The various immortal cultivation powers had already sent people into Immortal Island last time and learned what lay within.
Treasures such as the fusang divine tree, the Immortal Blossom Garden, and the immortal's residence had left many Eternal Giants green with envy.
There were also immortal-grade materials scattered everywhere on the island. If not for the restrictions left by the Ancient Immortal, people would have hauled them away long ago.
Such a treasure trove posed no danger and could be entered and exited at will.
How could those immortal cultivation powers possibly give it up?
The various immortal cultivation powers of the Heavenly Origin Continent and the Southern Heaven Continent might already have been joining forces in secret, preparing for Immortal Island's next appearance.
There were only two ways to break the current deadlock, protect Immortal Island, and reclaim the Myriad Demon Sea.
The first was for the Mountain Sea Alliance to gain a Heavenly Immortal Realm expert powerful enough to deter the various immortal cultivation powers.
The second was for a third-party immortal cultivation power to intervene and completely disrupt the plans of the many immortal cultivation powers on the Heavenly Origin Continent and the Southern Heaven Continent.
At present, the only one with any hope of breaking through to the Heavenly Immortal Realm was the Source Gu of the Immortal-Eating Gu.
But the Immortal-Eating Gu had been bred by the Ten Thousand Gu Demon Patriarch. Once it appeared and the many immortal cultivation powers learned of it, another "Demon-Slaying Assembly" might well be held.
At that point, the Mountain Sea Alliance would truly have nowhere left to stand, and the Great Flame Dynasty would be destroyed in one stroke.
Thus, before Lin Fei became truly powerful, the Immortal-Eating Gu absolutely could not be exposed.
"The Five Great Sects