Demon Emperor Yudis, accompanied by twelve eighth-rank demon lords, surrounded the Thunder Spirit Giant elder. They watched the Thunder Spirit Giant with wary eyes.

Just as this Great Ascension Realm elder of the Thunder Spirit Giant race stood confused, the Big Dipper constellation in the sky suddenly blazed brilliantly! Seven radiant stars projected their light downward, falling upon the Thunder Spirit Giant's body. The Thunder Spirit Giant's aura abruptly surged!

Though the increase was minuscule, it was clearly a beneficial effect. The Thunder Spirit Giant elder grew even more bewildered.

In the sky, starlight condensed into a three-headed, three-faced figure as Su Yuan's voice resounded: "I am the Seven Stars Dao Lord! Those who sincerely believe in me shall receive the gift of eternal life! Those who slander and revile shall be deemed heretics! I bestow upon you the Thunder Envoy to bring your destruction!"

After these words, the three-headed, six-armed starlight figure transformed into dense starlight that all converged upon the Thunder Spirit Giant elder. As a result, the Thunder Spirit Giant's body shone even more brilliantly!

By now, the Thunder Spirit Giant elder had realized something. His expression changed as he looked toward the heavens, but the phantom figure had already vanished, leaving only the Big Dipper constellation in the sky, still shining upon him and providing negligible power support.

"Wait, everyone, I have something to say! I'm not any so-called Thunder Envoy! We mustn't be fooled by that bastard!" The Thunder Spirit Giant immediately sent a mental message to the thirteen demonic cultivators around him.

Mental communication could convey general meaning even across language barriers. He believed they wouldn't be so foolish as to fall for such an obvious trick.

However, the Thunder Spirit Giant's attempt failed. Upon hearing the beginning of the message, Demon Emperor Yudis immediately blocked the elder's consciousness from entering his mind. Instead, he warned the twelve demon lords: "Don't listen to his mental message! Who knows if this otherworldly being's abilities can affect us through speech alone!"

"Understood, Demon Emperor! This Thunder Envoy is too powerful! We must go all out against him!"

Another demon lord complained: "I told you we shouldn't have offended deities from other realms! If worst comes to worst, we should submit to this Seven Stars Dao Lord. There's no harm in worshipping him!"

A nearby demon lord immediately objected: "Mandala, are you an idiot? With a powerful enemy before us, you dare shake morale? After this battle, you'll answer for this crime!"

Demon Emperor Yudis shouted: "Enough arguing! First we defeat this Thunder Envoy! In the demon realm, strength is all that matters. If we can't defeat this envoy, there won't be any 'afterwards' to discuss!"

At his words, demon lords of all opinions nodded in agreement. Their gazes toward the Thunder Spirit Giant elder grew increasingly hostile.

Frowning at the escalating tension, the Thunder Spirit Giant realized he had no choice but to fight. "Where is this place? Why is there so much demonic energy? The concentration... this doesn't seem like the Demon Realm, but rather a mortal world beneath it... Damn it, there's no spiritual energy here to replenish my consumption. I can't drag this out, or the situation will turn dire."

Though wary of the enemy who had transported him here, the elder remained calm. If his opponent could easily kill him, they would have done so already—why bother moving him here? Perhaps they could only manage this teleportation technique and nothing more! There was still hope!

"True Demon Subjugation Formation! Activate!"

From twelve city gates of the imperial capital, towering demonic energy rose, coalescing into twelve super demonic effigies each a kilometer tall! The twelve demon lords stepped forward, merging with the effigies to control the formation's nodes.

A massive formation activated instantly, bringing tremendous pressure down upon the Thunder Spirit Giant elder. His originally powerful aura was abruptly suppressed as the surroundings transformed—the imperial city vanished, replaced by a sea of black flames!

Before the elder could react, countless flaming meteors descended from the sky, hurtling toward him!

"Seeking death!" The Thunder Spirit Giant elder raged. He had hoped to avoid fighting through discussion, but these demonic cultivators had struck first! Were they fools? Didn't they understand the principle of the snipe and clam fighting only for the fisherman's gain?

A giant hammer appeared in the elder's hand. Swinging it skyward, hammer shadows transformed into a thunderstorm that surged upward! The collision between demonic fire meteors and thunderstorm within the formation space created shockwaves spanning tens of thousands of miles!

This violent battle far surpassed Su Yuan's previous "minor skirmish" in scale. Watching from high above, Su Yuan marveled at the terrifying spectacle below. "Impressive! This Thunder Giant is incredibly strong!"

Su Yuan noticed continuous flashes of teleportation light elsewhere in the imperial city. Streams of demonic cultivators emerged, including many seventh and eighth-rank practitioners! Under the human emperor's direction, they swiftly joined the True Demon Subjugation Formation, visibly multiplying its power severalfold!

"They're gathering all of Black Demon Realm's strongest experts for a life-or-death battle against this celestial being!" The scene felt eerily familiar to Su Yuan, reminding him of Old Qian's words about immortal envoys attempting to destroy the Tianyuan Realm... Wasn't this the same scenario? Su Yuan rubbed his head sheepishly—had he accidentally become what he despised most?

Within the formation, the Thunder Spirit Giant elder wreaked havoc. His thunder hammer seemed to contain an ocean of lightning—each strike dealt significant damage to the formation! Demon cultivators' bodies began rupturing;

those below seventh-rank could only endure momentarily before needing replacement.

Twenty-seven eighth-rank demon lords had gathered—nearly all in the Black Demon Realm! Even with the formation's assistance, they could only barely maintain a stalemate against the single Thunder Spirit Giant elder.

"Hold on, everyone!" the Demon Emperor shouted. "He comes from another realm, using spiritual energy! There's none here to replenish him—victory will be ours!" The twenty-seven demon lords nodded solemnly.

The Thunder Spirit Giant elder roared in frustration: "Fools! Stop fighting! If this continues, I won't hold back!" But with no shared language and his mental messages ignored, his fury mounted.

The Demon Emperor interpreted differently: "He's cursing us—our attacks are working!" Enraged, the elder laughed bitterly: "Stupid lower realm barbarians! Then witness the might of immortal techniques!"

He bellowed, summoning the Thunder Law to manifest. Countless lightning bolts descended from the heavens, converging on his body. In an instant, he grew dozens of miles tall—the Dharma Aspect manifestation!

"Take this hammer!" The now-colossal elder brought his equally enlarged hammer crashing down. A streak of lightning split the sky as the hammer struck the formation.

BOOM!

Destructive thunderpower tore through the formation, ravaging the imperial city. Buildings crumbled to dust;

countless demonic cultivators perished instantly, their screams cut short as they turned to ash. Even the surrounding demonic energy was obliterated—the entire imperial city vanished, replaced by a thunder-scorched wasteland.

The formation shattered. Hundreds of thousands of demonic cultivators died, their demon infants and nascent souls incinerated by the residual thunderforce, transforming into pure demonic energy that dispersed, then converted into spiritual energy under the lightning's power.

The Thunder Spirit Giant elder inhaled deeply, absorbing the spiritual energy converted from his victims' remains to replenish his depleted reserves.

The twenty-seven surviving eighth-rank demon lords escaped in disarray, all wounded, staring in horror at the elder who had returned to normal size. Though the formation's remnant flames distorted the air with heat, icy dread filled their hearts.

The elder snorted coldly: "Now you know my power? Don't provoke me!" He turned to leave, seeking a way home.

Watching him go amidst the ruins of his capital and countless dead, the Demon Emperor shouted: "Don't be fooled! That was his desperate final attack—now's our chance! If we let him recover, the Black Demon Realm is doomed!"

The demon lords' expressions hardened. "We fight!" they chorused.

The Demon Emperor charged forward, his demonic blade radiating terrifying bloodlight—condensed from the resentment of billions of dead souls, a truly malevolent weapon!

The Thunder Spirit Giant elder turned, swinging his hammer to meet the blade. CLANG! Their collision split earth and sky for hundreds of miles.

The Demon Emperor's eyes lit up: "He blocked it! He's weakened!" Indeed, the elder looked strained—not yet immortal realm, he couldn't quickly reuse such techniques.

"Damn it!" As the Demon Emperor pressed the attack, the other twenty-seven demon lords struck simultaneously. The elder dodged some attacks, withstood others harmlessly, but several soul-based attacks rattled his consciousness.

Shaking his head irritably, the elder revealed his weakness. A demon lord exclaimed: "His soul is vulnerable! His physical defense is strong, but not his spiritual defense!"