Today, Yichen was idle and went to the Yannin Village Hospital.

The Iwa Ninja Village Hospital has been very lively recently, because Yichen has invited a famous medical saint in the ninja world: Shennong.

Shennong benefited from the invitation of the dust and accepted the lower ninja Uzumaki Kaori, who had just graduated from Iwa Ninja Village, and Haruno Sakura, who was still in the ninja school, as disciples.

When he was apprenticing, Yichen also came forward in person, and directly informed the ninja world, saying that these two little girls were also his disciples of Yichen.

This incident made people who didn't know the identity of the leader of Shennong Kongnin Village feel confused.

They couldn't understand why a medical ninja was just taking in apprentices, why Yichen was so excited.

Yichen came to the hospital and met Onoki and Zaojie first, and the two were in charge of monitoring Shennong.

After all, Shennong is a research weirdo like Zerotail, and Yichen is not at ease to let him walk freely in Iwa Ninja Village.

Let Onoki and the early warning monitoring with a kaleidoscope writing wheel eye, Yichen can rest assured.

Even if Shennongdi Yannin Village releases zero tails, the kaleidoscope writing wheel eye can handle it.

Yichen asked Ohnogi, "Shennong didn't have any moths, did he?"

Onoki shook his head and said, "He's still very honest and hasn't done anything other than pointing out Uzumaki Pho and Haruno Sakura."

Yichen glanced at the hooves next to the two of them, who had been staring in a certain direction with their eyes open, and nodded.

After confirming that Shennong was still very peaceful, Yichen came to the hospital's laboratory.

Here, Shennong is teaching Kao-pho and Sakura-chan his unique medical ninjutsu.

Regarding Yichen's arrival, Shennong showed a kind smile and said, "I've seen Tsuchikage-sama."

Yichen also said with a smile on his face: "It's been hard work for Shennong seniors these days."

Shennong smiled, "These two children are very talented, and I like them too."

Yichen said, "Then it's troublesome for the seniors to worry about more."

After the two had a very pleasant chat, Shennong ignored Yichen and continued to point out the two children.

Yichen watched Shennong's process of teaching Xiang Phosphorus and Sakura for a while, and nodded in his heart, Shennong did take out his true skills according to Yichen's requirements.

Shennong's medical ninjutsu is not so much called medical ninjutsu as it is a medical skill.

His abilities are more focused on surgical procedures in his past life.

Similar to surgery, the understanding of the five internal organs, bandaging, hemostasis, detoxification and other contents, Shennong has a set of methods that are different from the current conventional medical ninjutsu.

Shennong's medical level may not be comparable to Tsunade, but his unique methods can bring great help to the improvement of medical ninjutsu in Iwa Ninja Village.

Yichen has high expectations for Sakura, but it is impossible for Sakura to apprentice to Tsunade like the original book in this life, so Yichen has to improve Sakura's medical ninjutsu level from other aspects.

Seeing that Xiang Phosphorus and Sakura were indeed studying very seriously, and the learning effect was also good, Yichen left the laboratory with peace of mind.

After walking out of the laboratory, Yichen met the medical minister Nakata Ichi, who was waiting for him outside.

Nakata glanced at the closed laboratory and said, "Tsuchikage-sama, that Shennong-senpai has a problem?"

Yichen nodded and said to Nakata, "When you usually communicate, keep an eye on it, this is the leader of the empty ninja village that was wiped out by Konoha during World War II."

"His strength is not weak, and if he uses all his means, he can compare with the shadow level."

"And he's a very good intelligence ninja, don't let him get close to the hospital's secret services."

Nakata swallowed and stammered, "Shadow? Tsuchikage-sama, it's not good that you put such a dangerous guy in the hospital."

"Do you want to arrange a laboratory outside the village and let him teach Sakura and Kaopho outside the village?"

"It's better to let the two go to school separately and come in turns, in case this man goes crazy, we will lose a lot."

Yichen glanced at him and said, "Don't worry, the third generation is staring at him not far away, if he dares to move, the third generation will kill him directly."

"You don't have to worry about force. Moreover, it's just a shadow level, and the number of shadow levels in the village has reached double digits now, what are you afraid of?"

"Don't worry, take out the frame of the Minister of Real Power of the First Great Ninja Village, no shadow level dares to do anything in the village, unless he comes to die together."

Nakata smiled bitterly, Yichen said easily, if this Shennong really messed up, even if the three generations stopped it, the hospital would probably suffer heavy losses.

At that time, he, the minister of real power in the number one ninja village, may only be able to go to another world to show his prestige.

Yichen didn't care about Nakatachi's mental drama and left the hospital directly.

After leaving the hospital, Yichen came to the Dark Prison.

Shennong's medical ninjutsu reminded Yichen of another person who also walked out of his own path in medical ninjutsu: Huang Quan.

Ever since Yichen and the shrine maiden teamed up to solve the dragon and brought Huangquan, who carried part of the dragon's power, to Iwa Ninja Village, Yichen had forgotten about him.

Yichen is very concerned about the dark medical ninjutsu invented by Huang Quan in the original book.

So I locked Huang Quan in Iwa Ninja Village and kept him researching, but I don't know how the research is now.

Yichen came to the Dark Prison, and after confirming his identity, he entered the prison and saw Huang Quan.

When he met Huang Quan, he was experimenting with animals.

Over the years, Huang Quan, who stayed in the Iwannin Village Prison, has not been idle, and according to the agreement with Yichen, his main job is to do research.

The village of Iwa Ninja will provide him with living creatures for experiments, including small animals, as well as captives from other countries.

For example, after defeating the sand ninja several times, the Iwa Ninja Village captured many prisoners. Each time he conquered a new territory, Iwa Shinobi would capture many more captives while clearing out wandering ninjas and renegades.

Some of these captives were returned by Yichen, and of course they were not free.

There are also a considerable number of ninjas who are controlled by Iwa Shinobi with special means and become ninjas who work exclusively for Iwa Ninja Village.

For example, in the Land of the Wind, when the four generations of Kazekage puppets dig up the gold, they also need to be carried by ninjas.

For example, every time a new branch is built, there will be a lot of physically demanding and physically demanding work.

The main force of this heavy work is the captive.

Yichen doesn't write the word bad guy on his face like Tuan Zang, but his methods of doing things in some aspects are not much gentler than those of Tuan Zang.

Most of the remaining captives have become guinea pigs in the various labs of Iwa Ninja Village.

These sand ninjas bear witness to the darkest part of the rise of the rock ninja hidden beneath the glossy exterior.

The human entity has not only been secretly carried out here in Huangquan, but also in the White Absolute Clone Laboratory, in the first generation cell laboratory that has just been established for a long time, and in the secret operating room of the Medical Department.

Even Lian Shengyou and Xia Yue's Yin Escape Lab occasionally used ninjas from other countries for experiments.

When the Enchantment Class researches various seals and enchantments, they will practice with captives.

When Atsumi Akino's spatio-temporal ninjutsu progresses, he will also use captives to take the lead in attempting.

There are also many sand ninjas or wandering ninjas who die in the process of time and space teleportation.

And the institution that consumes the most prisoners is still the dark department, and as the Iwa Ninja Village continues to expand its army, the per capita combat opportunities of the ninjas in the village have decreased.

In order to ensure the combat effectiveness of the dark department, Yichen once ordered that the number of prisoners needed for the training of the dark department must be guaranteed.

The meaning of this order is to institutionalize the training of new people with captives in the shadows.

The training in the shadows is all actual combat, and if you are not careful, you will kill the prisoner. Therefore, the dark department has been the bulk of the prisoners consumed by Iwa Ninja Village over the years.

The strongest captive in Iwa Ninja Village is Uchiha Shisui, and Uchiha Shisui is also the one who has served as a sparring partner the most.

Most of the shadows in Iwa Ninja Village have fought against the instantaneous water stop. Some more than once.

Huangquan is just one of the many laboratories in Iwa Ninja Village, and he has also conducted many human experiments.

Seeing Yichen who suddenly appeared at the door of the laboratory, Huang Quan, who was doing an experiment, was stunned for a moment, Yichen had never come

Over here.

With his stunned gaze, the rabbit in his hand lost his life directly because he missed the opportunity to heal.

Huang Quan naturally recognized Yichen, and he said respectfully, "Lord Tsuchikage."

Yichen walked into the cell where Huang Quan was and said expressionlessly, "Huang Quan, we had an agreement before."

"You worked for the Iwa Ninja Village for ten years, and I let you go after ten years."

"It's been less than ten years now, but I need the results of your experiments."

"Now tell me all the results of your experiments, and if I'm satisfied, I'll give you back your freedom, and if I'm not satisfied, then I'm sorry."

Huang Quan's breath suddenly stagnated, he didn't actually believe in Yichen's ten-year covenant, he had actually been waiting for the opportunity.

Waiting for the day when Iwa Ninja Village will be attacked, and when Iwa Ninja Village's defense is in chaos, it is time to escape.

Huang Quan believed that Iwa Shinobi would not have been so tightly guarded against him all the time.

But after waiting for more than six years, Huangquan still didn't wait for the day of chaos in Iwa Ninja Village.

He couldn't figure it out, could it be that in the past six years, there has not been a big war in the ninja world?

Even if there is no ninja war, hasn't there even been a tailed beast rampage in Iwa Ninja Village?

The more time passed, the more desperate Huang Quan became, and he had already decided that in two more years, when there was still more than a year left in the ten-year period, he would forcibly escape.

Although he was in the most heavily defended dark part of Iwa Ninja Village, Huang Quan was confident that with the results of his research over the years, he was at least thirty percent sure that he would leave Iwa Ninja Village without being discovered.

But Huang Quan didn't expect that it had only been more than six years, and Yichen couldn't wait to find it.

Is it that Iwa Ninja Village is finally in crisis? Can I talk to him about the conditions?

But what Yichen said directly made his heart sink.

How can there be such a negotiation? Shouldn't negotiations be about asking for a sky-high price and paying back the money on the ground?

What's the matter with driving people to a dead end?

Huang Quan calmed down for a moment, he still wanted to test it, so he asked, "Lord Tsuchikage, my experimental plan has been based on ten years, and it is only six years now, and the results of the experiment may not be satisfactory to you."

Yichen said lightly: "It doesn't matter if you can't satisfy me, just kill you, I won't lose."

Huang Quan's face trembled, and while scolding Yichen in his heart, he said, "Lord Tsuchikage-sama said that he laughed, and I will tell you the results."

Then, Huang Quan sealed his hands and performed a ninjutsu similar to Tu Dun, saying, "Tu Shadow-sama, considering that your village is dominated by Tu Dun, I have studied a special Tu Dun."

"A ninjutsu that can turn the whole body into dirt, I'll write it all down in a moment."

As Huang Quan spoke, one of his arms turned into dirt, and then from the soil to his hand, back and forth several times.

When it turned into dirt, he used a scalpel to cut it with his other hand, but when the soil turned back into his hand, there was no wound on his hand.

This ninjutsu is different from the Iwa Ninja Village and the sclerotic technique.

Sclerotherapy only improves defense, and this ninjutsu is indeed able to turn the entire body into dirt in a short period of time.

After turning into dirt, no matter what kind of attack the ninja receives, he will not be injured. As long as the soil is still there, after turning back into the human body, it will be fine.

If this ninjutsu is used well, it can indeed improve the combat effectiveness of the rock ninja.

It's just that Yichen has been expressionless, he just looked at Huang Quan like this, without saying a word.

Huang Quan secretly swallowed his saliva and said, "Lord Earth Shadow, in addition to the earth attribute, I have also researched a similar method for the other four attributes."

"Tsuchikage-sama is multi-attributed, and I think this ability can be used by Tsuchikage-sama."

Seeing that Yichen was still unmoved, Huang Quan showed a wry smile and said, "Tsuchikage-sama, these are really all my achievements."

Yichen said, "It seems that you are very confident in your medical ninjutsu, and think that you can complete the feat of resurrecting from the dead and shedding the golden cicada from my hands?"

As he spoke, Yichen held one hand

Before Huang Quan could react, the first-level light escape hit one of his arms directly.

Huang Quan didn't expect Yichen to shoot so quickly, although he had been on guard, he had already been hit by Guang Dun without reacting at all.

Huang Quan quickly retreated to the corner and took out a scalpel to look at Yichen vigilantly.

Seeing that Yichen didn't move, he touched his empty left arm with his right hand.

Huang Quan's face was ugly, he didn't see how Yichen made a move at all, and one of his left arms was gone.

Yichen saw that only a little blood was flowing from the broken part of Huang Quan's left arm, and said, "This is the result of your lack of cooperation."

"Come, try it in front of me, and see if you can recover my left arm, which has been directly vaporized by my light escape."

Huang Quan tried to pull out a smile and said, "It turns out that Tsuchikage-sama is talking about medical ninjutsu."

"Tsuchikage-sama misunderstood, I did study some medical ninjutsu in the past six years, but I haven't fully studied it yet."

"Originally, I was going to give it to Tsuchikage-sama, but it was all ideas that had not been studied, and they couldn't be put on the table."

Yichen also smiled and said, "Oh? Is it? I'm sorry I misunderstood."

"Then please tell me in detail about the extent to which this medical ninjutsu has been studied, and make it clear this time, lest I misunderstand it again."

The corners of Huang Quan's mouth twitched, and he said, "Don't worry, Lord Tsuchikage, I will tell the truth."

Huang Quan was very aggrieved now, he didn't think of handing over the Dark Medical Ninjutsu to the Rock Ninja Village. This is his biggest hole card in the ninja world in the future.

But he was forced to this point by Yichen, and he had to get some dry goods out.

In just a few breaths, Huang Quan came up with a statement: "Lord Tsuchikage, the dark medical ninjutsu I studied is different from the regular medical ninjutsu."

"If Iwa Ninja Village learns this ninjutsu, it will greatly increase the healing rate of the disabled......

After listening to Huang Quan's description, Yichen turned around and left the prison.

Huang Quan shouted apprehensively from behind, "Tsuchikage-sama?"

Yichen said without looking back, "Write down everything you have."

"I'm the one who speaks, so think about it. By the way, let's see if your dark medical ninjutsu can heal the damage caused by Light Escape."

"This is your last chance, don't let yourself down. I'll come and get your answer in three days."

When Yichen disappeared, Huang Quan put away his worried expression and looked in the direction of Yichen's departure, his eyes full of solemnity.

I don't know why, at this time, a feeling rose in Huang Quan's heart that Yichen already knew about his research results.

Shaking his head, Huang Quan threw the unfounded thought out of his mind, and then began to try to use dark medical ninjutsu to heal his missing severed arm.

It's just that Yichen was at this time just now, he didn't have the heart to think about how to treat the injury, and now his mind is on the injury.

Huang Quan, who was about to make a move, was dumbfounded.

"My ...... My left hand is missing? How can this be cured?"

Suddenly, he thought that Yichen had just cut off his left arm.

Yichen moved too fast, and he didn't see it clearly. He thought his left arm should be in this room.

However, now he knew that his left arm had been directly vaporized by the light escape.

The dark medical ninjutsu he has researched is indeed magical, and to a large extent, he can achieve immortality.

But it all has to be built while the body is still there.

The body is still there, even if the head is off, he can come back to life.

But what about an attack with direct gasification?

Drops of sweat began to drip from Huang Quan's forehead.

He remembered what Yichen had said, "Let's see if your dark medical ninjutsu can heal the damage of Light Escape."

Yichen didn't use the light escape when he caught Huang Quan, Huang Quan has been locked up in the shadows all these years, and he didn't know that Yichen's light shield had made a resounding name in the ninja world.

Huang Quan immediately fell into a huge panic.

He could imagine that if the research results he handed over to Yichen after three days did not satisfy him, Yichen would definitely choose to kill him.

Moreover, Yichen's method of executing him was definitely not to hack him to death with a weapon as he had thought before, it was likely to directly use that light to vaporize him.

At that time, all his ambitions, all his efforts, will be meaningless.

But if he was asked to write all the research results directly, he felt unwilling.

He also wants to take revenge on Iwa Ninja Village, how can he compromise like this.

"Damn, how can there be such an attack in the ninja world?" Huang Quan scolded angrily.

This is the sorrow of a ninja born in Nojiko.

Ninjas cultivated by the normal Great Ninja Village Ninja School, as long as they are not fools like Naruto, should know that the dust escape of the three generations of Iwa Ninja Village Tsuchikage Onoki can also cause similar damage.

But Huang Quan, who has little knowledge, doesn't know this.

Huang Quan kept pacing back and forth in the room, caught in a dilemma.

Three days later, Yichen came to the Dark Prison again, and this time, Yichen also brought Katsumata and Uchiha Izumiruku.

Seeing Yichen coming, followed by two ninjas dressed in the shadows, Huang Quan's heart jumped.

It stands to reason that to deal with him, Yichen alone is enough, why do you have to do this extra and bring two subordinates over.

A bad premonition rose in Huang Quan's heart.

He hurriedly said, "Tsuchikage-sama, wait a minute, I still have some content to finish."

Yichen said, "Don't worry, you write yours, I'll see what you've already written first."

As he spoke, Yichen separated a shadow clone, and the shadow clone picked up a few scrolls that Huang Quan had placed on the table.

Huang Quan asked tentatively, "Tsuchikage-sama, who are these two?"

Yichen smiled, "These two are specially invited to verify that you have not missed anything."

"These two, one can do illusion, and the other can do some shadow."

"Don't worry, as long as you don't hold back, they won't do anything to you."

The corners of Huang Quan's mouth twitched, and as he wrote, he asked, "Illusion? It turns out that Iwa Ninja Village has been studying illusions all these years, right?"

Huang Quan knew that Iwa Ninja Village was not good at illusions. So he wasn't afraid that Iwa Shinobi would use illusions on him.

Yichen smiled, "Quanluo, it seems that he doesn't believe in the illusions of your Uchiha clan."

Izumi Uchiha took a step forward, and the pitch-black eyes that appeared behind the mask of the dark part directly turned scarlet.

The next moment, Huang Quan lost consciousness.

When he came back to his senses again, the dark part in front of him had already retreated to its previous position.

"Writing Wheels, that was Writing Wheels just now? There is actually a writing wheel eye in Iwa Ninja Village?" Huang Quan was horrified in his heart.

Just heard the words Uchiha, he thought he had heard it wrong, when did Uchiha become a rock ninja village?

"No, the pattern of the writing wheel is magata-shaped, what happened to that pattern just now?" Huang Quan suddenly thought of something, and thought in his heart.

"I've been studying Yin Escape for so long, and I can't even prevent an illusion? The Uchiha clan's chakra eyes are so powerful?"

"No, what did I say when I was magical?"

Thinking of this, Huang Quan hurriedly looked at Yichen.

I heard Yichen say, "Huang Quan, you are really powerful, I didn't even see all of the thirteen traps you set."

"I'm one of the best ninjas in the ninja world who has mastered the five-attribute ninjutsu, and you can hide it from my eyes, Huang Quan, you're amazing."

Huang Quan heard Yichen's praise, but his hair stood on end.

Thirteen traps, no more than one and no less, it seems that he has said everything in the illusion.

In the past three days, Huang Quan finally decided to take a gamble after some consideration.

For this reason, he deliberately did not write out the core part of the dark medical ninjutsu at first, and after seeing the Uchiha Izumiluo and Katsumata brought by Yichen, he pretended to be scared and planned to write it temporarily.

He's already planned, he's writing black

When it comes to dark medical ninjutsu, a few traps will be set in the most critical positions, so that all the people who practice in the Iwa Ninja Village will end up playing themselves to death.

But who would have thought that before he could start writing, Yichen gave him a dismissal.

Huang Quan hurriedly said, "Lord Tsuchikage, I'll change it now, and I'll write a complete dark medical ninjutsu."

As he spoke, he took the scroll that had been written on the table, found the place where the trap had been set, and picked up the pen and changed it.

After all the thirteen changes were completed, Huang Quan quickly wrote out the core content of the dark medical ninjutsu.

After writing it, Yichen glanced at Izumi Uchiha again.

The Uchiha Izumi nodded, and once again cast a kaleidoscope sharingan-level illusion on Huang Quan.

It's just that this time, after the illusion in Huangquan, Sheng stepped forward and put a hidden seal on Huangquan's soul with Yichen.

This seal is similar to the Seal of the Root of the Tongue, which prevents Huang Quan from directly sealing what he sees and hears in Iwa Ninja Village.

Let him remember, but unable to speak.

Then Yichen took some of Huangquan's blood and used it to locate Qianhe. Just in case.

After a long time, when Huang Quan woke up from the illusion, he found that he had left the dark prison of Iwa Ninja Village, where he had been staying for more than six years.

He looked around and found himself in a deserted mountainous area.

"Did Iwa Shinobi really let me go?" Huang Quan couldn't believe it.

Then he looked at his lost left arm, and there was a look of great regret in his eyes.

knew that Yichen would really let him go, he cooperated honestly from the beginning, how could he lose an arm for this?