Black Mountain's lair was not a fixed, hidden location. As the leader of Black Mountain, Aliusan had thoroughly learned the cunning of a rabbit. Just as a cunning rabbit has three burrows, Aliusan had prepared at least three nests for his own newly hardened wings, ensuring that in a crisis, he and his loyal disciples would have enough dens to escape to.
This shadowy faction on Guru Mountain had not been established for long; Aliusan had almost single-handedly gathered Guru Mountain's dark elements. However, this didn't imply Aliusan himself was exceptionally powerful. A cripple, regardless of his personal strength, would find it unrealistic to expect others to willingly lay down their lives for him.