There are five campus network public wireless signals in the university town, namely HIT, Tsinghua, Peking University, UTSZ and UTSZ-LIB, in which HIT is the basic coverage of the whole campus of Harbin Institute of Technology, UTSZ is the basic coverage of the whole campus, and UTSZ-LIB is the wireless signal only covering the library of the university town. When searching for the above wireless signals, campus network users can log on to the Internet by using the campus network account. Because SIA's strength can't meet the demand of network peak hours, users are advised to use wired network to surf the Internet in the dormitory as much as possible.