Not far from the helicopter, a huge mobile city is quietly floating there. This mobile city is very different from the "Furun" and "Fuhang" that Li Xuan had seen.

There are many more robotic arms on the edge of the city, with many types and sizes. In terms of size, although this mobile city is also extremely large, it is still significantly smaller than the other two that Li Xuan has seen. This should be the engineering city - "Jie Jie".

Moreover, near that mobile city, there are many engineering vehicles and engineering robots of different sizes, moving towards the city.

"Hey~ So many model towers have been built. It seems that the purpose of this ruin should be to be made into a fixed gathering point or something like that..." Luo Ming said when he saw some nearby signal towers.

"That's right... The ruins are about 1,000 meters underground. It is unrealistic to make them into mobile cities. However, due to the gravity magnetic field that the ruins come with, a large piece of space near the ruins has been empty, and the nearby geology is still very solid. In addition, the size of the ruins itself is very large, so the initial plan for this ruins is to build an underground gathering point..." Ji Yun nodded and explained, thinking that he had obtained a lot of internal information.

"Ji Yun..., you just said not many people?..." Li Xuan said to Ji Yun after looking at the crowds below and as many as three migrant towns that had moved here at some time.

"Now 'Jie Jie' is still in the final stage. Ordinary mercenaries and adventurers can't get in. They are all waiting outside. It seems that there must be too many people..." Ji Yun said with a smile.

"You mean ordinary mercenaries? That means someone can get in..." Li Xuan raised his eyebrows and said.

"That's natural. We can also go in first. Let's drive over first. I'll clear it up..." Ji Yun said indifferently.

"Tsk... the naked rich second generation..." Li Xuan rolled his eyes and thought to himself.

The helicopter was stopped near the "Jie Jie". After all the personnel came down, Ji Yun went over to explain to the same guy similar to the person in charge...

...

"This is a signal communication device. Each bag requires a 10-degree credit point. If you are interested, you can buy it..." He led the group to a place similar to a mine cave. The person in charge of leading the way pointed to a vending machine next to them and said to them.

This signal communication device is not very helpful to itself, but this is a mercenary mission issued by the Federation of Trade Unions. Since the technological level of Atlantis civilization is higher than that of current civilizations, their relics are generally in signal isolation, and in order to start developing this relics faster.

The state will issue the task of installing signal communication instruments in the name of the Federation of Trade Unions. This signal communication instrument is of no use alone, but when combined, it can break the signal barrier of the remains, so that the remains can be connected with the outside world.

If you install this kind of thing alone, it will be time-consuming and laborious. However, if you ask someone who is originally planning to enter to install it, the price will be much smaller. Of course, the installation of this kind of communication device also has installation requirements, and it does not mean that you can just put it in casually.

Since it was a bystander, Li Xuan naturally went over to buy two bags, and apart from him, there were several other teachers who also bought some. Then one person came one by one. Anyway, according to this guy, if it was not used up, it would still be recycled here at the original price.

"This is the entrance No. 11, the track has been placed. You can go to the ruins from here... Please wear your seat belts, and do not untie your seat belts in the middle..."

Everyone entered the mine-like entrance and boarded a simple rail car. The car should be able to sit for about fifty people, but now there are only seventeen of them in the car. After receiving the prompt from the person in charge of leading the way, everyone consciously hung up the seat belt, and then the simple rail car started slowly...

After moving forward steadily for about ten meters, a sharp turn came down. The slope with an inclination of about 45 degrees and the speed of getting faster and faster made everyone feel like they were riding a roller coaster, and it was an extremely abnormal roller coaster.

No wonder I have to fasten my seat belt. After all, this is a simple guide car. The guardrail on the side is very low. If one of them doesn't pay attention and falls out...

...

...

"This...this...this is too fake..." Li Xuan looked at the scene in front of him and thought to himself with a little shock. Originally, Li Xuan had even seen things like mobile cities, and it was a bit difficult to cause his inner shock, but at this time, Li Xuan could do the things in front of him.

A pyramid that is beyond imagination stands in a huge underground space. According to Li Xuan's keen spatial senses in his continuous practice of space tutorials, the pyramid itself is almost as large as a fifth of the size of a mobile city. You must know that this is a single building. Compared with this pyramid, the pyramid that Li Xuan saw when he accompanied his parents to Egypt for a trip to Egypt, the pyramid known as the largest in the world, was like a toy in front of this underground ruin...

In addition to the pyramid itself, the huge space and good air environment around it also make people feel that this place is more than 1,000 meters underground. Moreover, when we arrive here, according to the air indicators on the binding device, the masks and goggles on our faces can be removed. If such a large hole appears underground, the geological structure will be very unstable, but looking at the occasional exposed granite-like walls, Li Xuan finally knew why the government was preparing to convert this place into an underground gathering place.

Why occasionally? Because there are many places where thick high-strength alloy plates are laid, the alloy plate laying is an engineering robot that is still moving on the surrounding walls. The preliminary analysis of the remains has indeed been completed, but now we must start preparing for the construction of underground gathering sites. The main function of these engineering robots laying alloy plates is to prevent insects from coming...

Although this place is more than a thousand meters underground, the insect's ability to drill the ground is far beyond human expectations. The fall of dozens of underground gatherings is a bloody lesson.

"Huh?... Judging from the style of this pyramid, the identity of the owner here should be extremely noble..." Luo Ming said strangely.

"Isn't this nonsense? Unnoble can create such a monster-like pyramid..." Li Xuan said with a curl of his lips.

"Haha... Teacher Li Xuan, I can guarantee that the pyramid we see now is definitely less than one-third of the total size of this pyramid..." Luo Ming said with a smile.

"What?... Are you wrong..." This was not what Li Xuan said, but what a Level 6 soldier among the eight teachers Li Xuan didn't know.

"Class Luo Ming is right. According to the information I have obtained, the exposed part is only about one-fifth of the total volume of the pyramid. If this pyramid is calculated based on the detected volume, it is a little larger than our blessing..." Ji Yun explained with a smile...

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Chapter completed!