Chakra cannons are large enough to fit a person in, allowing them to use giant solidified chakra balls as ammunition.

A giant fire escape with a diameter of thirty centimeters with a compression ratio of fifty to one The killing range of the solidified chakra ball after it exploded is equal to the release of fire escape by three hundred middle ninjas......

Uehara felt that he couldn't afford to use such a high-end and high-grade thing for the time being, the chakra bullet was made of scorpions, and Uehara had to pay for it, and he would have to be poor for half a year with a round of artillery fire.

The source of the hot sword and the solidified chakra bullet is the seventy-two star ninjas, do you want more ninjas to rely on the stars to cultivate?

Uehara ruled out this idea just after thinking about it, and the disadvantages were too great.

Star, Star Ninja, Uzumaki Aoi, Solidified Chakra Block, and then Scorpion and Harumi, this system is very fragile, whether it is Uzumaki Aoi has an accident or Star has an accident, Uehara will no longer be able to make a hot sword.

The hot sword is the general name of a series of products, and the official claim of the scientific ninja is that it is the ninja invented by Master Qingming.

In addition to ninja knives, there are also shurikens made from solidified chakras, kunai, armor, and other ninja tools.

When the inventory of hot swords reached a certain amount, on Uehara's proposal, in the name of scientific ninja equipment, the City of Peace first gave five hot swords and a number of shuriken to Iwakuin Muye Yunyin and Sand Yin for free, and other small ninja villages also gave them away.

This is a necessary advertising expense.

In addition to the powerful destructive ability of the hot sword, there is also a more important feature, which is the chakra conduction ability.

The best thing for chakra conduction is chakra metal, followed by the various alloys mastered by the wind demon clan, who are good at making shuriken-like ninja tools, but the hot sword does not have the problem of chakra conduction, because it itself is a solidified chakra. It is not an exaggeration to let a thunder-attribute ninja hold a hot sword made of thunder solidified chakra that can completely conduct chakra.

After receiving the hot sword, each ninja village immediately conducted various tests.

When it was discovered that the hot sword could easily cut off the ninja village's fine standard ninja sword without applying chakra, each village began to treat it with caution.

After more than 10,000 slashes, the blade of the hot sword was undamaged, but the light became a little dimmed.

Lei Dun's Solidified Hot Sword can easily cut through the Earth Flow Wall, and Feng Dun's Solidified Hot Sword can cut off Thunder......

When a Wind Escape Ninja is holding the Wind Escape Chakra Solidification Sword, he can easily suppress another companion of the same level who is also holding a standard ninja sword.

The durability that will not be damaged by 10,000 slashes, the power that far exceeds that of ordinary ninja equipment, and the price that is not too expensive, combined represent a very high cost performance.

On the desk of the three generations of Hokage Ape Flying Sun Slash, the Land of Fire, Konoha Headquarters, five hot swords with heavy scabbards are lined up, and five different handwritings are written on the scabbards in turn, representing five different attributes of ninjas.

Ape Fei is a rare genius who is proficient in all five types of escape arts, so he has a far deeper understanding of the hot sword than the others.

"Scientific ninja?" Ape Fei said in a deep voice, removing the pipe from his mouth and exhaling a meaningful smoke ring.

This is just an A-level hot sword, and I don't know what kind of power the S-class ninja sword that scientific ninja says should have.

Inexplicably, Sarutobi thought of his teacher, the second generation of Hokage Senju, and his Thor's sword seemed to be very similar to the hot sword in front of him.

Ape Fei's instinct was right, the hot sword was a low-imitation version of Thor's sword.

Soon, Uehara received an order from Konoha for fifty hot swords at a time plus other ninja equipment.

The unit price of the hot sword is three million Konoha coins, and if Konoha is willing to trade chakra metal with scientific ninja tools, a discount will be offered, maybe Konoha is not short of money, and they have no intention of selling chakra metal.

Fifty hot swords, adding up to 150 million Konoha coins, Konoha is paid in cash, so Uehara has to complain that he is really rich.

When the scientific ninja completely revealed its face in the ninja world, it became the focus for the first time.

Konoha will not be at ease with simply buying a hot sword from scientific ninja equipment, and capable intelligence officers have begun to infiltrate the city of science.

Fortunately, the City of Science, which was the site of the former Ghost Lantern City, hangs alone in the strait, and its geographical location is relatively closed and not easy to penetrate.

Sarutobi gave the order to copy the hot sword to the ninja research and development department in the village, but was told that it could not be imitated.

If Konoha wants to imitate the hot sword, he must have a star, a solidified chakra refined by the star ninja who has been practicing with the star for a long time, and a Uzumaki Aoi that can heal the damage to the star ninja's body, not to mention the exquisite skills of Master Qingming and the production line designed by the Red Sand Scorpion alone.

Without any of these conditions, it is impossible to succeed.

In the entire ninja world, only Uehara can integrate these resources, and it is impossible to change another person. And Uehara's integration of these resources was also achieved by various coincidences.

Uehara finally had the confidence to say that Orochimaru was not alone in mastering the core technology.

Iwakure's order also arrived later, as well as the sand hide, the cloud hide, the rain ninja and the grass ninja......

The orders add up, and there is a demand for nearly two hundred hot swords.

This easily brought hundreds of millions of revenue to Uehara and the Scientific Ninja Organization.

The monopoly industry is always profitable, but the price of the hot sword is very reasonable, and the first product produced by the scientific forbearance is very popular, Qingming finds that he is too busy, and there are too few people to use in the city of peace.

In a world full of killing and advocating force, only those who are sick aspire to become craftsmen. Qingming had a long-cherished wish to establish the Craftsman Ninja Village, but it was a tragedy at the beginning of its establishment. Now the craftsman ninja village is in a state of seclusion, and most of the former artisan ninja have given up their work to make ninja tools, and there are many people who have been recruited by other ninja villages, and there are not many artisan ninja left.

Qingming took the time to go to the country of craftsmen once, and took away all the remaining craftsmen, so there were more than thirty former craftsmen in the city of peace.

With barely enough manpower, Qingming got out of the cumbersome ninja orders and was able to study new ninja equipment and practice.

Qingming found that relying on the scientific ninja organization could bring him a lot of convenience.

For example, the rare chakra metal, Qingming got twenty-three grams of chakra metal from Iwain Village during the exchange of hot swords, and sixteen grams from Sha Shinobi, which was barely enough to make a small thousand books, or, to transform one of Qingming's own fingers.

It is inevitable that the City of Peace will begin to be spied on by countless forces.

"Fire Escape-Fire Sparrow Sky Soaring Technique!!"

One of the Ninjas of the Xuanyuan Crowd unleashed a powerful fire escape, the surging fire escape chakra wrapped in a shuriken like a flock of nesting larks, and pounced on an unknown ninja wearing a mask and hiding all over his body under black clothes.

This is an enemy who is extremely skilled in concealment, and was only discovered when he was close to the City of Peace.

"Water Escape - Water Array Wall Technique!!"

Yes!! Screaming, the body of the enemy who cast the water escape instantly inflated like a balloon, and then exploded into blood foam.

The exploding insects of the Xuanyuan people are a mortal threat to the shadow-level powerhouses, and they are invincible in battle.

This is the fourth battle this month.

No matter how tight the defense is, there will be times when it will be lax, and Uehara once again convened a high-level meeting of scientific ninja equipment, and everyone was present at the meeting, except for Kakuto.

"I think we should focus on the City of Peace and arrange the enchantment ninjutsu."

Proposed to each other, unanimously approved.

Because it was in the strait, the water vapor was humid, and Uehara chose a defensive barrier similar to that of the Fog Hidden Village, and thanks to the efforts of the enchantment class maintained by hundreds of water escape ninjas around the clock, the City of Peace became a city hidden in a thick fog.

In the sky, there is also a small air ninja ship in the realm, outside of the city of peace, there are countless traps, and the city of peace has become an extremely difficult place to set foot in.