When I was a sophomore, there was a mobile wireless network here, 70 hours in 30 yuan and 0/20 hours in 50 yuan/KLOC, and the network speed was ok.
Sometimes I get disconnected and can play games.
You can also deal with the school cable network, but that's too stuck, and you will often get disconnected.
Personally, I think it is better to open a wireless network.
Wireless network uses mobile phone number plus service password to access the Internet.