Clang—
In an instant, Sword Qi swept across heaven and sea.
Looking up into the void, they saw a world-shaking bolt of thunderous sword force cleave down.
The sword force struck the mountain-guarding formation, instantly sending up enormous ripples and dimming even the Black Dragon World-Suppressing Cauldron's light slightly.
"So powerful."
Chen Nianzhi was shocked. He had truly witnessed the killing might of a half-step Heavenly Immortal wielding a top-grade Heaven-Opening immortal sword.
The Annihilation Thunder God truly lived up to his extraordinary foundations. With the power of this Heaven-Opening treasure sword alone, even ten Earth Immortals at Great Perfection attacking together would likely be slaughtered clean.
Even with Chen Nianzhi's current combat strength, if he faced the Annihilation Thunder God, his only option would be to flee.
Of course, Chen Nianzhi could vaguely tell that although the Annihilation Thunder God's offensive power was overwhelming, his defensive measures were lacking.
He possessed no defensive treasure and had not cultivated a Taiyi Immortal Body, making his physical body exceedingly frail.
Once someone could withstand his attacks, they would likely be able to severely injure him in a very short time.
"Though he obtained the Azure Dragon Ancient Cauldron, it is wood-attributed and conflicts with his lightning laws. At most, he can wield fifty percent of its power."
"His offense exceeds his defense. Once my cultivation advances further, if I face him again, I may be able to find an opportunity to defeat him."
As Chen Nianzhi assessed him inwardly, he drove the Black Dragon Ancient Cauldron to its utmost limit.
But at that moment, the Annihilation Thunder God struck again. A second incomparably dazzling Sword Qi slashed into the formation, making its radiance shudder violently as several faint cracks appeared upon it.
Seeing this, Chen Nianzhi understood that the Black Dragon