The northwest of Meroe.

The northern region of the Darfur Plateau, which is part of the Sahara Desert, is typical of the Gobi desert landform.

The area of the area is about 300,000 square kilometers.

It's in this desert of the highlands.

A construction team of 500 people is secretly digging a huge tunnel into the depths of the plateau in an oasis on the eastern side of the plateau.

Sha Buyin, the leader of the construction team, looked at the tablet in his hand, which showed an excavation plan, and the tunnel was about 200 kilometers long.

They have been digging for more than half a year, and now only the last few tens of kilometers remain.

Don't think that the construction team of 500 people is very small, in fact, due to the application of a large number of automated engineering equipment, new technologies, and engineering auxiliary organisms, their construction scale is comparable to that of an engineering team of tens of thousands of people, and the efficiency is very high, and the construction speed is also very fast.

Behind their construction team, there is another construction team, which is responsible for the construction of node dungeons, and node dungeons need to be built every 50 kilometers along the tunnel.

While Shabyin and his construction team were busy digging the tunnel, a train followed the tunnel's tracks and arrived at their makeshift camp.

To be precise, the temporary camp of the construction team is actually a train.

The width of this super tunnel is very large, usually about 30 meters in diameter, and it is the same size as the vacuum ring pipe in the Sky City of Mada Island.

And for the sake of safety, it is usually built synchronously with two lines, the two tunnels are parallel to each other, the distance is usually about 500~600 meters, and the tunnel will be built every 10 kilometers or so, and a lateral connection auxiliary tunnel (diameter of about 10 meters) will be built.

Once the construction team enters the tunnel construction, it basically has to live in the tunnel for a long time.

Therefore, Coral Construction Group has specially customized a train-type "RV", which is usually composed of 50~150 carriages due to the use of ultra-wide gauge and relatively large carriage size.

For example, the Shabuyin construction team in front of them, their camp train consists of 86 carriages, which can accommodate 500 employees to live here for a long time.

Of course, the company will also consider the physical and mental health of the construction personnel, usually this kind of work is to do a month off for a month, and the husband and wife work together on the construction site.

The train that had just arrived was a supply train, and it was also the arrival of shift changers.

Shabin hurriedly drove his electric car to the camp.

In this type of tunnel, all the engineering equipment is electrically powered, mainly to reduce oxygen consumption inside the tunnel.

Although the gas balance chamber of the camp train constantly monitors the composition of gases such as oxygen and carbon dioxide in the tunnel, and releases oxygen by absorbing carbon dioxide, the gas composition is stabilized.

But if the internal combustion engine is used in large quantities, it will still cause unnecessary trouble.

Even if the construction team is equipped with bio-based armor, there is no need to obtain oxygen from the air, and the oxygen concentration inside the pipeline still needs to be maintained within a reasonable range.

When Shabin came to the camp train.

Automated loaders are already restocking camp trains, and the 100 employees who have come over for a shift change this week are already donning bio-based armor and exoskeletons.

A brown-skinned middle-aged man walked over and said, "Lao Sha, don't violate the company's rules, just take a break, I don't want to see you die of overwork."

The corners of Sha Buyin's mouth twitched slightly: "I only came back from a vacation to the Red Sea last week, and my body is great, and you are too worried, manager."

The manager of Meroe Construction, a subsidiary of Coral Construction Group, is the man in front of him, Suchesi, and he patted Shabuyin on the shoulder: "Why are you old boy still so thin? Did you go to the hospital?"

"Hehe, I'm not sick, the doctor said that there are several gut-related genes in my genes that inhibit the absorption rate of nutrients, so I will be thin." Shabuin explained helplessly.

[At present, it is the most complete and best app for listening to books, integrating 4 major speech synthesis engines and over 100 kinds of sounds

color, but also an artifact that supports offline reading, App]

The two chatted for a few minutes, and Suchesi also entered the topic: "In about half a month, the chairman will come to the Darfur Plateau to investigate, and the remaining 27 kilometers, you have to hurry up."

"The chairman is coming over?" Shabin's eyes widened.

"Well, after all, this project was formulated by the chairman himself."

Sha Buyin was a little curious: "Manager, then again, what exactly is this project for? Is it necessary to do it on such a large scale?"

"Don't ask, it's a classified project." Suchesi did not answer.

"Okay!" Shabuyin immediately put away his curiosity: "The last 27 kilometers will take about 11 days, I will speed up the progress as soon as possible."

Suchexi nodded slightly: "Then it's hard for you, if you need anything, you can ask it at any time, and the company will consider it at its discretion."

"Don't worry! I'm not going to be polite to the company."

The two chatted for a while.

Seeing that the supplies were complete and the shift changers had handed over their work, Suchesi took the train back to Atron's Oasis City.

The train was very fast, a distance of more than 170 kilometers, and it took less than 40 minutes.

Back in Atron Oasis City, he asked his assistant to arrange the placement of the shift change, while he went to the office building's design and planning center.

In the design and planning center, dozens of architects, urban planners, and underground construction engineers are busy with a big project.

Suchesi asked with great concern, "Engineer Anthony, how is the simulation test of the dome design?"

The middle-aged man with a mess of stubble spread his hands with bloodshot eyes: "Many simulated situations, including earthquakes, volcanic eruptions, asteroid impacts, and nuclear bomb explosions, have been tested, and the situation can only be regarded as neither good nor bad."

Suchesi was also helpless about this.

Human beings are still too small in the face of the great power of nature.

Even the technologically powerful Homo sapiens companies are helpless against many natural disasters.

He turned to another designer and asked, "Dr. Rosie, are there any problems with the design of the monitoring system?"

Rosie shook her head, "No, I've already finished the first draft, and I'm now in the middle of a mock test, so I don't think it's a big problem."

"That's good."

Suchesi looked at the design model of the holographic projection.

The whole design model is very ambitious.

In the middle is a flattened flatbread-shaped hollow structure with a diameter of 100 km and an internal height of 500 m.

It is surrounded by six small bases with a diameter of 5 km, whose main function is to arrange ancillary facilities and security facilities to ensure that nothing gets out of control.

"How's your security system going, Craft?"

Still, Kaft replied confidently, "I've added a nuclear bomb to the self-detonation system, along with a Gamma ray cannon, and I will definitely not let anything from this project leak out."

After some understanding, Suchesi updated the model of the design scheme, he is also a doctor of architectural engineering, and the level of various design solutions and new technology applications is not much different from that of everyone present.

He asked the others about the part of the people who were responsible, and the only problem now was what to do with the excavated earth and stones.

After all, this is to hollow out a huge underground space with a diameter of 100 kilometers and a height of 500 meters.

So he had to find a way to make use of the rocks and dirt.

This is both to reduce the import of external materials and to avoid attracting attention.