Heaven Swallowing Demonic Art.
This was a supreme cultivation art passed down through the Heavenly Demon lineage of the Holy Demon Sect.
This art could devour and refine a Cultivator's or demon beast's entire cultivation, sparing neither blood essence nor memories. It truly squeezed the marrow from their bones.
With this art, one could swiftly break through bottlenecks, advance realms, and increase one's cultivation.
Back then, Xiao Yuanshan, the ancestor of the Xiao Family of the Dragon Abyss Dynasty, had relied on this art to devour and refine the Xiao Family's Cultivators, successfully breaking through to the Human Immortal Realm.
Yet the Heaven Swallowing Demonic Art he cultivated was only an incomplete fragment.
The true, complete version of the Heaven Swallowing Demonic Art was even more astonishing.
Back then, a Demon Ancestor of the Holy Demon Sect fled to Treasure Vase Mountain. Using this art, he struck a deal with the demon race in exchange for the right to live in seclusion within Treasure Vase Mountain.
That had happened over a hundred thousand years ago.
White Moonlight had not yet been born then. She knew of the matter only through memories inherited through her bloodline.
She had also relied on the Heaven Swallowing Demonic Art to cultivate into a Heavenly Demon.
She had no choice but to admit that.
However, she had always harbored doubts regarding the secret of the Demon Court's destruction and the disappearance of its many Demon Ancestors.
Perhaps only the Holy Demon Sect could answer that question.
"I heard that only one Earth Immortal Realm expert from the Holy Demon Sect escaped here back then."
"Now, more than a hundred thousand years have passed. Your Holy Demon Sect has cultivated quite a number of experts, and you have even enslaved powerful members of my demon race."