Gu Man's novel style was mainly romantic and youthful. Her works often involved topics such as love, friendship, dreams, and growth. The intersecting parallel lines were an image that often appeared in Gu Man's novels. It represented the relationship between two people. Although there was a certain connection, in some aspects, they were still parallel and could not come together. Gu Man's novel, Silent Flute, involved the concept of intersecting parallel lines. In the novel, He Yichen and Zhao Mosheng had been together for a long time, but their relationship was like parallel lines that intersected. Although they met and got along briefly, they could not be together in the end. The use of this concept in the novel could not only show that the fate between the two people was not enough, but also let the readers feel the regret and beauty of their youth. At the same time, this concept was often used to describe the relationship between two people, making people feel helpless and struggling.