The jade token that Gui Hufei crushed.
On this jade token were engraved three layered formations, inscribed by the ancestor of the Soul Devouring Sect, Wu Hundai.
Wu Hundai was the foremost formation master in the demonic sects. He used formations to store a portion of his power within the jade token. Of course, Wu Hundai was a powerhouse in the Nirvana Realm! The formations he inscribed could at most store power up to the Third Heavenly Layer of the Reincarnation Realm. If the power exceeded that, the formations and the jade token would definitely shatter.
This method of using formations to store power in a jade token is extremely difficult to achieve under normal circumstances. The larger the power stored, the more the entire process must be completed by a single individual, from inscribing the formation to infusing the power. In the entire Earth Profound Realm, there are almost no people with a formation attainment comparable to Wu Hundai.
