1. network problems: first, please make sure the network connection is normal. If the network connection is unstable or slow, it will lead to the inability to open the webpage or video recited by Xu Taoshi.
2. Website problem: There is something wrong with trying to open the content recited by Xu Taoshi through a specific website or platform. You can try to use other browsers or visit other similar websites to see if you can open them.
3. Copyright restriction: The content recited by Xu Taoshi is protected by copyright and needs to be viewed or purchased on a specific platform.