Half-immortal civilization

On the ground, a new wave of space shuttles to support the construction of the moon has already taken off, and almost 100% of all the materials needed for the construction of the moon now require ground support.Even in the initial stage of construction, even power resources need to be transmitted from the ground.

At the same time, the geologists on the moon have begun to walk into the underground pits of the moon, preparing to explore the interior of the moon; especially Zhang Chen once promised Zhang Jingyuan that he would find large natural metal deposits on the moon!

Scientists carrying a lot of supplies are like Mr. Turtles carrying huge tortoise shells, bloated and inconvenient to move!
Fortunately, this underground cave is quite friendly and relatively spacious, so if you go alone, it will basically not cause too much crowding.

Everyone didn't rush in, but kept groping around.

"You can't be wrong, this is a lava cave, exactly the same as on the earth. The difference is that it contains a large amount of cooled metal elements. Look, this is copper, this is silver, this is lead, zinc; according to the color spectrum Analysis, this is magnesium oxide, this is copper sulfate powder. Unfortunately, the moon is very dry, if it is on the earth, it will form beautiful malachite!"

"Huh? Professor Zhang, didn't you say that there will be simple metals on the moon? Why is there magnesium oxide?" Next to him, Zhou Xu was a little suspicious.

"It's just that there are simple substances, but not all of them are simple substances. Geological activities are complicated; especially metals such as magnesium are very active, and can even rob oxygen ions from other oxides. But this is just the beginning, so many metals have been discovered Now, it seems that there is indeed a natural treasure on the moon."

"Yes, yes." Zhou Xu responded, "I'm a rough person, and I don't know too much. But the leaders of the company have been emphasizing that in the space age, steel is more precious than gold. So, I also know a little bit. A large amount of metal element , is actually the most precious resource.”

"Hehe, not bad! It seems that the master company is really outstanding. When others are still thinking about going into space to find gold and silver, you have already realized the importance of metals such as steel.

Walk.Go deeper.There is nothing here that deserves special attention and research.Except for containing a large amount of metal elements and a particularly large content of metal particles, there is no difference from the Earth Formation.They are all cooled lava caves. "

Soft daylight lighting tools that bring out the most natural, true-to-life colors around.Such top-level fluorescent lamps are extremely expensive, and only expert companies can have this ability and determination.One per person!The price is as high as one million yuan.This is truly top notch equipment.

"Dangdang! Found a piece of gold!" Now.Even Zhou Xu was moved.Unexpectedly, I actually won the first prize.

"Throw it away!" Zhang Chen curled his lips in disdain after observing for a while. "One piece of shit gold, the legendary copper-zinc alloy!"

"Eh... Kong is happy!" After cutting with a knife, it is easy to judge; there are even some places inside that are unevenly fused, showing silvery white or purple red.However, this thing is also valuable for collection; it is not heavy anyway, so Zhou Xu threw it into the backpack.

The ground isn't flat, it's just a lava cave after all; and it's even a little narrow in places, because the lava has cooled unevenly.But everyone can occasionally find beautiful stones here.Such as crystal, calcite and so on.

Some people will collect specimens. After all, it is not easy to go to the moon, especially Zhang Chen and others, who are not from the master company.

"Be careful, there seems to be a change in the ground ahead!" The person from the master company who was walking in the front warned.

When I got closer, I found that the front suddenly became much steeper, and even showed a downhill slope of about 30°.

"Don't worry, it's normal. After all, volcanic lava comes from the interior of the earth's crust, and it's normal to have a downhill slope. Even the slope is already very gentle." Zhang Chen is a geologist after all, so he wasn't surprised.

However, after everyone walked about [-] meters again, the road became steep again; but it did not change instantaneously, but gradually.The surroundings of the cave became more and more empty, and in some places, beautiful crystal-clear stones, or gems, could even be seen; and the frequency of appearance of simple metals also increased a lot.

Suddenly, a member of the team accidentally pushed a weak stone, and then it rolled into the depths of the moon.

Rumble? ? ?
For a moment, everyone was stunned. They did not expect that there is air in the space inside the moon!
"Dididi..." No air analysis equipment was prepared, but it did not trouble the experts.Through spectral analysis, the proportion of atoms in the air can be directly determined.

"12% of sulfur atoms, 42% of oxygen atoms, 7% of carbon atoms, 4.5% of nitrogen atoms, 11% of hydrogen atoms...According to a reasonable proportion of distribution, the main composition of air is sulfur dioxide and sulfur trioxide, carbon dioxide, nitrogen oxides; followed by Composed of water (steam), hydrogen molecules, methane, hydrogen sulfide and other gases, it is toxic to the human body.

In addition, the density of air is about 0.12 kilograms per cubic meter.Only one tenth of the Earth's atmosphere. "

"Okay, make a good record." Zhang Chen nodded, and then used a high-brightness flashlight to search forward. The front began to become more and more steep, and there was even a tendency to develop towards a bottomless pit.

"Prepare the rope." Before Zhang Chen could open his mouth, Zhou Xu had already ordered the people from the Master Company to do it.High-strength carbon fiber cable, strong and light.The diameter is less than 7 mm, but it can lift objects weighing three tons.

Sections of rope are spliced ​​together, and the first thing to do is to explore the approximate depth below.

"Boom!" There was a muffled sound, and the stone tied in front had already fallen.

"87 meters deep." The team member in charge of distributing the rope reported the number.

"Continue to explore in another direction!" Compared with Zhou Xu and others, Zhang Chen is more cautious and knows how to make the exploration safer.

88 meters, 102 meters, 79 meters, 81 meters...

A few consecutive numbers come out, so that everyone has a general understanding of the following.Zhou Xu took the risk himself, hung himself on the rope, and swung in mid-air to explore the terrain below with a strong flashlight.

Zhou Xu: "The bottom is a typical terrain after the lava has cooled. There are no rocks, only a relatively smooth ground. It is relatively undulating."

Zhang Chen: "Have you seen the colors clearly? Different colors indicate different geological conditions and different material compositions."

Zhou Xu: "I can't see clearly. Some places seem to have water-like reflections. I don't know if it's an illusion."

"No! The interior of the moon should be very dry. It may be fragments of transparent rocks such as calcite or crystal." Zhang Chen's tone was almost certain.

"Oh, yes, it's not like water, because there is no change at all. If it's convenient, throw a few stones and I'll see how the ground is."

Bump... Several stones exploded on the ground.

"The ground is very solid, there should be no danger. I'll go down first, and wait for my news!"

Following the rope, Zhou Xu slid down slowly, constantly observing the rock wall along the way.As it goes deeper, there are more and more simple metal particles on the rock wall, and even a large number of metal blocks will gather in some places. (To be continued..)