Cangyan Mountain Pass, centered around Cangyan Mountain City, radiates outward for a thousand li on either side, all under the jurisdiction of this mountain pass.
Looking at the ten-part map, this pass borders White Jade City Pass on the left, and Clear Moon Cave Pass on the right. Although the three main passes are separated by some distance, they can mutually support each other from afar, forming a tightly connected defense line.
The Bingzhou guards' defense line is exactly a series of connected mountain passes.
White Jade City Pass to the left, like Cangyan Mountain Pass, belongs to Big Moon Checkpoint.
Clear Moon Cave Pass to the right belongs to Small Moon Checkpoint.
Thus, Cangyan Mountain Pass is the rightmost defensive node of Big Moon Checkpoint's entire defense line.
Under normal circumstances, this defense line, spanning two thousand li, needs many cultivators to patrol to prevent Ten Thousand Demons Ridge cultivators from infiltrating.
