Whether it was the Heavenly Demon Blood-Transforming Divine Blade or the Blood Sea Divine Infant Sword, refining either to the eighth-tier upper grade would require creating boundless blood karma.
Even if the humans of several hundred major worlds were all sacrificed in blood, they might not be enough to forge a demonic sword so earth-shattering.
At this thought, Chen Nianzhi's heart sank slightly.
Judging from these two swords, the humans throughout the Nether Abyss Purgatory Sea likely lived in an endless purgatory.
"Purgatory Sea, Purgatory Sea..."
"That Nether Abyss Purgatory Sea truly deserved to be called the purgatory of the Immortal Realm."
A chill ran through Chen Nianzhi's heart, and faint killing intent surfaced in his eyes.
Though he had murderous intentions, Chen Nianzhi did not strike immediately. He continued to activate the formation to hold them off, and before he knew it, time slipped rapidly away.
The formation here had been hastily arranged by Chen Nianzhi, and his preparations had not been sufficient. He had yet to gain full control of the interwoven blessed land, so its power was not particularly great.
The demon drove three upper-grade Heaven-Opening demonic treasures in a relentless assault. After attacking for several dozen days, he finally broke through the crude formation.
Yet at that very instant, before the demon could show any delight, the six of them struck at once.
In an instant, Qing Ji's Five Dragons Wheel, Jiang Linglong's Profound Yin Heaven-Slaying Sword, Yan Ziji's Profound Yang Heaven-Burying Saber, and Yan Ziji's Seven Absolutes Spirit-Slaying Sword all cleaved forth, slashing toward the Old Devil's head.
"Not good."
The Old Devil was startled. He immediately activated his three demonic weapons to block the attack, then waved his sleeve and raised a Black Baleful Demon Cauldron, also an upper-grade defensive Heaven-Opening demonic treasure.
But