A Hundredfold Training System Instantly Upgrades 999 Chapter 3011: Indestructible Demon Emperor

Hum!

Right as everyone sensed the transformations across the immortal world's heaven and earth, a horrifying energy surge abruptly erupted from deep within Tianmo Mountain.

Right away...

The pulse-racing surge of demonic energy kept surging upward from Heavenly Demon Mountain.

Within a mere instant, that overwhelming demonic energy shattered the void across 100,000 miles, expanding swiftly outward in every direction like it aimed to swallow the whole Demon Suppression Immortal Territory.

"The ancient seal has vanished, the Ancient Demon Palace has fully emerged, and the immortal world faces another deadly crisis once more. All of you, ready yourselves to battle at full power."

Immortal King Ziqiong fixed his gaze toward Tianmo Mountain, his face turning gravely serious in a flash.

Boom boom boom...

The moment Immortal King Ziqiong's words ended, colossal black silhouettes skyrocketed from Tianmo Mountain's depths.

Every one of these dark figures radiated an aura rivaling a Demon King's, with the leading burly one in black dragon armor gripping a black halberd standing out most.

Immortal King Ziqiong eyed the foremost silhouette, his gaze darkening a bit: "That must be the Black Dragon Demon King. Never thought he'd endure from ancient times."

As Immortal King Ziqiong spoke, everyone's faces grew far graver instantly.

The Black Dragon Demon King, among the top ten demon commanders of the Ancient Demon Palace back in ancient times, boasted unmatched prowess.

During the ancient immortals-demons war, most of the Ancient Demon Palace's ten demon commanders fell or got wounded. Who would've guessed this one lived on.

Immortal King Ziqiong drew a slow, deep breath: "Everyone, the Ancient Demon Palace's power vastly outstrips ours. Let's unite and form the array together."

As one of the ancient-era top ten demon commanders from the Ancient Demon Palace, the Black Dragon Demon King held half-step Demon Emperor might. Dealing with him alone proved incredibly tough.

Let alone

The ancient Demon Kings outnumbered the Immortal Kings from their four major heavenly realms by far.

At present, their only option was relying on the array bequeathed by the ancient Immortal Emperor to fend off the Ancient Demon Palace's assault.

Immortal King Tianhuang and the rest keenly sensed the Ancient Demon Palace's might too, immediately starting to weave hand seals without delay.

In short order.

Nearly dozens of Immortal Kings across the four great heavenly domains acted simultaneously, their fearsome immortal might flooding the skies and swiftly condensing into a Chaos Sky ahead.

This Chaos Sky stretched over the entirety of Zhenmo Immortal Territory, seemingly splitting it apart from Tianmo Mountain into separate realms.

The instant the Chaos Sky materialized, the Black Dragon Demon King showed up beyond it alongside dozens of Ancient Demon Palace Demon Kings.

His gleaming eyes pierced through the Chaos Sky at Immortal King Ziqiong and company, a scornful smirk curling his lips: "The immortal world of this era looks utterly mediocre."

A four-winged Demon King beside the Black Dragon Demon King chuckled softly: "Back in ancient times, to seal our Ancient Demon Palace, the immortal world sacrificed its Fairy Dao origin, crippling the realm's laws. Cultivation turned brutally hard, and producing powerhouses became rare. Today's Immortal Realm likely lacks any Immortal Emperor Realm experts."

"Attack now, crush these fools ahead, seize the immortal world entirely, and turn it into the Ancient Demon Palace's stronghold. This is our final shot—no room for failure."

With the Black Dragon Demon King's command, demonic radiance exploded from his black demonic halberd, slashing straight at the Chaos Sky before him.

"Boom!"

The void trembled violently as dreadful energy waves ravaged millions of miles instantly.

Yet

The array formed by Immortal King Ziqiong and allies channeling collective power from the ancient Immortal Emperor's legacy proved immensely sturdy. Not even the Black Dragon Demon King's halberd could budge the Chaos Sky one bit.

"Hmph! A pathetic array dares halt my Ancient Demon Palace's advance? Everyone, strike together and shatter it for me!"

As the Black Dragon Demon King's voice faded, surging demonic energy poured instantly into the black demonic halberd, unleashing a deafening dragon roar straight from the weapon itself.

The next instant...

A massive black demonic dragon, stretching across thousands of starry miles and carrying heaven-rending, earth-shattering force, crashed fiercely into the chaotic sky.

Meanwhile, dozens of demon kings around him unleashed their attacks in unison, various divine abilities hurtling toward the chaotic sky simultaneously.

Rumbling...

Through the void, explosive energy booms echoed without end, while horrifying energy waves ravaged the emptiness, transforming half the Demon Suppression Immortal Realm's sky into a gaping black hole, as if doomsday had arrived.

However

Though the Black Dragon Demon King and the other ancient demon kings launched mighty assaults, Immortal King Ziqiong and her allies relied on the ancient Immortal Emperor's formation to fend off their onslaught.

For the moment, the Black Dragon Demon King and his forces failed utterly to breach the chaotic sky, unable even to stir the waters.

"Immortal King Ziqiong, demon kings keep emerging from Tianmo Mountain in greater numbers. Even with the ancient immortal formation, I fear it won't hold much longer."

Immortal King Qingcang spoke with a grave look.

The ancient magic palace's power far surpassed the current immortal world's.

Not to mention the demon emperor still hidden in Tianmo Mountain, the Black Dragon Demon King alone proved a formidable challenge for them.

"How long can we hold out? Right now, this ancient immortal formation is our only defense against the ancient magic palace."

Immortal King Ziqiong replied gravely: "If we can stall until that one returns, we might still repel the ancient magic palace."

Immortal King Qingcang and the others were momentarily stunned, glancing at Immortal King Ziqiong: "Immortal King Ziqiong, who exactly do you mean by 'that one'?"

Immortal King Ziqiong answered deliberately: "The descendant of Emperor Qing, a heaven-blessed child of destiny aligned with the immortal path."

Upon hearing this, Immortal King Qingcang and the rest felt their hearts quiver faintly.

Emperor Qing, the peerless Immortal Emperor who dominated the ancient era, stood as an unmatched powerhouse back then.

They never imagined the fabled supreme Immortal Emperor had left a bloodline in this era.

With Emperor Qing's descendant present, they might truly stand a chance against the ancient magic palace.

Boom!

While Immortal King Ziqiong and her group conversed, a tremendous quake suddenly erupted from the Heavenly Demon Mountain they guarded.

Right after, overwhelming demonic aura billowed out from Tianmo Mountain.

Within moments, that demonic energy engulfed the entire sky over Demon Suppression Immortal Territory.

That instant.

Across the whole Demon Suppression Immortal Territory, the crushing weight of that demonic aura made everyone shudder uncontrollably.

Sensing the choking, horrifying demonic might, Immortal King Ziqiong and the others' faces drained of color in shock.

The demon emperor's aura!

The indestructible demon emperor sealed within Tianmo Mountain was on the verge of breaking free.