"Integrate!"

With a soft chant from Lin Fei, his Illusory Realm, along with the True Immortal-level world law, began to merge.

As this was Lin Fei's first time integrating a True Immortal-level world law, he proceeded with extreme caution and at a very slow pace, gradually incorporating the True Immortal-level world law entirely into his Illusory Realm.

With each integration, Lin Fei's Illusory Realm swiftly expanded and swelled. The Illusory Realm, seemingly an unusual world akin to a dream yet not entirely the same—dreams did not possess the immense power of Lin Fei's Illusory Realm.

However, the speed of integrating the world law into the Illusory Realm was very slow, after all, it was a True Immortal-level world law, distinctly unique.

Lin Fei did not know when he would complete the integration of this True Immortal-level world law, but he was not in a rush—slow integration was acceptable.

Meanwhile, the headquarters of the Dark Demons in the Yin-Yang Immortal Domain, the Dark Demon Domain had now brazenly established its headquarters within the Yin-Yang Immortal Domain and began to issue commands.

At this moment, the atmosphere inside the grand hall of the headquarters was quite tense. The Lord of Dark Demons sat high on his throne, with some Supremes and top-tier Demon Emperors below him.

Generally, only top-tier Demon Emperors and above were qualified to be in this grand hall. At this moment, the Initial Demon Supreme bowed his head and reported in detail to the Lord of Dark Demons about the events of this operation.

"Initial Demon, you mean to say, your carefully planned operation, even involving another Supreme," began the Lord of Dark Demons, his voice growing increasingly louder, his tone incredulous, "yet you failed to capture Lin Fei? And even the seven True Immortals and Martial Ancestors used as bait were all rescued by him?"

The Initial Demon Supreme gritted his teeth, feeling humiliated, but there was no helping it—this was the truth. He dared not hide anything.

"Yes, Your Majesty, I miscalculated this time. I did not anticipate that Lin Fei's strength would be so formidable..."

"Boom."

Before the Initial Demon Supreme could finish speaking, the Lord of Dark Demons furiously waved his hand, slamming a palm down towards him.

Instantly, the Initial Demon Supreme was fiercely struck to the ground. Even the body was shattered.

Of course, it was merely shattered. The Lord of Dark Demons had not dealt a killing blow, thus not obliterating the body of the Initial Demon Supreme.

Even if obliterated, the Initial Demon Supreme would remain unharmed, merely from the pure force or method alone.

After all, fundamentally, the Lord of Dark Demons was also a Supreme, only having gained control over the Dark Demon Domain to become the ruler.

The dominion of the Lord of Dark Demons, too, was Supreme. Although he could not kill the Initial Demon Supreme, all the dark demons in the Dark Demon Domain had left behind their Dark Demon Hearts.

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The Dark Demon Heart was fundamental; the Lord of Dark Demons, who held control over these hearts, thus controlled nearly all the dark demons, including the Supremes.

Should the Lord of Dark Demons truly wish to kill a Supreme of the Dark Demon Domain, it would be straightforward—simply destroy the opponent's Dark Demon Heart in the Dark Demon Domain.

Once the Dark Demon Heart is extinguished, whether a Demon Emperor or a Supreme, they would utterly perish. This was also why, with just a command from the Lord of Dark Demons, he could summon so many Supremes.

"Please, Your Majesty, punish me!" pleaded the Initial Demon Supreme, having regenerated his body, yet he dared not show the slightest discontent. Instead, he sought the punishment of the Lord of Dark Demons.

"Hmph, Initial Demon, I will note this debt against you," the Lord of Dark Demons declared. "If you do not redeem yourself, upon your return to the Dark Demon Domain, I shall personally punish you. But for now, you are spared."

"Thank you, Your Majesty!" said the Initial Demon Supreme respectfully, also sighing in relief. He, too, was a venerable Supreme, yet to be publicly humiliated by the Lord of Dark Demons was indeed a loss of face. Yet, what could he do? He was powerless!

The Lord of Dark Demons' gaze was icy, his mind flickering through various strategies.

"Lin Fei... he cannot be allowed to continue growing! Since the Supremes in the Divine Realm have largely withdrawn by two-thirds, the remaining Supremes, too few to mention, now is the time to take decisive action.

We must strive to conquer the entire Divine Realm soon! Once the Divine Realm is occupied, a mere Lin Fei, even if he becomes a Supreme, what could he change? He cannot alter the overall situation!"

The Lord of Dark Demons also had his plans, in fact, they were already drawn up, and now, he was merely accelerating them. In the original plan, the Supremes of the Divine Realm posed a significant threat and nuisance to the Dark Demon Domain, given their number.

The Lord of Dark Demons could not continue to kill a Supreme at will. Doing so would likely reveal his hidden trump cards. After all, trump cards must be kept hidden to maintain their deterrent power.

But if so many Supremes in the Divine Realm did not leave, the Lord of Dark Demons truly had limited options.

As expected, the Supremes within the Divine Realm had developed differences. Many Supremes hardly cared about the Divine Realm, paying it scant attention. Faced with danger in the Divine Realm, they would rather venture into chaos than desperately fight against the Dark Demon Domain.

The Lord of Dark Demons naturally knew that those Supremes who had left were foolish. Only later would these Supremes realize what they had truly missed by losing the Divine Realm.

However, this was advantageous for the Dark Demon Domain. It meant that the Dark Demon Domain could now fully wage war and invade the Divine Realm.

"Now, I command all Supremes and Demon Emperors to strike together," he decreed. "Lead the vast armies of the Dark Demon Domain and enter the Divine Realm. We aim to completely occupy the entire Divine Realm within a year. Let the Divine Realm become nourishment for our Dark Demon Domain!"

"Yes, Your Majesty!" they responded.

Thus, everyone went down to begin preparations. Once the Dark Demon Domain moved, it would surely shake the heavens and the Divine Realm.

...

"Swoosh."

Inside the secret chamber of Ancient City, Lin Fei abruptly opened his eyes. A flash of brilliance sparkled in his gaze.

"It's done! The True Immortal-level world law has now fully integrated into the Illusory Realm. Although the Illusory Realm seems not to have transformed, it is incredibly strong—beyond imagination!"

Lin Fei couldn't help but feel a surge of excitement. This enhancement of the Illusory Realm was a monumental leap.

Of course, to know exactly how much, Lin Fei would have to test it himself. His thoughts immediately turned to the Azure Emperor Supreme.

After all, in the entire Ancient Covenant, the only one qualified to "spar" with Lin Fei was now just the Azure Emperor Supreme.

With this thought, Lin Fei quickly got up, left the secret chamber, and flew towards the grand hall of the Ancient Covenant headquarters.

Soon, Lin Fei arrived at the Ancient Covenant's grand hall and met the Azure Emperor Supreme.

The Azure Emperor Supreme appeared to be quite busy recently but showed a slight smile upon seeing Lin Fei, and slowly spoke, "Lin Fei, what brings you to see me?"

"Azure Emperor Supreme, I have fully integrated the True Immortal-level world law," Lin Fei stated. "However, I find myself without a worthy opponent to test my newfound strength. Therefore, I have come to seek guidance from you, to see if the Azure Emperor Supreme might be willing to test the might of the Illusory Realm with me."

Lin Fei was straightforward, directly stating his request.