Chương 354: Chapter 308: The Fairy Bestows a Treasure, 13th Grade Heavenly Material! (4K)_2

Those who had the ability to set a trap twenty thousand years ago were certainly not simple characters.

"If we could find the Hallucinatory Dark Demon Patriarch, perhaps we would know who taught him the Summoning Demon Great Formation."

Shangguan Zhao'er was skilled in deduction, strategy, and formation paths, and she quickly thought of an important figure.

Twenty thousand years ago, the founder of the Summoning Demon Palace, the Hallucinatory Dark Demon Patriarch, ascended to the Immortal Realm.

It was this individual who left behind the Summoning Demon Great Formation.

But with the cultivation level of the Hallucinatory Dark Demon Patriarch at that time, it was impossible for him to predict events twenty thousand years into the future.