First of all, we should make it clear that this function can only be set in Tik Tok software. You can open Tik Tok city map, then use the right mouse button, click Set Route, and then adjust the distance, but it seems that this function can only be set successfully on a tablet.

Build your own city. There is a city selection setting in the settings interface. You can choose your current geographical city, giving priority to Tik Tok, which is made up of the people of the city.