There are many reasons why online novels are not comprehensive. The following are some possible factors: 1. The copyright of novels: Many novels are published online. However, due to copyright issues, websites would not publish all novels for free, so it was difficult to see all novels online. 2. The problem of updating novels: Many novelists work part-time or part-time. They may not have enough time to update all their novels, so it is difficult to see all their novels online. 3. The speed at which the novel updates: Some novels update very quickly. The author may only publish the first chapter of the novel in a few days or weeks. This will make it difficult to see the complete novel online. 4. The classification of novels: Some novels are divided into different categories such as fantasy, urban, romance, etc. There may be overlapping or similar novels between these categories, making it difficult to see a complete collection of novels on the Internet. Therefore, there are many reasons why online novels are not comprehensive. We need to patiently search and wait to see a complete collection of novels.