Chapter 748: The Power of the Netherworld Heart Demon Thunder
The sudden scene in the sky stunned everyone present. It took a long moment before the crowd finally regained their senses.
Yet the first thing most focused on was the purple jade scroll now crushed in Mo Yu's hand.
That scroll symbolized the Ziyun Sect. For years, none had dared reject one of their invitations—let alone destroy it publicly. Breaking it was regarded as grave disrespect to the Ziyun Sect, an act that invited monumental calamity.
"The Prison Lord actually crushed the Ziyun Jade Scroll?"
"Sigh, too arrogant… doesn't know how to restrain himself. Now that the scroll's destroyed, he's provoked disaster!" cried one Thunder Prison expert in despair.
"Far too impulsive!" many muttered, faces grim. The act was satisfying, yes—but the wrath of the Ziyun Sect was something Thunder Prison could never bear.
"Trouble's upon us. Thunder Prison is doomed; we'd better start planning an escape," someone whispered nervously.
A wave of uneasy murmurs rippled across the plaza. Many Thunder Prison cultivators looked shaken—the Prison Lord's boldness had terrified them.
And even setting the Ziyun Sect aside, the three Upper Earth Sovereigns standing before them were enough to destroy Thunder Prison entirely.
Even Feng Yuanzi and the Snow Valley Mistress, earliest among those to join Mo Yu, wore uneasy expressions. They sighed quietly, knowing this mess would not end well.
As chaos broke out across the plaza, the three elders from the Ziyun Sect came to. The white-haired leader's smile vanished the instant he saw the shattered jade, his eyes glinting with chilling light.
"Hehe, impressive indeed. In all these years, this old man has never seen anyone dare to crush a Ziyun Sect scroll." His voice was soft, venomous; his eyes sharp as blades, locked tightly on Mo Yu.
"Well, you've seen it now."
Mo Yu spoke evenly, brushing the purple dust from his palm. "You have ten breaths. Get out of Thunder Prison."
As he said it, his gaze swept across the fearful faces of his own followers. Those who had shown thoughts of fleeing just now were marked in his heart—men who thought only of saving themselves had no place in Thunder Prison.
At his words, the three elders blinked. Then they burst into laughter that roared like thunder, shaking the entire square.
Onlookers looked at one another in bewilderment. Why wasn't Mo Yu taking these three top-tier Earth Sovereigns seriously at all?
Zhong Cang, Ao Sha, and the others, recalling how Mo Yu had crushed the Ice Pavilion Lord within the Earth Sovereign Secret Realm while still a Lower Earth Sovereign, were far calmer.
Now that Mo Yu himself had reached the Upper stage, even three opponents of equal rank might not be enough to overpower him.
"Imagine that—the mighty Lord of Thunder Prison is but a childish fool, ignorant of his own limits." The white-haired elder shook his head in mock pity. "So be it. Thunder Prison need not exist any longer."
Boom!
As his final word dropped, his robe billowed violently. Boundless spiritual power erupted from within him like a roaring ocean, shaking the square as if the world itself would tear apart.
"Let's start with you, Prison Lord!"
With a grim smile, he stomped forward; his body flashed like a phantom, appearing before Mo Yu in an instant. His palm struck downward, ripping cracks through the air, revealing the terrifying power packed within.
Cries of alarm swept the plaza. The Thunder Prison followers—all terrified—believed their lord was about to be slain on the spot.
The Snow Valley Mistress and others stiffened. Gritting their teeth, they prepared to intervene—but the Feng Emperor waved them down.
"Elder Qing…" they protested, unable to hold back.
But the Feng Emperor only shook his head and focused his sharp gaze on Mo Yu's back. He knew Mo Yu could handle this.
Boom!
Before countless stunned eyes, the white-haired elder's palm struck. But at the last instant, Mo Yu simply lifted his own hand, meeting the blow as casually as swatting a fly.
Thud!
A dull boom echoed through the air as everyone waited to see the result.
And then—they all saw a figure come hurtling backward in total disarray, skidding across the tiles and gouging deep trails in the ground.
The plaza went deathly silent.
For they saw clearly—it was the white-haired elder, Zi Tianbei, sent flying!
Swish!
Dozens of unbelieving gazes turned toward Mo Yu, who remained standing exactly where he was, hand still lifted slightly, unmoving as a mountain.
That fearsome palm strike from moments before hadn't budged him in the least—and its wielder had been flung away instead.
Puh.
Spitting blood, Zi Tianbei staggered to his feet, eyes wide with disbelief as he stared at Mo Yu. In that split instant of contact, he had felt an overwhelming force of pure lightning surge from Mo Yu's hand—the kind of thunderous might that made even an Upper Sovereign tremble in fear.
Only now did he realize—the man before him was no ordinary cultivator.
"Upper Earth Sovereign… at the initial stage!?" Zi Tianbei hissed through clenched teeth.
He had sensed Mo Yu's aura. The youth had only recently broken through to the Upper stage—yet somehow, he had crushed an Upper Sovereign at his peak?
The entire plaza gasped. None could comprehend it. How could an early Upper Sovereign so utterly overwhelm one at the peak?
"This boy is dangerous—attack together!" Zi Tianbei barked harshly, no longer underestimating Mo Yu. Alone, he would be killed.
The two companions beside him nodded grimly, murderous intent rising in their eyes.
Swish!
Before they could act, however, Mo Yu took a single step forward—and the space around him twisted as he appeared before all three in a flash.
"Manifest your Sovereign Bodies!"
Their pupils shrank. Without hesitation they roared the command, spiritual light exploding behind them as immense figures began to form. Whatever Mo Yu was, he was incredibly dangerous—they couldn't afford mercy.
But before their Sovereign Bodies could fully take shape, a black thunder-wreathed hand broke through space itself, piercing their spiritual barriers and pressing gently against their chests.
Boom!
The moment the hand connected, an eerie, ghostly thunderclap howled—not through the air, but through their minds.
Zi Tianbei and his fellows jerked violently, faces paling as their consciousness shattered like glass.
Thud!
Another muffled boom rang out as the three men were hurled backward again, smashing brutally into the plaza's stone pillars.
Trembling, they struggled to stand. Cold sweat poured down their temples as they clutched their chests, wild thoughts surging uncontrollably in their minds. Their spiritual power was slipping beyond control.
"That... that was thunder sound?" gasped one, terror in his voice.
"No—it's the Netherworld Heart Demon Thunder!" Zi Tianbei snarled, his face twisting as he realized it.
A well-versed cultivator, he knew instantly what had struck them. The technique Mo Yu used was none other than the Netherworld Heart Demon Thunder—an infamous power of the ancient era.
Among the countless thunders of heaven and earth, the Netherworld Heart Demon Thunder was uniquely sinister. Its power was not sheer destruction, nor were its attacks purely lightning—it struck through sound.
It ignored almost all defenses, manifesting from within a target's own heart. The "thunder sound" it produced stirred inner demons, disordering the mind and causing the victim's spiritual power to turn against them—sometimes fatally.
It was a maddening, unstoppable assault.
Realizing this, horror spread across the faces of the Ziyun elders as their bodies shuddered, their spirits reeling under its invisible hum.
"Netherworld Heart Demon Thunder?"
Gasps escaped the Thunder Prison members and spectators alike. Their expressions shifted to awe as they turned to Mo Yu.
That technique belonged to one of the ancient Nine Emperors—the Heart Demon Thunder Emperor himself! No one would have believed it could be wielded again after so many ages.
Even the Feng Emperor was stunned. His brows furrowed in thought as he looked closely at Mo Yu. He recalled that Mo Yu had never come in contact with such a technique before entering the Earth Sovereign secret realm.
It seemed the depths of the Thunder Saint's grand hall hid truths linked to none other than the legendary Heart Demon Thunder Emperor himself...
"Retreat!"
In despair, Zi Tianbei and the others, faces ashen, forced what little energy remained and shot toward the sky. Mo Yu's display of power had cowed them completely.
Coldly, Mo Yu watched their fleeing forms, then flickered once—and vanished.
Bang!
As they reached the edge of the plaza, violent thunder roared overhead. In the next instant, all three bodies were thrown crashing back to earth, sprawling helplessly in the square.
"Thunder Prison is not a place one enters—or leaves—at whim," Mo Yu said coldly, his silver eyes glinting icily.
"Lord of Thunder Prison, we… we are only envoys! Even between rival sects, killing messengers brings eternal enmity!"
Zi Tianbei's face was pale; his words trembled. With his spiritual energy spiraling out of control, he looked no different from a frail old man, terrified that a single thought from Mo Yu would end him.
"You didn't sound so humble earlier." Mo Yu's voice was calm, almost amused. Just minutes ago, this same man had strutted in, insolent and smug in Thunder Prison's square.
Zi Tianbei cursed inwardly. How could he have imagined that Thunder Prison's freshly anointed leader possessed such horrifying power? The brief clash had been enough: in mere instants, all three of them had been crushed.
Had he known, even tenfold courage wouldn't have brought him here.
"Th-that was this old fool's blindness," Zi Tianbei said quickly, forcing a grin. "I failed to recognize Lord Thunder Prison's greatness and deserved my punishment."
"You do know when to bow." Mo Yu chuckled, shaking his head at the man's shamelessness.
All around, the Thunder Prison members exhaled in satisfaction. The sight of their lord humiliating those arrogant envoys filled them with fierce pride. In their eyes, Mo Yu's authority was now absolute.
To subdue three Upper Earth Sovereigns in moments—his strength was beyond comprehension.
"Go back," Mo Yu said faintly. "Tell your Ziyun Sect this: Thunder Prison neither seeks trouble nor fears it. But if your sect believes it can trample us at will… then we would be happy to be proven otherwise."
Sweat dripped down Zi Tianbei's forehead as he nodded hastily, not daring to reply otherwise.
"Go."
Mo Yu turned away, uninterested in further exchange. There was no need to finish them off—the thunder echoing in their hearts would leave them weakened for a full year.
Killing them might only invite war with the Ziyun Sect, unwise for a newly founded faction still stabilizing its foundations.
And after such humiliation, even the arrogant Ziyun Sect would think twice before provoking Thunder Prison again.
Their leader was no fool—he wouldn't risk so costly a conflict. The loss would not be worth it.
"Yes, yes—we take our leave."
Zi Tianbei nearly stumbled over his words, retreating with the others as if granted mercy. They figured the thunder's side effects could easily be dispelled by their sect master later.
But as Mo Yu watched them flee in disgrace, the corner of his mouth lifted slightly.
The Netherworld Heart Demon Thunder truly lived up to its legacy as the Heart Demon Thunder Emperor's trademark art—
utterly devastating, as it had crushed three equals in a single breath.
(END CHAPTER)
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