The theme refers to the core idea of the novel or the basic value judgment that the novel wants to express. The theme was the soul of the novel, the center of the novel's content, and the core value of the novel. The meaning of the theme was the author's judgment and thinking about the core values of society, life, love, friendship, family, and destiny. The theme was the core idea of the novel, which determined the content, structure, and form of the novel. The relationship between the theme and the subject matter is that the theme is the soul of the subject matter of the novel and the subject matter is the foundation of the theme of the novel. The theme was the soul of the novel, which determined the content, structure, and form of the novel, while the theme was the foundation of the novel, which determined the popularity and fate of the novel. The theme and the subject matter were mutually dependent and mutually reinforcing. A good novel not only needed a profound theme but also a good theme to attract the attention of the readers and resonate with them.