A month and a half later, Tang San, who was in seclusion to develop other hidden weapons, came out of seclusion early.

During the retreat, since the logistics staff present and those involved in research and development all knew the importance of inspiration, no major incident would disturb his retreat.

Even the food is delivered to the table at the door every day by the person in charge of logistics. After checking it every hour, those who have eaten will take away the empty plate, and those who have not eaten will get another hot plate. of.

It can be said that it is precisely because of these considerate logistics personnel that the geniuses and geeks who study things here can devote all their attention to research and development.

The first thing Tang San did when he came out was to thoroughly wash away the iron filings and metallic smell that he had gotten from staying in the smelting room.

Then he found the person standing at the door and asked him what time it was and how long it had been since he arrived.

The person waiting outside the door did not hide anything. He explained clearly what he wanted to know one by one, and added:
"The boss has told me that after you come out, Team Leader Tang, you can leave at any time if you have something important to do. She will return to the academy before the deadline."

Tang San nodded and sorted out the adjusted series of hidden weapons on his arms.

Question: "Your boss...forget it, where is Yiyi now?"

"Laboratory Three."

"What is the research topic?"

"Sorry, I don't know this, but there is also Team Leader Zou in Laboratory [-]."

Tang San asked some more questions, and found that he couldn't find out more.

After thinking about it for a while, he didn't intend to disturb that place. He went straight to the group of researchers who were preparing to innovate his flying divine claw to see the current progress.

And Yiyi, who was worried about Tang San, was meeting Zou Lang in Laboratory No. [-] for the final step.

A defensive array to isolate some energy interference from the surroundings was deployed under the experimental table, and on the table, a pair of hands wrapped in soul power were holding an extremely thin carving knife, gently touching an object no more than the size of a palm. Fall, then rise.

During the ups and downs, extremely fine metal shavings were brought out.

At this time, Yu Yuyi's light gray eyes showed a vertical pupil that only appeared from another perspective. The golden light seemed to be condensed in the extremely thin cone-shaped body of the vertical pupil. It seemed that it was still emitting in places where the light was not shrouded. A faint light.

She slowed down, slowed down, and lengthened the time between each breath.

Then his fingers moved slightly on the palm-sized thing several times.

Zou Lang, who was watching Yu Yuyi's movements, unconsciously held his breath because of Yu Yuyi's every move.

In the end, I didn't even know that I was holding it in so much that my whole face turned red and purple.

Still after Yu Yuyi's last knife fell, the palm-sized thing suddenly shone brightly. After five kinds of light representing different attributes, purple lightning like a small snake hovered on the metal block along the wind.

Seeing this, Zou Lang took a deep breath.

"Your idea is so crazy!"

Zou Lang, who was still frightened, only uttered these words after he recovered, whether it was a compliment or a sigh of emotion.

Yu Yuyi smiled and did not reply.

But she also breathed a sigh of relief after the success of this thing.

The overly tense expression on his face relaxed.

"It's not crazy, it's just an experiment."

She picked up the twelve-sided metal block that was still carrying purple electricity and looked like a dice.

Place it in front of your eyes and look at it carefully.

After a long while, she said: "Now the problem has been overcome."

What the two of them are studying now is exactly what Yu Yuyi had thought when she saw Tang San's Flying Divine Claw - Gatling.

However, Gatling is just a rough concept of Yiyi. To be precise, what Yiyi wants to develop is a powerful firearm that can convert soul power into bullets and fire continuously.

As for the type of firearms filled with bullets, she and Zou Lang had completed the research and development half a month ago in a "friendly" atmosphere where you would insult me ​​and I would bully you.

After all, compared to the former, the mechanism and shell of a firearm that only needs to be filled with bullets to fire are not difficult.

Those things were much more childish than the hidden weapon techniques Tang San delivered.

Its main difficulty lies in the bullets that can threaten the soul master.

From the beginning, Yiyi had already rejected pure solid bullets, as well as bullets filled with gunpowder or explosives.

Those things are enough of a deterrent for ordinary people, but in the eyes of soul masters, they are just toys for playing house.

For them, the lethality is not comparable to the breath of a ten thousand year old soul beast.

So at that time, Zou Lang and Yu Yuyi's research and development centers were focused on what kind of bullets could really threaten the soul master.

The two of them had an idea and just built it.

Within two weeks, these two men had made no fewer than a thousand types of bullets alone.

All kinds of metals, with toxins, with formations...

There's nothing that others can't think of, but there's nothing they can't do.

In the end, the two of them experimented.

The bullets with formations engraved on them will be far more powerful than ordinary gunpowder bullets.

If poison is injected into it, it will be something that the soul masters around the soul sect will be afraid of.

And the production of the bullet itself is not difficult, the difficulty is the formation on it.

Different from the formations burned during the production of soul guides, the formation burning here only requires a little soul power to be injected at the end. Ordinary people can also use it directly by relying on the 'milk bottle' that stores soul power, so they made Fang can completely rely on a machine to perform process-based burning.

The energy of the machine relies on the 'electricity' that Zou Lang had developed earlier.

Although it has not been popularized yet, relying solely on Zou Lang's genius research and development, he has been able to create something that converts wind energy and solar energy into electrical energy.

After a few years of safety tests in the experimental villages are passed, we can negotiate with the city lord to popularize it.

However, due to the different conditions in different places, if it really wants to be popularized, it will have to rely on the personnel in the team that Zou Lang studied before to train a group of second-in-commands who can conduct field exercises, so that targeted construction can be carried out in different locations.

As for these simple R&D personnel, they are more willing to conduct some deductions on a small experimental table in the laboratory than to go out.

It’s not that they don’t pay attention to reality. It can only be said that after a practical operation, they are already very sure about it. Things that are not challenging are not worthy of the attention of geniuses and geeks like them.

But these are the aftermath.

Now Yu Yuyi and Zou Lang are just two people in the research team, and they have overcome the difficulty of bullets.

And just now, in the palm-sized twelve-sided metal block that was burned not long ago, they overcame the difficulty of relying on soul power alone to condense and transform it into bullets that are threatening to soul masters.

This difficulty is completely incomparable to the previous difficulty of bullets.

The latter problem with bullets is singleness.

All you need to do is study what kind of thing can cause harm and threat to the soul master.That is to say, it is limited to causing damage and having strong lethality.

As for the former, since each soul master's soul power characteristics, characteristics, and attributes are different, if you simply study the conversion of one kind of soul power into bullets, it is tantamount to wasting a lot of time on useless things.

Although it can also be customized and developed for auxiliary soul masters with no offensive power, as well as off-the-beaten-path martial souls such as Zou Lang and Kong Yuyu, this is the limit.

Therefore, they are studying the conversion of various soul powers into bullets.

Similar to mass production, it is suitable for the transformation of all soul masters.

The difficulty of improving from a single soul power to one that can be converted into multiple soul powers is not as simple as one plus one.

That is adding a kind of soul power transformation, which is as difficult as adding a natural moat.

Fortunately, they have more than just knowledge about soul guides.

What's more, Yiyi had knowledge that belonged to the age of mythology at that time.

Combine the two and study.

After countless failures, this core, which the two of them constantly calculated, balanced formations and energy, and transformed different attributes, was finally tried out by them.

Yes.

It was tried out.

After calculation, there are still thousands of combinations left. Use the stupidest enumeration method to test them one by one.

And this one was the only one that they successfully tested after 672 attempts day and night.

Just when they were too tired, only the two excited people were left.

His eyes were fixed on this red metal block that was no different from ordinary metal under the light.

Looking at the interconnected formations on the twelve faces.

Zou Lang's eyes, which were red from the heat, couldn't help showing an expression of obsession, "It's so beautiful!"

"Yes, it will be more beautiful when it is activated later."

Yu Yu clung to him, his soul power flowing slightly in his fingers holding the metal block.

Instantly from the fingertips, it was injected into this small metal block.

After the soul power was injected into the metal block, it seemed as if it was awakening from a deep sleep. The formations carved on the twelve surfaces on the outside lit up from the center.

It's like water flowing through it, following the smooth traces bit by bit, spreading out from the center, and finally gathering at the opposite end of the center.

The entire metal block suddenly shone brightly, and the rich golden color was continuously released and restrained, and finally condensed into a streamlined bullet with a sharp cone at the front and a cylinder-like back, and landed in the palm of Yu Yuyi's hand.

"How's it going?" Zou Lang couldn't wait to take the bullet from Yu Yuyi's hand and looked up and down, "Did you find anything wrong?"

Yu Yuyi felt it for a while, but didn't feel anything was wrong.

It was just that she was a little surprised after feeling the properties of the bullet for a moment.

"Is there anything wrong? The soul power consumed is very small, which is within our expectations. And considering that all martial soul attributes are just variations and combinations of the five elements, my soul power is not considered a conflict."

"only……"

Yu Yuyi pinched the metal block and smiled bitterly, "It is indeed beyond my imagination."

Her soul power itself is more of an 'earth' attribute.

But the metal block after the formation was burned, and I don't know if it was too sharp or something, but it actually showed all the five attributes contained in her soul power.

Due to the excessive operating pressure, the metal block did not appear on the surface. In fact, there were faint cracks in the parts where the formation was not burned inside.

If she is allowed to test it a few more times, it won't matter if the metal block becomes useless.

I'm afraid that in the last gun, if she blows up the barrel directly, people will see their Starfire joke.

"The metal block itself cannot withstand my soul power."

When Zou Lang heard this, his happy expression became a little more worried, "This is not possible."

"If this is the case, the weapons we develop will have certain limitations. It cannot withstand energy, which means that it cannot hold too many times of soul power, which means that its usability is not even as good as a firearm filled with ammunition. .”

Yu Yuyi shook his head and said: "Don't worry about this, it's just that my soul power is special and it can't bear it well. As for other users, I can't guarantee anything else. I only talk about soul masters at the Contra level. It can withstand even the injection of soul power. An unlimited supply of bullets is naturally feasible."

"For a Titled Douluo, I can only say that it is not feasible to rely solely on the current materials."

Zou Lang touched his chin thoughtfully, "Boss, is this the same reason for you? The existing materials are not suitable for you. You need a metal that can carry the five elements to fully function. "

"That's not ruled out."

Yu Yuyi was also a little troubled. She was originally very greedy for this kind of gun, so she thought about research and development.

If everyone else can use it, but she, the developer, can't use it, then how frustrating it is.

It's just that metal that can carry the power of the five elements is rare. It's hard to say whether you can meet it in Douluo Continent.

If you ask Douluo, he will probably have to spend a while recovering from his injuries.

Speaking of which, Douluo had been silent since the injury a few years ago. She could only faintly sense his voice and some emotions, letting her know that he was still safe.

There are no more.

However, Douluo also gave Yiyi the authority to call him out directly. If there was an emergency, he would come out as long as Yiyi called him.

However, Yu Yuyi considered that it was relatively stable now, and the next few years would be the most turbulent time, so she let Douluo recover from his injuries and did not call him easily.

Now the perceived situation is coming, Douluo's injuries are almost healed.

If I were to wake up, it would probably be in the past few years.

It’s not too late to ask again at that time.

With this thought in mind, Yu Yuyi threw the metal block into Zou Lang's hand, "For this thing, the constraints between the formations have been studied. The characteristics of different metals may be related to one or two formations. I will write about it later. Come down to you.”

"Then this metal block will be handed over to you and Sister Yuyu for testing. My soul power is not suitable. It will probably break in my hands after a few times."

"Things such as the gun chamber and shell are similar to those developed before. It is best to make this thing placed from the outside, similar to the place where ammunition was filled before, and it can be taken out and replaced at any time."

Yu Yuyi thought, maybe she is not the only one who has this trouble, some soul masters with powerful souls and soul powers may have similar effects to hers.

"Considering safety, burn several formations to isolate heat and explosions where this thing is placed."

After saying this, profiteer Yiyi went online: "Metal does not need such good materials. If it is sold, the gun body must be safe and complete. In the later period, the main thing we will sell for this type of firearm is this metal energy conversion block. If it If it doesn’t break, we may only be able to sell it for a one-time sum, thank you!”

"It's better to get some metal raw materials. After being used many times, they will crack and need to be replaced. Oh, by the way, this must be explained to the buyer when selling. Although we are profiteers, we must be honest profiteers."

Zou Lang:...profiteer!
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