Now that she found the brook, Mo Tiange could finally determine her position on the map. After that, she cautiously crafted an itinerary that would allow her to avoid running into other people. It was fortunate that the map provided her with a general idea of what those places would be.
This map was basically a manual for disciples. If she looked for a place that everyone would probably dislike, she could avoid most people. Even if there were some people who were out of luck and were transported to that place, they presumably would also leave eventually.