When Iskar searched for the entrance, Chu Tianjiang was not idle.

After turning around the neighborhood, Chu Tianjiang made an astonishing discovery, that is, the volcanic ash covering the ground was very thin, and it was all recent.

That said, the volcano has only recently become active.

Volcano!?

Chu Tianjiang was startled and immediately called Iska and Soya over.

"Brother Chu, what did you find?"

"Perhaps, the secret we are looking for is not on the water, but beneath the surface."

"Under the water?"

Chu Tianjiang nodded and said, "Obviously, this volcano has been silent for many years, and it only recently, maybe a few days ago, it became active. Also, don't you think it's strange that Jupiter City, and those satellite cities, are built around the Abyssal Lake? ”

"What's so strange?" Soya asked.

"In the eastern region, there is no pattern to the distribution of central cities and satellite cities, right?"

"This ......"

"Also, it must take a lot of energy to modulate those behemoths, and the church also needs to obtain the energy needed to produce energy bodies. If my guess is correct, in the eastern region, all cities are built on geological fault zones, making it easier to obtain geothermal energy. ”

"What is a geological fault zone?"

Chu Tianjiang was stunned for a moment and said, "This is not important, the important thing is that the location of these cities is very important." There is no such problem in the central region. Obviously, the entire Abyssal Lake is on a huge crater, at least the southern part of the Abyssal Lake is on the crater, and where we are now is only a part of the crater. Therefore, the city is all spread out here. If the occupying forces want to, they don't even need to build underground bases and modulation tanks, the Abyssal Lake is a giant modulation tank. ”

"This ...... How is this possible? ”

"Let's go down and see, don't we know the way?"

Without much delay, the three of them immediately descended into the lake.

Although no underwater base was found, Chu Tianjiang's speculation was confirmed. At the bottom of the lake, especially to the south, near the bottom of the city of Jupiter, there are a large number of pipelines. In other words, the Church did use the Abyssal Lake as a modulation tank, and the modulation was done here.

From the distribution range of the pipeline, it can be roughly judged that the modulation here is done in one place.

In other words, even if nine lifeforms were concocted, these nine lifeforms were connected together, and one of them was extremely large, more than ten times the size of the one in Odin City. If the modulation is carried out in sub-regions, then the modulation products on the northern continent must be a sub-system, and this system is centered on the modulation products of the central region, and the modulation products of the eastern and western regions will be connected to it.

This was an astonishing discovery, but it didn't surprise Chu Tianjiang.

In fact, the more he discovered, the calmer Chu Tianjiang became. He was not surprised, but more worried, because it showed that victory over the church would be more difficult.

After turning around at the bottom of the lake, Chu Tianjiang's other guess was confirmed.

The Abyssal Lake is indeed a huge crater, and this crater was formed 10,000 years ago, that is, the product of great geological changes. It can even be said that the existence of the Northern Continent is directly related to this crater, because it is the magma that gushes out from here that stabilizes the crust of the Northern Continent and does not allow the Northern Continent to sink. The volcano erupted for at least a few hundred years after the geological upheaval and was only submerged by the seawater due to the overall subsidence of the plates. As the northern continent drifts northward, the exit to the north of the Abyss Lake is frozen. The fact that the crater is flooded does not mean that the volcano is dead, and the island that is exposed to the surface is also the result of the continuous eruption of the volcano. Because most of the energy is expended in a violent eruption, much less energy is released in subsequent eruptions.

In fact, it was for this reason that the Church built the city of Jupiter and built eight satellite cities around the Abyssal Lake.

That is, the crust here is the thinnest.

In the deepest part of the Abyssal Lake, the thickness of the earth's crust is less than five kilometers. Even elsewhere, the thickness of the earth's crust is between 10 and 15 kilometers.

The average thickness of the earth's crust is more than 20 kilometers.

In addition, because the volcano is not extinguished, it does not need to go deep into the mantle, and a huge amount of geothermal energy can be obtained inside the earth's crust.

With such good natural conditions, it is impossible for the Church not to take advantage of them.

Through those pipelines scattered at the bottom of the lake, Chu Tianjiang made a new discovery.

That is, to concoct that behemoth, it requires not only heat, but also a variety of resources, especially the organic matter that makes up life.

Some huge pipes are used to transport organic matter.

What's more, these pipes all connect to Jupiter City, as well as nearby satellite cities. In other words, the Church controlled the common people as laborers, and made them work in factories to produce the organic matter needed to make the behemoths.

Obviously, this is also the key reason why the church hid the modulation tank under the city in the eastern region.

Perhaps, there are many secrets in this, but they are all related to concoction.

At the bottom of the lake, Iskar found access to the volcano.

This was an unexpected discovery, which saved Chu Tianjiang a lot of trouble.

As Iscar had expected, it was a spatial passage made of powerful fields, and it had been severely damaged years earlier. Before it was destroyed, the entrance to this passage was on the shore of the lake, the magic hall that Soya said, and the exit was inside the volcano. What's more, the passage itself was only a part of the powerful confinement field, and this confinement field originally shrouded the entire abyssal lake. To put it simply, the being who created the Confining Ground compressed the space where the Abyssal Lake was located so that it could not be discovered by others. It wasn't until the confinement field disappeared that the Abyssal Lake appeared, and it was discovered by the inhabitants of the northern continent.

Obviously, this is not magic, but extremely advanced technology.

It can even be said that this is definitely not human technology.

It is important to know that although the Church has mastered the science and technology of creating subspace, and can compress space, it is absolutely impossible to compress the Abyssal Lake, which covers an area of more than five million square kilometers, into a small space. Obviously, the only one who created this confining ground was an intruder.

So, why did the invaders create this confinement ground, and why did they hide the abyssal lake and the volcanic island in the middle of the lake?

There is only one answer, in order to protect an extremely important secret, or an extremely important existence.

This made Chu Tianjiang believe that before the arrival of the church, the invader who stayed behind was here, and it was hidden inside the volcano.

Perhaps, Feist went to great lengths to find this place.

Of course, for the past few thousand years, magic has run rampant on the northern continents, and magicians are highly respected, and it must have something to do with the secrets hidden here.

After passing through the passage, Chu Tianjiang and the others came to a huge basement.

It looks more like a tomb built specifically for someone!

It's a pity that Chu Tianjiang and they came late.

The burial chamber was empty, there was nothing. Although it can be seen that a lot of things were stored here in the past, they have long been looted.

"Brother Chu......"

"Obviously, Feist's got here four years ago."

Iskar sighed, even if the intruder had been here, there was nothing left.

"Let's take a look." Chu Tianjiang smiled faintly and said, "Maybe there will be some discoveries, even if there are none, we can't just leave." ”

Iskar and Soya immediately began to search, while Chu Tianjiang walked towards the high platform in the center.

The platform has three floors, each of which is the same height, almost three meters, and the layers are trapezoidal. Coming to the top, Chu Tianjiang knew that there was originally something similar to a coffin here, and it was worshiped by tens of thousands of people. Perhaps, the intruder has been lying here for thousands of years.

Now, Chu Tianjiang was even more interested.

Those magicians from the Magic Guild obviously didn't follow the invaders all the time, but stumbled upon this place, and the first people who came here didn't have magic at all, but after coming here, after coming into contact with the invaders, they had powerful magic. Later, these people formed a magical union and began to rule the northern continent, making it a forbidden place for ordinary people to enter.

In other words, the so-called magicians are nothing more than guardians of the invaders.

They carefully guarded the invaders for thousands of years until the arrival of the Church.

So, did they rebel?

Thinking of this, Chu Tianjiang noticed that there were indeed traces of a battle in the tomb, but it had been cleaned up, that is, someone wanted to cover up what had happened here.

Apparently, it must have been the people of the church who cleared the battlefield and managed to cover up the battles that had taken place here.

It's a pity that the Magic Guild is just a small collective, and it's just a group of ordinary people who have taken advantage of the intruder's science and technology to gain superpowers. In the face of the church led by Fest, their superpowers are nothing, and it is impossible to stop the church from taking the coffin of the invaders.

Of course, the intruder may still be alive, and the coffin is just a tool for it to sleep.

The question is, what happened next?

Chu Tianjiang stood on the high platform, trying to imagine what happened at that time.

In the face of a strong enemy, will the Magic Guild just die? Wouldn't this organization, which has existed for thousands of years, do something more meaningful? For example, before you die, leave some clues, some clues that will be helpful to the latecomers and allow the latecomers to defeat the enemy.

If there is, it must be hidden somewhere here, but it is hidden very secretly.

Perhaps, the people of the church are not cleaning up the battlefield, but looking for clues that the magic union is hiding!