As the crowd spoke, beneath the Western Abyss Dragon King's protection, a ninth-rank ancient warship tore through the void and arrived.
Once it drew near, after charging for a long while, it fired with a thunderous boom, forcibly dimming the light of the Eight Trigrams Grand Formation and instantly reducing its power by thirty percent.
"What a powerful formation."
Seeing this, the Western Abyss Dragon King's eyes flickered with surprise.
The value of a ninth-rank ancient warship surpassed even that of a low-grade innate treasure. A single blast from its World-Destroying Cannon was enough to heavily injure or even kill a Chaos ancient beast.
He had thought it would easily shatter the Eight Trigrams Immortal Formation, yet it had actually withstood the attack.
"It seems borrowing the Nirvana Dragon this time was indeed the right choice."
The Western Abyss Dragon King murmured inwardly. To borrow the Nirvana Dragon, he had not hesitated to promise half the treasures to the Nirvana Dragon Demon Venerable.
At the time, he had been reluctant to do so, but now he was immensely grateful.
If he had attacked on his own, it would likely have taken tens of thousands of years to break the formation, and by then, more than half his strength would have been worn away.
With that thought, the Western Abyss Dragon King continued directing the Nirvana Dragon to attack. The supreme cannon, powerful enough to kill a mid-stage Heavenly Immortal, fired twice more in rapid succession, finally shattering the entire Eight Trigrams Grand Formation.
"Kill—"
In an instant, countless demon immortals erupted in wild joy and rushed headlong into the Guixu Eight Seas.
Fortunately, Chen Nianzhi had long been prepared and had ordered the immortals under his command to withdraw into the Celestial Stars Grand Formation within the Guixu Sea Region.