The easiest way to temporary bypass GFW is to open a proxy client like SSR on your phone, set the “Allow LAN” (允许来自局域网的连接) option and let browsers and other softwares like telegram connect the proxy on your phone with your phone’s IP and the port. You can also connect to Tor with this trick on TailsOS.
For setting up a proxy qube, you can read
my guide on this forum or use this project on github. Or if you found any VPN or any proxy software that supports TUN, you can install it on a qube, set the qube as NetworkVM, and it would works like a router.
Qubes OS won’t automatically connects your NVIDIA GPU on PCIe. If you want yo connect it to a qube you can pass it in the qube’s setting. And the wireless card on PCIe is automatically passed to sys-net. If it works it would show you a red internet connection icon on the top right.