The novel reading mode usually referred to automatically entering a specific stage of the plot development when reading a novel, such as the protagonist encountering an enemy, falling into a crisis, obtaining important information, etc. Sometimes, there were some reasons why he couldn't enter the novel reading mode: 1. Software or device malfunction: If the computer or mobile phone software has a malfunction, it may affect the use of the novel reading mode. You can restart the device or try to update the software to solve the problem. 2. Internet connection problem: If the network connection is unstable or disconnected, it may cause the novel reading mode to be unable to be entered. You can try reconnecting to the network or try to change to a different Wi-Fi network connection. 3. The novel file is damaged: If the novel file you are reading is damaged, it may affect your reading experience. You can try to download or change the novel file. 4. Web browser problems: If you are reading a novel in a web browser, you may not be able to enter the novel reading mode due to web browser problems. You can try to restart the browser or change the browser version. 5. Reading settings: Sometimes, you need to adjust your reading settings to enter the novel reading mode. For example, you might need to set the reading mode to automatically open a new chapter or automatically complete the reading progress. If you still can't enter the novel reading mode, you can try to restart your computer or phone or try to change a browser version or reading software.