(Cat Flutter Chinese) After advancing from a first-level civilization to a second-level civilization, it is much more difficult to advance each civilization. (can be found)

In particular, the difficulty of advancing from a fourth-level civilization to a fifth-level civilization is almost several times that of the previous promotions combined.

Because in addition to some of the more common rare crystals, the World Tree promotion also requires a large number of functional xìng crystals, such as ice and fire crystals.

Therefore, in addition to obtaining a large number of flame crystals, Aoki also needs to obtain a large number of ice crystals, which are all functional crystals necessary for the promotion of a fourth-level civilization to a fifth-level civilization, and are used to communicate with the dimensional space.

After all, after a civilization is promoted from a fourth-level civilization to a fifth-level civilization, it will generate many incredible powers, and it can even tear through the ice and fire crystals to tear the space and obtain the power of space.

When a planet can get the power of space, it will get a medium-grade space crystal. With this crystal, not only will the volume of the entire planet continue to expand, and in addition to getting more resources, the heart of the planet will also be able to communicate with the dimensional space and be replenished by the resources of the dimensional space.

In this way, the energy of the heart of the entire planet will become larger and larger, and it will even become a treasure trove of resources that can generate infinite resources. When the power of space continues to a certain extent, a space will be formed at the core of the heart of the earth that is similar to devouring space.

This is nothing, when the fifth-level civilization is promoted to the sixth-level civilization, this space power will be strengthened, and it can even make the entire planet have the ability to tear through space. In this way, even the planet itself can create space tunnels without the need for space jumps with the help of external forces.

What's even more terrifying is that the whole planet can also jump in different spaces throughout the time, generating an incredible power. With this power, the entire planet can teleport within a certain distance, leaving the entire planetary civilization in a state of near-invincibility.

This is also the reason why Aoki urgently needs to find the flame crystal and the ice crystal.

Because these two crystals were found. Earth civilization has the ability to tear open the door of dimensional space. In this way, the earth's civilization is equivalent to being able to actively communicate with the dimensional space. If you are lucky, even if the Earth civilization stays in the Devouring Space, you will be able to communicate with the dimensional space and get countless treasures.

But now the civilization of the earth is a little bit away from this step.

After Aoki found a large number of flame crystals, he also needed the corresponding ice crystals to be able to advance to the fifth level civilization. It's a pity that the flame crystals are easy to find, but the ice crystals are very difficult to find.

Just when the Earth Civilization Fleet returned to Earth, suddenly Aoki thought of Feiyun Star.

Inside the core of the Flying Cloud Star there are a large number of ice crystals. These ice crystals are incomparably pure, no weaker than flame crystals.

"Hmm. It should be possible to advance to the fifth level of civilization. But I still need to prepare! "Aoki knows that at this moment, even if the Earth Civilization is promoted to the fifth level civilization, it will not be able to escape the punishment of Devouring the Tunnel.

While Aoki is secretly mining the ice crystals of the Flying Cloud Star, he is also secretly accumulating power. The technology of the fourth-level civilization in the golden ring is silently digested to enrich the scientific and technological level of the earth's civilization.

Because of the Ice and Fire Crystal, Aoki also completed some tasks of the Golden Sè Ring, obtained some points, and opened some contents of the treasure house of fifth-level civilization science and technology information.

In this way, Aoki can continue to upgrade the Earth Civilization Fleet. Develop more and more Tier 5 civilization warships.

In the next few years when the Earth Civilization silently accumulated strength, the Earth Civilization Fleet also searched for other resources nearby in the name of going out to find the Ice Crystal and the Heaven-Shattering Alliance. Although the Earth Civilization has not found any additional Ice Crystals in the past few years, the Earth Civilization has indeed plundered a lot of other resources.

Finally, it's time for Earth civilization to leave.

"You're getting out of here? So fast! "The leader of the Heaven-shattering Alliance knew that Aoki was leaving, and although he was mentally prepared, he was still very shocked.

However, he also knew the plans of the earth civilization, so he did not continue to keep it.

When parting, it is inevitable to be sad. In the past few years, we have shared hardships and hardships. Coupled with the support of the earth's civilization, they have reached the point of worship and admiration for the earth.

Aoki said hello to several fourth-level civilizations of the Heaven-Shattering Alliance, and then left with the three planets and entered the deeper devouring space.

In fact, the countless resources in the Devouring Space are all accumulated. It's just that there are too many low-level resources here, and the number of high-level resources that can be promoted is too small, so the battle will be endless. This is another cycle deliberately created by devouring civilization.

After leaving the Shocking Alliance, Aoki also followed the route arranged first to a relatively remote Devouring Space area to prepare for the promotion.

The reason why Aoki did this was because he didn't want the Earth Civilization to attract a large number of dark beasts when it was promoted to a fifth-level civilization, which would be unfavorable to the Heaven-Shattering Alliance. It even spreads to a larger area. But in this way, the advancement of the earth civilization needs to be borne by the earth civilization alone.

As more resources were absorbed by the Earth Civilization in the World Tree, a large number of flames appeared on the surface of the World Tree of the Earth Civilization that was originally calm on the surface. These flames began to scorch the surface of the World Tree. He was still jumping and moving in the trunk of the World Tree, and he had the feeling of breaking through the core of the World Tree.

However, after Aoki absorbed the ice crystal, a large amount of cold qi immediately began to cover the jumping flame energy, and even formed a tendency to be evenly matched with the flame energy on the World Tree. These two forces are constantly working on each other, and they begin to gradually form a relatively stable balance.

As more flame crystals and ice crystals began to be injected into the core of the World Tree, the ice energy and flame energy began to enter a state of seeming equilibrium, and began to be injected into the heart of the earth along with the countless thick roots of Aoki's body.

"Snort, snort, snort!"

As these two forces injected more and more energy, they began to appear slightly unbalanced, and even spatial rifts appeared in advance. These spatial rifts actually tore through the space, causing the main body of the Earth's Civilization World Tree to also be affected, constantly collapsing, and even changing in the process to produce a mysterious power.

Originally, this situation rarely occurred, but the speed of the advancement of the earth's civilization was too fast, which caused some energy fluctuations in the core of the World Tree, which was supposed to be very stable, forming a large number of unstable factors. Even the growing power of ice and fire gathered in the heart of the planet has been affected in some way.

At this moment, the golden ring flew out of Aoki's body and appeared above the World Tree of Earth Civilization, as if a huge ring shrouded the World Tree of Earth Civilization inside, forming a wave of energy fluctuations that began to stabilize the ice and fire energy fluctuations within the core of the World Tree.

Gradually, in the process of the power of ice and fire gradually regaining its balance and even accumulating, the power of space began to form at the very core of the heart of the earth.

"Okay, it's almost done!" Aoki was a little excited when he saw more and more spatial forces constantly forming, but more nervous.

Because the formation of space power means that the earth's civilization has begun to advance. But in this way, the danger of the earth's civilization is gradually approaching.

After about a few days, the promotion of the World Tree of Earth Civilization has reached a very critical moment. At this time, a large amount of energy will be consumed, and assist the heart of the planet to tear through space to generate space power.

Once the space is torn apart, the first thing that pours into the heart of the planet is the space crystal, as well as a large amount of resources and energy from the extradimensional space in the heart of the earth.

These resources and energy are no longer ordinary resources when they first started to advance, but more low-grade rare crystals, and even some very rare medium-grade crystals, which are constantly spewing out from the dimensional space.

After these crystals are absorbed by Aoki's body, the World Tree will be officially promoted and the transformation of the World Tree and the entire planet will be completed.

However, in this way, Devouring Space will detect the advancement of the Earth civilization, and then more dark beasts will appear near the Earth civilization and carry out crazy killing attacks on the Earth civilization.

But none of this is something Aoki can avoid. Cat flutter Chinese