(—Repeats chapters in this chapter.) When it was about 3,000 words, it was repeatedly released. Tomorrow I got up early and changed it, and I kept working overtime, and I was sleepy. I'm sorry, I'll have a free chapter on Sunday, forgive me!! ）

"No, this is." Uehara spent a long time digging through his pile of scrolls and miscellaneous items, and finally found the ninja equipment he had made when he was in the ninja research and development department.

A strange square box, is this the so-called very powerful ninja tool? The scorpion frowned, his eyes full of doubt.

"This is one of my proudest ninja tools, the scorpion." Uehara was not ashamed of the humble trap of excesses.

"It's a modular trap, in other words, a finished trap."

"Trap?" The scorpion's voice raised a few degrees, and he was shocked. Originally, he guessed that the simple box that Uehara took out was the carrier of a terrible ninja tool.

"That's right, it's a trap." Uehara continued, "Even for a ninja who is good at setting traps, when enough traps need to be placed, the cost of chakra is still huge. ”

"That's why I built these standard trap modules."

Subsequently, Uehara began to explain in detail to the scorpion the advantages of his trap.

For example, the modular design can be combined into different shapes with trap boxes according to the terrain, and the terrain is very adaptable.

There are also camouflage on the traps, which are designed with different replaceable parts depending on the rocky terrain they may encounter, such as rainforests, deserts, and rocky terrain.

As for the concealer excitation device, there can be metal and non-metal materials to choose from, and watertightness and non-watertightness can be selected.

The list of other advantages is endless. In short, this is a well-made and ingeniously conceived ninja, but in addition to being expensive and extremely lethal, it can probably only provide assistants or cause trouble for ninjas at the lower level.

"Scorpion, my trap doesn't need to be activated by humans or ninjutsu, but it is more threatening to ninjas than ordinary traps."

"Moreover, it can be triggered only against ninjas, relying entirely on the power of machinery, which is what you want to know, and it belongs to the wisdom of "puppets". ”

Uehara said that his trap has his own "wisdom", and the scorpion is eager to find out.

Later, Uehara took the scorpion to a secluded training ground to demonstrate it to him.

It's very simple to set up a trap, just dig a pit, and then place the trap's box inside, and a trap above the passing line is complete with enough to fire a hidden weapon poison mist or detonation charm. Judging from the time taken and the effect achieved, Uehara's trap is not useless.

The first time he tried it, the scorpion found a rabbit and drove the rabbit to trigger the trap, but the rabbit jumped over the trap, and the trap still did not trigger.

"Is it weight?" The scorpion frowned and pondered, belonging to the contest of wisdom and the exchange of knowledge between the puppeteers, which fascinated him.

The reason why the white rabbit failed to trigger the trap the first time was that the scorpion thought that it was due to insufficient weight and failed to reach the minimum limit for triggering the trap.

The second time, the scorpion frantically brought a large rock and smashed it on the trap with a thud, but the trap still did not trigger.

"Did it break it?" The scorpion was very skeptical of the quality of the Uehara trap.

It wasn't until Uehara repeatedly confirmed that his trap was intact that Scorpion decided to keep trying.

The inquisitive scorpion, unsure whether the trap could still activate the hidden weapon, had chakras attached to the soles of his feet, and he wanted to skip the trap like a light fallen leaf.

It's just that as soon as the soles of his feet stepped on the camouflage cover of the trap, there was a click, and the camouflage cover of the trap immediately separated, and a silver buzz flashed, and the scorpion immediately got up and jumped to dodge.

"It's weird."

Doesn't the way the puppet is triggered depends on the weight? So what could it be?

The scorpion reloaded the trap's hidden weapon and with the help of Uehara put all the traps back into place.

This time, the scorpion didn't put the chakra episode on his feet again, he casually stepped on the trap, and the trap was triggered again.

The scorpion vaguely felt that he had captured the truth, and he waited for Uehara to say the final answer.

"Scorpion, if it were you and you were going to make a trap trigger, when would you most like it to be triggered?" Uehara took out screwdrivers, pliers, wrenches, and other things, and asked questions as he dismantled the trap.

"When a living creature is approaching a trap, it's the best way to trigger it." The scorpion gave one of the easiest answers to think of.

"Is it just a living thing?" Uehara smiled, "Reptiles are living creatures like frogs. ”

"Or, Scorpion, you'd say that when someone steps into a trap, that's the best time for the trap to trigger, right?"

"However, there is a difference between a ninja and an ordinary person."

"Ordinary people can't control their weight, and ninjas, using chakra, can even walk on water."

"Relying solely on weight as a trigger for a trap is certainly not going to work. Using the weight of a human body to limit the conditions under which a trap can be triggered does filter out most of the false touches caused by animals. But there are also many heavier than the human body, such as the enemy's psychic beasts, or earth escape ninjutsu. ”

"Is it a chakra test strip?" The scorpion interrupted Uehara's words, "When the fire escapes the chakra encounters the chakra test paper, it will catch fire, the wind will split in the middle, the thunder will crumple, the water will be wet, and the soil will crumple." ”

"If the chakra test strip is used as the trigger device for the trap, as long as the chakra touches the trap, no matter what, the state of the chakra test strip will change, right?"

"In this way, the trap triggered only for the ninja can be completed without relying on ninjutsu and human control, right?" The scorpion is very excited, and the communication with Uehara is always as fun as solving one puzzle after another.

This feeling is the same as when Scorpion gets the code-locked material from his grandmother, but it's nowhere near as interesting as Uehara's.

"With a chakra test strip, well, that's a good note." Uehara was stunned, "However, the strength of the chakra test paper is not enough, and it is not enough to act as a hidden weapon excitation device." ”

"And, scorpions. How do you trigger a ninja when you don't use the chakra to pass through your trap? ”

It's not very difficult to design a trap that can be triggered when a ninja passes by, and you can even tie a rope to it. It's rare to be a precondition - not to be triggered by a very light rabbit or a heavy rock or psychic beast.

A simple trap, but when you dig deeper, the scorpion finds that there are many issues to consider.

"Scorpion, let me tell you the answer—" Uehara unveiled the final mystery, "as a better distinguishing mark between a ninja and an animal, it's not the weight, but the shape." ”

"Shape?" The scorpion wondered.

"The shape of the footsteps." Uehara fully demonstrated the precision machinery he had designed to the scorpion, "I designed hundreds of sensitive contacts on the camouflage cover of the trap, and every time I was touched, there would be a certain number of contact changes. ”

"Something like a rabbit or a frog has very few contacts."

"And if something like a big rock hits a trap, there will be a lot of contacts."

"The number of contacts close to the soles of a person's feet is almost certain that someone has touched the trap."

"It's not up to Chakra to decide. Whether the ninja uses chakra or not, the gait will not change. ”

It's not very useful, but the design is subtle, isn't it?

"There's a question, what are the touchpoints of a person's gait?" Sure enough, the scorpion was able to get to the point of the question at once.

"The gait triggers different touchpoints for people of different ages."

"Because of genetics or other factors, the gait of people in different countries is different."

"As for what the contact is, Scorpion, I won't tell you." Uehara looks like a chicken thief.

"The soles of a child's feet have not much bigger contact points than a frog," the scorpion shook his head, "Uehara, your design has a serious flaw. ”

"But the number of children who go to war is small, isn't it?"

"If our trap works on ninety-five percent of ninjas, as an improvised trap, that's enough."

"If you take all ninjas as a whole, what is the average gait of ninety-five percent ninjas, scorpion, it's up to you to count."

Uehara wants to guide the scorpion to think about the problem in a different way, from a mathematical point of view.

Just as the truth on the battlefield is difficult to use or a thousand books to use, the personal experience of any legendary ninja is not enough to be a reference.

The only thing that can be used as a reference is to count the number of ninjas who died under the two types of ninja on all battlefields, and then the analysis made by combining other factors is valuable.

Iwakuin had never done anything like it. Although it is a simple reason that changing the buttons on the ninja uniforms from metal to plastic when fighting the cloud ninja will definitely reduce casualties, no one has ever done this.

Inspired by Uehara's trap this time, Scorpion felt that he should make a puppet in a different way. And what kind of way, the scorpion was still ignorant for a while.

With the original talent for ninjutsu and the slightest knowledge of puppetry, he taught the scorpion how to practice ninjutsu. What Uehara can hand over to the scorpion is only a different way of thinking about the problem—rigorous data statistics and analysis, supplementing or even replacing judgment based entirely on experience.

———— repeat below.

"No, this is." Uehara spent a long time digging through his pile of scrolls and miscellaneous items, and finally found the ninja equipment he had made when he was in the ninja research and development department.

A strange square box, is this what is called someone's most proud ninja tool? The scorpion frowned, his eyes full of doubt.

"This is one of my proudest ninja tools, the scorpion." Uehara was not ashamed of the humble and excessive puppet.

"It's a modular trap, or a finished product trap."

"Trap?" The scorpion's voice raised a few degrees, and he was shocked. Originally, he guessed that the simple box that Uehara took out was the carrier of a terrible ninja tool.

"That's right, it's a trap." Uehara continued, "Even for a ninja who is good at setting traps, when enough traps need to be placed, the cost of chakra is still huge. ”

"That's why I built these standard trap modules."

Subsequently, Uehara began to explain in detail to the scorpion the advantages of his trap.

For example, the modular design can be combined into different shapes with trap boxes according to the terrain, and the terrain is very adaptable.

There are also disguises on the traps that are designed with different replacements depending on what you may encounter, such as rainforests, deserts, and rocky terrain.

As for the concealer excitation device, there can be metal and non-metal materials to choose from, and watertightness and non-watertightness can be selected.

The list of other advantages is endless. In short, this is a well-made and ingenious ninja that is not only expensive but extremely lethal, and it can probably only provide assistants or cause trouble for ninjas at the lower level.

"Scorpion, my trap doesn't need to be activated by humans or ninjutsu, but it is more threatening to ninjas than ordinary traps."

"My puppet can be triggered only against ninjas, relying entirely on the power of machinery, which is the wisdom of the "puppet" that you want to know. ”

Uehara said that his trap had his own "wisdom", and the scorpion was puzzled.

Later, Uehara took the scorpion to a secluded training ground to demonstrate it to him.

It's very simple to set up a trap, just dig a pit, and then place the trap's box inside, and a trap above the passing line is complete with enough to fire a hidden weapon poison mist or detonation charm. Judging from the time taken and the results achieved, Uehara's trap is not useless.

Uehara said that his trap could identify ninjas and trigger them automatically, something so interesting that Scorpion was eager to explore.

The first time, the scorpion found a rabbit and drove the rabbit to trigger the puppet, but the rabbit jumped over the trap, and the trap still did not trigger.

"Is it weight?" The scorpion frowned and pondered, belonging to the contest of wisdom and the exchange of knowledge between the puppeteers, which fascinated him.

The reason why the white rabbit failed to trigger the trap the first time was that the scorpion thought that it was due to insufficient weight and failed to reach the minimum limit for triggering the trap.

The second time, the scorpion frantically brought a large rock and smashed it on the trap with a thud, but the trap still did not trigger.

"Did it break it?" The scorpion was very skeptical of the quality of the Uehara trap.

It wasn't until Uehara repeatedly confirmed that his trap was intact that Scorpion decided to keep trying.

The inquisitive scorpion, unsure whether the trap could still activate the hidden weapon, had chakras attached to the soles of his feet, and he wanted to skip the trap like a light fallen leaf.

It's just that as soon as the soles of his feet stepped on the camouflage cover of the trap, there was a click, and the camouflage cover of the trap immediately separated, and a silver buzz flashed, and the scorpion immediately got up and jumped to dodge.

"It's weird."

Doesn't the way the puppet is triggered depends on the weight? So what could it be?

The scorpion reloaded the trap's hidden weapon and with the help of Uehara put all the traps back into place.

This time, the scorpion didn't put the chakra episode on his feet again, he casually stepped on the trap, and the trap was triggered again.

The scorpion vaguely felt that he had captured the truth, and he waited for Uehara to say the final answer.

"Scorpion, if it were you and you were going to make a trap trigger, when would you most like it to be triggered?" Uehara took out screwdrivers, pliers, wrenches, and other things, and asked questions as he dismantled the trap.

"It's best when a living creature approaches the trap.