Qin Shuai: "Similar to this kind of board, there should be some in the military factory, in the fourth workshop, idle for a long time, I don't know how the quality is now, you have to find a way to buy it, but your car must not be able to pull these things, the workshop director of the fourth workshop is notoriously stingy, will not deliver to people, unless you buy enough for 10,000 yuan, but his boards are sold hard, and they can't be sold for 1,000 yuan." ”

When night came, they did not expect that because of the construction of the tank base, they were afraid that people would steal materials back and forth, so they temporarily sealed the gate of their residence compound.

Jiang Linda couldn't go back, so she could only call their person in charge. The person in charge said to let her rest nearby, and contact her in time if she has something. Just come and line up on time.

Qin Shuai arranged for Linda to rest in the bed, and he made a bunk.

The two of them couldn't sleep, so they talked about the military materials they wanted to buy, Qin Shuai said that as long as they bought ordinary boards, with these materials, he would transform them, and some of the high-precision equipment in them would not be discovered by others, what kind of raw materials did he use.

In fact, Qin Shuai knew that it would definitely be more convenient if he bought an extra room, but now Linda wanted to save money, but instead shortened the distance between the two of them. Linda didn't expect this, so she was embarrassed and rolled over and fell asleep.

Early in the morning of the second day, Jiang Linda hurriedly went there while the military factory had just opened, and because she knew the people there, she quickly rushed to the fourth workshop.

The director of the fourth workshop was overjoyed when he knew that someone was going to buy second-hand materials, but Linda bought an ordinary board, and he was a little uncomfortable.

"Director, she looks like she's going to buy these boards, they can be sold for 1,000 yuan at most, and her car can't be loaded, so it's not appropriate for us to send them away, what should we do?"

The director's assistant military engineer babbled. The fourth workshop is the poorest workshop in the military factory, so they have long been known for their careful calculations, and the other workshops are relatively profitable, and this workshop is about to go out of business, which is supported by the profits of other workshops, because each of their workshops has a specific business volume. Sometimes, when they have little business, they also take the extra business of other workshops.

The assistant said: "I suddenly remembered that she said that she was a friend of Qin Shuai, the director of the 3rd workshop. He also brought some profits to our fourth workshop that time, subsidizing tens of thousands of yuan, otherwise for the sake of this face, he would have helped her deliver the goods once? ”

The director of the fourth workshop sighed, no matter how stingy he was, he couldn't help but return the favor: "Since you are Qin Shuai's friend, let's help once, it's difficult, this car doesn't have much fuel money, so send a truck." ”

They arranged two more military workers who had no tasks, followed the car together, and sent them over according to the route provided by Jiang Linda, but they didn't expect that it was the residence of Qin Shuai, the director of the third workshop.

Qin Shuai didn't want to trouble them too much, so he sent them to the garage, invited them to eat some delicious box lunches, and sent them back.

Before leaving, there was a slightly older military worker, who spoke seriously, and whispered to Qin Shuai: "Young man, do a good job, now the military factory needs you, and the headquarters of the alliance army also needs you, you must not be half-hearted, there were prisoners before, and they deliberately performed well in our alliance army, and later defected and were killed directly." ”

In fact, he just reminded Qin Shuai that he must not turn back.

In fact, Qin Shuai deliberately bought a house in the Alliance Military Region, in fact, it was to make everyone down-to-earth, but if he didn't look back, it would depend on his own meaning, because he was not very satisfied with the Alliance Army, and he was not very satisfied with Colonel Kim, if he was satisfied, it was actually Jiang Linda's father's team, but they were already missing, their team cared about peace, and only fought against alien evil forces, this was the battle Qin Shuai hoped for.

What he is doing so far is trying his best to disguise himself.

After they left, Qin Shuai looked at these boards carefully, and there were small words, that is, the older generation of the military factory left them for the new generation, so they were marked with some important symbols.

But at present, there is no benefit to speak of, so it is sold as useless.

He took out a small notebook to make a record, and then took pictures with his mobile phone, and then eliminated them with his own special elimination pen.

These are all proper nouns, and when Qin Shuai was making records, he found that in fact, the old military industry of the Alliance Army was very advanced, but many people ignored these: "...... Ingredient structure, production process, general law, quality law...... Resonance frequency, sound bridges, slit and holes, material differences, sound insulation components, clever selection of materials...... Materials on the car. ”

He lowered his head and found a glimmering board, which was marked with alien words, but it was surprising that he could read it.

A cursory reading shows that it is the aliens who passed on to their companions, the specific explanation of the soundproofing materials of the Earth.

"Acoustic insulation materials are a class of materials, components or structures that are capable of blocking sound propagation or attenuating transmitted sound energy...... It is characterized by heavier mass and higher density, such as steel plates, lead plates, concrete walls, brick walls, etc. ”

“…… Sound insulation refers to isolating, isolating, separating, etc., sound or noise through certain objects. The number of decibels of incident sound energy on one side of a material in relation to the transmitted sound energy on the other side is the sound insulation of that material, usually expressed by the symbol R (dB). ”

"Sound insulation materials or components will have different sound insulation effects due to different use occasions and different test methods. For soundproofing materials, it is necessary to weaken the transmitted sound energy and block the propagation of sound. The requirements of the sound insulation material are dense and free of pores or gaps; There is a large weight. Because this kind of sound insulation material is dense, it is difficult to absorb and transmit sound energy and the reflection energy is strong, so its sound absorption performance is poor......"

I didn't expect the aliens to study the earth's soundproofing equipment so perfectly, it seems that they have made some preparations, but who is in the military factory, making these records, and it is not known to everyone?

Analyzing it, no one has touched these devices in the warehouse for a long time, so there are aliens, and they have made a record, and if they don't guess wrong, it is estimated that some of them may soon go over to buy these materials, so they will pass the information on.

Intelligence, what kind of intelligence are they transmitting...... Qin Shuai suddenly had this premonition.

Could it be the only extraterrestrial cook in the canteen of the military factory? He must know these interstellar words. But on second thought, he had no motive to do this. Because once the aliens settle down and work on Earth, they will be removed from their planet, and it is not bad for him not to retaliate.