Non-student dormitories (such as teachers' dormitories) cannot only use the campus network, but must be forced to run the campus network+broadband double line. You can access off-campus resources through multiple links (educational research network, telecom, Netcom and other operators), which is relatively fast, with a cost of 45/ month and an account opening fee of 50 yuan.
For other details, please consult the network management center at 854 10000.