Sad novels usually attract a lot of readers because readers are often infected and moved by the story and the emotions of the characters in the novel. In novels, sadness was often an important element to promote the development of the plot and an important means to shape the character's image. Sentimental novels would usually give readers a deep emotional experience that would cause them to resonate and think. Through the story plot and the emotions of the characters in the novel, the readers can feel the impermanence and fragility of life and realize the importance of cherishing the people in front of them. In addition, sad novels could also bring some psychological comfort to the readers. Reading sad novels when experiencing setbacks and disappointments in life can give readers some strength and hope to cheer them up again. Therefore, sentimental novels had always been very popular in the literary market.