The Sun Sovereign had always been a rather steady Ancient Monarch. Now, over a dozen years had passed, his cultivation had gradually recovered, and his majesty far surpassed that of the past. He spoke in a deep voice, "Xia Xuan is correct. The Tenth Emperor's Pass was not built by just one ancient Great Emperor; it is one of the Nine Immortal Heavenly Passes. Even if the alien race's four ancient Great Emperors wanted to breach it, it would be extremely difficult. Why was it breached?"
The words of the Sun Sovereign, the former invincible Twin Sovereign and the great disciple of the Supreme Saint Emperor, were clearly very persuasive, causing the other Ancient Monarchs to nod slightly.
The Tenth Emperor's Pass had always been the most important line of defense guarding the borders of the Sealed Boundary Universe. Even if an ancient Great Emperor came, breaching it would be extremely difficult. After all, it was jointly built by several ancient Great Emperors back then; how could it be so simple?
Moreover, upon the Tenth Emperor's Pass stood a Human Sovereign Pagoda, the supreme imperial weapon of the Primordial Human Sovereign, as well as the Realm Pagoda of the Time-Space Great Emperor and a Primordial Emperor Realm. These three empowered the Tenth Emperor's Pass.
At this moment, the Sovereign of Formlessness finally spoke, his words causing everyone to tremble violently three times: "For the alien race to dare attack and ultimately breach the Tenth Emperor's Pass, they must have sufficient means. Perhaps it's not just the four ancient Great Emperors on the surface; there might be an Emperor Sovereign, a supreme Emperor, secretly making a move. Moreover, the existence suppressed in the Prison of Heaven's Confinement has also begun to impact it."
Everyone's expressions changed. It wouldn't be terrifying if several ancient Great Emperors of the alien race attacked; the most terrifying would be an Emperor Sovereign making a move.
The Emperor Sovereign was a titan among Emperors, far surpassing Supreme Ones, hailed as invincible within the Chaos Sea. Once such a titan made a move, even the Tenth Emperor's Pass, this Immortal Heavenly Pass, would likely be unable to withstand it.
And equally terrifying was the dreadful existence imprisoned in the Prison of Heaven's Confinement. Back then, it was jointly sealed by the mythical Emperors of the Sealed Boundary Universe, a supreme existence not the slightest bit inferior to an Emperor Sovereign, a peerless Supreme One. Once it emerged, the calamity would undoubtedly be boundless.
The Sun Sovereign said, "Although the current Human Sovereign is powerful, he is ultimately in a state of Samsara. My master mentioned that he has been undergoing Samsara life after life, and even in this life, he has not reached Great Perfection. Even if he is not inferior to a Supreme One, he cannot attend to other matters; he cannot split his attention between two places."
After these words fell, the human Sovereigns present all wore grave expressions. The Tenth Emperor's Pass had been captured. If the supreme titan in the Prison of Heaven's Confinement also emerged, undoubtedly, the Supreme Human Sovereign would be unable to attend to other matters, and the Sealed Boundary Universe would face an infinite calamity.
The Ancient Monarch of the Immortal-Slaying Imperial Clan couldn't help but ask, "What about the ancient Great Emperors of our Sealed Boundary Universe? Are any still present?"
The Sun Sovereign shook his head. "The ancient Great Emperors of our Sealed Boundary Universe have long since left the Sealed Boundary Universe. They are each walking their own paths and have not yet reached the suitable time to return. Otherwise, the Alien Ancient Universe would have to show some restraint when wanting to invade our Sealed Boundary Universe."
Hearing this, the expressions of the human Sovereigns grew even heavier. The ancient Great Emperors belonging to the Sealed Boundary Universe were not present; they were walking the paths of the myriad heavens, unseen, secretly planning great schemes. On the surface, only the Supreme Human Sovereign was suspected to be the Samsara Great Emperor from the Mythical Era, undergoing Samsara reincarnation life after life, possessing Supreme combat power.
But ultimately, there was only one person; the few could not withstand the many.
Could it be that the Sealed Boundary Universe would once again fall into the hands of the Alien Ancient Universe, repeating the past, reenacting the tragedy of the Great Mythical Destruction?
This made the human Ancient Monarchs present clench their fists, a sense of paleness washing over them, unwilling to see that scene unfold.
"The situation is not that severe yet. Back then, the Alien Ancient Universe made an agreement with the Primordial Immortal Realm not to easily deploy ancient Great Emperors to attack, otherwise they would face intervention from the immortals of the Primordial Immortal Realm."
The Ancient Monarch of the Immortal-Slaying Imperial Clan spoke, mentioning an ancient agreement involving the events of the Great Mythical Destruction.
Back during the Great Mythical Destruction of the Sealed Boundary Universe, the alien race advanced unimpeded, but in the end, the Primordial Immortal Realm dispatched troops to aid, with supreme immortals and titan Immortal Kings going to war to rescue the Sealed Boundary Universe.
Because of that incident, ever since, the Alien Ancient Universe not only withdrew from the Sealed Boundary Universe but also no longer manifested ancient Great Emperors in the world to attack the Sealed Boundary Universe. Otherwise, with the terrifying foundation the alien race possessed back then to crush and destroy the Sealed Boundary Universe, how could they have allowed the Sealed Boundary Universe to survive to this era?
However, starting this era, the alien race seemed intent on breaking this agreement. The Dark Heaven Great Emperor appeared, personally making a move, and even summoned three Dark Great Emperors standing proudly upon the River of Time.
Yet, not long ago, after breaching the Tenth Emperor's Pass, the alien race ultimately remained extremely wary of the original agreement. In the end, the Emperor-level Supreme Ones withdrew, leaving only the most powerful alien Monarchs leading billions of troops to break through the pass and charge in, directly facing the other nine Emperor's Passes.
But the other nine Emperor's Passes were far less stable than the Tenth Emperor's Pass, this Immortal Heavenly Pass. They were merely left behind by Monarchs of the past and might not be able to hold for long.
After a long silence, the Sovereign of Formlessness said, "Perhaps I should return to the Sealed Boundary Universe once."
The other Ancient Monarchs were not overly surprised, as they had already guessed. The Sealed Boundary Universe was about to face the calamity of an alien race invasion. The Sovereign of Formlessness, as a peerless Supreme One and with his identity as a human Supreme One, would inevitably have to return to join the Supreme Human Sovereign in stopping the invasion of the Alien Ancient Universe.
"Let us return as well," said the Sword Heaven Sovereign.
"Yes, we indeed should return."
"I agree too!"
The other human Ancient Monarchs all voiced their agreement, proposing to return together. The Sealed Boundary Universe was facing a calamity; as members of the Sealed Boundary Universe, how could they stand idly by? They must return together to stop the invasion of the Alien Ancient Universe and fight for it.
"Returning to the Sealed Boundary Universe is possible, but if we all return, who will guard the Ten Heavenly Realms Ancient Domain?"
The Sword Heaven Sovereign suddenly spoke, and the imperial hall fell into silence once more.
It must be known that the human race had just established dominance over the Ten Heavenly Realms Ancient Domain, with myriad races coming to pay homage, and Ancient Monarchs doing the same. Once they left, the human race would become a coveted prize; likely, the myriad heaven imperial clans and immortal clans would set their sights on it.
Especially the Fallen Heaven Mausoleum, which was enough to drive even Ancient Monarchs to madness.
The Sovereign of Formlessness said, "All of you stay. I alone will return."
"Master, I will return with you," said the Monarch of No World.
Other Ancient Monarchs also wanted to speak up and follow back, but the Sovereign of Formlessness stopped them all, saying, "All of you stay. Once everyone leaves, the human race will be too weak. These imperial clans and immortal clans might not submit, and there's also the Fallen Heaven Mausoleum, which will inevitably become a coveted prize in their eyes. Someone must stay to guard it."
The Sun Sovereign said, "Wuxiang, the Sealed Boundary Universe cannot be too weak in strength either. How about this: leave three Sovereigns here, and everyone else returns to the Sealed Boundary Universe to fight."
The Sovereign of Formlessness glanced at the other Ancient Monarchs, who all agreed with the Sun Sovereign.
"I will stay," said the Sun Sovereign, surprising many, but he continued, "I am in a recovery period. Within a hundred years, I can return to my peak state from back then. Moreover, I have already recovered most of it now; even if some major problems arise, I can handle them. But No World is already a Monarch, an important force against the Alien Ancient Universe; he must return."
These words made the Ancient Monarchs nod. The Sun Sovereign was not afraid of death; it was the correct choice. Although he had not yet recovered his Monarch combat power from his peak period back then, he was still among the best of the Ancient Monarchs. Within a hundred years, he could become a Monarch, not inferior to the Monarch of No World, capable of intimidating the other imperial clans and immortal clans.
Currently, having the Monarch of No World, who possessed Monarch combat power, return to the Sealed Boundary Universe was the best choice, sufficient to deal with multiple Ancient Monarchs, far more important than the Sun Sovereign.
"I will stay too!" said the Heaven-Penetrating Sovereign. Strictly speaking, he was not a true human Sovereign, merely on the human side.
Finally, the Sword Heaven Sovereign was also chosen to stay. Although this sharp-tempered Ye Clan Sovereign strictly demanded to return to the Sealed Boundary Universe, he was unanimously decided by the Ancient Monarchs to remain in the Ten Heavenly Realms Ancient Domain.
"Although only three Sovereigns remain, it may not be enough to protect the Fallen Heaven Mausoleum, but I have left a contingency measure beyond the heavens. Although it still needs ten years to gestate, once our human race reaches the final extremity, you can directly enter beyond the heavens to activate it. Even if a true Supreme One comes, it can hold them off for a while."
The other nine Sovereigns were shocked, but considering the Supreme One status of the Sovereign of Formlessness and the great tribulation fluctuations that shook the myriad heavens not long ago, the contingency measure he left behind was certainly no ordinary means.
Finally, the Sovereign of Formlessness said, "Before leaving, I will do some things and also announce to the outside that I am continuing my seclusion. Although it might not be concealed for long, as long as they are uncertain for a day, it will be enough to continue intimidating them for a period. I hope this time allows Brother Sun to recover more."
The Sun Sovereign nodded. Once he fully recovered, even if not as heaven-defying as the Sovereign of Formlessness, one must not forget that back then, combined with the Night Sovereign, he was not the slightest bit inferior to the Sovereign of Formlessness. Among Monarchs, he was also a top-tier powerhouse, sufficient to hold the fort for the human race in the Ten Heavenly Realms Ancient Domain.
Moreover, in an absolute emergency, they could activate the Supreme contingency measure left beyond the heavens.
And more importantly, the human race was not without other external aid. There was still the Mythical Imperial Domain, and even a Golden Crow Great Emperor far away on the Path of Origins.
A major meeting concerning the fate of the human race was thus completed within the Qin Clan's imperial hall.
Outside, others were unaware, but the myriad heaven imperial clans, immortal clans, king clans, and countless other forces were closely watching every move of the human race. They all believed the human race could not remain inactive. Even the Sovereign of Formlessness, as a Supreme One, would inevitably return to the Sealed Boundary Universe to resist the invasion of the Alien Ancient Universe.
Once that day arrived, with the Supreme One absent, even the presence of the Monarch of No World would be insufficient to intimidate the myriad heavens. They would inevitably seize the opportunity to make a move and contend for the Fallen Heaven Mausoleum, this supreme land of fortune.
It was believed that even the other Ancient Monarchs or forces of the Ten Heavenly Realms Ancient Domain would be unable to hold back, inevitably taking a share of the spoils. By then, no matter how powerful the human race was, they could not withstand the encirclement and suppression by the myriad heaven forces.
Moreover, once they left the Ten Heavenly Realms Ancient Domain, even a true Supreme One could not enter. There were immense rule restrictions here, as well as imprints of the myriad heaven Supreme Ones. Only someone like the Sovereign of Formlessness could enter from a neighboring path.
However, the location of the Ten Heavenly Realms Ancient Domain was too mysterious; even Supreme Ones could not find it, shielding all divination.
Thus, everyone awaited the arrival of that moment.
All eyes were upon it!