It was probably due to the fact that the ground was often upside down, hence the soil could not stick to the mountain peak. As a result, it was not covered by vegetation, and it had been "baptized" by the strong wind for many years.
The "stalagmites" hanging down from Thousand Blades Peak were as smooth as mirrors and as slippery as a layer of grease.
However, that was not a problem for Meng Chao and Ice Storm.
After all, they were not real mirrors.
The tiny gaps that could not be seen by the naked eye were solid enough to act as rock-climbing nails for Meng Chao and Ice Storm.
Moreover, Meng Chao discovered that many stalagmites were parallel to each other. They did not seem to be naturally formed dents.
It was just enough for him to comfortably extend his fingers or toes into them to form a simple "staircase."
Ice Storm told Meng Chao that these were all traces left behind by the Holy Light Army from three thousand years ago.