The great Dong Mountain was the strangest and most beautiful mountain. Facing the ocean with its back to the land, its front was a stone precipice as smooth as jade. To its back, there was a green forest nurtured by the fertile soil. In people's rational thoughts, it was impossible for anyone to go up or down the smooth precipice. This record was broken by Fan Xian.
The rear of Dong Mountain was also dangerous. Other than a set of long and straight stone steps that climbed steeply into the clouds to the summit of the mountain, there was no other way up. If one wanted to forcefully attack, they could only proceed along this path. Particularly in the narrowest part, if one man held the pass, 10,000 enemies would not be able to pass. It was a location easy to guard but difficult to attack.