Chapter 530: Earth cannon

Shen Huabei led Qiao Lu into the main body of the Antarctic courtyard project. Such a huge building was built around a deep pit with a diameter of hundreds of meters. It was covered with an iron gate like a nuclear bomb silo. After evacuation, Only slipped slowly to the sides.
Qiao Li stood on a small bridge with strict security measures and slowly erected it under this deep well. The bridge deck was made of high-strength glass, so he could clearly see the scene under his feet.
"Welcome to the entrance of the Earth Tunnel," Shen Huabei introduced to him. "Be careful not to see your feet soft."
The vision of the eye does indeed allow the person with height phobia to die on the spot. The large pit with a diameter of hundreds of meters is bottomless, and there is an annular aperture at a distance from the pit wall, marking the existence of a deep pit in the darkness where no fingers are visible. .
Looking down from the bridge, the numerous apertures on the wall of the pit gradually shrank until they shrank into a light spot, just like staring at a large target with blue light. It is completely impossible to imagine where the bottom of the deep pit would extend to. .
It looks like the gate of hell, and it is also a bottomless pit in the literal sense, because this is a tunnel that runs through the earth. Jumping from the South Pole can come out from the North Pole on the other side. What you need to worry about falling into it is not to fall to death, but to Drastic temperature changes halfway through,
At the same time, pay attention to supplement nutrition. If you accidentally fall back and forth in the earth tunnel, being starved to death on the way from the building is not a joke.
"Below is the 12,756-kilometer earth tunnel?" Qiao Lu asked in amazement.
"At the same time, it is also an earth cannon," Ding Yi added. "This is the loading port of the shell."
In the face of this bottomless pit, people really have instinctive fear. As Nietzsche said, when you stare at the abyss, the abyss is staring at you.
Just looking at this abyss, it feels as if the whole person is going to be swallowed in. This is a kind of fear that comes to the heart. In the face of something that cannot be observed at all, the human instinct for survival will be awakened.
Qiao Li also breathed a little deeper before he calmed down and asked Shen Huabei: "Such a large-scale project must be very tricky."
"It's more tricky." Shen Huabei smiled bitterly. "In the beginning, the whole project was dancing on the tip of a knife. Dropping a screw from here can cause a big explosion on the other end. Later we gave the whole The magnetic levitation force field was added to the tunnel to finally avoid such disasters. However, other problems are still emerging, and I will not say too much here. "
"It's really hard for you."
Besides, it is already courageous to dare to enter this abyss to build an earth tunnel. It is even more difficult to be careful in this case to avoid making a small mistake.
"Fortunately, most of the projects are now near completion, and I can finally feel a little relieved." Shen Huabei said with relief.
Qiao Li stared at this near-completed earth cannon, always feeling as if it was a little worse. Suddenly he reacted and turned to ask:
"Since it is an earth cannon, what about its shells? It is impossible to really use screws as weapons?"
Of course, this so-called screw, as part of the earth tunnel, is also a new solid material with extremely high structural strength and can withstand the high temperature of the earth's center.
But since even a screw of the earth tunnel is made of new solid materials, the shells fired by the earth's cannons, of course, need more exaggeration.
Ding Yi smiled slightly: "Haha, Director Qiao Li, you have an idea."
Shen Huabei explained: "As you think, the ammunition of the earth cannon is of course a new solid substance, but the density is much higher. We cannot place it on the earth, otherwise the shell will sink directly into the ground Heart. "
"So where do you put it?" Qiao Li asked curiously.
Shen Huabei raised his finger toward the sky and replied with confidence: "Of course it is in space."
In order to see the truth of the material fired by the earth's cannons, Qiao Lu followed Shen Huabei and Ding Yi in the Antarctica by a space elevator to the sky above the earth. A huge space station floated here, which was also built as part of the Antarctic courtyard project.
Qiao Li was surprised to find that this space station is very similar to the previous pilot space station, that is, there is a prominent convex part at the rear of the space station, which makes the entire space station look like a huge key, aimed at the Antarctic courtyard below. The keyhole of the earth tunnel entrance works.
He walked inside the space station with Shen Huabei and Ding Yi, and Qiao Lu asked the two people in surprise:
"Is this part of the Antarctic courtyard project?"
Shen Huabei turned back and smiled, "Yes, this is the firing pin of the earth cannon."
"You call this thing a needle?"
Qiao Li could not help but blurt out. If the strike pin of the planetary engine is as amazing as the ancient siege hammer, then the entire giant space station, the size of the pilot space station, is actually the firing pin of the earth cannon. No one can speak up.
"So this is a big project," Ding Yi explained, "our bullet is inside this firing pin."
After walking for a while, Qiao Lu and his party came to the station's central control area.
Here, Qiao Li finally saw the cannonball of the earth's artillery as he wished, and it was stored in a gravity-free glass cabin. A large group of staff were busy around it.
It is just different from the stringent preparations of the surrounding personnel. The things stored in the glass cabin are not scary at all, and can even be said to be full of beauty.
It's a silver metal sphere ~ EbookFREE.me ~ It looks like a drop of round mercury, the surface is smooth like a mirror, or even beyond the mirror, it can perfectly reflect the face of everyone present On it.
There is also another characteristic, that is, the circle, reaching the ultimate circle. Just like its smooth surface, as a sphere, it is also an absolute circle. No matter how many points are spot-checked with optical instruments, there will be no slight circle error.
Just like the definition of a circle, the distance from each point to the center of the circle is equal, but when there is no error at the atomic level, it is very difficult to imagine!
The entire metal sphere exudes an art breath that looks like nature's ghostly axe and magic. It is hard to believe that this is something made by human technology.
"What exactly is this?"
Qiao Lu took a deep breath and asked, he didn't even know that such things existed on the stray earth.
"The final form of the new solid material after compression to the extreme." Ding Yi replied: "We should call it-strong interaction materials."