The wall of the sky, led by the ten major sects of the Xuanxu Star Realm, unites the ten major dynasties of the Xuanxu Star Realm, the thirty-six heavenly sects, and the one hundred and twenty-nine earth sects, and jointly refines the tools of the town boundary.

It can absorb the qi of the earth, continue to grow, repair, and achieve the purpose of defending the entire Tianxuan Continent front.

At the same time, this wall can also block the invasion of space, and truly reach the defense of heaven and earth without dead ends in all directions.

On top of that, with the addition of a large number of Crystal of Life fragments, it is extremely sensitive to the sense of dead air.

Once a dead creature approaches, a dazzling green light will burst out from the city wall, playing the role of blocking + warning.

After receiving the warning of the Supernatural Wall, the guards stationed on the wall will carry a magic weapon specially used to deal with the dead spirits, and the dead spirits who will be committed will be repelled in the future.

It has been more than 1 year since the establishment of this supernatural wall.

However, in more than a year, there have not been a few times when they have been attacked by dead spirits.

Because, in the time before this, the dead qi had not spread from the ruins of the old star, and even if a small part of the dead qi spread over, it would not be able to form a large-scale number.

It wasn't until 5 days ago that the dead qi in the ruins of the old star suddenly poured out from the Void Black Realm and rushed out with a sweeping momentum.

The high-level of the Xuanxu Star Realm, who had seen the horror of the dead air, immediately withdrew the outpost, that is, the personnel in the defensive base that Gu Xuan and they saw, to the back of the Optimus Wall.

Above, it was Gu Xuan who controlled the Devouring Gu and infiltrated behind the Optimus Wall.

After spending a little time and converting all the guards at one of the garrison points into Gu slaves, the information obtained.

And in addition to this information, Gu Xuan also obtained an extremely important information.

That is, the Xuanxu Star Realm is in a very weak state at this moment.

Especially the current Tianxuan Continent, most of the high-end combat power has been drained, and at the same time, it has followed the army of the Xuanxu Star Realm to invade the Netherworld.

It is also necessary to draw out nearly a million combat power and garrison the entire Optimus Wall to guard against the attack of the dead souls.

At this moment, the internal combat power of the Tianxuan Continent has been wiped out, and only the largest number of low-end combat power remains, maintaining order and stability within the Heavenly Chosen Continent.

Such a situation is undoubtedly a godsend for Gu Xuan, and God has fed all the food to his mouth.

If Gu Xuan only needed to complete the task given to him by Ten Thousand Worlds City, then destroying the Optimus Wall and letting the Dead Qi destroy the entire Tianxuan Continent would be enough to complete the task, and it would be more than enough to complete the task.

It's just that Gu Xuan's purpose is not just to complete the task assigned by Ten Thousand Worlds City.

Compared to the mission of Ten Thousand Realms City, for the origin of the world in the Xuanxu Star Realm, and even the origin of the world, it was what Gu Xuan wanted the most.

Therefore, until enough World Origin is obtained, this Heavenly Wall Gu Xuan will never be destroyed.

He didn't want those dead creatures to turn the entire Tianxuan Continent into a lifeless scum realm, so he would still plunder the source of the world.

If you want to plunder the origin of the world of the Tianxuan Continent, then it is inevitable to fight with the creatures of the Tianxuan Continent.

And this Xuanxu Star Realm is an out-and-out level 2 civilization world.

You must know that in the level of the Chinese Ming World of Ten Thousand Realms City, every time one level is raised, the corresponding combat power level is a world-wide gap.

Among the civilization levels, there is no possibility of skipping the level of battle!

When a high-level civilization encounters a low-level civilization, enslaving the low-level civilized world is already a very kind result.

Exterminating the lower civilizations, imprisoning the lower civilizations, permanently banning the evolution of the lower civilizations, or keeping the creatures of the lower civilizations in captivity as livestock and as some kind of resource for continuous reproduction, these are just the most basic operations.

It's like human civilization encountering a tribe of apes.

Will humans treat apes as their own kind, and then teach apes technology and civilization, and then let apes compete with humans for the resources of the earth?

That's absolutely impossible!

This Xuanxu Star Realm, as a second-level civilization, even at this moment, is in a very empty state in their internal world.

Gu Xuan would never dare to underestimate the creatures in the Xuanxu Star Realm.

After all, even if a Tyrannosaurus rex is in a weakened state, it is still a Tyrannosaurus rex.

Among the civilization levels of Wanjie City, the primary civilization is also called the planetary civilization, which can break through the gravitational constraints of its own planet and enter space, initially carry out the exploration and colonization of planets within the star system, medical technology can cure known diseases of mankind, basically master the laws of physics of the universe and the chemical elements in the galaxy, and initially realize the nuclear aggregation ability for the development of energy.

The world corresponding to cultivation was the Blood Desolation Realm that Gu Xuan had experienced before, and it belonged to a very proficient world that was already able to use energy.

2. Second-level civilization

Also known as stellar civilization, it will use stellar energy as an energy source for space exploration, and the appearance of the warp engine can carry out extrastellar exploration to reach other star systems, and begin to implant intelligent chips in the human body to strengthen the body, and begin to contact with other alien civilizations of the same civilization level and try to explore the four-dimensional space.

The corresponding cultivation world is the Xuanxu Star Realm that Gu Xuan is in at the moment, which can already be called the Immortal Cultivation World, which can launch invasion wars against other worlds and plunder the resources of other worlds.

3. The third level of civilization

The development of this level of science and technology has reached the pinnacle of the dimension, called the galaxy civilization, which can open time and space travel for interstellar travel, understand black holes and master multidimensional space, contact with other galaxy higher civilizations, become a member of the Galactic Civilization Alliance, can develop and modify DNA information to strengthen the ontology, and at the same time, the demand for scarce element resources has risen significantly, which will cause conflicts with other hostile civilizations.

The corresponding cultivation world is the world of gods and demons in the Ten Thousand Worlds City, which belongs to the privileged existence, the ordinary world, the planet, for them, is already an indestructible existence, and the vast and boundless universe is their battlefield.

4. Fourth-level civilization

When this kind of civilization is developed, it has gone beyond the scope of ordinary intelligent civilizations, called super galactic civilizations, which can travel through multi-dimensional space, and are no longer subject to the limitations of life ontology, but interstellar wars carried out on the demand for resources will cause the destruction of other civilizations, and they have begun to master that dimensionality reduction strikes can threaten hostile civilizations of the same level.

The corresponding cultivation worlds are the three major Yuan Gu worlds of Ten Thousand Realms City, and almost all the worlds in the entire Ten Thousand Worlds City belong to their subordinate worlds.

5. Fifth level civilization

It can live in multi-dimensional space, and can use different dimensional spaces to make the resources it needs, so it no longer conducts interstellar wars but becomes the defender of space, which is called a multi-dimensional space civilization, and is usually a high-dimensional civilization admired by ordinary intelligent civilizations, which will help low-level civilizations progress and not be destroyed by external dangers.

It is said in the Ten Thousand Worlds City that the entire Ten Thousand Worlds City, including the three Yuan Ancient Worlds, together constitute the fifth-level civilization of the Ten Thousand Worlds City!

6. Sixth-level civilization

This kind of civilization can realize the travel between the universe and other universes, called the cosmic civilization, no longer limited by the rules of the universe, detached from the physical form to become the maintainer of the order and rules of the universe, and can adapt to the environment of the multiverse.

Different dimensional spaces and different universes are two completely different concepts.

According to Gu Xuan's understanding, the debate in the Ten Thousand Worlds City over whether the Ten Thousand Worlds City belonged to a fifth-level civilization or a sixth-level civilization was because of whether the world that the Ten Thousand Worlds City teleported them to was a different dimension of the same universe or a world of different universes.

However, the vast majority of the creatures in Myriad City, after learning about this civilization hierarchy, still favored the conjecture that Myriad City was a fifth-level civilization.

7. Final-level civilization

This kind of god-level civilization is no longer called a civilization, and no level of civilization can develop to this stage, because it is the creator of the universe, the creator of the rules of the universe, and the god in charge of the sixth-level civilization.

With this level of civilization, Gu Xuan couldn't imagine what form it would exist in.

Perhaps, he will be great, so great that he has created countless universes.

Perhaps, he is actually a street writer sitting in front of the computer, and the world they are in between keyboard tapping, the Earth Star, the Ten Thousand Worlds City, the Martial World, the Blood Desolation Realm, the Xuanxu Star Realm and so on, came into being.

Xuanxu Star Realm, as a world of immortal cultivation.

From the ruins of the Old Star, Gu Xuan might not feel its strength.

However, this Heavenly Wall is used as a tool for the Suppression Realm, as one of the most powerful magic weapons in the Xuanxu Star Realm.

Being able to span the entire Tianxuan Continent, even the death qi can be blocked, and the world with such a powerful magic weapon can imagine its strength.

Moreover, it is a powerful magic weapon like the Optimus Wall, but there are six in the Xuanxu Star Realm, and the Optimus Wall is still one of the weaker ones.

When he had just climbed the Heavenly Wall, Gu Xuan could clearly hear that a total of 2 of the six Town Boundary Artifacts had gone.

In addition to this wall of optimism used to block the dead spirits, there are also 3 Celestial Vessels in the Xuanxu Star Realm.

Judging from the power of this Heavenly Wall, the power of the other 3 Town Boundary Weapons is definitely at the level of destroying the heavens and the earth.

In addition to this town boundary weapon that stayed in the Xuanxu Star Realm, in this Xuanxu Star Boundary, according to convention, there must be many old undead monsters sitting in the entire world.

Once Gu Xuan was exposed to the surface, what he had to face was the top power of the Xuanxu Star Realm, suppressing and obliterating him with a crushing force.

Therefore, if you want to toss in this Xuanxu Star Realm, you will not be hit by the top power of the Dimensional Reduction.

A proper identity is crucial.

After going around in a circle, if Gu Xuan wanted to get enough benefits from the Xuanxu Star Realm, the 300,000 Gu slave army still had to be pulled over here.

It's just that if you want to pull the 300,000 Gu slave army over, it is much more difficult than what Gu Xuan thought before in the ruins of the old star.

First of all, the issue of teleportation channel energy must be solved, which must be stolen from the resource reserves of the Optimus Wall.

Then, it was how the army of 300,000 Gu slaves should pass through the resistance of the dead spirits after teleporting.

If this point is not resolved, the 300,000 Gu slave army will undoubtedly send food to the dead souls in vain.

The last point is how the army of 300,000 Gu slaves can pass through this wall of heaven and enter the hinterland area of the Tianxuan Continent.

"How's it going? The origin of the world in the Gu Realm is already on the verge of extinction, if it really can't be. I think it is better to send a group of Realm Devouring Gu first, enter the hinterland area of the Tianxuan Continent, find some resources first, convert them into the source of the world, and supply the Gu Realm to maintain the normal operation of the Gu Realm. ”

Just when Gu Xuan was thinking about how to solve these problems one by one.

Gu Lele also seemed to see Gu Xuan's difficulties, so he suggested to Gu Xuan on the side.

"No, we must not expose it in advance, you know, even the creatures of the Xuanxu Star Realm can't detect us. However, once the Realm Devouring Gu converted the resources into the source of the world, it was then separated from the Xuanxu Star Realm. This world consciousness of the Xuan Void Star Realm will definitely detect something. With the strength of this Xuanxu Star Realm, the world consciousness body of the Xuanxu Star Realm will definitely be many times stronger than the Blood Desolation Realm. ”

"Once we are targeted by the world consciousness, we are very passive and dangerous, unless we stay in the Gu Realm forever."

Hearing Gu Lele's suggestion, Gu Xuan did not agree, and after shaking his head in denial, Gu Xuan explained to Gu Lele.

"Well, I'm just going to make a suggestion, it's up to you to decide what to do. If you really can't do it, and you have to consume the World Origin, then I will fully support you, but you will have to double it back to me later. ”

Gu Lele also knew that if she could think of a way, Gu Xuan must have already considered it.

As soon as she said this, she was holding the mentality of what if, in case Gu Xuan didn't think of it, it would be considered a crooked hit.

"No, I've already thought of a way, you control the Gu Realm and keep the consumption to a minimum. It may take some time for my approach to succeed. ”

Gu Xuan, who had been so interrupted by Gu Lele and had been thinking hard about meditating but had not come up with a way, thought of a way at this time.

As the so-called cranes and mussels compete, the fishermen profit.

Gu Xuan's method was to provoke a battle between the Dead Soul and the Guardians of the Optimus Wall, and he could take the opportunity to teleport 300,000 Gu Slaves to this side.

Taking advantage of their battle, he didn't have time to take care of his timing, so he used the Slave God Gu to control a section of the garrison of the Optimus Wall.

In this way, without avoiding the attacks of the dead spirits and without alarming the defenders on the Optimus Wall, they can quietly enter the hinterland area of the Tianxuan Continent.

After pondering for a while and getting the details of this plan, Gu Xuan took the garrison points he now controlled as the center, and controlled 5 garrison points in each of the left and right directions, all of which were controlled by Slave God Gu.

According to the Supersky Wall, there is a garrison point every 1,000 meters, and Gu Xuan is the Supersky Wall that has already controlled the range of ten kilometers.

With such a long distance of the Optimus Wall, it was more than enough for an army of 300,000 Gu Slaves to pass through.

After taking control of the ten-kilometer-long Optimus City guards, Gu Xuan followed the news found the logistics fortress behind the Optimus Wall.

After infiltrating and probing from the Devouring Gu, he found the special spirit stone crystal for the teleportation channel that was removed from the defense base.

As the entrance to the Gu Realm opened, all these spirit stone crystals were counted into the Gu Realm.

At this point, all Gu Xuan needed to do was to find a way to provoke the dead spirits to attack the Optimus Wall, and provide cover for his army of 300,000 Gu slaves.