In this void chasm, the three continued to absorb the eternal demon emperor corpse's revelations and energy, as well as life force.

This was much more effective than other demon kings eating it.

The three did not emerge from the void chasm for a long time.

After being through such a trial, the three finally endured through the flood of energy, and overcame it, beginning their terrifying rise to greater power.

After absorbing all the goodness of the eternal demon emperor corpse, they used the new revelations for themselves.

Using the eternal demon emperor corpse's revelations on dao, Wu Yu began to grasp the power of heavenly rule that only the Great Void Immortal Realm cultivators could use.

Within the immortal spirit world nuclei in Wu Yu's body, his Realm of Immortal Spirit circulated. This was a messy space, crammed with Wu Yu's assortment of dao revelations. But now it needed to be ordered.

Great Void Immortal Realm was where immortals realized the power of heavenly rule within their immortal spirit world nuclei. Each immortal came to their different individual heavenly rule powers. For Wu Yu, he had to find his own specialty as well.

Once he understood heavenly rule power, then the Realm of Immortal Spirit power within his body would all be converted to heavenly rule power, and his destructive output would rise at least tenfold.

This was the greatest difference between the Great Void Immortal Realm and Immortal Lord Realm.

Within his immortal spirit world nuclei, Wu Yu continued to process the various insights that he had devoured, especially from the most recent eternal demon emperor corpse.

Wu Yu gained a lot from these in many aspects. As he continued to learn and reach higher planes of awareness, his understanding of Realm of Immortal Spirit power reached a new peak.

"The power of golden fire - that's the most dominant energy in my body! That should be the most stable choice for consolidating my first heavenly rule."

Wu Yu decided as he learned. The eternal demon emperor corpse had helped him to grow at unprecedented pace. It had bolstered his progress by thousands of years that he would otherwise have to grind out.

But the eternal demon emperor had spent all his time comprehending heavenly rule, about its workings and usage. And being able to obtain all of it through devouring was a shortcut that helped speed Wu Yu towards a breakthrough to the Great Void Immortal Realm.

Most important was that forming his heavenly rule with the help of the eternal demon emperor corpse's insights was a piece of cake.

"10th Grade Mark of an Immortal King!"

Wu Yu had gone through brimstone and fire to get it, cycling through multiple identities. For this thing, he had made enemies of countless eternal immortal emperors in the sky palaces, including Primeval Mighty Miracle God.

What a superb thing it was.

Even a 9th Grade Mark of an Immortal King could more or less help one to secure a path to the eternal immortal emperor realm, let alone the 10th Grade Mark of an Immortal King. Wu Yu fused with it, and finally stepped into the world of heavenly rule. This was the Great Void Immortal Realm. In the sky palaces, every immortal who reached the Great Void Immortal Realm was called a great void immortal king.

When Wu Yu first reached the sky palaces, a great void immortal king had been like an insurmountable mountain to him. But now, he himself had reached that level. Through the boon of the eternal demon emperor corpse, he could breakthrough into this level.

He was possibly the fastest immortal in history. No one in the sky palaces could match his breakneck pace.

"Incandescent heavenly rule!"

Within Wu Yu's immortal spirit world nucleus, his first heavenly rule power appeared. It was a golden firebrand mark, the power of metal and fire synthesized within to form a terrifyingly strong heavenly rule power.

"Fuse!"

Wu Yu pulled out the 10th Grade Mark of an Immortal King, and broke apart his own Sea of Knowledge, inserting the 10th Grade Mark of an Immortal King. It fused completely with his own immortal spirit, becoming a kingly immortal spirit. This marked his graduation into a great void immortal king.

As for his fighting power, he was naturally much stronger than ordinary great void immortal kings.

One had to know that he could already fight fifth and sixth tier demon kings even before reaching the Great Void Immortal Realm.

Even if there was a gap between demon kings' and immortal kings' powers, the profusion of strength he had received after reaching the Great Void Immortal Realm meant that he would no longer need to Immolate that much to deal with the likes of Black Yama Demon King again.

After all, the strong burning was very harmful to himself. If not for the eternal demon emperor corpse, Wu Yu would probably have taken 10,000 years just to recover.

Of course, without the goal of the eternal demon emperor corpse to aim towards, Wu Yu would not have fought so unreservedly either. All of this was predicated on the possibilities that the eternal demon emperor corpse brought.

Great Void Immortal Realm, first tier. A 1-heaven immortal king!

Wu Yu had finally reached this tier, and his first incandescent heavenly rule was etched on his kingly immortal spirit. In a flash, all of his Realm of Immortal Spirit power had been thoroughly converted to heavenly rule power.

This was another true metamorphosis. Incandescent heavenly rule was the strongest power available to him now. It was at least a dozen times stronger than the Realm of Immortal Spirit power from before.

Even so, his body was still brimming with new thoughts and insights from the eternal demon emperor corpse, and his rise was far from petering out.

"Strike while the iron's hot. Might as well get the second heavenly rule out."

Wu Yu was quite anxious. There were many things he wanted to know, and many things he wanted to do. But all of it depended on him having sufficient strength.

Even if he had just entered the Great Void Immortal Realm, he was not satisfied with this goal.

Primeval Mighty Miracle God and the others in the sky palaces exerted too much pressure and stress on him. To him, it became a source of motivation for him to continue growing.

There was sufficient strength and knowledge left over for him to consolidate a second heavenly rule power.

While the three were cultivating and improving in the void chasm, digesting the eternal demon emperor corpse, the many demon kings outside were getting more and more hassled.

They had searched the entire black sea, and could not find the slightest trace of Wu Yu. Crucially, they were not willing to send out word to call more demon kings to search. Therefore, they had sealed off the black sea with their limited manpower and were stuck unable to find Wu Yu.

In truth, even if they had called the other demon kings, they probably would not have been able to find Wu Yu either. He was in a very secure place.

"Are we going to keep waiting? It's been 100 years already. That punk might have already left."

Primitive Demon King was glowering. He was a tempestuous one, and could not curb his impatience. He had gathered the other demon kings to discuss a plan.

"It's only been 100 years. Maybe that kid is trying to eat the eternal demon emperor corpse alone. But a mere Immortal Lord Realm cultivator like him, the eternal demon emperor corpse will kill him with an over-flooding of power. It's impossible." Primordial Forbidden Demon King asserted coldly.

"We can continue searching. He must be hidden somewhere in the black sea. How about we start searching the void chasms? I feel that it's the most likely place he's concealed." Dreary Gold Demon King said solemnly.

"The void chasms are not stable, and they might expand at any time. We might be lost inside if we're not careful. But we can use clones to search them. It might be slower, but there's still a chance." Golden Rhino Demon King suggested.

Therefore, they joined forces again, also calling back the 5-heavens demon kings who were searching. They all used their clone techniques to search the void chasms.

However, there were just too many void chasms in the black sea. It was a Herculean task to find Wu Yu amongst them. More importantly, these demon kings' clone techniques were a far cry from Wu Yu's own Unshackled Doppelganger.

Not just in number, but also in quality. Some demon kings could move freely within the black sea, but their clones would decompose upon contact with murky shadow black water. They could not possibly enter void chasms to search at all.

Therefore, their searching speed slowed to a snail's pace. They would not be able to find Wu Yu for a while.

As for Wu Yu, he was completely focused on his second heavenly rule. At this time, he was Visualizing the Inner Ape. In his mind's eye, the image of a fighting monkey appeared, fully clad in golden battle armor. The Great Sage, Heaven's Equal, the Victorious Fighting Buddha. This was the immortal's legacy that he had received.

"The second heavenly rule power is...... crusader heavenly rule!"

This was a simple and violent heavenly rule power. Crusader heavenly rule began to form within his kingly immortal spirit, marked by a golden staff. The golden staff mark lined up beside the golden flame mark, shining brightly.

Crusader heavenly rule could enhance all of Wu Yu's strengths. Whether in defense or offense, he would become much stronger. Most importantly was the battle will that it brought forth. It could become a power force of resistance and even diminish the opponent's power!

Crusader heavenly rule, when paired with the Void Reversal Mystique, could make Wu Yu nigh unbeatable in his territory. Black Yama Demon King was no longer on his level now.

He was finally in the second tier of the Great Void Immortal Realm. This was a turning point for Wu Yu, because he could feel that his strength had completely eclipsed a 6-heavens demon king like Black Yama Demon King now.

Of course, it was still not sufficient.

This major breakthrough allowed him to cultivate the tenth tier of the Invincible Vajra Body, the final 1000 words in the 10,000-word scripture. After he finished that, his Invincible Vajra Body would be complete.