To write a novel, one needed to first determine the theme and then develop the story around it. The theme of "harmony" could be developed from different angles, such as how to live in harmony between people or how to live in harmony between man and nature. Here are some writing suggestions: 1. Decide on the theme: First, determine the theme of the novel and develop the storyline around this theme. 2. Collect relevant information: Learn about the topic of harmony, such as stories, examples, theories, and so on. 3. Draw up the storyline: Draw up the storyline according to the collected information, including the characters, scenes, conflicts, and so on. 4. Plot development: Start writing, develop the plot, and gradually complete the details of the novel. 5. Shaping the character image: Shaping the character image in the novel includes the character's personality, characteristics, relationships, and so on. 6. Adjusting and perfecting: After writing the novel, repeatedly check and adjust to ensure the quality of the novel. I hope these writing suggestions will be helpful. Happy writing!