On the other hand, Leo and the others have repeatedly performed more than a dozen fine dissections on the demon in the past few days, and each time when it finally recovered, it was Reggier who re-stitched the dissected things and stuffed them back into the body, and then carried out preliminary treatment with medicinal potions, and then quickly returned to normal with the demon's self-healing ability.

After more than a dozen repeated dissections, they have mastered the detailed information of various parts of this demon's body, and through various tests, they know what this demon is particularly sensitive to, what is particularly disgusted with things, what things hurt him the most, what parts are his Achilles' heel, etc., the demon's body has almost no secrets for them.

Leo's actions were always watched by Geralt, and in his opinion, they were more like demons than the demon, especially when he fed the demon, and when the demon begged him to kill him, he suddenly felt an inexplicable absurdity.

In all the books he had seen, the demon was the most vicious existence in the story, but now this demon was asked by Leo and others to ask him for help to commit suicide, even if he said this kind of thing, I am afraid no one will believe it.

However, he didn't kill him as the demon had hoped, not only because he didn't think the demon's words could be trusted, but also because Leo was right next to him and didn't give him any chance to do so.

"Now all the places that should be dissected have been dissected. Aalto sorted out the autopsy materials in his hand, turned his head to look at the demon who was slowly recovering, and said, "What are we going to do next?"

"No, it's not done yet, there's one more place we haven't studied yet. Leo retorted to Alto's words, then walked over to the demon's head, put his hand on his head, and said, "We haven't studied the demon's brain yet. ”

"What's there to study about the brain?" Aalto and Regier asked, looking at each other, puzzled.

Nowadays, the world believes that human thoughts and emotions originate from the heart, and the brain is just an organ that controls the body to make various actions, just like the muscles in the body, and there is not much need for research.

"No, the brain is the most critical organ," Leo said with a smile as he looked at the demon, "All the anatomical studies we've done before are to better study his brain. ”

When the numb demon, who had already been tormented, saw Leo's smile, a look of fear reappeared in his eyes, and tears were in his eyes.

Unfortunately, his tears were clearly in vain, and Leo lifted the demon up and placed it on a chair that he had prepared earlier, fixed its body and head completely, and then stuck it on it with a hollow wooden board that fit perfectly with his skull, and fixed it with a bracket, which allowed Regiel to remove the demon's skull.

Looking at the brain in front of him, which was very different from the human brain, Leo began to re-examine the experimental plan completed in the past few days, in case there was anything wrong in it.

In the beginning, Leo did not expect to be able to ask for information about the Abyss from the demon's mouth, because according to the memories obtained by the Abyss Serpent's eyeball, it was impossible for all the knowledge about the Abyss to come out of the mouth of the abyssal creatures, and he could only steal a part of the abyssal knowledge through special methods like him.

So, when the demon said that he could not tell Leo anything about the abyss, Leo took his word for it.

It's just that the demon can't reveal the secrets of the abyss just because of some unknown power of the origin of life, but that doesn't mean that he can't tell it, just like Leo obtains the abyssal knowledge from the abyssal serpent's eyeball and Sylvia from his own bloodline, as long as the demon passively says it, then there will be no problem.

In the Earth Federation, in order to obtain the intelligence of various alien civilizations, a set of very perfect methods for obtaining information has been developed, including the control method for the brain of alien creatures, which can find out the thinking control center of the brain of alien creatures through a series of regular tests, and then ask the aliens about confidential things through the psionic control center.

Although Leo is not a member of the specialized intelligence department, he has also learned this method of targeting alien brains from the intelligence department because of the needs of some of his missions.

Through his research a few days ago, he has repeatedly tested the demon's endurance, and has also mastered the demon's body structure, through these data, to further understand the demon's general brain structure, and then apply that set of test methods to develop a set of test plans.

Neither Regill nor Aalto knew much about Leo's actions, and they couldn't help them, so they could only make notes on the side as Leo instructed.

After repeatedly confirming that there was no problem with the plan, Leo began to use psionic energy to stimulate the first test area formulated in his plan, and with his psionic stimulation, the demon's body instantly expanded, turning into the monster he saw at the beginning, but the demon's head was still the size of a human head, plus there were no limbs, so the whole person looked extremely weird.

Although the demon's body has become larger, it does not mean that he will be able to break free from comfort, and the traps placed around by Leo will be instantly activated, forming chains and imprisoning him, and Leo will also take back the psionic energy that stimulates the area.

Losing the psionic stimulus, the demon's body quickly shrunk back, and the chains turned into rune traps were also retracted, and he sat on the fragment of the chair that had been crushed by his body just now.

Although there was an accident, the results of the test were very satisfying, and the mystery of the demon's transformation was found in the first test.

Regier and Aalto also looked at Leo in surprise, obviously they didn't expect to be able to find such an important thing in the first test, they were all stunned on the spot, until Leo reminded them, they hurriedly recorded the number of a brain region delineated by Leo, and the results of the test just now.

At the same time, the demon who remained absolutely conscious was completely shocked, he didn't know why he had changed just now, looking at the expressions of the others around him, and then Leo's words urging them to record the test results also made him realize that his transformation was caused by Leo.

This matter was simply crazy in the eyes of the demon, completely subverting his demonic career for so many years, he never knew that the demon transformation could be controlled by others, which made him suddenly think of Leo's smile, the kind of smile that made him feel terrified, and he suddenly felt that he might not be able to accept the mysteries of the abyss for long.

Just when the demon was panicking, he suddenly opened his mouth and sang a song that sounded harsh, although it was harsh and unpleasant for ordinary people, but for the demon this song was his favorite song, he didn't want to sing it at all, but he couldn't do anything to control it.

Subsequently, under Leo's continuous testing, he found special brain control areas one by one, and he analyzed and compared these regions according to the methods of the Earth Federation, and tested his core brain control areas little by little according to his assumptions.

After about a day of trying, Leo finally found the control area he was looking for.

When he used his psionic energy to control that area, the demon's whole person became as sluggish as a puppeteer, and this look was naturally very familiar to Leo, so he tentatively asked a question, "What's your name?"

As his question was asked, the demon who would not answer any question immediately began to utter a series of strange words that sounded like he was roaring.

Leo smiled when he heard this sequence of completely incomprehensible words, as he knew that he had succeeded, and Aalto and Regier, who had been watching from the sidelines, also realized that Leo had really controlled the demon.

As Leo withdrew his psionic energy, the demon immediately returned to normal, and he still retained the memory just now, looking at Leo with great fear and said: "The abyss of sin is above, you are the demon, you are the real demon!"

Leo paid no heed to the demon's fear-filled cries, he was now frowning, not knowing what he was thinking.

"Aren't you already in control of him?" asked Regier puzzled, "Just ask him, that's the question you want to know,"

"If only it were that simple!" Leo shook his head and said, "Did you understand what he was saying?"

Regiel shook his head, while Aalto looked thoughtful and said, "You mean you control him, and when you ask him questions, he will answer you in his native language, not in our language?"

"Yes. Leo nodded, turned to look at the demon and said, "So if I want to know about the Abyss from him, I'm afraid I need to learn the Demon Language of the Abyss." ”

"What is the Abyss, and how can someone as powerful as you be so attached to it?" asked Regiel, who had been curious for many days.

Leo looked at Regiel with great seriousness and said, "You'd better not know about the abyss, because when you know some secrets of the abyss, the abyss will also discover you, and it will have an inseparable connection with you, which will no longer affect you all the time, and finally pull you and your soul into the depths of the abyss." ”

Regiel couldn't help but ask, "If the abyss of sin is so terrible, why are you ......?"

Leo smiled with great confidence: "Quite simply, the abyss that is very dangerous for you is safe for me. ”

The demon looked at Leo, smiled fiercely, habitually showed the teeth that had just grown, and said, "Impossible, as long as you come into contact with the abyss, you will definitely fall into the abyss in the end." ”

"Really?" Leo leaned in front of the other party, and then raised his hand, channeling a trace of the power in the abyssal serpent's eyeball to disperse out of his body.

"You ......" When the demon felt the aura of the power of the Abyss Serpent, his face immediately showed a look of panic, and his eyes looking at Leo were also full of incredible emotions, as if he had seen a strange object that he had never seen before, and he couldn't even speak.

However, Leo no longer gave him a chance to speak, and here he used his psionic energy to control his central control area, and then asked Alto and Regier, "Are you interested in studying the Demon Language?"

Hearing Leo's words, Aalto naturally agreed immediately, but Regier shook his head, saying that he was a little tired these days and wanted to rest, so he didn't participate and turned away.

Leo didn't hold back, let Aalto make a record on the side, and he used one object by one to ask the demon corresponding to the pronunciation and writing of the demon's language, just such a question, an answer, a write, and after two days, the various words recorded by Aalto, how many tens of thousands of sentences, have been able to make up a book of demon language.

In the process of inquiry, Leo also gradually mastered the reading and writing of the demon language of the abyss, and he found that it was a little difficult to pronounce the pure demon language with the human throat, because the demon was made of three throats, and through the resonance of the three Adam's apples, a very special roar was produced.

However, this did not stump Leo that he had plucked the demon's Adam's apple before, although the demon's new Adam's apple grew, but the old Adam's apple was not thrown away, and Leo controlled the vibration of the Adam's apple to make a very similar demonic tone.

After mastering the demon language, Leo began to formally inquire about the abyss, but before that, Leo asked Alto to leave, although Aalto also wanted to know what kind of magical place the abyss was, but after seeing Leo's serious expression, he still followed Leo's advice, did not stay in the basement anymore, and returned to the surface.

After Alto leaves, Leo closes the basement door and begins to control the demons, asking questions about Sin.

As he guessed, the demon passively revealed the affairs of the Sinful Abyss through this method, and it would not cause any side effects to him, but when the knowledge of the Sinful Abyss was spoken, it formed some kind of power to absorb some of the abnormal energy in the surrounding swamp, and soon formed a negative energy field centered on the basement.

Leo immediately noticed the change in the energy fluctuations in the surrounding environment, and also felt that this energy was full of negative factors, and further deduced what would happen, so he loudly reminded the outside of the house, and then ignored other things, and concentrated on extracting information about the abyss from the demon's mouth.

At the same time, Geralt, who heard Leo's reminder, also sensed the changes in the surrounding energy through the wolf school necklace around his neck, and he immediately commanded Regir and Alto with rich experience, and then pulled out the silver sword, sprinkled the sword oil used to deal with ghosts on it, and drank the witcher potion.

Geralt's face immediately turned extremely pale with the effect of the potion, and his eyes were also covered with protruding blood vessels, and he was able to see his surroundings clearly with the help of the potion.

Seeing this scene, Regier immediately semi-vampire, sensing everything around him through the talent of a vampire, and Aalto, who had experienced several battles, was no longer a scholar-type spellcaster, he skillfully cast a spell, put a defensive barrier on himself and Geralt and others, and at the same time held the materials used for spellcasting in his hand and was ready to cast a powerful spell at any time.