Jinhai and his companions had just stepped out of the Northern Sky Prison's long, dark passage.
Suddenly, a thunderous roar exploded, shaking the depths of the earth!
Boom-!
The deafening sound surged up from the deepest, eighteenth level of the Northern Sky Prison, heavy and muffled, making the surrounding space tremble.
Several vast, chilling auras tore through layer after layer of the dungeon's restrictions and rolled outward.
They were the formidable pressures of sixth-tier demon cultivators, heavy as mountains and seas, their ferocity reaching the heavens. Mingled among them were several even deeper, more terrifying auras-seventh-tier great demons!
Shuihan's expression changed abruptly, disbelief and horror filling his eyes as he exclaimed in a low voice, "There's a revolt in the Northern Sky Prison!"
Every sixth- and seventh-tier great demon imprisoned in the Northern Sky Prison was either a vicious remnant of the demon race or a condemned demon guilty of heinous crimes.
They had been suppressed here for hundreds of years at the least, some for as long as a millennium. Most of their ferocity had long since been ground away, leaving them to lie quietly in their cages.
Yet now, all these dormant, savage demons had erupted into revolt, as though they had shaken off their shackles and shattered their restraints.
Shuihan was deeply shaken and could not fathom it. Every condemned prisoner here had been subjected to the Prison Slave divine ability personally imposed by the Dragon Monarch and Marquis Changze.
This divine ability held the great demons fast, forever denying them the ability to cause trouble. There should have been no possibility of retaliation or revolt.
How could such an earth-shattering upheaval have suddenly occurred today?
Beside Shuihan, Han Gu's gaze sharpened abruptly, his expression turning grave.
Their party had already left the dungeon's core and reached