"How do you know?"

Hearing Yan Yi's surprised rhetorical question, Shang Lingyi and Le Yu did not show a surprised expression, but frowned slightly.

Yan Yi pulled out the instrument on the table and took out two metal badges from it - Le Yu wanted to pat his head hard, the theft technology was not at home, and he even forgot this old routine of black under the lamp!

In the memories of Jing Zhengwei and Yin Yinyin, I don't know how many nobles have been seen deliberately hiding good things in very conspicuous places, and they were not aware of this routine at first. However, they didn't miss out on any good things, after all, those two were both murderers and eaters, and in the face of the death crisis, the scared nobles shook out almost everything, even if they hid it tightly, they would eventually become the trophies of the night demon and the white-haired assassin.

Maybe it's because Jing Zhengwei and Yin Yinyin are used to "pressing 'F' to force confessions and looting" and never take the technical route, so although Leyu faintly felt that the instrument on the desktop was a little 'big', he didn't realize that it was an excellent hiding box, and he missed it.

I saw Yan Yi touch the two metal badges and said, "This is a communication tool that we have researched, and it is tentatively named 'Heart Seal'." When the sun is bright, the longest communication range is five miles, on cloudy days it is only two miles, and at night it will be reduced to within 100 feet. Each use needs to be placed in the sun for three hours to recharge, each use of a maximum of 10 minutes of communication, the quality of communication depends on the length of the distance, the use of the lips must be close to the badge, the activation method is to vigorously tap the surface, so that the heart seal will start to work. ”

"But the voice must be seriously distorted, for example......" Yan Yi put a badge to his lips, and handed a badge to Shang Lingyi, and then lowered his voice to speak, and the badge in Shang Lingyi's hand came out with a hoarse sound like a machine rubbing.

"Very nice gadgets." Lou Yinhai helped his sunglasses, nodded and said, "Okay, ignore this boring topic, Mr. Yan, let's continue to talk about the modulation and demodulation of radio signals......

"Teacher Yan, how many pairs of these things have you made?" Shang Lingyi asked, "I mean, if this kind of product can be mass-produced, it will inevitably be ...... to Yanjing No, an indelible effect on the full radiance. ”

"Very good, very good, it seems that what you are talking about is more important." Lou Yinhai spread his hands and took a step back, lowered his voice and muttered to himself, but everyone in the research room could hear it: "I knew that the smell of copper polluted academia was the result......

Yan Yi glanced at Shang Lingyi, his jade finger lightly tapped on the table, glanced at the cabinet, rolled his eyes, and said, "Our laboratory has made five pairs, and the first two pairs have been scrapped directly due to excessive testing. This is what we keep for testing...... However, it cannot be used for mass production at all. ”

"The Heart-to-Heart Seal is not so much a product of our radio team as it is a creation of Yaoshi Alchemy. Compared with the highest crystallization of Yaoshi alchemy, the divine soldier, a mere radio communication function is too insignificant. We still have many hurdles to overcome and many theories to calculate before we can truly use the radio communication tools, but with the help of Yaoshi Alchemy, we can use our spiritual power to reach the last step directly, and then stuff the functions we want into the Yaoshi Creation......"

Yan Yi put the metal badge back into the instrument, and walked around as he spoke: "It's not so much that this is a product we made, but that it's a toy made at a great cost under Yaoshi alchemy...... Even if you ignore the labor cost, the cost of each pair of heart-to-heart printing is more than 20 gold yuan. ”

Shang Lingyi was stunned: "So expensive? ”

"Meteorite pyroxene is used in it?" Lou Yinhai said a question in an affirmative tone.

As soon as these words came out, Leyu also understood why this thing was so expensive.

This meteorite pyroxene is the main material of the Eight Illusion Divine Weapons.

Unlike when he was ignorant and despised by Yin Yin before, Le Yu also collected a lot of information about the divine soldiers during his tenure as President Jing Zhengwei, although there are few rumors at the bottom, but there have always been poems and books in the rich family, when Le Yu went to blackmail the Wanghai Mansion, in addition to Bai Dehu Yan Siluo, a fiancée who never touched until he died, he also got a lot of classics of 'Brilliant Secrets'.

In this world, the ore of gold, silver, copper and iron can only be regarded as an additive, and Yaoshi is the foundation of all things. On top of the Yaoshi, there are two major ores, one is the meteorite pyroxene, the main material of the legendary Absolute God Soldier, but in the internal records of the Radiant Four Guards, the meteorite pyroxene is actually a man-made creation, not to mention it for the time being; Another major ore is meteorite pyroxene. 61 Library

In fact, it is also a meteorite, but not all meteorites are meteorite pyroxene, at least meteorites that have been scorched by the sun and transformed into flare stones directly in space.

If you use the 'amount of sunlight radiation' to judge, ordinary pyroxene is 1, meteorite pyroxene is at least 100, but the rarity of meteorite pyroxene is at least 10,000 - this thing is sold by the gram, and even has no price.

But as the best carrier of spiritual power, if ordinary Shining Stone can only allow your mental power to play Minesweeper, then Meteorite Pyroxene can allow you to directly play Monster Hunter World Ice Plains - the latter can directly give you the ability to distort reality.

As Yan Yi said, if they were to make a radio communication tool, they would still have many unsolved problems. But after using the meteorite pyroxene, they directly 'imported' the function of radio communication into it, and then the metal badge 'read' their wishes and 'generated' this function.

'I thought this could work,' and then it worked.

One can imagine how in short supply and how expensive meteorite pyroxene is. The pair of metal badges cost twenty gold yuan, which is not an exaggeration at all.

"Then there are two pairs of hearts, where are they now?" Shang Lingyi asked Le Yu a question that he wanted to know: "If I can, I plan to buy a pair and bring it back to the clan elders, presumably it will also allow them to increase the amount of investment......

"A pair was taken away by the tea principal, and it was taken directly for nothing, after all, the meteorite crumb was also provided by him." When he said this, Yan Yi also had a black line on his face: "And the other pair is sold." ”

"Sold to whom?" Shang Lingyi's tone was quite eager, but she quickly came back: "I can go to the buyer to discuss, maybe the other party is willing to sell to me." ”

Yan Yi turned his back to the cabinet and shook his head: "I don't know." ”

"Don't know?"

"The other party came to me wearing a mask and a cloak, and directly spoke out with the Aiki method of warfare, saying that it was introduced by Principal Cha Huan, but I think it is definitely not...... But if it was the information leaked from Principal Cha Huan, I would have believed it. ”

"And you're still selling?" Shang Lingyi asked.

"Because the other party offered a price that I couldn't refuse."

"What price?"

Yan Yi smiled and didn't speak, Shang Lingyi knew her attitude, and immediately said, "Can I take a look at the heart-to-heart seal?" ”

"No problem, as long as you don't take it out, you can test it in the lab as you like."

Watching Shang Lingyi tinker with metal badges in the past, Lou Yinhai, who had been shaking his legs impatiently, finally raised his spirits: "Our time is very precious, and we shouldn't waste it on boring socializing. Mr. Yan: I think the essence of modulation is to move the spectrum of the signal, so that the receiver can separate the required frequency signals, so that the signals of different frequency spectrums do not interfere with each other......"