The sound of the table collapsing startled the little girl. Her eyes furrowed, and tears rolled down her face.

But Yuki can't take care of the little girl now. He exclaimed, "Master, how did you do it?" ”

"I didn't do it, the sword did it." Xiang Shan shook his head and bent down to observe the incision. The incision was at the very beginning—that is, near the point where it made contact with the blade—and the cut was as smooth as a mirror, as if it had been cast directly.

But the more this slash trail extended, the rougher it became. The end of this mark is close to a torn wound.

Just the result of a light knock.

Xiang Shan knew that this sword was more powerful than that.

The direction in which the slash mark extended was the same as the direction pointed by the blade.

But when he slammed his sword lightly against the table, he deliberately staggered the direction of his strength from the direction of the blade.

If it's a really hard slash, then this blow will cause the blade to curl.

The direction in which the sword mark extended, but not the direction in which he exerted his strength,

It's just the direction of the blade.

In other words, this trace has nothing to do with him, it is purely the effect of the sword itself.

"Sonon Knife." Xiang Shan nodded.

Phonons, quanta of sound waves.

From the point of view of the extension of the "particle-wave duality" of light, a kind of "wave" can appear particle-like under certain conditions. The "phonon" is the form of quantization of sound waves and mechanical waves under certain conditions.

Phonons are the collective excitation of atomic (or molecular) vibrations in condensed matter and are often used to describe a type of quasiparticle that oscillates in a crystal lattice. It can only exist in crystals. Moreover, phonons are not conserved, they decay spontaneously, so they are also called "quasiparticles".

In short, phonons can be seen as a quantized manifestation of the collective motion of extremely interacting atoms within a crystal.

The phonon knife uses a sword-shaped generator to gather vibrations to the extreme and create sons. At the point where the phonons pass, the powerful energy will disintegrate the lattice structure of the alloy.

This is equivalent to an upgraded version of "high-frequency oscillation wave disintegration metal", but the vibration frequency and intensity of the phonon knife are not comparable to the high-frequency oscillation generator of Longconi's prosthetic hand.

Because this oscillation frequency is so high, it is difficult to find a suitable material to use as a connection between the sword phono generator and the hilt.

That's why I chose to use "magnetic levitation" to fix the blade.

Yuki gasped, "That's amazing...... That is, with a slight knock, the armor will be cut? ”

Xiang Shan shook his head: "It's not that easy. The limitations of this sound knife are not small. First of all, you need to know the crystal structure of the alloy used in the opponent's armor. The reason why I was able to cut this table easily just now was purely because I had a certain understanding of this civilian alloy material. If you don't know the structure of the crystal, you can't set the corresponding parameters. Then, the phonon knife is just a stronger high-frequency blade. ”

At the beginning, Xiang Shan had already overwhelmed the dead corner behind Glyad, why did he allow Glyard to force a few words?

It is because he has to determine the structure of the opponent's outer armor by tapping, and find the most suitable mechanical wave frequency to destroy the enemy's outer armor.

And the Phonon Knife will only have higher requirements for this.

And if you are dealing with amorphous things, such as glass, asphalt, etc., then the phonon knife is even inferior to ordinary knives.

"Then, there's another shortcoming of this thing......" Xiang Shan looked at the huge shield with a depressed expression: "It's really expensive......"

The immediate effect of the phonon knife is inseparable from the remarkable structure of its blade at the microscopic level. It can even be said to be an atom by atom.

It is this rigid structure that ensures that the moment the blade comes into contact with the metal, the energy stored on the sword body by the magnetic levitation device can be converted into phonons in the shortest possible time to destroy the lattice structure of the metal.

The number of times such a blade can be used is actually very limited. It can be said that every time it is activated, the sword body is equivalent to suffering a deterioration.

Not only that, but if the blade of the sword is hit from the side, it will also be damaged.

In the same way, the requirements for "knife tendons" are also incredibly high. The so-called "knife tendon" or "blade tendon" means that the "direction of the blade" is the same as the "direction of the arm force". The "tendon" is not right, or it is easy to roll the blade, or it is impossible to split the target. The requirements of the phonon knife for "knife tendons" have basically exceeded the limit of the physical accuracy of natural people.

In addition, if the target is not hit within 200 seconds after switching to the "High Frequency Vibration Mode", the energy stored inside the sword body will accelerate the deterioration of the sword body.

All of the above is simply ......

This death-expensive blade is essentially a consumable.

"The reason why the sword body is made into a magnetic levitation fix, in addition to the 'difficult to find fixed materials', the more important point is 'easy to replace'." Xiang Shan looked at the shield and said, "Why is this shield so big...... Because the inside is all replacement sword blades. ”

Yuki was directly stunned: "Doesn't this mean that this thing is very ...... Useless? ”

"If the intelligence work is done well, this thing can even tear through the outer armor of a battleship." Xiang Shan shook his head: "Compared to this power, these flaws can be ignored." ”

But......

- To be sure, this is the weapon used by the government's eagle dogs. That's what the design idea is.

- The weapons used by knights generally do not engage in this kind of expensive replaceable sword body.

- If the government is still the same virtue as before, the individual can call on resources according to the level...... The cost of this sword is also higher than the prosthetic body of the welfare officer's many pro-soldiers.

- Able to obtain this kind of material from the government and use it to reward bandits of the level of Glyard. What kind of path is this worm?

Yuki felt that it was a pity: "Since you can't use it Master, isn't it a waste?" ”

Xiang Shan shook his head: "Not really. If my prosthetic body can get more powerful legs and feet, and then use the counterweight to move the prosthetic weight downward, then I can also make this shield. Although it has a load, the shield can also slightly improve the aerodynamic appearance. With tactical cooperation, it can play a decisive role. ”

Yuki nodded: "But it still doesn't need ...... right now"

"There's really no place for this thing in the 'donkey', but it can be made into a trailer and put in the back."

Xiang Shan thought for a moment, got the thing out like it, and then rebuilt a low trailer and placed the shield on it. This trailer is more rudimentary than a donkey, with only a trip stat and automatic steering. Xiang Shan now just wants it to go to the "donkey" side by itself, but he doesn't expect it to automatically avoid the enemy like the "donkey", he just asks it to go to the donkey's side first.

After giving away the treasure blade, Xiang Shan read the secret books of the Demon Cult again.

In the meantime, he gave Yuki some foundation in mathematics and engineering.

A few hours later, Xiang Shan roughly understood the Demon Sect's train of thought.

It was about the same as he had guessed. Since the human brain still has structural advantages that computers cannot match, the Demon Cult focuses on exploring how this mathematical advantage is formed and generated, and how to use brain modification to expand this advantage more deeply.

Among them, Glyard represents a direction.

As we all know, humans, as well as other mammals, basically rely on the neocortex to think.

There is no neocortex in sauromorphs-birds, but the striatum, which has evolved since the time of the dinosaurs, also has some functions similar to neocortices. High-IQ birds such as crows are not even inferior to primates in intelligence.

At the same time, the ganglia of cephalopods/subclasses are actually quite potential. Octopuses also have an outstanding IQ.

The Demon Cult that came into contact with Glyard, the "Envoy under the Command of the Water Worm", was in charge of the project of the "Cephalopod Ganglia".

That is, by creating a structure similar to the corpus callosum, a cephalopod ganglion network with independent thinking ability is connected to the human brain, making it a part of the human "whole brain".

Of course, how the "cephalopod body" that can be connected to the human brain without triggering any rejection reaction is not known to Glyard and his party. What they have obtained is the "organ disk" of the cephalopod limb - a structure similar to the "adult disk" in the larvae of completely metamorphosed insects, which can be regarded as the "seed" and "embryo" of the "organ".

Glyard was only given a reconstructive operation.

According to the plan of the worm, Glyard will have to go through a lot of mental training, run some internal skills used to test the performance of the biological brain, and so on.

If they hadn't met Xiangshan.

Xiang Shan breathed a sigh of relief. There are indeed various techniques for brain surgery, and they are not the standard of "just enough".

The Demon Cult is indeed very serious about exploring the boundaries of human brainpower.

"That girl's illness can be saved." Xiang Shan breathed a sigh of relief.

I just don't know if it's too late.

He could only stay here for two more days at most. Two days is probably not enough time for him to absorb this knowledge and design a feasible surgical plan.

Xiang Shan turned his attention to the last item sent by the Demon Cult.

It is said that this is the memory of the so-called "reopening the world and calling itself one". The little poisonous insect didn't load these memories into his hard drive, and Xiang Shan didn't know what was recorded in it. But the little poisonous insect is very fanatical about this memory.

It does seem to be something that will have an impact on memory. After comparing Glyard's memories with the little poisonous insect, he found that after the little poisonous insect got the contents of the hard drive, his whole person changed, and he became more and more obsessed with studying demonic techniques.

This is not to be careless towards the mountain.

Still, it's still worth watching.