Because the examination topic was this area, An Jing quickly confirmed using the reference that the location of the wilderness bandit cultivators' camp, which had stolen the detection equipment, was the fortress area remaining from the development of the Beishan Lake marshlands over forty years ago.
The terrain of that area is complex, and there are numerous traces and pollution left from the battles between cultivators and monsters/demons. Even the people from the wilderness rarely approach it. Now, it truly is a region of activity for genuinely menacing elements - the evil demons.
Exactly for this reason, if it were to be used as a combat mission, it would be too dangerous. Therefore, the exam only requires simple initial reconnaissance, which is also a test of the students' capabilities in intelligence gathering.
