Chapter 129 is easy to understand just by imagining

"Hmph~ It's boring......"

Thinking that she would first draw tens of thousands of Yin Seal Techniques on herself, Sakura guessed that this must be a time-consuming and boring large-scale project.

All of a sudden, it's boring.

Everything in the imagination is very beautiful, but the reality is that those stage three ninjutsu are all far away, and they are still in the position of stage one and stage two, and the next stage of the Yin seal is not even a shadow.

She's still 108,000 miles away from Sakura in that form!

She shifted from the salted fish form on the table, and lay on the back of the chair as if her spine had been removed, and the chair babbled and shook as she kicked her feet back.

Dangling the four-legged chair back and forth as a hammock, with only its back two feet as support points, this kind of unbalanced movement that would have taken a lot of physical skill to complete, and now she can do it with ease.

With her hands behind her head and her feet raised high, her calves swaying casually, Sakura stared at the ceiling and began to froze.

Boring ninjutsu always makes people unmotivated to work.

The girl's diligence in ninjutsu is out of interest.,When you encounter this kind of ninjutsu, you can't help but procrastinate.,Just want to find an excuse so that she doesn't have to face the boring reality.。

"Damn~ There is nothing else that must be done now!"

She pondered for a while before she gritted her teeth.

It took a few minutes, but after all, I overcame my laziness and buried myself in the case.

I forced myself to work all morning, and at noon, I went out to forage for food with my heavy head.

Konoha streets.

"Hmm~" Sakura looked at the sun, the time was not up or down, and it was a little uncomfortable.

The ramen she had just eaten had been digested, and she walked down the street, touching her stomach, and her lower abdomen was completely flat, and her food was surging, and her sleepiness suddenly came down.

"Shall we go back and take a nap, or shall we go to the master?" she muttered to herself.

The midday sun was so bright that the back of her neck was hot, and the weather was too lazy to lift her spirits.

Oh~~ She yawned and felt a little lazy all over her body.

Well...... It's September sickness!

- Although it's almost October.

But in the end, he brought himself to the Hokage's office with both feet.

Without knocking on the door, Sakura walked in and saw Tsunade's sleeping face:

Hokage-sama lay on his desk, his right arm, as white as jade, and fell asleep.

From Sakura's point of view, the vast expanse of spring light is just in full view: from the open collar down, the plump softness bulges like a hillock, the two pieces of white flesh like jade and fat are squeezed into a deep ravine, and the white and tender skin seems to have a dark fragrance. It pressed against the table, fluctuating with its breath and changing shape like a water balloon.

She took a step closer, and Tsunade woke up hazy when she heard the voice.

"Sakura-chan, it's you......" Goyo Hokage whispered with sleepy eyes, "Is there anything wrong with me?"

She asked, rubbing her eyes, a glimmer of saliva remaining on her plump lips.

Sakura blinked—didn't you call me over?

The girl's confused little eyes alerted Tsunade, who straightened his hair and clothes and finally cleared his head.

"Oh, yes, that's it. She slapped her forehead and said suddenly.

So he took out a scroll from the drawer at his feet, which was the ninjutsu research and development progress report scroll handed over by Sakura, and there were two majestic characters written on it-

Sakura Chong.

"Your reel. She handed the scroll back to the maiden, who opened it and saw that it was already full of annotations.

"I wrote down what I think is wrong and what needs to be improved, you can take it back and read it for yourself, and come to me if you don't understand anything. ”

Tsunade patted the chair in front of the desk, motioned for Sakura to sit down, and continued, "I took a look, your Sakura Chong's stage one is basically completed, and you can go back and overcome those few small problems." But in the second phase of development, you have never been able to achieve the desired results, and in my opinion, your ninjutsu should be missing an important point. ”

She picked up a pen and paper and drew a few strokes on the paper.

A long pillar is drawn, topped by a protruding crown of heads.

"You see, these are two neuronal cells, and these are the axons of the first cell. Tsunade pointed to the long pillar with a pen and explained to Sakura, "In fact, you only thought about the transmission of nerve impulses on the nerve fibers of one cell, and you didn't think about the fact that it takes quite a bit of time for nerve impulses to pass from one cell to another. ”

Sakura saw a long pillar with a round head at the top, pressed against the edge of another cell.

Well...... She understood. That long column is the axon of a nerve cell.

"This knowledge should have been explained to you in detail at the next stage, but since you have developed this ninjutsu, then I will teach it in advance. ”

"Look closer," Sakura poked her head over, only to see Tsunade quickly complete the sketch she had just made, drawing a complex pattern in a few clicks.

The other nerve cell is drawn as well, and the top of the axon is against the edge of the second nerve cell.

Tsunade pointed to the round crown on top of the long pillar.

"The ends of the axons of this neuronal cell are enlarged, cup-shaped, called 'synaptosomes', which come into contact with the cell body or protrusion of another neuronal cell after synapse. This is the structural diagram of the contact part of the two nerve cells. ”

Very good, long cylinder, cup-shaped crown, synaptic bodies. Sakura stared at Tsunade's diagram as she silently recited the words, feeling like she wanted to laugh uncontrollably.

"After nerve impulses are transmitted to synaptosomes, the presynaptic membrane releases neurotransmitters – mainly acetylcholine – across the synaptic cleft and onto the postsynaptic membrane of the latter cell, stimulating it to produce nerve excitation, which is the process of nerve signal transmission between two cells. Tsunade pointed to the various parts of the picture with a pencil and explained to Sakura.

The synaptosome sprays the medium onto the membrane on the other side, and Sakura listens to Tsunade's explanation, nodding her head repeatedly. It's really not hard to understand!

"Because of the complexity of the process and the use of chemical media to conduct the signal, the process is very inefficient. Therefore, if you only blindly accelerate the conduction of nerve signals in the fibers in the second stage of development, without considering this process, of course, you will soon hit the limit and will not be able to further improve the reaction speed!"

"Hmm......" Sakura took the pen and paper and muttered for a moment at the sketch on it.

Carefully digested what Tsunade said. Aside from the jargon, what Tsunade said was actually quite simple.

All it takes is a certain amount of imagination.

Her mind is quite smart, and she quickly cleared her mind.

Nerve signals are transmitted from one end of the cell to the other and then to the other, which are two processes. The former is conducted by electrical signaling, while the latter is transmitted by chemical signaling.

In other words, it is not enough for the signal light to be conducted quickly in the long column, but also to speed up the process of ejecting the medium to the posterior membrane.

Sakura's previous stage 2 only considered the process of accelerating the first electrical conduction, and did not consider the process of chemical transfer. And the reaction time occupied by the latter is actually quite long.

"I see...... I get it. Sakura said, putting away the papyrus.

I understand it completely without ambiguity.

Her medical skills were really half a bucket of water - but it was much better than the empty bucket she had before when she didn't even have water, and this half-baked knowledge was the result of what she had learned from the medical books she had given her during this time.

Since it's a book, it's bound to be rote memorization without seeking a deep understanding, so the previous development of Sakura Chong-Phase 1 relied more on her superb chakra manipulation ability to forcibly complete, and after Stage 2, her half-understood knowledge became a major obstacle to the development of ninjutsu.

Sakura now regrets why she didn't study medicine in her last life, it's really painful to gnaw on these big guys, and it's progressing slowly. She knew that she lacked knowledge of the human body, but it was wishful thinking to learn it in a short period of time, so she could only ask Tsunade questions while developing.

Tsunade then asked, "So you've figured out how to deal with this?"

Sakura shook her head, how could she have a good idea right away.

"I'll have to go back and think again. The girl said honestly to Tsunade.

"Then I suggest you continue with the previous method, that method has a lot of potential!"

Sakura's previous method was simply to use chakra to create a new ion channel in the nerve fibers to replace the originally inefficient sodium-potassium channel, and the nerve signals were conducted in the new chakra ion channel, which would be much faster than the signaling speed of normal cells.

She calls it motor neuroelectronics.

Tsunade's intention is to continue this practice in the chemical transmission process of the presynaptic membrane, the postsynaptic membrane, so that nerve signals can be changed from sluggish chemical transmission to efficient electrical transmission, which is indeed a bold and tempting idea.

But there are still a lot of problems that need to be solved on how to do it.

Sakura was convinced that this was a good idea, and she couldn't help but think about it in her head at the moment.

"Ahem, don't worry, Sakura, you can go back and think about it," Tsunade interrupted Sakura's musings with two light coughs, and continued, "I have one more thing here......"

She pulled out two pieces of paper from the pile of papers and handed them to Sakura Haruno.

"I want you to join the Shadows. ”

(Ask for recommendation votes~~~)

(The long-lost 3,000-word "big chapter"! Celebrate last night's epiphany.) It's not as amazing as I imagined, it's just generally beautiful. ）

(Book friend group number 488076541 welcome to play~)