The article is based on myself and my friends around me, describing the youthful ignorance between boys and girls, focusing more on psychological description, looking at the relationship between Xu Fang and Li Yiyi from the perspective of the parties involved, as well as the ambiguous speculations between them that they are unwilling to say. Including the entanglement, sadness and uneasiness that two people have when going to school and facing the future. From middle school to work, it can be said that it is a green plum, but not all green plums have a happy ending. Li Yiyi and Xu Fang are such people.