In 1964, Yan Jiecheng was still running at home and college every day as before.

Occasionally go to see Luo Gong and turn around the old man.

Until February 14, Yan Jiecheng was picked up by a military vehicle early in the morning.

When he arrived at the destination, Yan Jiecheng found that this was a military camp, surrounded by many sentry posts, and the defense was very tight.

When more and more people arrived, Yan Jiecheng and they were taken to a large auditorium.

After a while, everyone arrived, and everyone sat down according to the names in front of the table.

The head of the military district also arrived.

As the commander-in-chief, he first announced the official launch of the Beijing Metro project today.

This project was defined above as a high-level secret combat readiness project, so it was named Project 401.

The commander-in-chief read out the various cooperating units, as well as the responsibilities and responsible persons.

Lao Xie was also promoted this time because of his rich construction experience, and was appointed as the director of the Beijing Metro Engineering Bureau of the Railway General Administration.

Yan Jiecheng was appointed as the head of the design department of the headquarters, which was equivalent to the chief designer of later generations.

Responsible for the overall design of the project.

Their department is composed of experts from the Ministry of Geology, the Military Commission of Beijing, major professional colleges and universities across the country, and the General Iron Administration.

It covers 17 majors such as communication, signaling, surveying, water supply and drainage, rolling stock, and electric power.

There are more than 1,200 staff members in the entire design department, which is extremely large.

The groundbreaking ceremony was held in the afternoon, and there was no scene of gongs and drums and flags fluttering in the whole process.

To Yan Jiecheng's surprise, Comrade Lao Chang personally presided over the groundbreaking ceremony, and he personally picked up a shovel to break ground for the subway.

However, out of the confidentiality of the war readiness project, the media was not invited to report on it less.

In this way, the construction of the Beijing subway began mysteriously.

At that time, there were very few vehicles on the road, and the construction did not have much impact on traffic.

Residents didn't even know that a subway was being built.

Of course, it may also be because the design plan has not yet been released.

Only Yan Jiecheng started the construction, and in order to do the experiment, they first let two shafts be drilled to observe the groundwater situation.

After the ceremony, someone came to give Yan Jiecheng and their department a training on confidentiality.

Design drawings, data, etc. are the core information of the design department, and ordinary people are not allowed to contact them at all.

The headquarters stipulates that the construction technicians of each bid section can only get their own drawings, and the general drawings cannot be seen.

And the technician needs to be strictly registered to receive the drawings, and after the construction is completed, no matter how worn the drawings must be returned.

Because, as we all know, even if you can't see the general map of the entire project, people who know how to do it can still calculate the protection level of the entire subway project according to individual data.

In addition, the sorting and archiving of information, this does not have to be solved by Yan to worry about them.

The headquarters has assigned a special public security department to be in charge.

The headquarters also stipulates that after the design department completes the design, the designers must hand in their design drawings and work diaries according to the page number.

The degree of secrecy was so high that Yan Xie was staggered.

The Beijing subway is the main channel project for war readiness protection and evacuation of the people.

Yan Jiecheng looked at the construction plan, and the supreme leader personally made an important instruction that "meticulous design and meticulous construction, there will definitely be many mistakes and failures in the construction process, and attention should be paid to correcting them at any time."

I was very moved in my heart, and if I made a slight mistake in my work in the future, I would also be scolded by the leader for being a fool.

If the leaders were so considerate, he wouldn't have had a dog's brain in his previous life.

Under the design policy of focusing on war preparedness and taking into account transportation, Yan Jiecheng led the design department to start a violent liver.

The first question in front of everyone is: should the whole line of Maoxiong Metro be buried below 60 meters underground, or 20~25 meters below the ground like most Western countries?

Of course, the safety of deep burial is better, but the geology of the capital is somewhat complicated.

Just like he said to Vice Minister Lu before, the conditions are not allowed!

During this period, the debate about deep burial and shallow burial also went through several twists and turns.

Although there is data support from the geological exploration work of the 911 Brigade of the Ministry of Geology, which is responsible for the construction of the subway, it is difficult to determine the deep burial.

However, under the general principle of giving priority to combat preparedness and taking into account transportation, it was finally determined to be deeply buried.

Yan Jiecheng could only grit his teeth.

After the plan was determined, everyone began to design the deep burial plan.

However, in mid-June, there were new results in geological exploration.

According to the latest survey data, the underground rock formation in Beijing has a thick and broken weathering layer, and the actual buried depth of the subway will exceed the original estimated depth.

The subway station will be buried to a depth of 160 meters, while the vicinity of the Red Temple will reach 200 meters, which is equivalent to the height of a 60-story building.

At this time, everyone found that the difficulties were far greater than previously expected.

Yan Jiecheng had no choice but to do the test first.

I asked the engineering bureau to drill two shafts, but when the shafts were 50 or 60 meters, they couldn't be done.

The groundwater is so big that it is basically impossible to pump cleanly, and the subway will be flooded.

In this case, Yan Jiecheng had no choice but to consult the leader, and after a week of discussion, he finally chose to bury it shallowly.

In order to strengthen the tunnel's prevention and control capabilities, Yan Jiecheng suggested adding an explosion-proof covering layer of about 1 meter to a place about 20 meters above the ground.

Like a big hat, protect the subway from aircraft bombing, etc.

According to Yan Jiecheng's calculations, this can withstand the intensive bombing of the planes for 100 hours.

The leather is very solid, and for military use, there is no problem at all.

In the past half a year, Yan Xie has been going out early and returning late all day, like clockwork.

Fortunately, the project was kept secret, but the command did not restrict their person, and he could go home at night.

Just to improve efficiency, Yan Jiecheng did not refuse the car assigned to him by the command again.

Because the organization regraded him in May, according to the practice of crossing the number of posts and grades up and down, according to the position, referring to the ability and seniority, Yan Xie was finally assessed as an administrative level 13.

Of course, he is only at a higher level, but his job level has not been improved.

Until now, he is still a department-level cadre, but he just enjoys the treatment of a senior cadre.

This was a very normal thing in the early days of the founding of the People's Republic of China.

Some people, don't look at them as officials in ministries and commissions, but people are administrative level 10 or 11.

Therefore, he is considered a senior cadre, and his treatment is much better than before.

Today, he supplies 15 catties of meat, 4 catties of eggs, 2 catties of sugar, 2 catties of tobacco, 5 catties of soybeans, 5 catties of cooking oil, 10 catties of chickens, and 20 catties of fish every month.

And on the three festivals of May Day, National Day and New Year's Day, 3 catties of meat, 2 catties of eggs, and 1 catty of sugar will be subsidized, and the subsidy will be doubled during the Spring Festival.

In addition to these, bread and biscuits still have to be purchased with tickets and billed at the same price.

Cakes and fruit candies are all priced at a high price.

Of course, fruits, vegetables, spices, etc. are not limited, and they are supplied according to the supply situation.

Anyway, compared to before, Yan Jiecheng felt that he was a big landlord now.

Chang Kexin was also very happy when he knew this.

Although he often enjoys the treatment of secretaries, cooks, nannies, waiters, drivers and special cars.

The black Jim drove out to represent identity.

These things are not uncommon to her, but after all, her husband earned them, and she is still very happy in her heart.

However, this car is a temporary car, and Yan Jiecheng did not trouble others, and directly refused the driver who was arranged.

This is a Jeep made in Eastern Europe, with a big butt and looks very ugly.

He asked the driver to introduce him, and after practicing two casually, he was ready to go.

This broken car, without an air conditioner, is now in the summer and can heat up to death.

The window glass is still moving back and forth, and if you accidentally smoke a cigarette, the soot will flick into the car.

At ten o'clock that night, Yan Jiecheng drove from the headquarters to his home.

As soon as I arrived at the door, I heard the dog in the yard and began to bark.

Yan Jiecheng opened the door, and a dark shadow pounced on him.

Yan Xie Cheng saw that his dead dog pounced, touched the dog's head, and said, "Little Hei, go play by yourself." ”

After Yan Jiecheng finished speaking, the dog walked away.

Yan Jiecheng thought to himself: This dog does have spirituality, and Li Chu from the alley next door really didn't lie to me.

This dog was asked for by Li Chu, the director of the Chinese medicine department of the General Hospital who treated him before.

Yan Jiecheng also learned that the guy lived in a small courtyard in the alley next door to him in March.

One evening, Yan Jiecheng met him walking his dog, and heard that his dog had given birth to a litter, so he cheekily asked for one.

Now that he had been raising it for several months, the dog was as smart as he said.

Yan Jiecheng approached the inner courtyard and saw that the light in the study was still on.

Yan Jiecheng bolted the door from the inside and headed towards the study.

Chang Kexin, who was in the study, heard the dog barking and knew that her husband was back.

At this time, he had opened the door of the study and walked out.

said: "It's so late today, when will you end here?" ”

Yan Jiecheng heard Chang Kexin's complaints, smiled and comforted: "It's almost there." ”

Although Chang Kexin didn't know what Yan Jiecheng was busy with during this time, she knew what major projects were when she thought about it.

Otherwise, Yan Jiecheng would not have mentioned a word at home.

She didn't inquire much about the discipline of confidentiality.

It's just that like most wives, the husband always complains when he comes home late every day.

The two came to the living room, and Yan Jiecheng was lying on the sofa a little tired.

Chang Kexin poured him a glass of water and snuggled aside.

"Little sister is asleep, right?" Yan Jiecheng asked.

Chang Kexin said: "This girl has slept quite early in the past few days, and she has been sleeping for more than two hours. ”

After speaking, Chang Kexin rubbed Yan Jiecheng's face and said, "Show you something." ”

As he spoke, he took out a piece of paper folded into a small piece from his trouser pocket and handed it to Yan Jiecheng.

Yan Jiecheng spread out the paper and saw that it was a checklist.

said casually: "Who is pregnant, the pregnancy period is five weeks." ”

After saying this, Yan Jiecheng suddenly felt a burst of excitement, and immediately stood up and asked, "Kexin, are you pregnant?" ”

Chang Kexin tilted her head at this time, looked at Yan Jiecheng arrogantly, and nodded.

When Yan Jiecheng was confirmed, he happily picked up Chang Kexin and smiled like a two-hundred-pound child.

In Chang Kexin's reminder to be careful of the child, Yan Jiecheng carefully put down Chang Kexin.

Then he walked up and down the living room, muttering, "What's the child's name?"

Zihan, Zihan, Zihan, Zihan, Zihan......"

The couple thought about the name all night, but still didn't come to a conclusion.

The next day, both of them had to go to work. Yan Xie thought about sending his daughter-in-law to work by himself, but Chang Kexin refused.

I had to fill her bag with fruit, sugar, and other snacks.

Yan Xie Cheng vigorously instructed his daughter-in-law not to forget to eat.

After saying it a few times, he stopped talking after being disgusted by Chang Kexin and being verbose.

Yan Jiecheng also remembered that in this era, women can really hold up half the sky.

Not to mention the pregnancy break, the confinement is only seven days.

So Yan Jiecheng could only watch his daughter-in-law, with her long legs pedaling a bicycle to work.

Yan Xie Cheng saw that it was still early for work, so he thought about going to the courtyard by the way and told the two old people at home.

As for my father-in-law's family, I can just make a phone call after I go to work.

When I arrived at the courtyard, it was the time for people to go to work, and everyone was very curious to see the car parked at the entrance of the courtyard.

Seeing Yan Jiecheng get out of the car, it caused everyone's gossip even more.

Everyone came over one after another to greet Yan Jiecheng and make friends.

Yan Jiecheng listened to the constant compliments in his ears, and although he was a little bored, he had to respond with a smile.

After all, Chinese people are like this.

If he dared to show the slightest impatience.

In the afternoon, the words about him and no one in his eyes will spread all over several alleys.

After dealing with everyone, Yan Jiecheng hurried to the house.

Yan Bugui is not ready to go to work yet, after all, there are people with bicycles, and they are faster on the road, so they go out a little later than others.

Seeing that Yan Xie came early in the morning, the couple thought something was wrong.

Hurriedly asked, "Boss, why did you come here early in the morning, what happened?" ”

Yan Xie Cheng smiled: "Mom, it's okay, I'm here to tell you that Kexin is pregnant." ”

When the three mothers heard this, they hurriedly said, "Really? ”

Yan Jiecheng hurriedly reassured again and again, and the three mothers believed it.

Standing there, he clasped his hands together and said, "Thank you to my ancestors and ancestors for making my eldest daughter-in-law pregnant." ”

Looking at his mother like this, Yan Xie said in his heart: It was your son who worked hard night and night, what does it have to do with the ancestors?

After Yan Jiecheng finished talking about business, he didn't linger long, and went to work after saying goodbye to the second elder.

When Yan Jiecheng went to work today, the first thing he did was to call his father-in-law's house and tell him about Chang Kexin's pregnancy.

After that, we began to review the drawings sent by the tunnel design department of the design department.

Now all the tunnel design drawings for the first phase of the project have come out.

As long as Yan Jiecheng reviews and signs, he can construct according to the drawings.

Looking at these drawings, Yan Jiecheng was very satisfied.

The drawings are very detailed, taking into account all aspects to be considered during construction.

Also, it's designed to be fast. This made Yan Jiecheng the happiest.

However, when it was almost noon, Yan Jiecheng discovered a big problem.

Yan Jiecheng looked at the drawings, and suddenly a cold sweat oozed from his back.

Because he noticed a big flaw in the design of the tunnel.

He found that all the design drawings did not take into account the breakthrough error of the tunnel.

This means that if the construction is carried out according to the drawings, the two or even several construction sections that have been started separately may be staggered at the time of the final connection, and the entire tunnel will not be able to be docked into a straight line.

In later designs, this penetration error should have been calculated.

Today, however, due to inexperience, the design of the tunnel design office is undercalculated by almost 20 centimeters.

Don't underestimate this area of 20 centimeters, if it is not counted, it will cause the width and height of the tunnel to be insufficient, and the locomotive may hit the wall or equipment in the future, and the track will not be paved.

That is, the limits of what they call professionally are small.

Yan Jiecheng hurriedly called Professor Jin, the person in charge of the tunnel design office, and explained the matter to him.

Professor Kim was also taken aback.

But when the news reached them, many people immediately questioned it, not believing Yan Jiecheng's judgment.

Originally, everyone was a little unconvinced that Yan Xie Cheng was the chief designer, but now that he has denied everyone's hard work in the past few months, how can they bear it.

Some nasty things began to be said.

If you don't have hair on your mouth and don't do things well, it's light.

Yan Jiecheng also heard these words, and he didn't pay too much attention to them.

After all, this person is alive and full of rivers and lakes.

He's just thinking about how to use to visually confirm this problem.