This map actually began being drawn a few days ago, when they surveyed the surrounding terrain; drawing the map would make it easier to plan the next step. However, Du Xixi and 2569 came yesterday, and they were about to return to the Blue Star Empire, so whether the map was drawn or not didn't matter much.
It was only after Du Xixi learned of this matter and thought it was a good idea to draw a map as a keepsake that Chen Dan decided to continue drawing the map early in the morning.
Every slope, every cave, every potentially dangerous area where animals might appear, and every cave where Ke Lian and his team thought they could temporarily stay... Chen Dan had been doing battlefield analysis for decades, but it was his first time drawing a map, so he was especially meticulous, with his thoughts and actions closely connected, leaving no room for even a shaky hand.
