Training Center of the National Defense University of the Moon Base.

Zhou Kun has maintained a high degree of vigilance from the first moment he set foot on the moon. He understands that even if he quits the exchange student program, he will not be let go. Since this is the case, you can only choose to face it.

Death is no longer unfamiliar, but for the sake of ideals, we have to give it a go.

The moon has no atmosphere, so it is difficult to modify the moon, and the only way to do it is to build a city protected by a transparent metal cover, just like the Earth. The base is like that, only it looks more and more like a metropolis.

The training center of the National Defense University is located at the very edge of the base and serves as a fulcrum at the outermost part of the base. Equipped with enough equipment, 3 km away is the famous Kappa limestone mine, where the production of limestone is stable, but excavation is difficult, so the cost of limestone is extremely high. But as a resource, it is relatively cheap.

In view of the special environment of the moon, many high-precision parts, equipment, and equipment are forged here, and it is now the core of the earth's most cutting-edge manufacturing industry.

It is the largest port of mankind, where the Third Fleet is stationed, and where the Third Fleet is located. If the First Martian Fleet is the first line of defense for mankind, then the Third Fleet on the Moon is the second line of defense for mankind.

Zhou Kun and An Lina strolled through the training center, looking at the dark night sky. Outside the transparent metal cover, human waste is floating everywhere.

"Everywhere we go, humans are always destroying. Even if you are aware of the importance, you will put the interests first. An Lina's words made Zhou Kun impressed, is this still AI? Although the tone is flat, it contains feelings.

"Humans are always prophetic." Zhou Kun followed. "And extremely selfish. Both in the prehistoric period and in the present. ”

An Lina agreed.

"With so much AI here, it feels like we've arrived in the age of robots." Zhou Kun couldn't help but complain, you must know that there was a robot war a hundred years ago, and after the war subsided, humans completely canceled the militarization of AI. This overly calm species will choose to behave best for their species under the right conditions, and they are a cold species with the same intelligence as humans but no emotions. Out of instinct, Zhou Kun didn't say these words.

An Lina didn't care what Zhou Kun said, none of this mattered.

Suddenly, Zhou Kun saw that Yisheng actually followed an officer out of the training center, what was going on? Out of concern, Zhou Kun issued three question marks from the three-dimensional table. However, there was no response.

"What are you thinking?" An Lina discovered Zhou Kun's gaffe.

Yisheng followed an officer out of the training center.

"Isn't he a warrant officer of the Third Fleet?" An Lina said calmly, "How can there be anything, you better think about yourself first." ”

Zhou Kun's face turned red and he didn't speak again, as if he had forgotten about this stubble. As for myself, my experience has taught me not to take risks when I am not prepared, and now I can do almost all the preparations. Thanks to the Department of Colleges and Universities of the Ministry of Education for preparing an accompanying student for herself.

……

A day on the moon is fast, just over 7 hours, less than 8 hours. Originally, Zhou Kun thought that he could rest for a day, but it turned out to be only 8 hours.

In the shouts of Chen Ba, the students who had not yet rested lined up on the training ground of the training center.

Chen Ba on the moon seems to be a little different, more radical and more excited.

"This training on the moon lasted a month, in fact, it was 10 days. Everyone must have seen the content of the first week's arrangement, mining! Once the two pieces of limestone can be collected, they can move on to the next step. ”

After speaking, Chen Ba took the students to a mine in the northernmost part of the training center. The mine cave ** was exposed, and it looked gray on the outside, and each student put on protective clothing on the periphery of the mine, while Zhou Kun and An Lina secretly put on the quantum protective clothing.

It seemed that sensing some vicious eyes in the crowd, Zhou Kun was a little worried. An Lina tightened the baggage she was carrying. Chen Ba did not stop the students from bringing more things into the mine.

Hundreds of people entered through the entrance of the cave in turn, and it was a cave full of graystone crystals, and the crystals were exposed, and it was obviously extremely difficult to mine, otherwise it would have been mined by people long ago.

An Lina followed Zhou Kun closely, the body system quickly calculated everything at present, the depth of the cave is more than 1,500 meters, the average width of the hole is more than 20 meters, and the thickness of the cave made of gray stone is about 6 meters to 10 meters.

Strings of stalagmite-like crystals hung upside down from the roof of the cave, emitting bursts of energy waves.

No one realized that some people slowly moved closer to Zhou Kun's surroundings. As the cave deepened, the gravitational pull of the earth and the moon gradually strengthened, and the crowd obviously felt the strain.

"Uneven gravity?" Zhou Kun asked.

"The Earth's gravity is constant, and the Moon's gravity increases as you get closer to the center of the Moon." "This shows that there is something special in the lunar center. ”

The crowd walked more and more slowly, not only in gravity, but also in air pressure. Here, the man-made atmosphere thinned and the circulating system of protective clothing began to operate.

Chen Ba walked in front, greeting the queue from time to time.

"Look, corpses." Some students were the first to find the long-dead body, which looked like the remains of the students, and the whole person was wrapped in crystals along with the protective suit.

Fear spreads through the crowd.

Inadvertently, Zhou Kun saw Zhang Jingjing's brothers and sisters, but Zhou Kun had no intention of walking with them, he was in danger at the moment, and there was no need to bring disaster to others. Zhou Kun thought so.

Finally reached the mining area of the mine, from the top of the cave dozens of meters high, the wonderful gray stone is like an artistic photo, it is really beautiful, Zhou Kun couldn't help but admire.

"Go get the tools, and then go to the corresponding area to mine according to the numbers drawn, hurry, hurry!" Chen Ba roared loudly, and the roof of the cave actually vibrated at the same frequency because of this.

The so-called mining tools are nothing more than the most common knives on the earth, and unlike ordinary knives, these knives have a certain dilution function, that is, the things they come into contact with will become soft for a short time.

Is it because these limestones are very hard? Zhou Kun thought about it, but Zuo Lan did not provide these materials.

Zhou Kun glanced at it, and An Lina, who had already started mining in the corresponding area, felt a little uneasy. What the hell is going on?

Zhou Kun and An Lina cooperated with each other to excavate, but it was obviously more difficult than expected, not only because of the hardness of the gray stone, but also because of the loss of pressure and weight, it required more physical strength every time.

Sweat trickled down the suit, and the danger seemed to be getting closer.