"Boom!!!"

A black thunder exploded outside Bai Yan's Abyss Territory, directly destroying a mountain peak about 3000 meters high nearby, killing countless higher demons!

All the demons knelt down on the ground, even under the constant threat of death, none of them fled.

Because the will of the Abyss had become furious!

No one dared to provoke its majesty, and no demon dared to stand up even if it meant dying in place.

The layer of the Abyss was vast and boundless, but it shook uncontrollably under the majesty of the Abyss Will.

Not only the demons prostrated on the ground, but even the earth seemed to tremble!

The Abyss Will, terrifyingly powerful!

It is not a creature, yet it is more powerful than any creature or demon in the Abyss.

It holds power over the life and death of all demons, but curiously, it holds no sway over Bai Yan's Abyss Territory.

Because Bai Yan's System originates from the same source as the Abyss Will, and in terms of power level, the System's power is on par with that of the Abyss Will.

The Abyss Will simply cannot enter Bai Yan's Abyss Territory.

Bai Yan's Abyss Territory, although located within the Abyss, is not under the jurisdiction of the Abyss Will.

The ink-black aura condensed on the horizon, enshrouding the entire layer's sky, without substance, its power more formidable and flexible than that of the Biochemical Plane.

"Rumble!"

The pitch-black aura emitted an evil aura, and booming sounds coupled with black lightning snaking could be heard in the thick black fog above.

This was the wrath of the Abyss Will, it was roaring, demanding Bai Yan to sacrifice the heart of the Biochemical Plane to it.

"Who are you trying to scare? Come inside if you dare!"

Bai Yan chuckled coldly, sheathed the Dragon Pattern Longsword crisply, and blatantly ignored the stream of consciousness emanating continuously from the Abyss Will.

Sorry, I am not a demon lord from within the Abyss, so I don't need to fear you, our relationship is purely cooperative.

Annoy me, and in the future, you won't even get a priest's soul!

"Boom! Rumble!"

The continuous dull sounds came, the higher demons sprawled across the ground burst and died, but only in Bai Yan's Abyss Territory, there was silence.

Bai Yan couldn't care less about the Abyss Will, frustrated and enraged, and directly focused intently on approaching the Demon Altar, closing his eyes, and imprinting the heart of the plane.

Ten minutes later, translucent streamers with a tinge of black energy emerged from the center of Bai Yan's forehead, wrapped around the heart of the plane, then streaks and wisp of multicolored mist split off and returned to the center of his forehead.

"Swoosh!"

A light sound, and the entire heart of the plane dimmed down, no longer bearing the Power of Rules.

The branding was successful!

The heart of the Biochemical Plane belonged to Bai Yan, and he completely grasped the Power of Rules of the Biochemical Plane!

In fact, for each heart of the plane, as long as the source of their Rule Power has been acquired, that is tantamount to owning the plane, much better than merely branding the heart of the plane!

After all, the source of the Rule Power lies within the heart of the plane itself, if only the heart is branded without the source of Rule Power being taken, then if an enemy seizes this heart of the plane, the control over the plane will be lost!

However, this method is usually only known to some Ancient Gods.

And Bai Yan, also knew this secure and ancient refining method through the Demon Lord System.

As the source of Rule Power entered, Bai Yan could distinctly feel every inch, every meridian in his body brimming with power, the very source of the Rule Power of the Biochemical Plane!

Unfortunately, this power, although pure and formidable, could not be used in the Abyss.

If this Rule Power were to be employed in other planes, its potency would be significantly diminished, for after all, the Biochemical Plane is but a second-level plane, its Rule Power unable to withstand the will of higher-level planes.

Only within the Biochemical Plane, could the Rule Power within Bai Yan truly unleash its strongest force!

"Sigh~!"

Bai Yan took a long breath, his eyes slightly narrowed, feeling the Rule Power continuously surging within him.

Excellent!

This feeling, absolutely fantastic!

"Boom! Roar!"

Outside the protective barrier, the vaguely roaring sounds of the Abyss Will—it was nearly driven to madness!

The previously very "tacit" partner dares to defy its will and refuse to hand over the Plane Heart!

How despicable!

A mere Demon Lord dares to infringe on the dignity of the Master of Abyss!

It's not like I'm not rewarding him, damn it! He's too arrogant!

Thunder rolled, rumbling incessantly, deafening.

Bai Yan curled his lips defiantly and gave the Abyss Will the middle finger.

"Scram!"

Bai Yan coldly shouted, "If you don't scram, then shut your mouth! I don't want to hear any more booming noises!"

"Boom!!!"

The sound got louder, the Abyss Will, like a petulant child, lingered outside the shield, unwilling to leave.

"Not leaving?"

Bai Yan sneered, thinking he could do nothing about it?

"Fine! Just stay outside then, but don't expect me to sacrifice the souls of Priests to you anymore."

Bai Yan sneered dismissively, then turned back to examine the Plane Heart.

So what about the Abyss Will?

No one can interfere with Bai Yan's decisions!

He is a domineering King, albeit somewhat stubborn, but certainly not reckless or foolhardy.

The relationship between Abyss Will and him was originally cooperative, and with the support of the Abyss Dominator System, Bai Yan feared nothing!

The black mist manifested by the Abyss Will shrank abruptly upon hearing Bai Yan's words, its swirling slowing down, appearing stunned and very human-like.

Damn it, this insignificant Demon Lord dares to threaten me!

The Abyss Will grew even angrier.

"Roar!"

A clear and eerie roar sounded, causing frequent anomalies across the Abyss Territory, tearing the heavens and earth apart!

"Are you going to scram or not!"

Bai Yan turned around and yelled angrily.

"Boom!"

Reluctantly, the Abyss Will let out a muffled noise, and then the black mist slowly dissipated, leaving somewhat aggrievedly.

It had no choice but to leave, it still relied on Bai Yan continuously providing it with the souls of Priests!

Looking over the Abyss Territory, although there are countless layers, it has been isolated from the outside world for far too long. Only Bai Yan, a Demon Lord, could bring it the souls it needed, so the Abyss Will dared not to be too rigid with Bai Yan.

Moreover, from aspects that Bai Yan was yet unaware of, the Abyss Will dared not take real action, it could put some pressure on him but couldn't really harm him...

"Coward!"

Bai Yan smiled indifferently, turning around and no longer paying attention to the Abyss Will.

No matter what it was, as long as you grasped its critical weakness, it wouldn't dare to turn hostile.

Bai Yan's gaze landed on the Plane Heart that lay quietly on the Demon Altar.

This object, though devoid of the source of Rule Power, was still immensely useful to Bai Yan!

Yes, of very great use!

The demons under Bai Yan's command, regardless of type, were all classified into nine ranks.

Ranks one to three were Lower Demons, representing the basic forces among demons.

Ranks four to six were Middle-level Demons, representing the core forces among demons.

Ranks seven to nine were Upper Demons, comparable to Demigods, and even some rare types of demons were almost comparable to weaker Gods!

The strongest demon Bai Yan could currently cultivate was a rank five Middle-level Demon, and a level six demon was also just due to the limitation of demon energy availability, which Bai Yan could cultivate anytime later.

But Upper Demons were different!

Each cultivation and evolution of an Upper Demon, besides requiring a large amount of demon energy, also needed varying amounts of "True Demon Essence!"

And the Plane Heart was closely related to the "True Demon Essence!"

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