The main theme, the main plot, and the gist were three commonly used words in novel writing. The specific differences between them were as follows: 1. The theme is the core concept of the novel. It refers to the theme or values that the novel wants to explore or express. The theme was usually expressed through storylines, characters, and environmental descriptions. The theme was that the soul of the novel determined the nature and style of the novel. The theme of the novel usually needed to echo with the plot, character image, environment description and other factors to form a complete and meaningful theme world. 2. Main storyline: The main clue of the novel's plot refers to the main plot of the novel and the main direction of the plot's development. The main plot was usually composed of a series of events and scenes that pushed the plot forward. The main storyline was that the structure of the novel determined the structure and content of the novel. Thesis: Thesis refers to the core meaning of the novel, which refers to the main values and life enlightenment that the novel wants to express. The gist of the story was that the core value of the novel was usually expressed through the main theme and plot of the novel. The main theme of a novel is the main theme sentence of the novel. The core expression of the novel determines the meaning and value of the novel.