The density of neutron stars, that is, the density of atomic nuclei, is the limit of what matter in the universe can compress, in other words, any matter can only be compressed to the extent of a neutron star!

There is no denser matter than a neutron star!

"Neutron star is the densest and hardest substance, for low-level civilizations, neutron star matter is out of reach, and it can only be seen from afar, but for seventh-level civilizations, neutron stars are a material!"

Manta looked at Xue Jun and said slowly: "A perfect material for building warships and casting weapons, this material is neutron star material, also known as atomic nucleus density material, in the universe, for this material, there is also a name, it is a tenth-level material!" ”

"Grade 10 material?" Xue Yan opened his mouth wide: "Isn't the material in the universe only the highest level nine, and there are even level ten materials?" ”

The ninth-grade alloy is the top-notch alloy in the universe, but it also belongs to the category of ninth-grade materials!

Manta explained: "The highest level of materials is indeed level nine, but there are very few seventh-level civilizations that can synthesize more powerful materials, that is, neutron star materials, because neutron star materials are too perverted, so they are not included in the normal material grade category, so the recognized materials are only level nine!" ”

Xue Jun was still a little incredulous: "Neutron star, can it really be used as a material?" ”

"Absolutely!"

The Brute Tower nodded affirmatively: "Not only can it be used as a material, but some extremely powerful seventh-level civilizations can even synthesize neutron star materials according to their own preferences."

It is based on this that there are quite a lot of types of neutron star materials.

You can imagine that if you compress a piece of iron into a neutron star density, you can synthesize an iron neutron star material, and if you compress a piece of copper into a neutron star density, you can synthesize a copper neutron star material, and in the same way, there are so many items, elements, and materials in the universe, and there are countless neutron star materials that can be synthesized, such as iron, copper, silver, aluminum, and so on.

Although the density of each neutron star material is the same, its properties are very different! ”

Xue Jun can understand this, after all, the raw materials manufactured are different, and after compression, it is reasonable that the obtained neutron star materials are different, but I can't imagine how the neutron star materials are compressed?

Neutron stars, which were formed under the action of the great forces of the universe!

How can a civilization be compressed?

I can't imagine!

"The properties of neutron star materials are different, but they all have one thing in common, that is, they are extremely dense, very hard, and far more strong than grade 9 alloys, so they are usually used to make warships or weapons!"

The barbarian tower continued: "The seventh-level civilization will make it into a battleship, that is, a neutron battle star, as well as the weapons used by the seventh-level lifeforms, this silver bead in front of me is a neutron battle star, I just detected, it is a carbon atom mixed with a certain amount of oxygen atoms compressed, so, this is a carbon neutron war star." ”

Xue Jun stared at the silver bead, which was only 3 mm in diameter, and still shook his head in disbelief.

"The larger the nucleus of an element, the stronger the repulsion between the nuclei when compressed, so the lower the element in the periodic table, the more difficult it is to synthesize neutron star materials, that is, hydrogen is the easiest, helium is second, carbon, oxygen, etc. are easier, and when it comes to the later metal elements, it is very difficult to compress!"

Manta said: "This carbon neutron battle star is relatively easy to make, but it is not to be underestimated, do you know, once it launches its power, it can destroy this planet in minutes and seconds, even ordinary seventh-level lifeforms will be killed!" ”

"So horrible?" Xue Yu was taken aback.

"Of course!" The barbarian tower nodded heavily: "Don't look at it as only a little bit, but there is something inside!" ”

"What's inside?" Xue Yu was stunned: "What can such a small thing do?" ”

"Ever heard of space folding technology?" Manta asked suddenly.

"I've heard a little" Xue Jun nodded, and suddenly understood: "Barbarian Tower, do you mean that there is such a big space in this little thing?" ”

"Whether the space is big or not, I don't know, I just know that this thing is equivalent to a space ring, and there must be a certain amount of space in it!"

Manta sighed with emotion: "The fifth-level civilization has begun to set foot in the space field, the space research of the sixth-level civilization has a certain depth, and the space technology of the seventh-level civilization has reached its peak. ”

"Space ring, space folding technology, it's incredible!"

Xue Jun sighed with emotion, these things have just appeared in science fiction, but he didn't expect the advanced civilization in the universe to be able to turn it into reality, it is

"If I'm right, that Cybertron barbarian must have entered the interior of this neutron war star and discovered some of its secrets, which is why we destroyed the ship!"

"It's dangerous!"

At this time, the Dragon King, who must have been staring at the Neutron Battlestar, suddenly roared, his figure flashed, and he disappeared in place, and he didn't know where it went.

"Find out, quick!"

Seeing this, the Barbarian Tower didn't care about the disappeared Dragon King, and hurriedly shouted.

"Good!"

Xue Jun dodged and appeared in the direction where the neutron battle star disappeared, only to see a small hole in the ground, I don't know where it leads, and the neutron battle star has disappeared without a trace.

"Its mass is too big, even if it is only so little, but it is also incredibly heavy, as it smashed to the ground just now, it must have pierced the ground and smashed into the depths of the ground!"

Manta calmly analyzed: "Xue Shu, you follow this small hole now, keep looking down, you will definitely find it!" ”

"Got it!"

Xue Jun nodded, activated the space super, entered the space mezzanine, and then followed the small hole, all the way down to find it, 3 meters, 10 meters, 50 meters

All the way down!

800 meters, 900 meters, 1200 meters

It was only after descending 2,400 meters that Xue Jun found the Neutron Battle Star.

It turned out that the Neutron Battlestar was blocked by a layer of green rock, which was completely different from the dirt above, and could not help but glow green throughout, and it looked crystal clear, which looked very beautiful.

"This is a bioenergy crystal, I didn't expect it to be here!"

Xue Fei secretly praised, and then with two fingers in the depths, he was about to pinch the neutron star, and then pick it up, however, the quality of the neutron battle star was beyond Xue Shu's imagination, and Xue Fei used most of his strength to barely pick it up.

"Hiss"

Xue Jun couldn't help but gasp, a 3 mm neutron battle star was rebuilt like this, you must know that he is now a powerful fourth-level life form, and his strength is unimaginable, he can barely pick up such a small neutron star!

"It's really not ordinary!"

With a whisper, Xue Jun took the Neutron Battle Star out of the underground and returned to the ground.

"Found it?"

"Hmm!"

"That's great!"

The Barbarian Tower was completely relieved: "The Dragon King should enter this neutron battle star and deal with unknown dangers, with its action, any problems will not be a problem, we can rest assured now!" ”

"Brute Tower, can I go in and have a look?" Xue Yu suddenly asked.

"You?"

The barbarian tower looked at Xue Su: "You have a space superpower, it's not that you can't go in, but are you sure you want to go in and have a look?" ”

"Try it!"

Xue Jun nodded, gently put the Neutron Battlestar on the surface of the flying saucer, and then activated the super energy and drilled into the interior of the Neutron Battlestar, however, what he never expected was

As soon as he entered, he heard a rumbling explosion and an angry roar, Xue Jun opened his eyes and saw that he was a little dumbfounded, a sea of fire!

There is a sea of fire everywhere in all directions!

Blazing flames covered the entire space, accompanied by violent explosions, and above the sea of fire, an angry dragon spewed white flames, fangs and claws, and burned everything.

And in the middle of the sea of fire, you can see buildings and alloy instruments

The strange thing is that under this white flame, these buildings and alloy instruments are actually melting, burning, and exploding.

"Ahem, Dragon King, you bastard, do you want to burn me to death?"

Just when Xue Yu was looking at the sea of fire, suddenly, in a corner of the sea of fire, an angry roar sounded, Xue Yu was shocked, and his eyes looked over like electricity.

I saw a tiny person standing on a tall building, who else was it not Cybertron?

"Damn!"

Xue Yu didn't think about it, and swept along the mezzanine floor of the space again, towards the high-rise building.

"Cybertron!" Xue Fei flashed out, picked up Cybertron who was scolding, and escaped into the space layer again, the temperature of the white flame was too terrifying, just for a moment, Xue Fei felt as if his whole body was about to be burned to ashes and melted!

"Xue Shu, are you here?"

Seeing Xue Su, Cybertron was overjoyed, and suddenly threw himself into Xue Su's arms and cried.

"Okay, okay, don't cry, you're also a generation of mechanical emperors, don't be skinless and faceless!" Xue Yu was a little funny.

"Humph!"

Cybertron stopped crying all of a sudden, and scolded: "Lao Tzu was kind enough to save it, and the whole family was going to control the internal core of this neutron battle star, who would have thought that this old beast suddenly rushed in, and without saying a word, it was a destruction, damn, a good neutron battle star, all destroyed by it!" ”

"Was it really dangerous?" Xue Jun frowned and asked.

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