Not long after, Yu Guihai refined the entire black stone and integrated it into the surface of the ghost shuttle.

As he expected, this object could offset the wind of destruction and prevent him from consuming his own power, which was a good help.

Yu Guihai continued to move forward. He did not encounter anything unusual for several days, and the surrounding scenery returned to the same scenery.

On this day, he suddenly discovered something abnormal. There was a strange fluctuation in the gray-white aura of destruction in front of him. This fluctuation made him feel slightly uncomfortable.

"There's something over there!"

Yu Guihai's heart moved, he thought for a moment, and then flew in the direction of the strange fluctuations.

Not long after, he passed through a ball of destructive spiritual energy and found an open area in front of him. This area was empty, with no destructive spiritual energy or anything else.

There seems to be some mysterious power in it, causing the violent wind of destruction around it to automatically deflect when it comes here, and nothing can enter it.

"It's the Death Hollow!"

Yu Guihai's expression changed. This was one of the terrifying and dangerous places he had seen from ancient records, and now he finally saw it in person.

According to ancient records, there is some kind of elusive and terrifying power here. Once it enters, it will cause people to die instantly, and the body will quickly turn into nothingness and disappear. Even the monks in the True Immortal Realm cannot resist it.

Yu Guihai took out some items and animals and plants that had been prepared long ago, and sent them into the cave one by one to explore the secrets inside.

Not long after, he stopped with a solemn expression.

After his testing, this death cavity was even more terrifying than what was described in the classics. Not to mention that the creatures would turn into nothingness if they were put into it, even earth, stone, and even metal spiritual materials would be reduced to powder and then disappear if they were put into it.

Yu Guihai attached his power to a spiritual treasure and sent it into the death cavity. It only lasted for a few breaths before the entire spiritual treasure disintegrated rapidly.

Upon seeing this, Yu Guihai hurriedly took out the spiritual treasure and held it in his hand. Only a small piece of the core of the spiritual treasure was left, and the rest had been turned into nothingness within the death cavity.

Yu Guihai felt awe-struck in his heart. The power of this spiritual treasure attached to him could only last for a few breaths of time. In other words, even if he entered the cave himself, he would not be able to sustain it for long.

However, after consuming so many things, he also figured out some information about the Death Hollow.

There is indeed a mysterious power within the death cavity. This power forms a cycle of its own, and these cycles are closed to form a cavity.

This mysterious force is so powerful that it excludes the power of destruction and is extremely lethal. It creates an effect similar to a digestion furnace inside the cavity, giving it the reputation of the Death Hollow.

Yu Guihai looked at the Lingbao fragment in his hand, and his eyes lit up slightly. There was a mysterious power in the hollow attached to this Lingbao fragment.

This power forms a small cycle on the Lingbao. The matter within the Lingbao fragments gradually disintegrates and disappears, slowly forming a small hole the size of a fingertip.

Yu Guihai was very happy to see this. He was trying to further study the power of the death hole, but the hole was too dangerous, and he did not dare to take risks easily. This small hole came at the right time, and with his strength, he could

Contain it and study it.

If he can figure out the details of this power, or even completely master it, then he will have another powerful method.

The greater benefit is that he may be able to use this power to better explore the Death Star Territory.

Thinking of this, Yu Guihai didn't waste any time. He immediately returned and flew outside.

Not long after, Yu Guihai left the Death Star Territory, found a huge planet in the desolate star territory outside, opened up a cave, and lived in it.

He casually set up a restriction, then took out the piece of spiritual treasure fragment and placed it within the restriction.

At this time, there is only a thin shell left in the Lingbao fragment, and inside is a small death cavity. Although this cavity is small, it is a complete cycle and is perfect for research.

Yu Guihai carefully tested it, and found that although the cavity was small, the power inside was not reduced at all, and was basically the same as that of a large cavity.

He used various items and methods for testing, and finally found that if he activated the Chaos Spirit Treasure with all his strength, he could resist the erosion of the void, but it would consume a lot of money. His immortal energy disappeared like running water into this small

Within the void.

However, what Yu Guihai is most in need of is immortality, and what he is least afraid of is consumption.

He continuously drove the Chaos Spirit Treasure to test the power of the hollow. After repeated contact with the power, he finally discovered that the effect of the hollow was far away.

The power in this hole itself is composed of tiny power cycles, and the power of the hole is released by these tiny power cycles.

Among them, the smallest force circulation is as tiny as an electron, and countless smallest circulation units are arranged to form large hole units, and then large and small holes are formed.

If you want to master this kind of hollow, you only need to master the smallest hollow circulation unit. The unit that makes up this smallest hollow circulation is a special kind of destructive aura.

This kind of destructive aura is basically the same as the ordinary destructive aura in the Death Star Realm. The only difference is that this special destructive aura contains a special attribute. This attribute is the fundamental factor in forming a hollow cycle.

.

Yu Guihai looked thoughtful. This special kind of destructive spiritual energy was like a special kind of powerful immortal essence, but it had been damaged in some way and had lost most of its characteristics.

This situation can be related to the fierce battle between the great powers and the evil spirits in ancient times.

The battle between the two superpowers formed the boundless Death Star Field. The forces they released collided fiercely, and most of them completely lost the mark of their own power, becoming a destructive aura that filled the Death Star Field.

However, there is a small number of special powers that have not completely lost their own characteristics, and have turned into terrifying special dangerous powers like the Death Hollow.

According to this speculation, other dangers within the Death Star Territory, such as the Filthy Land, the Evil Ghost Wind, the Blood-Transforming Demonic Light, etc. may be caused by the special powers of the two powerful men.

However, it will be very difficult for Yu Guihai to master this power.

Because this kind of power is formed by the power above the True Immortal Realm, its own characteristics have not been completely destroyed, and it still has a trace of the power and power of the Mysterious Immortal Realm.

Although this power is very weak and cannot cause much danger to Yu Guihai, it is basically impossible for him to master this power.

Yu Guihai tried it for a while and then gave up.

With his current strength, he really cannot master this kind of power. He probably has to wait until he initially comes into contact with the power of the Mysterious Immortal Realm before he can master this kind of power.

However, he did not gain anything.

When he was trying to master this power, he unintentionally figured out some secrets of that hollow circulation unit, and a mysterious spell deduction option appeared on the system interface.

Unknown Spell: 0/52.

This spell requires fifty-two upgrade points to deduce, which surprised Yu Guihai. With his current strength, even mastering ordinary True Fairyland spells only requires two or three upgrade points.

This spell requires fifty-two upgrade points, which is already twenty times higher than ordinary True Fairyland spells. It is obvious that its level is not low.

Yu Guihai immediately decided to deduce this spell before talking about it.

So, he imprisoned the small hole and put it away, and re-entered the Death Star Territory.

It would take fifty-two days to deduce this unknown spell. Naturally, he couldn't wait any longer, so he prepared to explore the Death Star Territory while deducing the spell.

After returning to the Death Star Territory, Yu Guihai chose another direction to explore.

For several days, he didn't encounter anything of value. It seemed that because this was a fringe area, various abnormal phenomena were relatively rare.

On this day, while Yu Guihai was thinking, he suddenly felt a terrifying danger approaching.

He immediately controlled the ghost shuttle to flash and left the place.

Phew~

A black whirlwind roared past his previous position.

This kind of whirlwind is very different from the surrounding gray-white wind of destruction. In the whirlwind, you can clearly see the ferocious face of an evil ghost. The evil ghost's face seems to have consciousness, and its empty eyes are staring at Yu Guihai.

He opened his mouth and let out a silent wail.

Yu Guihai felt his soul shake, as if he had been attacked by some kind of soul.

His face was a little solemn. This evil wind had a powerful destructive power on the soul. He could feel the threat. If he was really blown by this evil wind, he would probably have to work hard to protect the soul.

Not traumatized.

At this time, the evil ghost wind did not hit him and disappeared directly from a short distance away. The entire whirlwind seemed to have never appeared before, disappearing completely without leaving any traces.

"It is indeed as dangerous as recorded in ancient times, and its power is impressive."

He sighed in admiration and urged the ghost shuttle to move forward.

After a while, his face changed slightly and he turned his head to look to the right.

A ball of extremely rich and destructive spiritual energy suddenly appeared at that location.

This aura of destruction is far richer than the surrounding ones, floating in the void like a gray cloud.

Yu Guihai could feel that there was something in this cloud of destruction, attracting the surrounding spiritual energy of destruction to merge into it, and continuously expanding the cloud.

He did not act rashly, but carefully hid in the distance and observed carefully.

If the cloud of destruction is so condensed, its corresponding power is far beyond the ordinary aura of destruction. Therefore, he must act carefully in case he encounters someone who is not so easy to deal with.

After observing for a while, Yu Guihai felt a chill in his heart.

He found that the cloud was constantly squirming with breaths and breaths, as if the things inside were breathing, and with each breath, it also needed to absorb the surrounding destructive spiritual energy, similar to the practice of monks.

In this case, he speculated that the thing inside might be some kind of monster.

As a result, he didn't dare to act rashly. If the thing inside was too powerful, it would be difficult for him to fight against it.

Yu Guihai used various methods to explore for a while, but found that he could not detect the real situation. This cloud had some kind of powerful restriction, blocking all his exploration methods.

He thought twice and decided to take the risk. Once there was danger, he would immediately activate the ghost shuttle to escape.

Yu Guihai made up his mind and turned around, heading away from the Death Star Territory and reaching an extreme distance.

Then, he suddenly fired a series of spells, and a terrifying black-gray gust of wind suddenly emerged from above the clouds, and then suddenly pounced on the clouds.

This black and gray gust of wind is somewhat similar to the evil ghost wind except that it does not have the face of the evil ghost.

In fact, this is a powerful spell cast by Yu Guihai. It comes from the Yin Refining Classic. It is a powerful Yin wind that can directly dissipate the bones and flesh of a strong person in the True Immortal Realm and decompose the soul.
To be continued...