As a fan of online literature, I didn't have any specific information about the Biquge app. However, generally speaking, if the Pen Quge app could not read books, it might be because of one of the following reasons: 1. Internet Connection Problem: If the Internet connection is unstable or disconnected, the Pen Quge app may not function properly and cannot access any content. 2. Device issues: If the device overheated, the battery was low, or the system malfunctioned, the PenQuGe app might not function properly and could not access any content. 3. Software update problem: If there is a software update in the Pen Quge app, you may need to update to the latest version to run normally. If you still can't access the Pen Quge app, try to restart your device or update to the latest version. If the problem still exists, please try to contact the customer service or technical support team of the Pen Quge app for help.