Wu Yu had now elevated his Ground Demon Transformation Art into apotheosis immortal techniques. He could employ them actively in battle now.

Besides this, the four innate abilities of the Heaven Devouring Titanic Beast - Immolate, Return, Replicate, and Imparting - could also be used in battle to complement his other moves.

"Next, I should work on the Ruyi Jingu Bang's seals. No matter what, I should have a crack at it."

As Wu Yu finished reinforcing all of his other moves, he finally pulled out the Ruyi Jingu Bang, preparing to try and communicate with it.

If he succeeded, Wu Yu would definitely become much stronger.

"Ruyi Jingu Bang's first seal was Bedlam of Heaven and Earth!"

"The second seal held Vertigo."

"The third seal was a defensive Mystique, Vajra Shield."

What would the fourth seal be?

Wu Yu had no clue.

Unsure how to begin, he gripped the Ruyi Jingu Bang tightly, trying to communicate with it.

Wu Yu felt himself slip into a trance-like state, and he lost all sense of time. He held the Ruyi Jingu Bang as though in a dream.

Only in such a state could Wu Yu connect with the Ruyi Jingu Bang.

"This Ruyi Jingu Bang must have taken us to Heavenly Buddha's Domain for a reason. It...... could have something to do with the next seal."

Wu Yu was fixated on this theory.

Maintaining the connection with the Ruyi Jingu Bang, he placed it in the center of his Devouring Apotheosis Realm, deepening the connection.

Wu Yu began to open a spiritual connection with it.

He had yet to try this before. If the Ruyi Jingu Bang was in Wu Yu's Devouring Apotheosis Realm, then it was within his body, and there would be no distance between them.

Their spirits connected with resonance.

A slight hum was enough to lift Wu Yu's spirits. He was happy that it could still connect with him even within the Devouring Apotheosis Realm.

Wu Yu began to delve deeper into the Ruyi Jingu Bang, sometimes visualizing it as the Great Sage, Heaven's Equal himself, as though there was a golden battle monkey sitting in his Devouring Apotheosis Realm.

He talked to the Ruyi Jingu Bang, and felt like he was talking to the Great Sage, Heaven's Equal himself. And indeed it responded thusly, talking to Wu Yu occasionally, and deepening his understanding of the Ruyi Jingu Bang.

Like this, Wu Yu's affinity with the Jingu Bang gradually deepened.

Wu Yu made full use of his time. When the Ruyi Jingu Bang gave him insights, he would quickly absorb them. When it fell into silence, he would work on other things.

Most important was the epochal immortal designs in Eternal Emperor Tomb. Through his bronze ball key, he could continue to study ways to break those epochal immortal designs.

With his reinvented Spirit Penetration Art, he could now see through epochal immortal designs much quicker than before.

He recalled that breaking through Maelstrom Silver Dagger Sphere and 3 Billion Lifetaking Blades Formation had taken him about 10,000 years each. But now the newer epochal immortal designs took him less than half the time.

Originally, Spirit Penetration Art was only a supplement to a cultivator's understanding of spirit designs and immortal designs, but now that Wu Yu had made it an apotheosis immortal technique, it was useful even directly on epochal immortal designs.

With the help of Spirit Penetration Art, Wu Yu very quickly broke through two epochal immortal designs. These two were about as complex as Maelstrom Silver Dagger Sphere and 3 Billion Lifetaking Blades Formation, but Wu Yu took less than 10,000 years in total to break both.

In this time, Wu Yu remained safe and sound in the broken space rubble zone in Heavenly Buddha's Domain.

Especially after he devoured the divine sarira, there was nothing else left in this remote area to attract the attention of other immortal buddhas.

Therefore, Wu Yu was very relaxed, immersing fully into his cultivation, meditation, and research on epochal immortal designs.

"Now that I've broken these two epochal immortal designs, I can open two more eternal demon emperor graves when I return to Eternal Emperor Tomb next. I'll see if devouring two more corpses will bring me to the next cultivation realm!"

Wu Yu thought. His desire to return to Heavenly Domain grew.

However, he was also afraid that the Ruyi Jingu Bang had brought him to Heavenly Buddha's Domain for a specific reason, and he did not want to leave before he found it. If he could not return, then he might be ignoring a message from the Great Sage, Heaven's Equal.

However, in this period, he had gained a much tighter bond with the Ruyi Jingu Bang.

And he felt a curious aura from it that he had not felt before, as though he had become one with the Ruyi Jingu Bang.

He finally stood up, pulled the Ruyi Jingu Bang out from his Devouring Apotheosis Realm, and held it firmly in his hand, waving it.

The golden staff twirled in the starry air, drawing arcane patterns that followed an incomprehensible logic.

As these strange patterns continued to build, Wu Yu felt the fourth seal of the Ruyi Jingu Bang begin to shift!

It loosened, and the Ruyi Jingu Bang drew more and more patterns in the air. And with one final thwack from the staff, the patterns all joined together into a golden vortex!

"The fourth seal is broken?"

This felt too good to be true. 10,000 years of communicating with the Ruyi Jingu Bang had made things much easier.

With the breaking of the fourth seal, the Ruyi Jingu Bang had drawn a golden vortex in the air. It seemed to lead to another immortal domain!

"Immortal Domain Bridge!"

Information about the fourth seal flooded Wu Yu's mind. It was called Immortal Domain Bridge, and he could pass through immortal domains via this portal.

He could feel the immortal essence qi of Heavenly Domain wafting through from there, and Wu Yu was excited about it.

With the Immortal Domain Bridge, he did not have to worry about not being able to return.

Perhaps because he had hit upon the idea of moving between Heavenly Domain and Heavenly Buddha's Domain. That was why he had unknowingly worked away at the seal until his efforts paid off.

If not for him actively connecting with the epochal immortal treasure, the fourth seal would probably take much longer to break.

"Could it be that the Ruyi Jingu Bang brought me to Heavenly Buddha's Domain just for me to unlock the fourth seal?" Wu Yu was puzzled. But it seemed like he could move between immortal domains at will now. He could return to the Heavenly Domain for now to see if anything new had happened.

Luo Pin, Full Moon of Nanshan, and Ye Xixi were also overjoyed to see a way back to the Heavenly Domain. Finally, they had a working solution.

Leading the three of them, Wu Yu decided to return to Heavenly Domain to take a look.

Stepping through the golden vortex that was the Immortal Domain Bridge, the four returned to a place sweet with birdsong and flowers.

Full Moon of Nanshan immediately recognized the place from his previous wanderings. It was one of the 8,000 Sky Palaces, called Beckoning Moon Sky. It was full of immortal women cultivating!

"We're really back."

The four looked around them in wonder.

The fourth seal of the Ruyi Jingu Bang was truly something. Being able to move between immortal domains at will was something special indeed.

As they stepped out, the golden vortex vanished behind them, as though nothing had ever appeared.

"Oh, so many immortal message talismans?"

Wu Yu saw that many immortal message talismans had been waiting for him as he stepped out. Most of them were from the Patriarch Bodhi.

Patriarch Bodhi's immortal message talismans told him that Taiyi Zhenren had been waiting for him. If he returned, he should promptly hand the Ruyi Jingu Bang back to Taiyi Zhenren.

After all, the Patriarch Bodhi had to keep his word as an eminent immortal.

If he knew where Wu Yu was, he would definitely make him hand over the Ruyi Jingu Bang, upholding the exchange that Wu Yu and Taiyi Zhenren had promised on.

But now, the Ruyi Jingu Bang had just shown him the great secret of the Heavenly Buddha's Domain. If Wu Yu wanted to go there again, he would need the Ruyi Jingu Bang. Otherwise, he would be giving up the Great Sage, Heaven's Equal's legacy, and would have to take on the revenge of Demon Immortal Realm unarmed.

"Even if I hand over the Ruyi Jingu Bang, it must wait until after I deal with the matter of Heavenly Buddha's Domain!"

Wu Yu decided. He could not possibly hand it over now. Therefore, he used the Heaven Devouring Titanic Beast's Replicate skill to turn into an immortal woman, and waited here at Beckoning Moon Sky.

Besides the Patriarch Bodhi's immortal message talismans, there was also an immortal message talisman from Ming Long.

It seemed like in the 20 or 30,000 years he had been gone, things had changed.