According to the records in the report I got, this mineral with extremely difficult mining is called a magic crystal, which is an overly magic crystal. If analyzed according to chemical composition, this thing is almost no different from ordinary crystals, but according to energy detection, you will find that the internal energy reaction of this thing is extremely high, which can be said to be a very unstable ore.

Although the demonized crystal is extremely unstable, it is not at the point where it cannot be preserved at all, so some demonized crystals can be found occasionally on the ground. However, all the demonized crystals found on the ground are near volcanoes. Whether they are extinct volcanoes or active volcanoes, the demonized crystals only appear near volcanoes. Generally speaking, this distribution means that the demonized crystal is actually a substance that exists deep below, and it is mostly due to the transport of magma when the volcano erupts.

According to the origin characteristics of the Magic Crystal, it can be confirmed that the Dark Review Council should have such ore. After all, the Magic Crystals on the ground are brought from lava, and there are many lava rivers, lava lakes and other things in the underground world. So it is certain that the Dark Review Council should have Magic Crystal ore, but I didn't expect that the difficulty of mining this thing is so high.

The demonized crystals on the ground are said to be mined, but in fact they are basically picking up. The demonized crystals brought to the surface of the lava are solidified into the volcanic rock after the lava is cooled down. Then as time goes by, these volcanic rocks are gradually eroded due to weathering, water erosion and other reasons, and the demonized crystals wrapped in them will be exposed. These demonized crystals are discovered by some lucky people and then become the demonized crystal ore we use. Of course, because now everyone knows that the demonized crystals are from the ground on the lava belt, some people will deliberately dig in the volcanic rock area, but because the distribution of the demonized crystals is not uniform and the stock is very low, the output is basically never higher.

Fortunately, the Magic Crystal is a special material with a relatively single purpose, so even if it does not, it will not affect everyone's normal use. Unfortunately, although the Magic Crystal has a relatively single purpose, the only uses include: enchanting equipment enhancement, artifact production, and the conversion core of super-power energy weapons.

The above three things are basically optional for ordinary players. For example, the enhancement of the enchanting equipment may also require some advanced players to use it once or twice occasionally, but it will definitely not be too many. As for the remaining two uses, it basically has nothing to do with ordinary players, and even some medium and large guilds may not be able to use these two uses. However, the problem is that we are the Frost Rose Alliance, and we are the world's number one guild. If others don't use it, it doesn't mean we can't use it. What's worse is that we can not only use this thing, but also consume a lot of money. The main reason for this consumption is that the magic crystal can be used to make a device called a magic resonator, and this device is one of the core components of the use of mobile angels for the gods.

Our guild used mobile angels to the gods from the beginning, and the cost was amazing. One of the large expenses was this magic crystal. Because the output of this thing was extremely unstable and the market was out of stock, we had to spend a lot of money to expand the acquisition network in advance, and buy it immediately as soon as it appeared, so that we could barely maintain the use of our advanced weapons. It can be said that since our guild started using magic crystal, the supply of this thing has never been enough.

Because we have a considerable demand for demonized crystals and the output of this demonized crystal is unstable, we are very happy that the Dark Review Council can provide demonized crystals. However, what I didn't expect was that we were almost picking up demonized crystals on the ground, but underground was a completely different situation.

According to the mineral information given by the Dark Review Council, the origin of this magic crystal is divided into two types. One is the lava lake and lava river we guessed before. The magic crystals of this kind are much more difficult to mine than on the ground, because the magic crystals here are all at the bottom of the lava river and lava lake. If you want to mine these magic crystals, you have to sneak into the bottom of the lava. In the past, the Dark Review Council used some monsters that survived in lava to collect this thing, but because the distribution of magic crystals in lava is actually almost the same as the ground, although the difficulty of mining this way is only higher than the ground, the output is still minimal. The only benefit is probably that it is relatively stable. No matter what, mining magic crystals in underground lava is still an extremely dangerous job with low returns.

Although it is not easy to mine demonized crystals in the lava river and the yield is not high, this is not the main reason that drives me crazy. The main reason that really drives me crazy is the real high-yield mining area of ​​the demonized crystal - the earth-center black hole.

The center of the earth is not a black hole in the true sense, it is actually just a hollow sphere. The most surface layer of the earth is the crust. This part is a solid crust dominated by rocks, and below it is the mantle. The mantle is not a solid, but a liquefied magma layer. Because the mantle is composed of liquid, there should be no voids inside it. However, in fact, the mantle is not without voids. Just like there are bubbles in the water, there are also such voids in the mantle, but its crust is not a water membrane but a dense layer of crystalline silicon. This layer

Crystalline silicon itself has no value, but it absorbs a large amount of geothermal energy due to its deep underground and forms a large number of demonized crystals under ultra-high temperature and ultra-high pressure. This kind of crystalline silicon shell is protected by the outer shell of crystalline silicon, and the sphere with hollow spaces in the center is the center of the earth black hole. Because the lava in the mantle is very high, it will emit light itself, while the earth black hole is just crystalline silicon, and its heat is much lower than the lava itself, so it is like a black hole compared to the surrounding lava, and the earth black hole is named for this.

In any case, it is certainly true that the geocentric black hole contains a large amount of demonized crystals. The shell of the geocentric black hole is generally only more than 100 meters thick. As long as it penetrates the shell, it will be a mixed mineral layer composed of various crystals that are nearly 30 meters thick. The mineral layer is all filled with crystals and rare metals in the elemental state. It can be said that it is basically money. Considering that the diameters of these geocentric black holes are basically more than three kilometers, if a geocentric black hole can be successfully captured, it will be considered a huge income for our guild. As long as we can capture three or five geocentric black holes, it will be considered a big deal even by our standards.

With such a huge profit, who do you think is not moved? But because of the heart, I am crazy.

Although the game "Zero" deliberately weakens the impact of pressure in sea water on organisms in order to increase the map area that players can enter, most of the equipment in the game have super stress resistance, among which the Knight's helmet also has the effect of a deep-sea respirator. These are all for players to enter the underwater map game. However, although the pressure effect in the game weakens, the effects of other pressures have not been changed, such as the various effects of air pressure on the human body have not been changed.

Unfortunately, the pressure in the mantle is the unmodified part, just like the air pressure. In other words, in the game, the pressure in the mantle will be close to the real data in reality.

According to the mineral mining evaluation report given by the Dark Review Council, the center black hole with demonized crystals generally resides in the shallow mantle layer. The pressure in this area is about 120GPa (Pa is the pressure unit Pascal, and G is the unit G of the computer hard disk capacity, but it is not a 1024 carry, but a 1000 carry, which means that 1GPa is equal to 1 billion Pa).

What is 120GPa? When we are on the ground, the air pressure around us can be roughly considered as 100,000 Pascals, and the underwater pressure can also be roughly calculated as 100 meters of water depth corresponds to 10 atmospheres, that is, 1 million Pascals. According to this calculation, the water pressure at a depth of 10,000 meters is only 10GPa, and the pressure at a depth of 120GPa is equivalent to the water pressure at a depth of 120,000 meters. Of course, there is actually no such deep sea on the earth.

In reality, the deepest water in Shanghai on Earth is the bottom of the Mariana Trench. The depth here is only 11,000 meters. However, even at this depth, there are only a few submarines that can go down, and they are all dedicated deep-sea detection submarines. Conventional military submarines have a problem with the maximum safety depth of only 5 or 600 meters. In other words, if the impact of water pressure on organisms is not reduced in the game, we may be able to move in the game.

The depth of the sea water is only within one hundred meters. But now, we can easily run to the bottom of the sea several thousand meters deep in the game. Of course, players cannot go down in places like Mariana Trench. It is not a problem of water pressure, but a problem of monsters. According to the settings in the game, every time the monster drops by one hundred meters, the size of the monster doubles. Therefore, the depth of the Mariana Trench basically belongs to the Sea Monster Paradise, and players go down to give away vegetables.

If the game does not reduce the influence of water pressure, the depth of 100 meters will be the limit of players' diving, and the pressure in the mantle is completely unmodified. To obtain a black hole in the center of the earth, you have to go down to the mantle with a pressure of 120 GPa. This pressure is equivalent to a pressure of 1.2 million kilograms per square centimeter. How big is one square centimeter? A two or three-year-old child has spread his palms more than one square centimeter. Applying a pressure of 1.2 million kilograms on such a small area will exceed the power that any weapon in the world can produce. In other words, if you can even withstand this pressure, even if you are directly hit by a nuclear weapon, you will be able to survive safely without considering high temperatures and nuclear radiation.

How about it? Isn’t this defense very awesome?

In fact, the troubles are much more than that. In addition to the pressure of 1.2 million kilograms per square centimeter, there is another problem that is the average high temperature of 3,000.

Don’t think that the magma that ejects from the ground is very hot. Compared with those in the mantle, the ones that flow to the ground have actually been cooled. Therefore, the temperature in the mantle is definitely a huge problem. My armor can indeed withstand the high temperature of more than 3,000 degrees, but the problem is that the mining equipment is not my armor. You must know that my Dragon Soul suit is the top even among magical artifacts. Do we need to build a set of artifact-level mining machines to mine? This investment cost is probably greater than the value of ore. Besides, it is unknown whether the system settings allow mining machines to be made into magical artifacts. After all, I have never heard of anyone enchanting mining equipment before, that is, even attribute equipment-level mining equipment did not exist before.

Although ultra-high temperature and ultra-high pressure are troublesome, they are still dead objects. There are always ways to overcome them by spending some effort. But there are still some problems that cannot be solved.

First of all, the mantle is not a fixed lump, it is a viscous liquid that can flow. This creates a positioning problem. The center of the earth's black holes are not at the junction of the earth's crust and the ground. They are actually located a little bit above the middle layer of the mantle. From the Earth's profile, this place is actually quite close to the earth's crust, but that is the Earth's profile. In fact, the distance from the earth's crust is very far away. Being able to stay in the mantle is already a big problem for us, and we also need to locate it. This is simply a matter of life. Even at the sea, you can still rely on the sun and stars to locate it.

, However, in the mantle, the surrounding area is full of opaque magma, and the visibility is basically zero. Although it is not very dark, I still can't see my five fingers. Although the lava will glow, it is not translucent itself. This is definitely a very annoying problem. Of course, using the teleportation method to return to the ground is also a good method, but there is still a small problem, that is... how do you take out the scroll in the lava and unfold it? Anyway, the teleportation scroll I know is made of wood and monster skin, and it can be burned by lit fire. There is basically no need to consider the lava, and it will turn into ashes after touching it.

Even if the positioning problem is solved, there is another problem that is the detection problem. The geocentric black holes are not everywhere in the mantle. Although there are quite a few, it is not that easy to find them. The geocentric black holes drift around like bubbles in water in the mantle, so their location is not certain, so it is very difficult to find them.

Even if we solve the problems of high temperature and high pressure, return and search, there is still the fifth problem - carrying.

A black hole in the center of the earth is a hollow sphere of more than three kilometers. Its shell is extremely strong. In order to ensure that the demonized crystals and other ores wrapped inside will not be lost, we cannot smash it in the ground. Once its compressive structure is damaged, these things will collapse, and the minerals inside will dissolve quickly in the lava, so we will not get anything. However, if the shell is not destroyed, we will not have any space equipment to put it in. Even if the phoenix dragon space has such a large volume, the entrance is not that big, so we can't stuff this kind of giant into it. Then, if it cannot be stuffed into the space equipment, we can only drag it as a whole. It goes without saying that it has to drag a sphere with a diameter of more than three kilometers in a diameter of moving in the magma. It goes without saying that this difficulty is not like a human being.

None of the above five questions sounds like impossible tasks, but that's not all.

There is a saying that there are rivers and lakes where there are people. The game system obviously uses this sentence flexibly. The system sets the players for players: there are monsters where there are players. No matter how many places where there are birds and eggs, there are no life forbidden areas or creature deserts, they cannot stop the monsters. As long as the players can reach the place, monsters will definitely have a way to settle there. Just like the Mariana Trench, where players rarely go down, is not only not a life forbidden area, but a monster paradise.

Considering that you have seen monsters inhabiting lava many times, it is basically a foregone conclusion that there are monsters in the mantle. Moreover, according to the system's consistent rules, the more difficult the area for players to reach, the stronger the monster will be.

In fact, this setting is also normal. Areas that are difficult for players to reach indicate that the environment here is harsh, and those who can reach that kind of place must be advanced players. In an area where only advanced players can reach, what will the players who have put a bunch of fish monsters there and go through a lot of hardships to get there? Therefore, in order to implement the system's purpose of tailoring the corresponding monsters for each player, any special area that can be reached by advanced players will inevitably have powerful monsters that can be dealt with by advanced players. Of course, there are also many monsters that can deal with advanced players in reverse.

Based on the above situation, if you need to mine a center of the earth, you must face a pressure of 1.2 million kilograms per square centimeter. In lava of more than 3,000 degrees, you will encounter a center of the earth with a god-like luck. Then you will drag this huge object of more than three kilometers to swim dozens or hundreds of kilometers in the mantle and accurately return to the dividing point between the crust and mantle. Finally, you must seal the entry channel, then smash this thing, sort out useful ores and put them into the phoenix dragon space, which is considered to be a completion of the task. Of course, during this whole process, you will also have to face super monsters that may appear at any time. Not only will you not be killed by monsters, but you must also be careful not to let the monsters destroy the center of the earth, otherwise everything you did before will be in vain.

After reading this series of requirements, I was almost going crazy. In this environment, let alone machinery and equipment, it seems that only Kris Dena can go on a walk in our guild. Moreover, it is limited to going on a walk. As for how to find and bring back the black hole in the center of the earth, it seems that we can't do it.

"President." After reading this report, the player in charge of machine design said: "We really can't produce such equipment! The environmental requirements are too harsh. It is impossible to accept the requirement to mine minerals directly in the mantle!"

I thought for a while and said, "You design other equipment first. I'll come to see someone to see this thing. If it really doesn't work, you won't need to make it. At worst, we only need to use the ones in the lava river. Just a little less, it's better than nothing!"

"Since that's the case, let's design other equipment first."

I sent the person in charge here and I took this thing to find Woma. As the technical director of our guild, Woma knows a lot. If she can't even think of a solution, then we can basically say goodbye to these minerals.

With the help of communicators, I quickly found Woma, the super flying ship that was supervising the guild in Steel City.

"Hey. President, why are you here? Want to see the construction progress of the air mother?"

"No, I'm having some technical problems and I need your help to think of a solution."

"What kind of difficult problems? Let me take a look first." Woma is engaged in research, and of course it takes rigor as the main quality. She will never make any promises without knowing the situation.

I directly took out the mining requirements for the black hole in the center of the earth, and compared it to the major problems mentioned before.

Woma was similar to me at the beginning, and I was frowning by this information. "This center of earth black hole is of great value, but this mining is too difficult, right?" Woma said while handing me back the information: "Mining a center of earth black hole in the mantle is almost equivalent to doing planetary drilling. Thanks to this game, in reality, this is basically a technology of the universe's development level. You must know that in reality, we have not even been able to launch detectors into the mantle so far, but you have to go in and mine such a large mineral, which is simply a dream!"

"Is it really not possible?" I asked with some disappointment.

Woma shook her head, which made me feel very disappointed, but unexpectedly what she said was: "It's not that there is no way at all, but it's definitely not possible to rely solely on machine mining."

"Oh? Tell me what the specific situation is?"

"I can't tell you clearly here, come with me."

Under the leadership of Woma, I came directly to Cambridge of this air mothership. There is a magic projector that is exactly the same as that of Aisinger's conference hall. You must know that this three-dimensional three-dimensional imaging technology is very troublesome even if it is based on magic, otherwise we would not have set it up only in Aisinger. I didn't expect that this ship would be equipped with it. But thinking about how big this thing is, it will definitely be a fleet flagship in the future. Installing such a three-dimensional display system will indeed help the commander's command decisions. After all, this is a flying ship, and the battle is definitely three-dimensional. The floor plan marked with sea charts is obviously not very suitable for the command needs of this kind of warship.

After entering Cambridge, Womao allowed the workers who saluted us to continue their work, and then turned on the imager and connected the imager to the God of War.

The reason why this kind of imager is not popular is that it is very troublesome to operate. It is rarely used by players. It is also a big problem to master it flexibly, so there is no one to use it. However, because we have a military god like this, this is not a problem for us.

After the God of War said that the connection was completed, Woma immediately said: "Give me a diorama build."

"clear."

After the God of War confirmed, Woma started to reach out and pinch a light spot displayed in the air, then pulled it to both sides with both hands, and the false light spot formed by the projection was immediately pulled apart and turned into a straight line. Then Woma quickly pinched and pulled it here and there, and soon made a columnar object with a hexagonal bottom. In this area, the God of War always lets those virtual parts change with Woma's gestures, just as if Woma was pinching a real object.

This three-dimensional modeling assistance system has actually existed for a long time, but this is the first time I have seen it in the game.

The shape of the column made by Woma is quite beautiful. Although its base is hexagonal, it is not a regular hexagonal. This base looks more like a triangle because it has three unconnected sides that are very long, while the other three unconnected sides are only one-tenth of the length of the three long sides. Therefore, if you don’t pay attention, you will feel that the column looks like a triangular column, but in fact it is a hexagonal prism.

After completing this object, Woma started to demonstrate it to me. She first pointed to this thing and said, "This is the mining machine you want. Of course, this is a miniature image. The real object should be much larger than this. The diameter of the circle on the bottom surface may be about five meters, and the length should be close to twenty meters."

"But how to mine something like a pillar?"

Woma directly pulled the front end of the thing, and a gate opened automatically. At the same time, Woma introduced: "There is an openable movable door at the front end of this mining equipment, and there is an ultra-high frequency oscillator hidden in the door. The external structure of the equipment itself is close to a triangle, which is conducive to increasing structural strength. The surface of these shells is not flat, but slightly arched outward, so that an absolute pressure-resistant structure can be formed to keep it stable under pressure. Of course, stability is not enough. In addition to stability, it also needs to be strong against pressure. My idea is to use magic technology. The outside of the equipment will be covered with fire element absorption arrays, and use the high temperature of more than 3,000 degrees in the mantle as energy to form a stable support force field. This force field will support the entire equipment against pressure."

“Is it possible?”

Womao looked up and shouted, "God of War, do the energy conversion."

The War God responded instantly: "The energy generated by the high temperature of three thousand degrees is converted enough to support the pressure of 120G Pascals, but the energy flow of the conversion device will be very huge. We need a very efficient energy conversion device, and general equipment will not be able to withstand this high temperature. At the same time, because it is impossible to dissipate heat in the deep mantle, this also requires very strict requirements on the equipment itself."

Woma nodded and said, "I have already thought about this. I have used the thermal energy conversion to form a supporting force field, and then use the magic crystals stored inside and the energy converted from excess heat as the power source for internal cooling. However, this also requires a small water element circulation system. Water elements cannot be absorbed in the mantle, so the water elements lost must be absorbed back, otherwise the energy cycle cannot be completed. We will have a dedicated element energy separation device. If it is slightly modified, it can become a water element constraint array, and then the internal equipment can be cooled stably."

"But this only solves the problem of the equipment. How do you mine the geocentric black hole? You might as well want to use an oscillator to smash the geocentric black hole? There are more than 3,000 degrees there. Your oscillator can only melt for three or five seconds at most. Moreover, the geocentric black hole will completely break after it is crushed, and the internal ore will quickly dissolve in the lava. How do we collect it at that time?"

Woma said calmly: "Please look at the gate I just opened. This gate will only be opened after the front end of the equipment is pressed against the center of the earth, and then the high-frequency oscillator will start. However, this oscillator uses a special structure and will not completely smash the center of the earth. According to the data, the shell of the center of the earth is crystal, so the oscillator's destruction effect on it is very obvious. Although our oscillator will dissolve in just three to five seconds, it can break through the shell of the center of the earth in just one second. Note that it is only broken down, not crushing. According to the principle of pressure equilibrium in the mantle, even if the inside of the earth in the center of the earth is hollow, it cannot be at the same pressure as the ground. So I judge that the internal pressure should be consistent with the average pressure in the mantle, so that it can exist stably in the mantle."

"But so what?"

"How? Don't you understand this?" Woma asked me back.

I was just stunned for a moment, and then suddenly I understood. "Are you going to use vacuum compression to suck out all the things on your face?"

"That's right." Woma said excitedly: "The oscillator emits an oscillator will lose the power to break through the opposite shell again due to the change of frequency. However, the shock wave will not disappear, but will be reflected multiple times inside the black hole in the center of the earth until the energy is exhausted. This reflection will resonate, which is enough to destroy the fragile crystal structure. Because the minerals inside the black hole in the center of the earth and the demonized crystal we need and the outer shell are not a substance, the adhesion must be weak, and the fracture must occur at these connection points. Then, these internal

If useful ores are completely separated from the shell, there is only one atmospheric pressure inside our equipment, while the pressure inside the geocentric black hole is as high as 120G Pascals. At this time, the geocentric black hole will spray out all the air inside and ore that has broken out from the outer wall like a volcanic eruption, and then be sucked into our equipment. Although this eruption method cannot completely absorb all ores, it can at least 80% of the ore. The remaining part will disintegrate and melt in the mantle due to the loss of pressure in the shell."

I nodded and said, "It sounds like it has solved a lot of problems. But the diameter of each of the geocentric black holes is more than three kilometers, and the thing you designed is only so big. It may be quite large for us, but for that geocentric black hole, I guess it will be filled if I can't even fill the ore of a geocentric black hole, right?"

"No, no, no. You are wrong." Woma explained: "We just need a device that can withstand pressure, and then you can open a space entrance inside the device. After the ore enters the device, all the ores will enter your space. At the same time, when the device is closed, the gas in the space of the phoenix will return to the normal air pressure. At the same time, you can let your phoenixes reach the front of the device to repair the dissolved oscillator. Although the oscillator also has a cost, the value of these ores is too cheap. In this way, you can mine the earth-center black hole without limit before your oscillator is used up. Moreover, when you are ready to return, you can open the space channel outside the device. The pressure in the mantle will naturally push the device into the phoenixes space. As long as you pay attention to the closing time, you can avoid the problem of lava entering."

I nodded and said, "This solved most of our problems, but there seemed to be some small problems that cannot be solved. First of all, when the equipment goes down, it seems that only people like Kris Dena who can resist the environment in the mantle can take the equipment together. And the monster problem has not been solved. Oh, the problem of finding these earth-center black holes and returning has not been solved. Although the equipment can be stuffed into the Phoenix Dragon Space, how should we come back?"

"I don't think you can go down the issue. After all, the equipment always needs people to operate, so even if you don't need you, you need to be able to withstand the high temperature and pressure there. Fortunately, one ore mining of the ore of the geocentric black hole is one, and you can go down and find three or five at one time, and you won't need to go down for a long time after the collection. As for the problem of finding the geocentric black hole, I think you can try to install a sonar detector on the equipment. The interior of the geocentric black hole is empty, and the outer shell is crystal, and the echo signal must be very special. Although the density of the mantle is too large, such a detection distance will not be too far, I think it can at least greatly increase your detection range. There is also the problem of returning, I think this is the simplest."

"Simple?"

"Yes. You just need to leave a magic pet on it and come back with telepathy."

"Oh, I forgot this!"

After seeing that I passed this view, Woma continued: "There are still questions about monsters. I really have no way to do this. You can only fight monsters below. It is already the limit for me to make equipment that can mine in the mantle. We cannot make any combat equipment work in the mantle at the moment. Moreover, I suggest that if you encounter monsters, it is best to use melee combat."

"Why?"

"It's very simple. The mantle is liquid, and the crust is not a complete whole. The entire earth's crust is floating above the mantle, like a boat on the water. What would happen to your boat if you row a boat on the sea and then two whales fighting under the boat?"

I immediately realized when I heard this. If I use large-scale skills in the mantle, maybe every move will cause a large-scale earthquake, or even plate changes or land sinking. After all, the mantle itself is flowing, and any interference from us may be amplified or covered. If it is covered, it will be fine, but if it is amplified, the result will be difficult to calculate.

"Okay, this problem will be solved. Just inform the designer of what I just said. If you don't understand, just ask him to ask me directly through the War God."

I nodded and said goodbye to Woma, back to the institute and notified the person in charge of mechanical equipment design and manufacturing. After the other party fully understood Woma's design ideas, I asked: "How long will this thing take to be completed?"

"Since all the drawings are out, the manufacturing is very fast, it only takes half a day to do it. But President, you give us so many equipment orders at a time, which one should we build first?"

"Let's get this designed by Womao first, and you can do whatever else. You can produce it in the order of ore value from high to low."

"Okay, then I'll have a plan."
To be continued...