When you are a medium distance from the Access Point it is harder to triangulate you wifi signal(not impossible) then if you are very close or very far away. Tails is zero trust and zero information OS. If you use your built-in wifi, mac addresses and serial numbers have been burned into it. A cheap WiFi dongle should be used to avoid this and can be easily disposed of if needed and should not be able to be tired to your computer. To have a chance at any evidence the computer, WiFi dongle and Tails OS USB need to all be recovered and It would still tell very little.
Starlink is a option and should completely bypass the Great Firewall of China.