Seeing this situation, Professor Jin found Yan Jiecheng and explained the situation to Yan Jiecheng.

It turns out that the tunnel design drawings are not designed by Professor Jin and them independently.

They've only perfected the old drawings.

In Professor Jin's detailed explanation, Yan Xie Cheng realized that Mao Xiong had sent experts to help us build the subway in October 1956.

At that time, the woolly bear experts who came to the capital were all experts who participated in the construction of the Moscow subway and had rich practical experience.

As soon as they arrived in the capital, they began to devote themselves to the construction of the subway.

First of all, they spent a lot of time surveying, surveying, and surveying the terrain of bJ.

Determine where the metro can be built, determine the route of the subway, and how to connect the new town with the old town.

In addition, the subway is underground after all, and higher safety should be considered to prevent collapse.

Therefore, the depth of subway construction, the selection of tunnels and structures have been strictly planned.

Moreover, the underground structure is complex and changeable, sewers, underground water systems, loose soil, etc., these are all factors that need to be considered in the construction of subways.

With the help of Maoxiong experts, after a long period of investigation and survey, in 1958, the Railway General Subway Engineering Bureau was formally established and ready to start building the subway.

Unfortunately, the good times were short-lived.

In those three years, due to serious mistakes, coupled with large-scale natural disasters, the country fell into a serious economic disaster.

It is said that the people take food as the sky, and only by filling their stomachs can they have the strength to work, not to mention the subway construction work that costs a lot of money and labor.

Therefore, the construction of the subway had to be temporarily stopped.

Until last year, the economy had gradually eased, and the country had passed the most difficult moment.

For transportation, military preparedness. That's why the project was restarted and the unfinished subway was built.

After listening to Professor Jin's words, Yan Jiecheng knew why these people questioned themselves.

In these years, the domestic technology is backward, and they all learn from the teacher Mao Xiong.

Yan Jiecheng actually said that there was a problem with the tunnel drawings designed by the woolly bear experts, and he didn't have to think about it, it must be Yan Jiecheng's mistake.

It can't be that Mr. Mao Xiong is wrong, right?

Yan Jiecheng also understands this.

At the same time, he also knew that if his own judgment was correct, it would mean that all the more than 30,000 drawings related to the structure would have to be revised.

This is brutal for a technician who has been fighting for a long time.

However, there is no room for sloppiness in the face of science.

Yan Xie became the proof that his theory was correct.

Several trucks were applied from the headquarters to pull the people from the tunnel design office to the first three aqueducts under construction.

Just when everyone was puzzled, Yan Jiecheng did an experiment.

The sections of this canal are all straight sections. Yan Jiecheng made a projection of these sections and projected them onto the plane.

The technicians of the tunnel design office could easily see that the projection was twenty or thirty centimeters apart.

After Yan Jiecheng's experiment, these people were surprised and couldn't help themselves.

They never imagined that the woolly bear experts would make a mistake.

The facts were in front of them, and they had to agree with Yan Jiecheng's theory.

I had no choice but to bury my head in my liver and quickly change the map.

After three months of hard work, all 30,000 drawings have been changed, and the original planned start date has naturally been delayed.

Fortunately, mistakes were allowed and the tunnel design office was not held responsible.

This subway is a war readiness project, Yan Jiecheng did not dare to delay for a day, he organized people to review the revised map, and then reported the situation to the commander-in-chief.

The commander-in-chief directly called the heads of several construction units on the spot to announce the start of construction.

As for the review of the drawings of the construction unit, according to the meaning of the commander-in-chief, let them review while constructing.

The construction units are mainly the 12th Division of the Railway Corps, the Metro Engineering Bureau, and the Beijing Urban Construction Bureau.

None of them raised any objections, and naturally the real construction began.

After all, it's nothing to them. They often come across that kind of trilateral project, so it's nothing.

Yan Jiecheng, as the chief designer, knows too well how perverted this subway is.

This thing really can't be called a subway, it's simply an underground fortress, and all kinds of dark rooms are densely packed underground.

The subway is designed according to the highest standards of three preventions, which can prevent atomic radiation, chemicals and bacteria.

For every door underground, the sealing material used is the same as that of a submarine.

The line also connects the Xishan garrison and the Jingcheng Railway Station.

It can be done quickly to transport troops.

Yan Jiecheng secretly calculated that the built Beijing subway could transport the troops of five army reorganized divisions from Xishan to the city every day during the war.

Thinking of this, Yan Jiecheng was taken aback.

Why do you do this by doing your own death?

Although as the chief designer, I should know almost everything.

But I don't know what this damn thing is best.

However, Yan Jiecheng also knew that it was estimated that it would take several years for this project to be partially decrypted.

The information I know is going to be completely rotten in my heart.

Later, it was changed, and Yan Jiecheng estimated that he would also be restricted from leaving the country.

Even if there is no restriction, Yan Jiecheng will not dare to go out, and he will definitely be remembered by many people after he goes out.

I can't tell if I can come back!

With the completion of the review of the drawings, the Beijing Metro quietly began the full construction.

Due to the shallow burial of this tunnel, the on-site construction adopts open cut-and-cover construction, and the construction is completed and then landfilled.

After the design of the main structure was completed, Yan Jiecheng set his sights on electromechanical, electrical, communication, signal and interior decoration.

Of course, he also needs to communicate with the tunnel construction company at any time to understand their on-site construction situation.

Except for the necessary staff, the tunnel design department of the design department asked him to be transferred to the construction site.

Yan Jiecheng thought that after completing the design, the work would be easier.

As a result, it is now even busier.

In particular, the professional design of mechanical and electrical solutions has made a domestic manufacturer very desperate.

Everyone shouted: The concubine can't do it.

Yan Xie communicates with these factories every day to negotiate and deal with these technical problems.

These problems are really a headache, such as installing vertical ladders in a limited space underground, but the motor given by the manufacturer is too large and there is no place to install it.

This requires him to contact a new partner, or let the original factory step up technology research and development, and specially produce a motor suitable for their project.

Chang Kexin has been pregnant these days.

The three mothers are worried about their daughters-in-law, or the children in their wombs.

After cooking for the family in the afternoon, she would go to the small courtyard to cook for Chang Kexin and Yan Jiejian.

As for Yan Jiecheng, he came home late every time.

It's hard to take care of your daughter-in-law.

Although he was ashamed, there was nothing he could do.

On this day, Yan Jiecheng's comrades related to civil air defense facilities went on a business trip to visit the No. 3 Rolling Mill in Beijing.

Their project needs waterproof, fireproof, anti-poison, and smoke-proof door bodies, and they need to be produced near the capital.

Therefore, everyone brought the drawings to the rolling mill to arrange the tasks.

The Beijing subway is a key military project, and all factories in the capital need to cooperate.

This time, naturally, the command sent a driver to drive the car.

Sitting in the car, Yan Jiecheng looked at the environment around the rolling mill, and his heart was full of emotion.

When the car arrived at the gate of the rolling mill, the doorman was still the same Uncle Yang.

When the old man saw the car coming, he hurriedly walked out of the duty room, and the driver stopped the car and was about to negotiate.

Yan Jiecheng said; "Xiao Wu, I'll go tell him."

After Yan Jiecheng finished speaking, he opened the car door and went down.

Towards Old Man Yang, he said, "Uncle Yang, it's me, Yan Jiecheng." ”

As he spoke, he took out a cigarette and handed one to the other party.

When the old man saw Yan Jiecheng's action of taking out a cigarette, he immediately remembered. After all, after so many years of guarding the door, the action of taking out a cigarette still depends on Yan Jiecheng.

The action of buttoning the rope is too memorable.

Old man Yang took Yan Jiecheng's cigarette and said with a smile: "It's you kid, I heard them say that you are a cadre." ”

When Yan Xie Cheng saw this old man, he also felt very kind.

I lit a cigarette for myself and said with a smile; "It's all about serving the people."

When the old man heard this, he laughed.

He could see that although Yan Jiecheng was not smiling very seriously, his tone was very sincere.

At this time, Director Yang of the rolling mill arrived at the door.

When he came before, Yan Jiecheng had already called the rolling mill, so Director Yang had already asked the security department to pay attention to the situation at the door.

So when I got the news, I hurried out.

Seeing Yan Jiecheng, Lao Yuan shouted: "Minister Yan, Minister Yan, welcome back to guide the work." ”

Yan Xie Cheng saw that Director Yang was so enthusiastic, so he also greeted him and said; "Director Yang, you are my old leader, you are here to go back to your parents' house today, don't dare to offend."

As he spoke, the two shook hands warmly.

Everyone walked to the factory together.

When he arrived at the conference room, Yan Xie Cheng saw that Director Yang and Secretary Yang were there.

So he asked Xiao Wu, the driver of the company, to act as a guard and guard at the door.

Seeing that Director Yang's face changed, Yan Jiecheng said: "Director Yang, you should also know our intention. ”

Director Yang said: "Today, the bureau has given a notice, let us do our best to cooperate with the higher departments. ”

Director Yang actually knows very little, and today the leaders of the city bureau only told him that the person who came was Minister Yan, and let him cooperate, and don't ask for more things.

Therefore, he also didn't know the specific situation of Yan Jiecheng now, and the specific purpose of coming.

Yan Jiecheng, who he knows, is also the director of the Iron General Cadre Training Institute.

Seeing this, Yan Xie Cheng gestured to the accompanying technicians.

That comrade, seeing Yan Jiecheng's signal, took out a document from his bag and handed it to Director Yang.

After reading it, Director Yang handed it to Secretary Yang on the side.

After reading it, the two of them clearly knew the value of this document.

Knowing this, they had to actively cooperate, so they all became very serious.

Yan Jiecheng then said: "Since the two of you have understood the situation, then I will talk about our requirements." ”

Subsequently, Yan Jiecheng asked the accompanying technicians to give the drawings of the civil air defense door to Director Yang and told the two of them about the requirements.

However, these two are not professionals and do not know much about technology.

Therefore, this technical disclosure stopped.

After Director Yang apologized to Yan Jiecheng and them, he asked Secretary Yang to accompany them.

I hurried to organize a reliable technical team to complete the technical disclosure work.

Director Yang is still very capable of doing things, and he organized the technical team and brought it to the conference room half an hour later.

Yan Xie was a little surprised to see that there was still Yi Zhonghai in the technical team of the rolling mill.

But thinking about it, Yi Zhonghai, as a newly promoted eighth-level fitter in the rolling mill, is also normal to participate in it.

Yi Zhonghai was also stunned when he saw Yan Jiecheng sitting in the main seat.

As an eighth-level fitter, he walks with his head on his back in the factory.

He felt that he had succeeded.

But this will look at Yan Jiecheng, who was sitting in the main seat, looking at them with scrutinizing eyes, and his heart suddenly felt like a deflated ball, and he honestly sat down with everyone.

"Leaders, this is the technical backbone of our factory, and our technical disclosure can continue."

Yan Jiecheng nodded, and the technicians on the side immediately talked to the people in the rolling mill about the size, thickness, steel model, steel plate strength and work difference requirements of the civil air defense door.

These technicians in the rolling mill and some masters couldn't help but be stunned when they listened to the request.

That's a lot of demand!

Yan Jiecheng looked at these people carefully, and saw that their faces were normal, thinking that there was no enemy existence.

Yan Jiecheng believed that Director Yang knew what he was looking for, and he was looking for some innocent workers.

In fact, it doesn't matter if there is an enemy.

This human defense gate, in the final analysis, is just some iron doors, you know what you can do?

After the disclosure, Yan Jiecheng and they had not left, they were waiting for the internal meeting of the rolling mill to discuss the results.

If Director Yang can't take this job, Yan Jiecheng and they still need to go to other rolling mills.

About half an hour later, Director Yang walked quickly to the conference room where Yan Jiecheng was resting.

said: "I'm sorry, I made Yan wait for a long time." Just now, the technicians of our factory have demonstrated that this batch of civil air defense doors can be done in our factory. ”

When Yan Jiecheng heard this, he smiled and said, "Then I'll trouble you." ”

Yan Jiecheng turned his head to look at the colleagues who came with him, and said with a smile: "Since the matter of this people's air defense door has been settled, then let's go, and we won't disturb Director Yang and their work." ”

After hearing what Yan Jiecheng said, several people got up one after another and prepared to leave.

When Director Yang saw it, he hurriedly said: "Minister Yan, leaders, you see that this is all the meal, and the leaders will miss the meal when they go back, so it is better to take a break in our factory." ”

What Director Yang said also makes sense, now it is indeed time for dinner, and there should be no food when I return to the headquarters.

So everyone looked at Yan Jiecheng, after all, he was the leader, and he still had to decide this matter.

Yan Jiecheng looked at his watch, saw the appearance of several people, and said, "Then it's troublesome." ”

Director Yang said happily: "It's not troublesome, it's all a trivial matter." ”

Although Yan Jiecheng decided to have lunch at the rolling mill, the process that should be there will not be saved.

He immediately took out some money tickets, handed them to Director Yang and said, "This is our food stamps and food expenses at noon, and we ask Director Yang to accept them." ”

Lao Yang likes to use the food in the canteen to win over people, how can he accept it.

Yan Jiecheng finally said, if you don't collect food stamps and money, we won't eat it, and Director Yang accepted it.

Yan Jiecheng now looks at his career, and he also knows that he cherishes feathers, how can he still be as greedy for such a small bargain as before.

Director Yang received his things and went to arrange lunch.

Seeing that Yan Jiecheng had given them money tickets, several people hurriedly said, "Minister Yan, this is my money ticket." ”

Yan Xie Cheng smiled: "Just think of me as inviting you to a meal." ”

A few people listened, they were all senior technicians, and everyone didn't care about this money ticket, so they didn't object, and thanked Yan Jiecheng.