On the Tenth Emperor's Pass, the various powerhouses of the Sealed Boundary Universe were on high alert, including the Seven Ancient Monarchs, all of whom wore expressions of extreme gravity.
There was no other reason than the presence before them of a true ancient Great Emperor!
At this moment, a human Ancient Monarch spoke solemnly, "There is no need for excessive worry. Even if the Dark Heaven Emperor has come, he cannot breach the Tenth Emperor's Pass."
Regarding the Tenth Emperor's Pass, they possessed absolute confidence, for it had been personally constructed by more than one ancient Great Emperor. It was incomparably solid; who in this world could breach it?
"I recall the past, when our Realm's Ancient Universe roamed the Chaos Sea, directly breaking through the Sealed Boundary Universe, advancing unhindered, striking straight at the heart, slaughtering countless races of the Sealed Boundary Universe, shattering this chaotic ancient universe until it was broken and dilapidated, its glory lost, falling into decline and forced to seal itself."
"Today, this Emperor shall once again tread upon this old land, recalling those glorious years of yore. This day, I shall restore that former splendor and once more trample this Sealed Boundary Universe beneath my feet!"
The Dark Heaven Emperor looked down upon the Tenth Emperor's Pass, his voice shaking through the ages and myriad realms, trembling the river of time, carrying an unparalleled, disdainful might that looked down upon all heavens.
Boom—
His Emperor's body instantly grew incomparably vast, reaching the height of the heavens, not the slightest bit inferior to the Tenth Emperor's Pass. Even a great domain would appear tiny before it.
Moreover, his Supreme Emperor's Might was boundless in this era. Even with the isolation of the Tenth Emperor's Pass, the Seven Ancient Monarchs of the Sealed Boundary side could still feel that infinite oppressive might, their expressions all changing.
Those below the Ancient Monarchs were even more terrified, their hearts pounding. The many Heavenly Kings felt their bodies go weak, some even fainting on the spot.
"Today, I, the Dark Heaven Emperor, shall personally experience whether the so-called Tenth Emperor's Pass left behind by the legendary Emperors of the Sealed Boundary is truly indestructible!"
His Emperor's Might was boundless, shaking the vast skies of eternity. The Dark Heaven Emperor displayed infinite Emperor Dao power. With merely a simple extension of a hand, it transformed in the blink of an eye into a palm spanning billions of miles, far vaster than a star domain, capable of covering a great domain of billions of miles. To say it could blot out the heavens with a single hand would be a gross understatement.
Moreover, the Emperor's hand was wreathed in the most terrifying Supreme Emperor Laws, carrying an aura that could crush all ages and annihilate everything, surpassing that of an Ancient Monarch by an immeasurable degree.
The true might of the Emperor Dao!
Boom—
The Emperor's hand struck the Tenth Emperor's Pass. No Emperor Dao divine abilities were visibly employed, yet with just this simple slap, the boundless Chaos Sea seemed to explode, and the entire Tenth Emperor's Pass shook violently, causing the Seven Ancient Monarchs of the Sealed Boundary Universe to pale.
Hum—
The Tenth Emperor's Pass radiated with Emperor light, dissolving this strike and neutralizing all Emperor Dao impact. Otherwise, under such an ancient Emperor's attack, even the Seven Ancient Monarchs would have been affected and injured.
"Oh?"
The Dark Heaven Emperor uttered a sound of surprise. "The Tenth Emperor's Pass is indeed somewhat extraordinary, actually withstanding this Emperor's strike. Otherwise, even a Monarch standing here would have been blasted apart."
The Seven Ancient Monarchs shuddered. This was a true ancient Great Emperor. A simple strike, one that even a Monarch—who claimed to have one foot stepped into the Supreme realm—could hardly withstand, would be blasted apart. He was powerful beyond measure.
"Eternal Dark Day!"
At this moment, the Dark Heaven Emperor also grew slightly more solemn, unleashing a world-shaking Emperor Dao divine ability. Boundless dark power assaulted the Tenth Emperor's Pass, carrying endless, rolling Supreme Emperor power that tore through time, unimaginably terrifying.
Even a Monarch, under this strike, would be utterly annihilated, for this was a true ancient Emperor's attack, a terror far beyond imagination, heavily bombarding the Tenth Emperor's Pass.
The Tenth Emperor's Pass shook violently, streaks of Emperor light radiating forth, continuously reinforcing it, only then gradually managing to withstand it.
This was the Tenth Emperor's Pass. Even if a true ancient Great Emperor came to assault it, it would not yield. It had been jointly constructed by several ancient Great Emperors in the past, an extraordinary, indestructible fortification.
The Dark Heaven Emperor continued his assault. A Supreme Emperor weapon even appeared, awakening together, continuously bombarding the Tenth Emperor's Pass. That terrifying destructive power, capable of burying epochs, continuously boiled and flashed, causing the Tenth Emperor's Pass to shake unceasingly. The Seven Ancient Monarchs upon the pass repeatedly changed expressions.
However, they also breathed a sigh of relief. The Tenth Emperor's Pass had ultimately withstood it. Moreover, it could continuously absorb the chaotic ancient qi of the Chaos Sea, converting it into energy. Therefore, even the Dark Heaven Emperor, possessing boundless might, found it difficult here to truly deplete the Emperor power of the Tenth Emperor's Pass and conquer it.
"I never expected this Tenth Emperor's Pass to indeed be a tough nut to crack, somewhat beyond this Emperor's expectations."
Even the Dark Heaven Emperor had to admit the indestructibility of the Tenth Emperor's Pass, frowning slightly.
Though they were enemies, he had to acknowledge that the Tenth Emperor's Pass was something a single ancient Great Emperor like him could not breach.
"However, the time left for us is not much. Even if it means violating some agreements, we must act, strike straight at the heart, and seize that most crucial 'key'." The Dark Heaven Emperor said, his gaze instantly turning many times colder. His Emperor's body remained immeasurably vast, towering into the clouds, unimaginably huge, plunging into the Chaos Sea, revealing his true form.
It was an unprecedented beastly body, somewhat humanoid in shape but covered in endless darkness, as if born from the darkness itself.
Simultaneously, a vast, wide river appeared, surging endlessly, spanning the Chaos Sea.
It was none other than the River of Time!
Visible to the naked eye, upon the River of Time, there were several supremely powerful dark figures. Behind each of them stood towering dark silhouettes as majestic as the Dark Heaven Emperor, none humanoid. They seemed like several supreme, peerless Dark Emperors, striding along the River of Time, coming from the past, appearing in this era, all possessing boundless Emperor's Might, manifesting before the Tenth Emperor's Pass.
"Ancient Great Emperors from the past!?"
On the Tenth Emperor's Pass, let alone others, even the Seven Ancient Monarchs were greatly shaken.
Not just one Dark Heaven Emperor, but several ancient Great Emperors had appeared. Moreover, judging by the situation, they were clearly ancient Great Emperors from the past, numbering as many as three.
However, what left the powerhouses of the Sealed Boundary Universe both horrified and puzzled was why the Dark Heaven Emperor would summon three Dark Emperors from the past, rather than directly inviting other ancient Great Emperors from the Chaos Ancient Universe.
It must be known that for beings not of this spacetime, even supreme beings like Emperors or peerless immortals would have to pay a tremendous price to act recklessly. The Tenth Emperor's Pass involved more than one ancient Great Emperor, making the karmic forces even greater.
Doing so was undoubtedly not worth the cost.
The three Dark Emperors, treading upon the River of Time from the past, nodded towards the Dark Heaven Emperor. "You in this era should also know the immense price we paid to arrive in this era. After all, we are not of this era, and there is also that one who blocks the path of all heavens and epochs."
When mentioning that person, even the three Dark Emperors revealed deep apprehension.
The Dark Heaven Emperor also showed apprehension, even a flicker of reverence, but it quickly vanished. "Although that one severed the ages, cutting off various epochs, the giants of our Realm's Ancient Universe also acted. Otherwise, how could you all have come?"
"Indeed!" The three Dark Emperors nodded, then said, "But coming this time will still incur a tremendous price. Your alien race must not forget."
"Three Fellow Daoists, I understand." The Dark Heaven Emperor said. "I trouble the three of you."
"We are of the same kind. Summoning us from the past is inherently an act defying the heavens, violating the rules of the Chaos Sea, requiring a correspondingly huge price. However, with the promise spoken by that existence within your Ancient Universe, we are naturally willing to act."
The Dark Heaven Emperor nodded. "It is a pity the Emperor Sovereigns of our Realm's Ancient Universe cannot easily leave. Even my departure violates the agreement. But for the plan to proceed smoothly, it cannot be helped. Please rest assured, once the plan is completed, our Realm's Ancient Universe will certainly act."
"Good!"
The four ancient Great Emperors nodded to each other, exchanging words outsiders could not comprehend. However, everyone knew that ancient Great Emperors would not rashly speak useless nonsense; the meaning behind their words must be of great significance.
"With four ancient Great Emperors acting, even if the other three likely cannot exert their full power, we must be prepared. This time, the Tenth Emperor's Pass might truly be breached!"
On the Tenth Emperor's Pass, the Seven Ancient Monarchs all wore solemn, grave expressions, their essence, energy, and spirit rising to the utmost limit, their Sovereign heavenly might erupting in full.
Simultaneously, the Human Emperor Tower autonomously awakened, radiating Supreme Emperor's Might.
Within the world of the Tenth Emperor's Pass, the eternally indestructible World Tower also swayed, as if infinite world power surged forth, reinforcing the Tenth Emperor's Pass.
"Breach the Emperor's Pass, seize the 'key' directly!"
The Dark Heaven Emperor spoke coldly. Together with the three Dark Emperors from the past, all stood before the Tenth Emperor's Pass. Four of the most terrifying Supreme Emperor's Mights suddenly erupted, shaking all heavens and myriad domains, surging through the Chaos Sea, directly targeting the Tenth Emperor's Pass for an assault...
On this day, a world-shaking piece of news that shook the entire Chaos Sea spread.
Even the various Emperor Clans and Immortal Clans in the world of the Ten Heavens Ancient Domain, located in an unknown place far away, learned of it through certain channels.
"The indestructible Tenth Emperor's Pass at the border of the Sealed Boundary Universe has been breached! Alien ancient Great Emperors have acted, more than one! A billion-strong army advances unhindered. The Tenfold Emperor Passes are mountains of corpses and seas of blood, soon to be conquered. The infinite cosmic territories of all heavens and myriad domains are about to be plunged into misery and suffering!"
The various Emperor Clans and Immortal Clans all looked towards the human race's direction.
For the Sealed Boundary Universe was the homeland ancient universe of the human race!
Similarly, the human race naturally received this news. Even the most steady old fossils, even the lofty, time-defying Ancient Monarchs, revealed unprecedented horror.
The heavens had changed!
After an interval of an entire epoch era, the alien Ancient Universe had once again launched an invasion war against the Sealed Boundary Universe and had breached the most solid Tenth Emperor's Pass, advancing unhindered.
The Sealed Boundary Universe was in peril!