Online novels had a wide range of topics. The most popular topics varied according to regions, audience groups, platforms, and other factors. However, generally speaking, the following topics were more popular in online novels: 1. Fantasy: This genre is usually related to myths, legends, magic, etc. It describes a variety of fantasy creatures, characters, and stories. The audience includes young people, middle-aged people, and the elderly. 2. City life: The works with the theme of city life usually describe the life, work and love stories of ordinary people in the city. These works are usually more relaxed, humorous and realistic. The audience is mainly young people. 3. Historical fiction: Historical fiction works usually incorporate fictional historical elements into modern novels to create a new historical background. The audience is mainly readers who like history and fantasy. 4. Future science fiction: Future science fiction usually depicted human life, technology, and adventures in the future. This type of work was usually more fantastical, adventurous, and exciting. The audience was mainly readers who liked science fiction and fantasy. 5. Romance and marriage: Romance and marriage works usually describe the emotional entanglements and marriage stories between men and women. The audience is mainly female readers. These works often involve topics such as family, marriage, and love. It should be noted that web novels have a variety of topics and different readership groups. Therefore, every author should choose a suitable topic and story direction according to their own writing style and target audience.