Language description, expression description, action description, and appearance description were commonly used rhetorical devices in novel writing. Their main functions were as follows: 1. Increase the reader's perception and understanding of the characters, scenes, and atmosphere so that the reader can better immerse themselves in the story. 2. By describing the language, expression, movements, appearance and other aspects of the character's personality, it is easier for the reader to resonate and resonate with emotions. 3. Showing the character's psychology, expressing the character's emotions and thoughts, so that the reader can better understand the character's inner world. 4. provide clues and hints for the development of the story to help readers better understand the plot and the relationship between the characters. 5. Increase the literary value and artistic appeal of the novel so that readers can feel the author's imagination and creativity. Using different methods of description in a novel can create different literary effects, allowing readers to better understand and feel the characters, plot, and theme in the story.