You don't want your secret to be revealed by others, right?

The magnificent Divine Wood towered between heaven and earth, emanating a faint divine radiance, with gigantic palaces perched on its massive trunks.

From the many Demon King palaces scattered in the lower levels of the World Tree, to the middle-level palaces of the Demon Saints, and up to the Demon God palaces in the canopy, the number of palaces visibly decreased and became more grandiose.

Under the concealment of the Dominator Divine Artifact 'Mist Shadow,' Lin Yue nearly blended entirely into the void, quickly flying up to the canopy level.

Though it was his first time in the Demon Country, with Xiahou Shou's memory as a guide, he knew clearly where the Heavenly Demon Ancestor's Heavenly Demon Palace was located.

"Fortunately, there's no word of the Heavenly Demon Ancestor cultivating a Second Primordial Spirit."

As Lin Yue searched for the Heavenly Demon Palace in his memory, he thought to himself, "Most of the main forces of the Demon Clan have already gone to Great Yong, otherwise even infiltrating the Heavenly Demon Palace would probably not be easy..."

The Second Primordial Spirit Cultivation Method requires a certain affinity with the heart and soul aspect.

Some Saint-level beings might be able to cultivate the Second Primordial Spirit Cultivation Method, but many in the Proving Realm cannot, like the Human Ancestor who specifically contemplated for thousands of years after being reincarnated as the Crown Prince before succeeding.

Moreover...

The Second Self inherently carries the risk of backlash, and few are willing to voluntarily split their Divine Soul.

In Xiahou Shou's memory, the Heavenly Demon Ancestor also admitted to not having a Second Primordial Spirit.

"One, two, three... three Demon Gods."

As Lin Yue quietly flew to the top of the World Tree, he perceived the palaces guarded by those Demon Gods.

Xiahou Shou's memory also aligned with the presence of these Demon God auras; these three great Demon Gods were mere regular Proving Realm entities and posed no threat to him.

After a while, he discovered the Dream Demon Ancestor's palace.

"The Dream Demon Ancestor is indeed here."

Lin Yue dared not sense too closely, to avoid being detected by the Dream Demon Ancestor.

Soon, he discovered the Wood Demon Ancestor on a main trunk, where the Wood Demon God was holding a broken wooden sword, seemingly drawing something from it.

Lin Yue quietly observed, immediately confirming that the Wood Demon Ancestor was absorbing and refining the divine power contained within this broken wooden sword.

This broken wooden sword should be a damaged Divine Artifact, containing remnants of Ancient Divine Power.

Before the Divine Emperor's descent, the divine power of either the Human Clan or the Demon Clan was almost exclusively discovered from Ancient Relics, either from the divine power remaining within Divine Artifacts or from the remnant divine power within the corpses of Proving Realm beings.

This is also why it took the Demon Clan a thousand years to gather the divine power needed to open the Ancient World.

"As expected, the Wood Demon God cannot sense me..."

A bit relieved, Lin Yue continued to fly higher.

In no time, he found the Heavenly Demon Palace from Xiahou Shou's memory among the trunks stretching hundreds to thousands of miles long.

Judging by appearances, this Heavenly Demon Palace seemed no more special than other Demon God palaces.

"The palace doors are tightly shut, with an array barrier enveloping it. It's likely personally arranged by the Heavenly Demon Ancestor. If I force my way in, the Heavenly Demon Ancestor might notice..."

Floating before the grand entrance of the Heavenly Demon Palace, Lin Yue contemplated for a long moment, then flipped his hand to take out a palm-sized golden ring. All fluctuations of aura were concealed beneath the Mist Shadow and did not spread even a little.

"Here it is."

He floated silently to the white wall on the other side of the palace, pointed his finger at the golden ring, which attached to the wall silently and seamlessly.

Once the ring fully adhered to the wall, it began to rotate gently.

A faint light rippled within the ring, as if transforming into a rippling water surface, silently penetrating a passage through the void.

The next instant, beyond the palm-sized golden ring, the scene inside the palace appeared.

However, this kind of spatial passage did not trigger the barrier within the palace nor alarm anyone.

"It works as expected."

Looking at the spatial passage formed by the golden ring, Lin Yue found it had a diameter no larger than a palm, but it was sufficient.

"Whoosh!"

In the next moment, Lin Yue transformed into an invisible flame and slipped through it directly.

The golden ring rapidly contracted and flew back into his body simultaneously.

In the blink of an eye, Lin Yue found himself inside the palace. The Long Bright Pearls embedded everywhere were exceptionally luminous. This should be a side hall, populated with numerous bookshelves also protected by a dust-repelling enchantment.

As soon as he entered the hall, he sensed a familiar feeling.

"The Human Ancestor... Xiahong Feng's last remaining soul fragment is indeed here!"

Lin Yue couldn't help but smile.

Back then, the Human Ancestor gave him a Divine Thought Mark, allowing him to sense nearby soul fragments, yet all these years, he hadn't discovered anything.

Now it proved that Xiahong Feng's soul fragment had indeed returned to the Human Ancestor's remains.

"It should be in this direction..."

Still maintaining his hidden state, Lin Yue began exploring the interior of the palace.

There were no Demon God auras inside, only two Demon Saint auras and a few Demon Clansmen who appeared to be servants.

But even ordinary Demon Gods couldn't detect his presence, let alone these small creatures.

Following his sensory direction, Lin Yue swiftly traversed and stealthily advanced within the palace.

Before long, he arrived in front of two towering copper doors, which were tightly closed, with an overwhelming aura seeping through, clearly guarded by another barrier.

"It's here!"

Once confirmed, Lin Yue quickly took out the golden ring again and pierced through the copper doors the same way as before.

Beyond the copper doors was a relatively spacious hall, empty except for a black coffin, which appeared quite peculiar.