"We are specifically engaged in manufacturing, and we often deal with iron lumps." Bangs looked at his arms, which were indeed thicker than others'.

"The last time I went to a courtyard, the cadres inside couldn't do it." The person in charge of the guidance should have been a miner before.

Bangs and a few young ones are digging underneath, this is the same as digging a tunnel, this is not very wide, about one meter eight wide, digging twenty or thirty centimeters, it is necessary to support a five-centimeter-thick plank at the top, and there is a wooden square under the wooden plank, and there is a cylindrical wood support under the wooden square.

There are also some things to support under the wood, and there are also vents.

When Erzhuzi heard this, he was not convinced, but now Erzhuzi is always vigilant and keeps his mouth shut.

But when he was working, Erzhu was like he was going crazy, and he kept working hard.

The excavated earth was transported in baskets, and then the women and others were transported to the tricycle outside the door.

"If it doesn't work, get out of the way, grind and chirp!" Xu Damao just came up and dug a few times, and he felt that he couldn't do it, and he had a weak hand in his hand, and the second pillar was next to him, and he said angrily.

Liu Hai didn't know why Erzhuzi and Xu Damao got together, they just couldn't get used to each other.

"Come on! You have the ability to come! Xu Damao was also not angry and threw away the things in his hand.

"Just like you, still a cadre?" The second pillar picked up the tools and continued to excavate.

There are a lot of copper coins in the excavated things, as well as debris and broken tiles, so this place is not easy to dig, and the use of a pickaxe, sometimes you look fine, but dig hard, maybe it will bounce up.

"This is the most difficult to dig, and when we encounter the interlayer of stone and sand when we are mining, it is also a headache." The technician in charge of the instruction also spoke.

The young and strong men took turns digging underneath, and then they got the wood down and dug it in front little by little.

At noon, everyone in the yard raised funds to eat together, that is, each person gave some food stamps or something, and the yard cooked rice uniformly.

At this time, when you go to someone's house, you have to take out food stamps a lot of times, and food stamps are hard currency at this time.

At noon, several people were dirty, and several people sat at a table, bangs, two pillars, Xu Damao, the boss of the second uncle's family, the eldest of the third uncle's family, and a few others, and the technician in charge of guidance was also at this table.

What I ate was stewed with radish and pig in the water, and the pig was pulled back by Liu Hai in the morning when he went to the Dahongmen Meat Factory.

"You live well in this yard, and they are very united, and when they went to a yard two days ago, they ate their own food, and they quarreled when they worked." The person in charge of the instructor spoke while drinking.

On this table, the bangs don't drink, and even the eldest of the second uncle's family has to be on the hour.

At this time, as long as the boys reach a certain age to drink, no one will stop them, some children drink, and adults go out to show off.

"Most of the neighbors are at odds." Bangs spoke.

Xu Damao's lover came over with a bowl and sandwiched a few pieces of meat into Xu Damao's bowl, and Erzhuzi was also depressed to death when he saw this scene on the side.

I have to say that Xu Damao's vision is good, Teacher Ran has to be tall, although his appearance is not very high, but the identity of the teacher is different.

At this time, the teacher is very respected, and the parents of the students have to greet the teacher affectionately when they see the teacher on the road.

And the students at this time are afraid of the teacher, at this time the student is naughty and disobedient, it is really beaten, he was beaten by the teacher in school, he didn't dare to say it when he went home, and he was beaten by his parents again.

After Mr. Ran opened this head, several other married lovers also came to put meat in their men's bowls, and the bangs they saw were also very hot, and they ate a mouthful of dog food.

Working in the afternoon, the second pillar was on top of Xu Damao, constantly saying that Xu Damao was not a man, and he couldn't do anything.

Xu Damao gritted his teeth and insisted, the more this is the case, the more trouble the second pillar becomes.

By the end of the night, when Xu Damao came out, he felt unsteady when he walked.

After dinner in the evening, the second uncle assigned another task, that is, everyone came to dig for two hours after work every day, and strive to dig all the vegetable cellars in the yard within a week.

There was another incident at night, that is, the three masters stole the wooden planks that were going to be used to build the vegetable cellar, and they were discovered by the second pillar and almost sent to the police station.

In the end, the second master is in charge, let the third master look at these materials, and if the materials are missing, the third master is responsible.

Bangs was also speechless, he had slept well, but he was woken up, just for this little thing.

The next day, Liu Hai went to the maintenance department, picked up a stack of drawings and went to report to the leader.

Sun Aiguo didn't seem to have slept well, and it is estimated that he was digging a vegetable cellar when he returned home from work.

"Factory Director." Bangs shouted at the door before entering.

"Xiao Liu, you're here, sit down, you're a rare guest, you haven't been to my office for a long time." Sun Aiguo knew that Liu Hai must be in a hurry to find him, so he poured tea for Liu Hai first, and then said.

Liu Hai put down the information, quickly picked up the teacup by himself, and then Sun Aiguo poured water for himself, and said: "Digging the cellar yesterday, I have some ideas here, and I want to report to the leader." ”

"Tell me?" Sun Aiguo's eyes lit up when he heard this.

"Leader, I want to build a tunnel boring machine here." Bangs didn't say anything about the shield machine or anything like that.

"Tell me about it." Where did Sun Aiguo know what tunnel boring machine, when he heard this name, he also knew that it was not ordinary, so he quickly asked Liu Hai to talk about it.

Liu Hai took out a few drawings, which are just a few simple drawings for easy introduction.

"The tunnel boring machine is a type of tunnel boring machine, which was first used in the 19th century, and can be used to build subways, but also to dig tunnels...!" Liu Hai took out a picture and pointed to the picture to introduce Sun Aiguo.

After half an hour of introduction, Sun Aiguo understood that this thing was definitely a good thing.

"How sure are you about this?" Sun Aiguo finally asked.

"This mechanical system is not complicated, mainly the hydraulic equipment and the module of the tunnel wall behind it, but the operation is more complicated, in addition, it may not be as fast as the bombing of the tunnel."

"But there are also advantages, the first is that the safety is very high, and the second is that if you explode to dig a tunnel, the rock wall will explode and cause cracks, and I believe that with the development of technology, this equipment may eventually be able to develop into a fully automatic equipment." In fact, tunnel boring machines are not as fast as blasting guns.

Why is the shield machine so popular in the back? On the one hand, it has something to do with the large number of subway repairs at that time, after all, most of the places under the subway are dirt, so a safe operating environment is required.

Moreover, most of the subways are under the city, and the safety factor of the shield machine is much higher, and if other methods are used to excavate alone, it is likely to lead to the collapse of the surrounding area or other situations.

In addition, the limitation of explosives, as well as the potential safety hazards of firing guns, as well as the shield machine, basically the tunnel is formed at one time, which can greatly shorten the construction period.

"Since you have faith, do it." After listening to it, Sun Aiguo made a decision directly.

"If you want to study anything over there, you can study it yourself, you arrange your own time, and I won't assign you any tasks here." Sun Aiguo is still expanding production here, because many things produced here are in great demand, and the products of the motorcycle factory are basically exported now.

The excavators produced by other factories in the mainland are mainly supplied to China, and the products exported to other good friend countries are produced by motorcycle factories.

And according to the above leadership, we are expected to return to the General Assembly in the next few years.

It can be said that the credit of the motorcycle factory is relatively large, and the products exported by the motorcycle factory to brother countries, such as exporting a batch of excavators and four dislikes, after the brother countries get their hands on mining, the ore dug out is sold to us, basically barter, and then we give more mining equipment to brother countries.

These fraternal countries like these construction machinery very much, after all, mining is definitely more profitable than farming.

After the bangs finished the report, he returned to the maintenance department and took out the aircraft engine drawings.

"Section chief? What is this engine for? Li Dali and the others saw the drawings taken out by Liu Hai and asked strangely.

"This is a opposed piston engine, which is mainly used for aircraft." Liu Hai said very calmly.

Li Dali and the others were stunned, and asked in disbelief: "Section chief, are we going to build an airplane?" ”

"Be quiet, this plane has been in the international arena for many years, give it a try first, and if it succeeds, it will be good." Bangs hurriedly asked a few people to keep quiet.

When these people from the maintenance department heard this, they nodded excitedly.

"Go to work, remember to keep it a secret." Bang Hai asked a few people to make parts related to the plane.

As for the wings and the like, the bangs are not in a hurry for the time being, and wait for the engine to be manufactured in two, one for testing, and one for the manufacture of the aircraft.

The wing fuselage is made of plywood, and the main one is cheap.

Such piston engines are actually widely used, even in 2020, because the cost of use is very low, so it is widely used in patrol, fire prevention, agriculture, sightseeing, etc., and this engine has an extremely long life, and some are still in use for decades.

Now as long as you can fly in China, it is considered good, and you will not dislike any piston engines or the like at all.

Liu Hai is ready to design the shield machine, the shield machine is mainly the hydraulic system, and the front cutter, these two are the core.

Semi-automatic systems are not required at all for electrification.

The high degree of automation in the back is actually a large part of replacing manual labor.

When Bang Hai was sneaking around to build planes here, the details about the assault gun finally came out.

The higher-level leaders were very concerned about the situation of the assault artillery, so the leaders of the troops probably took a look at the information and came to report it when they got it.

"The actual combat verification of the assault gun, the results are very surprising to us, it is simply great, especially this low-light night vision observation and sighting system, which is many times more advanced than the infrared headlight system of the big brother, I suggest that this technology be included in the top secret, otherwise some people may not ......." The leaders of the army are bloody, and they are also very disgusted with the increasingly bad attitude of Big Brother.

The superior leader was holding the information and nodded: "Then it will be included in the top secret, this is not a good thing for Big Brother's new appointment, and it has often targeted us before." ”

Today's leaders already have a sense of secrecy, and the reason why there is no such awareness in history is because nothing is as good as others to keep secrets, and it doesn't have much effect.

However, in history, Big Brother was kept secret in key areas, such as mushrooms in the Great Northwest, although Big Brother's planes often came to take a look, but the specific situation was not reported to Big Brother.

As for the seismic monitoring system, which was to be developed in the 70s, when the eldest and the second child were at their most intense, there is no earthquake monitoring system yet.

"The life of the barrel has also reached the world's advanced level, and it can still be used after 800 shells, which greatly reduces the maintenance cost of our tank."

"In addition, this automatic reloading system can be used to develop our self-propelled guns on larger guns."

"There is also this engine material technology that can be applied to our tanks, which is expected to increase the service life of tank engines."

"The assault gun is fast, equipped with special armor-piercing shells, and no matter what tank, as long as it is hit, there is no chance of being spared at all."

"I propose to make assault guns in large quantities. Of course, tanks are also needed, and if it's a big deal, you can pair with the other side. ”

"In addition, Comrade Xiao Liu also designed two other models, one is the crawler model, which I suggest also be manufactured in one batch, and then sent to the plateau."

"There is also amphibious, which is also the best for amphibious landing operations."

"Amphibious can drive directly through the sea?" When the superior leader heard this, he asked in disbelief.

"There is no test data for the time being, it is judged according to the parameters designed by Comrade Xiao Liu, the sea state is not very complicated, it is completely okay, the sea state is too complicated, it still does not work, but the inland rivers and lakes are not much of a problem at all."

"Yes, it must be done!" When the superior leader heard this, he immediately said.

"My suggestion is also to do it, with this kind of amphibious assault gun, the river or anything basically can't restrict us." The troop leader also nodded.

"In addition, Comrade Xiao Liu also has a certain amount of research on armor, and he has designed a composite armor, which is to mix two layers of other materials in the middle of ordinary armor, and relevant units are researching it."

"Comrade Xiao Liu is really an all-rounder." When the higher-level leaders heard this, they also praised it greatly.

"Comrade Xiao Liu, I found that he is good at discovering the advantages of things, assault vehicles were widely used in World War II, but after the end of World War II, assault vehicles were abandoned by other countries, after Comrade Xiao Liu improved the ammunition, if there is no accident, the assault vehicle will definitely occupy a place in the war in the future."

"Which factory is going to produce this assault vehicle?" The superior asked again.

(End of chapter)