I brought my own wireless network card to the hotel. After plugging it into the hotel's wired socket, my laptop can find the signal and connect, but there is no network.

First of all, you should have brought a mini unlimited router. If so, being able to connect to the wifi signal does not mean that you are connected to the hotel's network, which means that you are not connected to the hotel's network cable or router. As long as it is powered on and your laptop is connected to the router, the laptop will show that the wifi signal is normal. So there is a problem with the wiring in the room itself where the web page cannot be opened. If you are satisfied, please accept it.