This did not mean that Black Mountain had not become stronger or was slacking off. Instead, like Nan Ge, it started to refine its Demon Qi, no longer pursuing realms purely.
This was not something Dong Huang taught him, but rather a secret method gained from his bloodline heritage. This served as a wake-up call to Feng Qing'an, who considered refining his Soul Power too.
However, he checked the Four Door Rules he understood and was currently practicing: soul nurturing, soul accumulating, soul tempering, and soul refining... He was refining his Soul Power every time he practiced, always in the process of forging himself. There was no need to put himself through more hardship.
Even though Black Mountain had returned from the underworld, Feng Qing'an did not spend much time with it. As Dong Huang brought it back along the way, Feng Qing'an appropriately told the creature to roll off into the mountains to find Mr. Bai and not bother him.
