When Li Yi heard that Zheng Shusen had been slaughtered again 58,000, he didn't squirt out a mouthful of old blood.

"Damn you are stupid. You have to pay for so much money. Wouldn't you say you didn't bring enough money?"

"No, because I'm using a credit card..."

"Then you won't say the amount is not enough..."

"It's too late, I just swiped my card and saw the bill before I knew..."

Well, the bitch world is indeed not something ordinary people can understand...

"But I think this money doesn't seem to be very expensive, right? Because I remember you said that nowadays, the average special agarwood is sold for 8,000 yuan per gram. The agarwood powder just now has to have five or six grams, right?"

Li Yi slapped his forehead speechlessly, and couldn't communicate anymore. Is it really impossible to communicate anymore. Can agarwood and agarwood powder be confused? Is the grade of agarwood the decoration?

Even if the agarwood powder is not mixed with agarwood powder, the price of that grade of agarwood powder is no more than 100 yuan per gram!

"Are you sure, no more than 100?"

"Sure!"

"Puff! Goodbye to me, brother, don't look for me, let me find a quiet corner to disappear silently from this world.:3.。

。

"Well, go and die, so you don't have to pay back the credit card account..."

Not long after, Gu Feng sent the painting to Zhong Haoqing's office.

""Autumn and Winter Landscape Pictures. Winter Scenery"? This painting can be imitated to this extent. If you are not reminded in advance, even if there is a problem with the paper, most people will believe it!"

Hu Jinquan is a master of ink and water landscape, so he can see the extraordinaryness of this painting at a glance. Although the composition of this painting is different from the painting of the same name treasured by the National Museum of Tokyo, it looks like the feeling that Yang's works such as Xue Zhou give people.

Zhong Haoqing also came over to take a look.

"The painting styles are indeed very similar, but the paper is indeed a big flaw and cannot escape the eyes of the appraisal masters. Moreover, the precipitation of ink is also a big problem..."

Hu Jinquan nodded. After thinking for a while, he said:

"You put it here, I guess it will take about a year at the earliest."

"ah?"

"What are you? A year is short. Do you think it's so easy to get rid of it?"

Li Yi scratched his scalp. Fortunately, he thought that half a month was almost enough, and he wanted to deal with Hengshan and his son! But now the father and son don’t know what happened. If the two Chinese surrendered, they shouldn’t have run away, right?

On the way back, Gu Feng handed Li Yi a report.

"Brother Yi, the test report has come out. None of the little bugs were poisoned to death, but their cause of death... It's so magical, you'd better see it yourself."

Magic? Li Yi blinked, what causes death? How could Gu Feng use the word magic?

When he opened the thick report bound by copy paper, he first looked at the selection of insects. Flying ants, mosquitoes, flies, moths, ants, crickets, golden beetles and other insects, he chose two of them, nearly a hundred of them.

The report began to give a simple description of each insect. Then, next was some more professional things. Li Yi flipped through them casually and skipped directly to see the conclusion.

The conclusion is very simple and clear, and it is beyond Li Yi's expectations, because the causes of death of these insects were all due to ultra-low frequency sound wave damage, that is, death from infrasonic waves!

It's indeed... so amazing!

After closing the report, Li Yi took out his cell phone. Soon, he found an introduction to infrasonic waves.

The propagation of the vibration of the sound generator in air or other substances is called sound waves. The sound wave with a vibration frequency less than 20hz is called infrasonic waves.

According to research, people's sense of sound has a fixed frequency range. Normally, it should be between 20hz and 20000hz, that is, within the range of 20 to 20,000 vibrations per second.

If the vibration frequency of an object is lower than 20hz or higher than 20,000hz, the human ear cannot hear it. Frequency above 20,000hz is what we often call ultrasonic waves, and those below 20hz are called infrasonic waves.

The report pointed out that these insects died from infrasound waves at frequencies of 12hz to 18hz!

Humans have conducted a lot of research on infrasonic waves, one of which is the research on the harm of infrasonic waves to animals and human bodies.

Studies have shown that infrasound waves can resonate with the human body, thereby causing damage to the resonant organs or parts due to displacement and deformation.

This type of injury can be divided into two categories: mental injury and mechanical injury. The main symptoms include general discomfort, dizziness, nausea and vomiting, nystagmus, etc. In severe cases, there may even be disorders, madness, and internal organs rupture!

Infrasound waves with the same intensity and different frequency can cause damage to different organs and parts; while infrasound waves with the same frequency will have a degree of killing depend on the wave intensity.

The so-called infrasonic weapons use this principle.

Although infrasonic waves are invisible or heard, they are everywhere. Infrasonic waves will be produced by earthquakes, volcanic eruptions, storms, wave impacts, gunfires, thermonuclear explosions, etc.

The most important thing is that because the frequency of infrasonic waves is very low and the atmosphere absorbs little, it is not easy to attenuate. Moreover, the wavelength of infrasonic waves is very long, which can bypass certain large obstacles and cause diffraction. In addition, it is not easy to focus into a beam, so it is very difficult to achieve directional focus emission. The direct result of this is that it is inseparable from the enemy and is easy to be injured by accident.

The more Li Yi looked at him, the more frightened he became. This was just a super killer who invited him to come back, and he was also a type of "those who offend me will be punished even if they are far away." It was terrible!

But then he discovered the problem, because he remembered the scene that night. At the beginning, there was no problem with the insects getting close, but when the large number of insects were killed, the ones who came back died almost two meters away from the heart buds.

According to the above introduction, the attenuation of infrasound waves over a short distance is almost negligible. So, if the heart buds emit infrasound waves, how could it be attenuated in just two meters?

Is this report fooling people?

Gu Feng scratched his scalp.

"I also asked this question at that time, but the expert was very sure that these insects definitely died of low-frequency sound waves. As for why they were within two meters, he didn't bother to answer this question because he thought it was impossible!"

OK, it's impossible...

"Then... can we change another research institution?"

Gu Feng smiled bitterly,

"Brother Yi, I first looked for a research institute that studied chemistry and neurotoxins. After the experts there confirmed that these insects did not die of severe toxicity, they suggested that I try it out for an acoustics institute, so later I asked someone to find an expert who studied infrasonic weapons. This report was issued by that expert."

Experts who study infrasonic weapons? Such experts should be more rigorous, right? However, low-frequency sound waves, but attenuation are obviously inconsistent with infrasonic waves. What is that?

"Brother Yi, do you remember that after I and Fat Elephant and I cleaned the insect corpses, they felt a little dizzy and nauseous?"

Li Yi nodded.

"That's how I inferred that we stood far at the beginning, so it's fine. When Fat Elephant and I were cleaning up the insect corpses, we entered its two-meter defense circle. Because we were relatively large, we..."

Li Yi nodded again and said:

"In other words, the heart bud may be able to control the propagation distance of the sound waves, because I remember that there was a moment in the middle, and its killing range was only one meter. After I poured some water, it returned to two meters..."

Li Yi remembered that when he first discovered that the heart buds could kill insects, those mosquitoes almost flew to their branches and leaves before they were killed. In addition, it later showed that when it killed that large wave of insects, it should be possible to determine at least two things now.

One thing is that the heart bud can turn on the sound wave weapon as you wish according to the degree of threat it is under. The other thing is that it may be able to control the spread distance of the sound waves!

"Well, in addition to these two items, there is another thing, that is, this guy is very tempting!"

Getting insects? Li Yi suddenly remembered the scene where thousands of insects flocked to the sky that night and surrounded his heart buds. He couldn't help but shivered, that is, it had a killer weapon, otherwise he wouldn't know how miserable it would be!

"We tested it in the past two days and caught some small insects. We found that as long as we enter a range of about one hundred meters away from the heart bud, these insects will be crazy, rushing straight towards the heart bud without caring about anything..."

"Is this what it means to attract insects and kill insects with force?"

"Well, we've also tried birds and mice, which are larger, but the buds don't seem to be attractive to them. Moreover, no matter how close the distance is, even if it touches its branches and leaves, nothing happens."

Li Yi rubbed his chin hard, which was only effective for small insects, and not only could entice insects, but also kill insects... From this point of view, it seems to be somewhat useful for the vineyards. If there are insects or something in the future, it should be done without insecticide.

But in this way, no matter whether it is good or bad, it is really not clear whether it is a good or a bad thing.

"Brother Yi, in fact, the most suitable thing for Xinbu is camping. With it, even if there are many insects, ants and ants, you won't be afraid..."

Li Yi said oh, it seemed that this function was useless. When they went out for camping, they didn't bother to take it, their heart buds were still so tender, and they probably would have to shake it to death if they just shook it.

Back at Yanyuan, Li Yi first glanced at the heart bud that had been moved back to the balcony, and found that it seemed to be growing better than before. When he thought of the little guy's behavior before and after he watered Polygonum multiflorum that night, he understood that even if this guy could emit an attack similar to infrasonic waves, it would probably not be too easy. If he had not replenished Polygonum multiflorum and frequently used it to kill insects, he would probably have died in the end.
Chapter completed!