It depends on whether Hunan Library provides wireless network. If so, you need to set the wireless network connection mode. The library should introduce the process of establishing wireless network connection, modifying IP address and communication protocol. If it doesn't work, you can ask the network administrator of the library to help you set up the computer. That's what I did in Zhejiang Library. I don't know what the situation is in Hunan Library. You'd better ask the library staff for details.