You don't have to try. If I guess correctly, you work in the school library and want to watch videos during office hours, right? I used to have a friend who was in charge of the network in the school network center. Your connection failed. Thunder can't be used now, and it has been disabled by the network management center. Because online software and players such as Youku, Tudou and Thunder account for a large number of downloads, generally these well-known ones will be blocked by you, and the PPS you can use may not be known yet, so you can still use it. I hope I can solve your doubts! !