this way, Xia Xiai has gone through every bit of school life and a quarter of her life. Jian Xi, who has two separate sides of brightness and sadness, and Hou Tianyu, who is like a living treasure, gave her what kind of friendship, what kind of love his doting but not doting father gave her, and what kind of spiritual growth school life brought him... All in those green years.