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"What's so strange about this, as long as you are willing to pay attention, in the Wind Spirit Pavilion, there are not a few such classes, and they are quite cheap, one credit, you can watch five class hours. Ye Feng said, this is what he saw when he was classifying subjects. There is a considerable difference in the price of the Fengling Pavilion lessons. The most expensive course costs dozens of credits, and the cheapest is this kind of extended knowledge, which has ten courses per credit.

"Ladies and gentlemen, we've arrived safely, and it's up to you. The captain said politely. A captain, commanding a five-million-ton warship with a crew of five hundred, is even higher than the captain and slightly lower than the commander of the legion, but in him, there is no trace of the arrogance that the power armored corps has.

No way, the space fleet is really not easy to mix.

"Thank you, next time I'll go on a warship, a battleship isn't fun at all. Wuzhu said, taking Wu Xiaoqing's hand, and walked towards the exit where the docking was completed.

The transmission power network, which looks like a cylindrical thing woven with a diameter of more than 30 meters and a length of more than 1,500 kilometers, runs directly from the ground to the space dock, and can run shuttles in the middle, which can transport not only goods but also people.

Sitting in the shuttle and looking down, it is easy for the timid to be scared out of the way. The shuttle will land at 500 kilometers per hour on the surface of the Cave Star, which can be reached in three hours. This is not the highest degree of a shuttle, in fact, such a shuttle can reach more than 2,000 kilometers per hour even on the way up.

It's just that this kind of degree, but the people inside are a little unbearable, so when transporting people, they will press the degree within 500 kilometers.

The Stygian Cave Star Ground Teleportation Station, the 560 Legion that was originally stationed here, has already been prepared. In a neat line, with a power armor box in their hands and a huge backpack behind them, they boarded the shuttle in an orderly manner. The entire transmission power network forms a closed loop, in which countless shuttles flow like weaving, and the transportation capacity is quite powerful.

"I'll leave it to you, be careful, the number of missing people has been on the rise lately. "The commander of the 560th Army is going through the transfer procedures with Liu Shunqing.

"Got it, I've got a bunch of psychics this time. Liu Shunqing nodded and said, the several legions stationed here are all legions under the Third Corps, and the relationship between them is not bad.

"Be careful, I'm gone. "I can finally leave this hellish place, and no one wants to stay for a second longer.

Liu Shunqing opened the portable light brain, looked at the number of jù inside, and frowned.

"I'll see. Wuzhu stretched out his head and said.

The number of missing people in the Stygian Cave Star is constantly increasing, and in the past month, there have been four groups of power armor fighters who have disappeared in the depths of the mining area, and no one is alive or dead.

On the surface of the Stygian Cave Star, communication was normal, and communication was not affected, but in the depths of the mining area, communication was very problematic. This phenomenon has already been reported to the Ministry of Military Affairs and the Ministry of Minerals, and experts believe that this is likely to be related to the large number of minerals on the Hades Cave Star, not the electromagnetic suppression caused by the space-time rift, which has not attracted the attention of the above at all.

No matter what era, cave mining is a high-risk type of work, even if the technology is reached, it cannot solve the various dangers of cave mining, and can only be reduced as much as possible.

It is said that in the era of the mother planet of the earth, in order to mine coal with a pitifully low calorific value, dozens or hundreds of people may die in any accident. In comparison, mineral mining is much safer now.

After all, danger is everywhere, drinking water can choke to death, and going out can be hit by a car......

Compared to the number of deaths due to traffic and various accidents, miners are already a fairly safe occupation.

"Ye Feng, come and see. Liu Shunqing said, Ye Feng walked over, turned on his communicator, and began to receive the message from Liu Shunqing.

The Stygian Cave Star is a newly emerged mineral star, from the present to the mining operation, there are only more than ten years before and after, not even twenty years, compared to those mineral stars that have been mined for hundreds of years, it is nothing at all.

Today, there are more than 200 billion tons of minerals on the Stygian Cave Star, and this is only 150 kilometers deep into the earth's surface, and in deeper places, there may be a large number of minerals.

Since the Mineral Star is not suitable for human habitation, it can be mined destructively, without any scruples, as long as it can be mined in large quantities.

There are more than two hundred and thirty kinds of minerals that have appeared on the Stygian Cave Star, and it is a mineral star with considerable resources.

At present, there are four mining areas and one base management area on the Stygian Cave Star. The base station of the power transmission network where Ye Feng is located is in the base management area.

With the base management area as the center, there is a large mining area in each of the four directions, and each mining area has its own independent living area and multiple mine entrances.

"The 2nd Brigade Area A, the 3rd Brigade Area B, the 4th Brigade Area C, the 5th Brigade Area D, the 1st Brigade and the troops directly under the corps, logistics, medical and support troops, stationed in the base management area. Liu Shunqing gave the first order.

"Yes. "The five captains responded at the same time, although being stationed in the Mineral Star is equivalent to a vacation, but what should be done still needs to be done. What's more, the situation on the Stygian Cave Star is unknown, and it can't be completely regarded as a vacation.

"Ye Feng, what do you think?" After arranging his subordinates, Liu Shunqing turned his head and asked Ye Feng. The Cave Star is a fledgling mineral star, and the situation is not complicated.

"Do a surface search first, and if there are no problems, then search four mining areas. Ye Feng said.

"Well, that's for the best. Liu Shunqing was a little surprised, in his opinion, Ye Feng had not been an adult for a long time, he was still a cadet, and he had not learned a lot of things in the Blue Dot Military Academy, so he was really worried about Ye Feng's coming.

"I'm going to Zone A. Wuzhu waved his hand and shouted.

"I'll go to Zone B. Wu Xiaoyi hesitated and said, she originally wanted to be with Ye Feng. Wuzhu has already chosen a mining area, and she is not good at sticking to Ye Feng.

"No, I can't. Ye Feng shook his head.

"Why?" Maitake asked, puzzled.

"You and Wu Xiaoqing are in charge of surface searching, and Brother Meng Fei and I are in charge of searching for the mining area. Ye Feng said, looking back at Meng Fei.

It wasn't until the Dark Cave Star that Ye Feng saw Meng Fei, and Meng Fei looked at Ye Feng with a puzzled expression, he couldn't figure out how this kid knew about himself?

Meng Fei did not take a battleship, but a troop carrier, and came here with the soldiers of the 599th Legion.

"Why, if there's anything to check on the surface, just let the legion send some people to take a look. Wuzhu said dissatisfied. Since there is a strangeness here, the previous two legion commanders must have sent someone to search, and if there was a problem, they would have found out a long time ago.

"You've promised me before that you'd come here to listen to me. Ye Feng said seriously, in a few years, the Stygian Cave Star will become a high-risk mineral star, although it is unlikely that a large number of blood clans will appear now, but Ye Feng does not dare to take risks.

"It's okay, let her go, I'll follow her. Huang Hai said.

"With us here, Miss will be fine. A middle-aged psychic behind Wuzhu said.

"I'm going to Zone C, but I'm afraid I can't do it alone. Meng Fei said.

"Yang Cheng, you and Brother Meng Fei and Yu Shen go to Area C. Ye Feng said.

"No, I have to follow you. Yu Shen shook his head and said, he came here to protect Ye Feng.

"The two of us should be enough, just send us another batch of power armor fighters. Meng Fei thought for a while and said,

"In this case, it's best to allocate some more manpower to Brother Meng Fei. Ye Feng was a little worried. The current Meng Fei has just reached the level of an ethereal spirit warlock, and he doesn't have much experience.

"That's fine, we have enough people. Yu Shen said, this time he didn't come by himself, and he also brought two spiritual magicians.

"Okay, that's it, go back to the base management area once every ten days, and communicate at nine o'clock every night. Ye Feng said.

In the previous life, Ye Feng had no problem managing a legion, let alone the dozen or so spirit warlocks in front of him.

"Commander Liu, please inform a few captains and send troops to cooperate with our actions. Ye Feng turned his head and said to Liu Shunqing.

"No problem, you can send a team to cooperate with you at a time. ”

"You don't need that many people, two groups are enough. Ye Feng shook his head and said. Meng Fei is better, although he and Wuzhu have the spirit of the heart, the spiritual network that can be formed is very small, and it is not easy to command when there are too many people.

"Boss Huang, Xiaoqing, you pay more attention over there. Ye Feng said with some unease, among all the people, Wu Xiaoqing was the weakest.

"Mind your own business. ”

Sitting on the large transport vehicle in the mining area, Ye Feng took Yu Shen and another spiritual warlock named Tang Yuanhua to the D mining area, and with them, there were two hundred power armored soldiers from the fifth brigade, as well as two hundred logistics and medical personnel.

The D mining area is about 2,000 kilometers away from the base management area, there is no water source on the Stygian Cave Star, there is almost no need to detour, and the large suspension transport vehicle can be driven at full strength to drive to the mining area at an hour of more than 500 kilometers per hour.

Jet suspension technology, which is not a great technology, has been mastered by human beings a long time ago, but in terms of control, braking, etc., it is not satisfactory, and on the Apocalypse, it is almost impossible to use such a power vehicle, so as not to be in danger. On the Mineral Star, there is no need to worry at all.

Four hours later, Ye Feng walked into the D mining area. It is said that it is a mining area, but the area is actually quite large, a fully enclosed mining area built with metal, with a total area of nearly 100 square kilometers.

Countless large transport trucks, rows of warehouses, roughing plants, and living quarters for workers almost fill the entire mining area.

"It looks pretty good, but it's a little less crowded. Ye Feng said that he had the experience of being stationed in the mining area, so he could naturally see what was different.

"Well, you can't be too demanding. Yu Shen said, a little surprised by Ye Feng's reaction, this kid has been to the mining area?

"Hello, I'm Hu Wanyong, the mine manager of Area D, and it's a pleasure to meet you. ”

"Hello, I'm Ye Feng, this is Yu Shen and Tang Yuanhua. Ye Feng nodded and said, observing the middle-aged man in front of him.

He is about seventy years old, which is the golden age of a man, who is in the prime of life and has a lot of experience. From his appearance, he gave Ye Feng a very shrewd feeling. This guy's eyesight is good, he bypassed the captain of the fifth brigade and walked directly in front of Ye Feng.

"Please, the room is ready, the conditions in the mining area are limited, especially the water source is a little tight, please forgive me. Hu Wanyong said.

With a few polite words, Ye Feng followed Hu Wanyong to the living area. It's a sprawling area made entirely of metal. Each room is not small in size, and the facilities inside are quite simple, in addition to a bed, a set of tables and chairs, there is also a separate bathroom. It's just a bit of a hassle to get the water supply, only three hours a day.

Since there is no water source on the Stygian Cave Star, every time the space carrier comes here, it is full of clean water, and when it returns, it is full of rough metal.

"Mine Chief Hu, I want to know a little bit about the D mining area, can I? Ye Feng asked while eating his belated lunch.

"Of course, this is as it should be, our D mining area is the fourth mining area of the Stygian Cave Star, the construction time is relatively short, only less than three years, eighteen mine entrances, a total of one hundred and eighty-three mining operations in the mine, one thousand two hundred and forty-nine prospecting channels, the deepest is forty-two kilometers below the surface, and it is still in the shallow mining stage. Hu Wanyong came as soon as he opened his mouth, obviously very familiar with the D mining area.

"At present, the main metals produced in our D area are, such as high-alloy manganese and nine-valent titanium, of which 41 are strategic metals, the most valuable is A-type memory metals, and there are more than 470 kinds of associated minerals, but the value is not high. Hu Wanyong continued.

"Let's talk about the missing people. "Ye Feng doesn't have much interest in these minerals.

"In our D mining area, in the past few years, a total of 67 people have been missing, most of them are members of the prospecting team, mining operators, except for three accidental deaths, there are no missing people. The previous two legions, which sent a lot of soldiers, went deep into the mining area, and thirty-four people were missing. Hu Wanyong said.

Yu Shenyi frowned, it has only been a few years, and there are more than 100 missing people. If it's death, as long as you know the cause, it's really nothing, and missing or something is the most troublesome.

Don't look at the D mining area is a new mining area, but below the surface, there are thousands of passages, up to dozens of kilometers deep, and it is quite troublesome to explore them one by one. Sometimes, there is another passage just a dozen meters away, or even a few meters away, and if you want to get there, you have to take a long detour.

"A map of the mining area, which I will pass to you in a moment, as well as a map of the distribution of minerals, the area that the two legions have searched before, are marked on it. ”

Ye Feng nodded with satisfaction, this mine manager is quite good, not only is his job very good, but he also thinks about it quite carefully.

Go back to your room and receive the message. There is already a rudimentary network of information exchange on the planet Hades Cave. For this purpose, a considerable number of information exchange transit stations have been invested. Due to the large number of minerals on the surface and underground, the signal is not very good, and every few tens of kilometers, a relay station is needed to strengthen the signal.

In addition to the signal network on the surface and in the shallow depths of the Cave Star, there is also a large space communication relay station in the dock, which can dock with the two nearest mineral stars.

When mankind is heading into space, communication has always been a big problem that plagues mankind's continuous development. At present, the airspace span where human beings are located is not very large, not even 0.1 light year, and even so, the problem of communication cannot be completely solved.

The network composed of countless information exchange relay stations can be seen everywhere in the human four-star airspace, and the problem of signal delay still cannot be solved. As one of the survival stars of human beings and the power of the Apocalypse, it is difficult to get real-time information in the first time.

After eating, Hu Wanyong left, as the mine manager of Area D, he was really busy, and it was rare to be able to spare a few hours.

Ye Feng and the three of them, while checking the information, walked into the warehouse area to check the various metals produced here.

"Is it necessary to do this?" asked Yu Shen after checking a few warehouses.

"Of course, the blood clan is actually quite sensitive to metal, otherwise it would be impossible for blood metal to hurt them. When the metal is filled with another kind of energy, it becomes much more threatening to the Bloodline. Where this kind of metal appears, the Bloods will instinctively stay away from it. Ye Feng said.

Speaking of understanding the blood clan, among the four stars in the sky today, those who can be more familiar with Ye Feng may not be able to find a few.

Even if Huang Hai is like this, the people who have dealt with the blood clan for decades are far from being comparable to Ye Feng. The number of blood clans encountered by the gathering team is extremely limited, where can it be compared to the massive number of blood clans in the blood war?

"Let's go, let's go see the companions. Ye Feng said.

"Whatever you want, just do what you want. Yu Shen said indifferently. Ye Feng didn't know that in Yu Shen's eyes, Ye Feng was more suitable to become a scientist. Scientists naturally possess knowledge and information that ordinary people cannot understand.

The types of companion organisms of metal minerals are often several times more than the minerals themselves, and the vast majority of companion organisms are worthless, and only a small part are useful to human beings.

These companions, on mineral stars, are usually thrown away, saving space. A small number of newly emerged companions will be extracted and transported back to the Apocalypse, where they will be studied by specialized research institutes to determine their value.

On almost every mineral star, new companions will appear, some of which are extremely rare and much more valuable than the mineral itself.

"Huh?" Ye Feng stopped, he was supposed to go to see the No. 2 companion biological warehouse, but suddenly, the spirit sea moved, and the spirit plant kept swaying, looking extremely excited.

Ye Feng felt that the spirit plant seemed to be longing for something. Following the fluctuations emanating from the spirit plant, Ye Feng turned around and walked towards the No. 6 warehouse.

Yu Shen and Tang Yuanhua glanced at each other and followed, as long as Ye Feng was safe, they would naturally not have any opinions on other matters.

"Open the repository. Ye Feng said to the two storekeepers who followed the three of them.

"Okay, this is the latest companion that has just appeared, and when the next transport ship arrives, the samples will be sent back to the Apocalypse. The administrator introduced.

There are more than 400 kinds of companion organisms, but there are only six warehouses for companion organisms. There is no need for useless companions to be in warehouses at all, and the number of companions is usually not too much, and using six medium-sized warehouses is already a bit wasteful.

"Three of you, please come in, this is the latest mineral companion, white fluffy material, is in a mixed vein, this vein has just appeared, because it is more than 30 kinds of metal mixed ore, although the vein is not small, the cost of separation and refining is relatively high, so there has not been large-scale mining. This companion organism is something that grows on the surface of mixed ores, and when it first appeared, it was thought to be a bryophytes, and after preliminary examination, it not only has a bioenergetic reaction, but also has certain metallic properties. The administrator said.

"Is that all?" Looking at the white fluffy companion creature of about ten cubic meters in front of him, Ye Feng asked in a deep voice.

"There are already quite a few, although a little companion can be isolated on each piece of mixed ore, but after all, the number is relatively small. For each ton of mixed ore, about one kilogram of companions can be collected. There are about ten tons of these in the warehouse. ”

"The density is about the same as water?" Yu Shen was a little surprised, the density of metal mineral companions is usually not too high, it looks like a lot, but it is actually very light.

"The standard gravitational density is 1.02, which is basically the same as pure water. The administrator nodded.

"Prepare a ton of companions, send them to my room, I'm going to study it. Ye Feng took a deep breath and said with the throbbing in his heart. Standing in front of these fluffy companion creatures, in the spiritual sea, it was like turning over the river and the sea, the aura was like a dragon, crashing around, and it was not controlled by Ye Feng at all.

Ye Feng knew that this was all the spirit plant in the Spirit Sea expressing its desire, what the hell was this?

Long before coming here, Ye Feng knew that there must be something strange on the Stygian Cave Star, otherwise Ye Chang would not have been stationed here for ten years, could it be that Ye Chang fancied this kind of thing?

"This ......" the administrator had a look of embarrassment on his face, which had already been documented.

"It's okay, I'll talk to you Mine Chief Hu. Ye Feng said.

"Don't worry, boy, I'm here to say hello from the Ministry of Mines. Yu Shen said with a smile, is this little thing worth talking to the Ministry of Mines?

"Let's go. "The movement in the spiritual sea is too big, and for a while, Ye Feng has no interest in other companions, so let's go back and study it first.

Ye Feng's room was very large, and a cubic meter of companions was quickly sent over, and Hu Wanyong signed it directly, and he still had this right.

"What should I do? What should I do?" Ye Feng looked at the companion creatures, not knowing how to start, what the hell is this, what is the use?

"Give it a try. "Take out the carton, pick up a handful of companion organisms, spread them on the carton, sit on it as you usually absorb training, put a blood bead on your forehead, and sink your mind into the sea of spirits.

Within the spiritual sea, the spiritual energy was like a riot, and the spiritual plant swayed left and right in the crazy flow of spiritual energy, and the three spirit beads that had been condensed were scattered with dazzling light. The hemp-like void spirit stretched desperately.