"Sonar, didn't you mean..."Scarlet Moon looked around weakly.

"Shhhh

"Really?" Scarlet Moon's eyes lit up.

"Fake!" Su Fan dragged Scarlet Moon back to the dormitory.

It's afternoon now, because I found a money-making point, Scarlet Moon is not sleepy, after the two of them washed their faces, they were ready to go out to find those two Ji Ji, Su Fan is now thinking about whether to buy a communicator, it's not expensive, tens of thousands of Grass coins, Ruike and Alma have it, otherwise I want to find someone to spend this bullish effort.

Cao Cao is the fastest person, saying Cao Cao Cao arrived, Cao Cao became a borrowed generation, and now Cao Cao refers to the two Ji elements, just when Su Fan and Yeli were about to go out to find them in the place where the two of them often engage in Ji, the two of them pushed the door in, Su Fan and Scarlet Moon dragged them into the dormitory one by one, Scarlet Moon also glanced out like a thief, no one outside, closed the door and let the dog!

"What are you doing?" Rick looked at the two roommates who had almost put on their night clothes and turned into gentlemen on the beam.

"There's a big business, do you want to do it?" Su Fan said in a seductive voice.

"What's the big business? Let's talk about it first, we won't sell ourselves!" Rui Ke hurriedly kept his distance from Su Fan.

"I said why do you two always sell your bodies, you sell your bodies, it's too impure!" Su Fan looked disdainful, "I'm talking about buying accessories for battleships, like this..."

Told Ricco and Alma about the idea of the most primitive listening device, both of them were very surprised when they heard it, the two of them are nobles, some things know more than Su Fan, for the problem of submarines, their family also has a great loss, nobles, just relying on the tax of the fief is definitely not enough, of course, it is necessary to rely on commerce, but commerce is inseparable from transportation, these pirates are very frustrated, after destroying the escort ship, immediately persuade the transport ship to surrender, and if they do not agree three times, they will be destroyed immediately, and all the survivors on the ship will be arrested and cramped and skinned。

"Is this true? You don't do such a big business yourself? You know, although we have a good relationship, but you know the aristocratic family...most of the interests are definitely not yours. Ricco asked very strangely, compared to Ricco, a person who is much worse than the world, Alma has to know a lot, and when he heard Ricco say this, Alma showed a helpless look.

"Since the nobles are like this, that's why I'm going to find a golden thigh to hold! Give you that we can still have some benefits, and these benefits are also very important to us, if we do it alone, I dare say that in a few months, all the business will be swallowed up by other nobles." Su Fan said, she rushed over and hugged Ruike's thigh and rubbed it there, "What's more, this golden thigh is so comfortable to hold!

"Wow!" Rui Ke, who was bitten by Su Fan on the leg, jumped to the side like lightning.

The most primitive underwater microphone is just a certain signal amplifier is the most critical, and the other parts are left to Scarlet Moon - compared to Su Fan, an alchemist who is a halfway monk and can only deform a piece of wrought iron now, Scarlet Moon, a relatively professional alchemist, is already a red-level alchemist-although the alchemy stone made is black and red, but this Jishu is still competent for other parts of the audiophone.

"What? You mean you make it yourself?" Su Fan belongs to the kind of person who does what she says, not that she acts decisively, but that she is afraid that she will throw this thing away after this hot time.

"It's true that it can be mass-produced, but the principle of the listener is not magical, and it needs to be learned by someone. Su Fan said.

According to Su Fan's idea, the business of the listener is owned by the Oak Tree and the Fear family, but to Su Fan and Scarlet Moon for the management of the two shops, the income from exchanging jishu for two shops is not bad, there are countless mechanics on this shijie, for some new things, the mechanics have always preferred to kill a thousand by mistake than let go of one, if there is, install it, regardless of whether he is useful or not, besides, this listener is not big, and the price is not expensive.

"This...if the listener you're talking about is really as good as it says, as long as there are two stores, it's absolutely fine, even if you want a little more. Ricko said.

"In that case, I'll go get the materials first, and I'll hand over the finished product to you in a few days. Su Fan said.

Originally, Scarlet Moon didn't want a store, because there was nothing to do with herself, and it was useless, but when Su Fan took out her 100 million Grasse coins, she gladly accepted it, this is called fighting local tyrants and dividing the land, and the value of a shop is at most millions, and Su Fan gave his shop to Scarlet Moon to run - no salary.

It's afternoon now, Su Fan went out to buy materials, and Scarlet Moon went to sleep, she didn't have to sleep like Su Fan, after buying a bunch of materials, Su Fan rushed to Sten's alchemy laboratory, fiddling with these things will have some noise, and the smell is also terrible, don't get it in the dormitory, Sten's alchemy laboratory doesn't need to be used in vain, you don't have to spend money to rent a laboratory.

In addition to himself, there are three guys in Sten's laboratory, these three guys Su Fan also knows, all of them are in Steng's dormitory, when they saw Su Fan walk in and occupy a platform, the eyes of the three looked at Steng ambiguously, and Steng could only make a helpless gesture and continue to get his own things.

The primitive sonar used all electronics -- integrated circuits or anything, of course there were no electron tubes, and the electron tubes were only born when the sonar was first invented, and this kind of simple circuit Su Fan could make by hand, as for the tools? The soldering iron or something is enough, as for the soldering iron, where did the electric soldering iron come from? Don't forget that she is a battleship, can she not have the equipment of the personnel in the internal damage of the battleship? Don't look at the fact that she has transformed herself beyond recognition, but some things inside have not been replaced.

"What are you doing?" Su Fan sat in front of the alchemy table, using a high-temperature plasma knife to cut off pieces of metal or non-metal, and then welded them up little by little, welding this work she used to check from the Internet when repairing her own notebook, and then because of the unsteady hands of her hands, Zuihou broke her notebook, but the most basic mastery is still possible, and now the accuracy of her hands is no worse than those top machine tools, and it is to make these extremely primitive circuits.

"My stuff, you don't understand. Su Fan raised his head and changed his eyes from a magnified perspective to a normal perspective, originally Sten thought that Su Fan was refining something there, alchemy also needed some tools, an alchemy pen looked similar to an electric soldering iron, but Su Fan was just smoking here without a little magic fluctuation, Steng was strange.

"This thing...so familiar, where do I seem to have seen it?" said Steng as he looked at the very simple circuit that Su Fan had made, and said with a frown, no matter where he looked at it, the circuit had nothing to do with the magic array.

"Yes, can't it? This is unique to our race. After Su Fan heard Sten's words, he was very surprised, this shijie also has such a thing as a circuit?

"By the way, I remember!" Steng clapped his hands, "It's a dwarf, the dwarven mechanic's mechanical spirit has something like that, what do they call it...?," Steng clapped his hands, "It's a dwarf, and there's something like it on the dwarven mechanic's mechanical spirits, and they call this an electric circuit?"

"Dwarves, dwarves will do this?" Su Fan discovered the new world again, and the circuit turned out to be not his own, but what is the origin of this dwarf? Su Fan made up his mind to have time to take a look, if he could find some good things, it would be better.

For this circuit, Sten is also very curious, the circuit is not a secret for the dwarves, even if some flow out, but also because of the internal anti-dismantling method, even if it is disassembled, it just gets a bunch of useless metal garbage, but because the effect of the circuit is similar to the magic array, so humans do not peep much, of course, for a seeker, this circuit is a very attractive thing.

"Linna, will you use this?" asked Steng after watching Su Fan expertly weld a pair of things that didn't have any magical reaction into a complex pile of metal polymers.

"Will you, want to learn?" Su Fan finished welding a wire from zuihou, and then picked up the prepared haode shell to be installed, this shell was pinched out by her hands, and her little alchemy jishu didn't have to come out to be embarrassed.

"Will you teach me?" said Steng, surprised.

"It's not impossible to learn if you want to, but I want to give you a warning in advance!" Su Fan stretched out a finger.

"I won't leak it out without your permission!" Stenn swore assuringly.

"I mean, if someone kills you after you learn this, don't blame me!" Su Fan put away his fingers.