Everything in this exchange had taken place within the airtight rock strata deep underground. Li Yan could do such a thing because he was a cultivator, already possessed of ever-changing methods.
But in Li Yan's senses, once those black vapors and yellow threads appeared, they had clearly become corporeal, yet their attacks could still ignore the surrounding rock layers.
The instant Li Yan shattered the yellow threads and black vapor, his body turned transparent, and every trace of his aura vanished without a trace, as though he had never been there at all.
The yellow threads within the freshly shattered black vapor, along with the scattered black particulate mist shrouding Li Yan, gathered together again like lightning in the next moment, once more transforming into a monstrous black vapor python.
Yet at the instant it condensed, Li Yan had already vanished. With a swing of its head, it could no longer find the person before it.
The black vapor python abruptly grew restless, crashing wildly about within the rock strata, yet making no sound at all.
No matter how it searched, it could no longer find that figure. After searching for some time, the black vapor python finally seemed to withdraw unwillingly into the dark yellow light screen.
Li Yan stood concealed in the darkness, watching the black vapor python's movements all along. Even after it had retreated for some time, he did not reveal himself.
Gazing at the dark yellow light screen that had returned to calm, Li Yan's eyes flickered continuously.
"Black Flame Crystals are named by the Red-Eyed Flame-Horned Beast clan. Given their understanding of Black Flame Mountain, that name naturally represents a clear definition of the object.
*Then Black Flame Crystals, like spirit stones, are some essence slowly condensed by the rules of heaven and earth.