The depth of writing a novel could be reflected in the following aspects: Create characters with depth: Each character has their own unique personality, experience, and goals that the reader can truly understand and empathize with. Deep characters could push the story forward and leave a deep impression on the readers. 2. Construct a complex plot: The plot needs to be logical and reasonable, and it needs to revolve around the characters. The contradictions, conflicts, and climaxes in the plot need to be deep enough to attract the reader's interest and get them involved. 3. Use rich language and description: The novel needs to have enough language means to show the characters, scenes, and plots. The use of appropriate metaphor, metaphor, symbolism, and other rhetorical devices can make the story more vivid, profound, and infectious. 4. Exploring the complexity of human nature: The novel needs to show the deep-seated problems and contradictions in human nature, such as desire, fear, belief, morality, etc. By exploring these topics, the readers could gain a deeper understanding of the nature and inner world of human beings. 5. Pay attention to details and background setting: The details and background setting of the novel can show the author's intention and investment. Details can enhance the authenticity and credibility of the story. Setting up the background can also provide more background information and background stories for the characters and plot, allowing the readers to understand the background and meaning of the story more deeply. Writing a novel required constant exploration and experimentation. Only by constantly improving one's writing skills and creativity could one write a novel with depth and appeal.