The Boss of Yan's Family in Siheyuan

When Professor Jin saw this situation, he went to Yan Jiecheng and explained the situation to Yan Jiecheng.

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

They just improved the old drawings.

After Professor Jin’s detailed explanation, Yan Jiecheng understood that in October 1956, Mao Xiong sent experts to help us build the subway.

The bear experts who came to the capital at that time were all experts involved in the construction of the Moscow subway and had rich practical experience.

As soon as they arrived in the capital, they began to work on the subway construction.

They first spent a lot of time inspecting, measuring, and surveying the topography of BJ.

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

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

Therefore, strict planning has been carried out for the depth of subway construction, selection of tunnels and structures.

Moreover, the underground structure is complex and changeable, including sewers, underground water systems, loose soil, etc. These are all factors that need to be considered when building a subway.

With the help of experts from Mao Xiong, after a long period of inspection and survey, the China Railway Corporation Subway Engineering Bureau was finally established in 1958 and prepared to start building the subway.

Unfortunately, the good times did not last long.

Due to serious mistakes and widespread natural disasters in those three years, the country fell into a serious economic disaster.

It is said that food is the most important thing for the people, and only by filling their stomachs can they have the strength to work, not to mention the subway construction work that is costly and labor-intensive.

Therefore, we had to temporarily stop building the subway.

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

For the sake of transportation and military preparedness, this project was restarted and the unfinished subway was continued to be built.

After listening to Professor Jin's words, Yan Jiecheng understood why these people doubted him.

These days, domestic technology is lagging behind, so we all learn from our teacher, Mao Xiong.

Yan Jiecheng actually said that there was something wrong with the tunnel drawings designed by Mao Xiong experts. He didn’t even think about it. Yan Jiecheng must have been wrong.

It can’t be that Teacher Mao Xiong is wrong, right?

Yan Jiecheng also understands this very well.

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

This is very cruel to the technicians who have been working hard for a long time.

However, science cannot be taken lightly.

Yan Jiecheng proved that his theory was correct.

We requested several trucks from the headquarters to pull people from the tunnel design office to the first three water channels under construction.

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

The cross-sections of this water channel are all straight-line cross-sections. Yan Jiecheng made a projection of these cross-sections onto a plane.

The technicians at the tunnel design office can easily see that the projection difference is twenty to thirty centimeters.

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

They never thought that the bear experts would make mistakes.

The facts were right in front of them, and they had no choice but to agree with Yan Jiecheng's theory.

I had no choice but to bury my head in the sand and quickly change the picture.

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

Fortunately, the superiors allowed mistakes to be made and did not hold the Tunnel Design Office responsible.

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

The commander-in-chief directly called the heads of several construction units on site and announced the start of construction.

As for the review of the construction unit's drawings, according to the commander-in-chief's wishes, let them review while construction is underway.

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

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

After all, to them, this is nothing. They often encounter those kind of three-sided projects, so it is nothing.

As the chief designer, Yan Jiecheng knows very well how abnormal this subway is.

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

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

Every door underground is made of the same sealing material as a submarine.

This line also connects the Xishan garrison station and the Beijing Railway Station.

You can transport troops quickly.

Yan Jiecheng secretly calculated that during wartime, the built Beijing subway could transport the troops of 5 army reorganized divisions from Xishan to the city every day.

Thinking of this, Yan Jiecheng was shocked.

Why do you want to commit suicide?

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

But I don’t know what’s best about this terrible thing.

However, Yan Jiecheng also knows that it will take several years for this project to be partially declassified.

The information I know is completely rotten in my heart.

It will be changed later, and Yan Jiecheng will probably be restricted from leaving the country.

Even if there were no restrictions, Yan Jiecheng would not dare to go out. After going out, he would definitely be remembered by many people.

You may not be able to come back!

With the review of the drawings completed, the Beijing Metro quietly began full-scale construction.

Since this tunnel is buried shallowly, the on-site construction adopts open-cut construction, and the tunnel will be filled after construction is completed.

After the main structure design was completed, Yan Jiecheng turned his attention to electromechanical, electric power, communications, signals and interior decoration.

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

Except for the necessary staff in the Tunnel Design Office of the Design Department, everyone else was transferred to the construction site.

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

As a result, I am even busier now.

In particular, professional design solutions such as electromechanical ones have made a domestic mass manufacturer very desperate.

Everyone shouted: I can’t do it.

Yan Jiecheng communicates with these factories every day to negotiate and resolve these technical problems.

These problems are really a headache. For example, when installing a vertical ladder in a limited underground space, the motor provided by the manufacturer is too large and there is no place to install it.

This requires him to contact new cooperating units, or ask the original factory to step up technology research and development and specially manufacture motors suitable for their projects.

Chang Kexin has become pregnant these days.

The third aunt is worried about her daughter-in-law, or maybe she is worried about the child in her belly.

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

As for Yan Jiecheng, he comes home very late every time.

It is difficult to take care of his wife.

Although he felt ashamed, there was nothing he could do about it.

On this day, Yan Jiecheng went on a business trip with comrades related to civil air defense facilities to visit the Third Steel Rolling Plant in Beijing.

Their project requires waterproof, fireproof, poison-proof, and smoke-proof doors, and they need to be produced nearby the capital.

Therefore, everyone came to the steel rolling mill with drawings to assign tasks.

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

Naturally, the headquarters sent a driver to drive this time.

Sitting in the car, Yan Jiecheng looked at the environment around the steel rolling mill and felt filled with emotion.

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

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

Yan Jiecheng said; "Xiao Wu, let me go and talk to him."

After Yan Jiecheng finished speaking, he opened the car door and got out.

He turned towards Old Man Yang and said, "Uncle Yang, it's me, Yan Jiecheng."

As he said that, he took out his cigarettes and handed one to the other party.

When the old man saw Yan Jiecheng's action of taking out a cigarette, he immediately remembered it. After all, he had been guarding the door for so many years, and the action of taking out a cigarette still depended on Yan Jiecheng.

The action of buttoning the rope is so vivid in my memory.

Old Man Yang took Yan Jiecheng's cigarette and said with a smile: "It's you, kid. I heard they said you have become a cadre."

When Yan Jiecheng saw this old man, he felt particularly friendly.

He lit a cigarette for himself and said with a smile, "It's all about serving the people."

The old man laughed after hearing this.

He could tell that although Yan Jiecheng's smile was not serious, his tone was sincere.

At this moment, Director Yang and others from the steel rolling mill arrived at the door.

When he arrived earlier, Yan Jiecheng had already called the steel 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 hurriedly came out.

The old man Yan Jiecheng shouted: "Minister Yan, Minister Yan, you are welcome to come back to guide the work."

Seeing Director Yang's enthusiasm, Yan Jiecheng also went up to him and said, "Director Yang, you are my old boss. You are returning to your parents' home today, so you don't dare to offend me."

As they spoke, the two shook hands enthusiastically.

Let's all walk into the factory together.

When they arrived at the conference room, Yan Jiecheng saw that Director Yang and Secretary Yang were both there.

He asked his driver Xiao Wu to act as a guard and guard the door.

Seeing Director Yang and his friends' expressions change, Yan Jiecheng said: "Director Yang, you should also know the reason for our coming."

Factory Director Yang said: "Today the bureau has notified us, asking us to do our best to cooperate with the higher authorities."

Factory Director Yang actually knows very little. Today, the city bureau leader only told him that the person coming was Minister Yan and asked him to cooperate. Don’t ask more questions.

Therefore, he does not know the specific situation of Yan Jiecheng now and the specific purpose of coming.

The Yan Jiecheng he knew was also the director of the Railway General Cadre Training Academy.

Seeing this, Yan Jiecheng signaled to the accompanying technicians.

The 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 aside.

After seeing the two of them reading it, they both clearly understood the value of this document.

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

Yan Jiecheng then said: "Now that you two have understood the situation, let me tell you our requirements."

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

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

Therefore, this technical briefing has stopped.

Director Yang apologized to Yan Jiecheng and the others and asked Secretary Yang to accompany them.

I quickly organized a reliable technical team to complete the technical briefing work.

Factory Director Yang is very capable. He organized the technical team in half an hour and brought it to the conference room.

Yan Jiecheng was a little surprised to see that Yi Zhonghai was included in the technical team of the steel rolling mill.

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

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

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

He feels he is very successful.

But when he saw Yan Jiecheng, who was sitting in the main seat, looking at these people with a scrutinizing gaze, his heart suddenly felt like a deflated ball, and he followed everyone to sit down obediently.

"Dear leaders, this is the technical backbone of our factory. Our technical briefing can continue."

Yan Jiecheng nodded, and the technicians on the side immediately told the people at the steel rolling mill about the size, thickness, steel type, steel plate strength, and work tolerance requirements of the civil air defense door.

These technicians and some old masters in the steel rolling mill couldn't help but be speechless when they heard the request.

This is really a tall order!

Yan Jiecheng looked at these people carefully and saw that their faces were normal. It seemed that there were no enemy agents.

Yan Jiecheng believed that Factory Director Yang knew what he was looking for and was looking for employees with a clean foundation.

In fact, it doesn’t matter even if there are enemy agents.

After all, this door defense is just some iron doors. What can you do if you know it?

After the explanation, Yan Jiecheng and the others have not left yet. They are waiting for an internal meeting in the steel rolling mill to discuss the results.

If Director Yang can't take the job, Yan Jiecheng and the others will need to go to other rolling mills.

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

Said: "I'm sorry to keep you waiting for so long. Our factory technicians have just demonstrated that we can make this batch of security doors in our factory."

After hearing this, Yan Jiecheng smiled and said: "Then I'll trouble you."

Yan Jiecheng turned to look at his colleagues who had come with him, and said with a smile: "Now that this person's matter of guarding the door has been settled, let's go without disturbing Factory Director Yang and his colleagues."

After hearing Yan Jiecheng's words, several people got up and prepared to leave.

When Factory Director Yang saw it, he quickly said: "Minister Yan, leaders, you see it's dinner time. You will also miss the meal when you go back. Why don't you just make do with it in our factory."

What Factory Director Yang said makes sense. It is indeed lunch time, and there should be no food when we return to the headquarters.

So everyone turned to Yan Jiecheng. After all, he is the leader, so he still has to make the decision on this matter.

Yan Jiecheng looked at his watch and said, "That's troublesome."

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

Although Yan Jiecheng decided to have lunch at the steel rolling mill, he still couldn't save the necessary procedures.

Then he took out some money stamps, handed them to Director Yang and said, "These are our food stamps and food expenses at noon. Please accept them, Director Yang."

Lao Yang likes to use the food in the cafeteria to win over people, how could he accept it?

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

Now that Yan Jiecheng is looking forward to his official career, he also knows how to cherish feathers, so how can he still be greedy for such small advantages as before?

Director Yang collected the things and went to arrange lunch.

When several people saw that Yan Jiecheng had paid for them, they quickly said: "Mr. Yan, this is my money ticket."

Yan Jiecheng smiled and said, "Just think of it as me treating you to a meal."

Several people listened, and they were all senior technicians. They didn't care about the small amount of money, so they didn't object and thanked Yan Jiecheng.