"But Immortal King Witherfrost had already become a Demon Immortal, so his strength had increased greatly."
"Then do you think Immortal King Ni Luan broke through to become an Invincible Immortal King because he also became a Demon Immortal?"
Star Feather Immortal King gazed toward Hidden Abyss Hall from afar and asked.
"We absolutely cannot let him harm the Young Alliance Leader!"
"Activate the Absolute Defense Formation."
Immortal King Canglan looked at Immortal King Tuotian, Star Feather Immortal King, and Immortal King Shen Xu before speaking in a deep voice.
The Absolute Defense Formation was a grand formation jointly arranged by Gu Zang, the Immortal King, and three ninth-rank formation masters. Once activated, even a Half-Immortal Emperor would need an extremely long time to breach it completely.
However, activating this formation came with a problem: once it was activated, the Ancient Alliance's spatial coordinates would be fully exposed.
Originally, this was not much of a problem. After all, if they had reached the point of needing to activate the Absolute Defense Formation, this Ancient Alliance branch would already have been exposed.
Activating the formation and exposing their coordinates was actually meant to send a message to the other Ancient Alliance members.
But the problem now was that this stronghold had not been discovered by the Celestial Court. Activating the Absolute Defense Formation might trap Immortal King Ni Luan, but it would also completely expose the Ancient Alliance branch.
"It's already too late!"
"Immortal King Ni Luan's aura has disappeared!"
Immortal King Tuotian spoke with a heavy sigh.
Immortal King Canglan and the others saw Hidden Abyss Hall shatter in an instant. A black mass tore through the void, carrying Immortal King Witherfrost away through the air.
Immortal King Canglan and the others hurried toward Hidden Abyss Hall. They saw Gu