This problem involved network connection issues. The novel bookshelf was an application that needed to connect to the server through the network to obtain novel content. If the phone could connect to the Internet elsewhere, it meant that the phone was connected to the Internet, but the novel bookshelf couldn't. It could be because the application on the novel bookshelf wasn't connected to the server correctly. This could be because the application on which the novel bookshelf was located did not have enough permission to connect to the Internet, or the server was undergoing maintenance or fault handling. It could also be that the internet connection was too slow, causing the novel bookshelf to not respond to the request in time. If you can access the internet elsewhere on your phone but can't connect to the novel bookshelf, you can try to restart the application where the novel bookshelf is located or try to access the novel bookshelf on other devices. If the problem still exists, you can try contacting the novel bookshelf developer or customer service for further help.