The train driver in the courtyard

The workers had already gone off work.

Fifty workers with reliable discipline and clean backgrounds were brought directly from their homes to the laboratory in Zhongshan suits.

It was impossible for the workers to communicate with anyone during the whole process and they did not know the purpose.

Once in the laboratory, the workers will conduct a body search.

This type of body search requires taking off all clothes and checking all angles, even the ears and nostrils.

It tastes a bit unpleasant.

When the workers saw that Li Aiguo was the only familiar face in the laboratory, they looked at him for help.

Li Aiguo spread his hands helplessly.

Please, I was searched too.

As a man, you just have to bear with it and it will pass.

Workers: “.”

It took a full thirty minutes to bring the worker back, verify his identity and conduct a body search.

By the time the workers started working, it was already ten o'clock in the evening.

Being stared at by a group of men in Zhongshan suits, especially those in Zhongshan suits whose eyes were very vigilant and staring at people was almost like a knife, the workers could not help but feel a little scared at this time.

Production work has been delayed.

As the project manager, Li Aiguo took on the important responsibility of a contractor and held a short meeting with the workers.

"Comrades, you have already seen the situation. This batch of electric fly traps is very important. This is a glorious task! So I hope everyone can do their best in the work."

Yes, we are making important equipment, not committing a crime. Li Aiguo's words awakened the workers.

After the workers sat down at their workstations, they immediately devoted themselves to the production work.

Li Aiguo did not dare to relax.

He constantly patrols the laboratory and immediately reminds workers to correct any irregular operations he finds.

At three o'clock in the morning, two hundred sets of fly traps were completed.

At 3:30 in the morning, Li Aiguo led his team to check every electric fly repellent device.

After confirming that the pass rate was 100%, Li Aiguo walked up to the man in the Mao suit and saluted him: "Report, 200 electric fly traps have been manufactured!"

"It's an hour and a half early, driver Li, thank you!"

The man in the Zhongshan suit went into the next office and picked up the red phone, apparently to report to his superior.

"It's done. The result is very good. No smell, no sound. Yes, red shell with golden stars on it. Have you arranged it? Then we will proceed to the next step right away."

After the man in the Zhongshan suit returned to the laboratory, he waved to the men in the Zhongshan suits who had been responsible for monitoring the workers.

"Loading."

Seeing that the work was completed, Li Aiguo was worried about going back to drive the big tractor with Chen Xueru, so he smiled and asked: "Leader, now that the task is completed, can I leave now?"

The man in Zhongshan suit was directing the loading work while stopping Li Aiguo.

"Driver Li, I heard you are quite familiar with circuits, right?"

"Know a little bit."

Li Aiguo looked at the option of electrical technology proficiency on the system panel and nodded confidently.

The man in the Zhongshan suit said, "You designed the electric fly trap, and you were responsible for its production. You are also responsible for its installation."

Li Aiguo: "."

"Don't worry, we have a dedicated installation team. You just need to keep an eye on it."

The man in the Zhongshan suit thought that Li Aiguo felt that the task was too cumbersome, so he added another sentence.

Li Aiguo nodded heavily: "Don't worry, I promise to complete the task!"

When Liu Guozhang heard Li Aiguo agree, he loosened his clenched fists.

He knows Li Aiguo too well.

This guy never likes to get involved in these troublesome things.

But this time the matter is really too big.

Although it looks like just an electric fly detector, its importance is no less than that of automatic railway signals.

If Li Aiguo had declined just now, it would probably leave a negative record.

Three forty in the morning.

Two hundred electric fly traps were loaded onto the truck, and Li Aiguo followed the man in a Zhongshan suit and boarded the GAZ jeep.

The driver started the jeep and the truck also started to rumble, but the entire convoy remained where it was and did not set off.

Li Aiguo noticed that the drivers and fully armed personnel had no intention of taking any action.

It seems that they don't know what to do next.

This incredible thought suddenly popped up in Li Aiguo's mind. He couldn't help but get nervous, and asked with trembling mouth: "Where are we going?"

"Look, you're asking such a stupid question again." The man in Zhongshan suit winked at the two armed team members.

The armed team members opened the car door and Li Aiguo got into the jeep reluctantly.

After getting in the car.

The man in the Zhongshan suit took a sealed file bag from the driver, tore open the seal with a seal on it, and took out a certificate and a page of documents.

It took him almost half a minute to carefully read just a few lines of text before he put the certificate and documents into his bag.

"Let's go, the first destination is 06."

The jeep driver stepped on the accelerator and turned the steering wheel. The jeep slowly left the Railway Research Institute compound, with the truck following closely behind.

06What code is this?

The man in the Zhongshan suit turned his head and said with a smile: "You must have a lot of questions, but let me go first..."

"Let's start with the simplest... Let me introduce myself. My name is Chen Sifang. First of all, since this is our first meeting, we should shake hands or something..." Chen Sifang waved his hand, signaling Li Aiguo to retract his right hand that had just been extended: "Sorry, according to the regulations, we should avoid unnecessary physical contact. Please forgive me."

Li Aiguo then remembered that these people had not shaken hands with anyone since they entered the Railway Research Institute.

"What about the unit?"

"Sorry, according to the regulations, we can't tell you."

"Where are we going? You don't have to tell me. I can see it myself later."

Li Aiguo finally understood what Chen Sifang meant when he first arrived.

These people are really meticulous in what they do.

Li Aiguo suddenly thought of a question, looked at Chen Sifang and asked: "Is your name a fake name?"

"You see, I knew you were a wise man."

As the vehicle turned, Chen Sifang carefully held the handrail and said with a smile, "Then things will be easy. From now on, you can't see or hear anything. You are only responsible for checking whether the electric fly arrester is installed properly."

"Tool man?"

"The term 'tool man' sounds a bit novel, but it is quite descriptive. Yes, you are indeed a tool man."

Chen Sifang is obviously a studious person. He did not forget to take out his notebook and write the three words "tool man" on it.

This word will come in handy when I train those workers who are particularly curious in the future.

There were curtains on the windows, so he couldn't see clearly what was happening outside, but Li Aiguo was already familiar with the surrounding roads and could judge his position based on every turn the driver made.

Just now the convoy passed Daliushu Road, turned to Dahuisi Road, and then turned to Zhongguancun South Road.
I smelled the delicious aroma of fried dough sticks. The only family in Beijing that can fry such delicious dough sticks is Lao Chen's. It seems that the convoy just passed the intersection of Xizhimen Street.

The body leaned to the left, the vehicle should have turned right and entered Chaofu Road.

The convoy turned to Fuchengmenwai Street and drove for more than ten minutes. Li Aiguo smelled the scent of lake water.

According to the distance measurement, we should have arrived at the North Sea now.

The convoy crossed the Beihai and continued to move forward. Li Aiguo had already guessed the destination by this time.

The facts were just as he had guessed. At around four o'clock in the morning, the convoy stopped at a secret place on the west side of the Forbidden City.

"Please come in, Driver Li," the man in the Zhongshan suit opened the car door.

Li Aiguo got out of the car, looked up at the ancient building, then straightened his collar, turned around and slung his canvas bag over his shoulder.

The canvas bag contains tools such as wrenches, pliers, and hammers.

Here he will have to perform the duties of a worker.

At noon, golden sunlight shines all over the capital.

There are constant pedestrians on the road.

The workers who were in a hurry to get off work were coated with a layer of golden light, and the crisp sound of car bells and their shouts were intertwined.

A jeep sped along the wide street and finally stopped at the gate of the courtyard.

Li Aiguo got out of the car carrying a canvas bag. The jeep turned around and left, disappearing in the crowd.

Looking at the back of the jeep, Li Aiguo finally breathed a sigh of relief.

tired.

too tired.

In just over ten hours, Li Aiguo was responsible for installing electric fly traps in important locations such as Yuquan Mountain, Xinliusuo, Haizi, Beidai, etc.

The installation was handled by a special team and Li Aiguo did not need to help.

However, he needs to ensure that the electric fly trap works properly and does not cause any harm.

This is a rather troublesome matter.

Fortunately, I have accomplished my mission.

When Li Aiguo returned home, Chen Xueru had already returned home and was preparing to cook.

"Brother Aiguo, you're back. You must be hungry. What do you want to eat? I'll make it for you right away." Chen Xueru wiped her hands and came out to greet him.

"No, I had a full breakfast. Oh, and I brought you another portion. Try it."

Li Aiguo opened the canvas bag and took out several aluminum lunch boxes.

The lunch box contained a few vegetarian dishes such as bitter gourd with fermented black beans and chili rings. The only meat dish was bacon with fermented black beans, but there were only three or five slices of bacon.

Chen Xueru didn't care when she saw it was just a home-cooked dish.

"It looks delicious. I just finished steaming the rice."

Chen Xueru scooped a spoonful of rice, picked up a piece of bitter gourd with chopsticks and put it into her mouth. She chewed it twice and her eyes suddenly widened.

She pointed at the bitter melon with her chopsticks and said, "Brother Aiguo, this bitter melon tastes really good. It was a little bitter at first.

As you chew, the crisp taste of bitter melon gradually becomes apparent, and the freshness spreads in your mouth.

At this time, the fermented black beans exude a mellow flavor, blending with the bitterness of the bitter gourd.

This is the first time I have tasted bitter melon so delicious.”

Li Aiguo was just about to say he wanted to eat more when there was a knock on the door.

"Brother Aiguo, I'm eating. I got half a pound of eggs today and made a dish of scrambled eggs with green onions. Come, I'll add a dish for you."

Nan Yi walked in with a half-full plate of eggs.

Ever since Nan Yi won two big certificates, he felt that the way the residents looked at him was different, and he could now stand up straighter in the compound.

These days, whenever he made something delicious, he would always send a portion to the Li family.

"Nan Yi, you haven't eaten yet, come and try the bitter melon that Aiguo brought back. It's much better than what you cooked." Chen Xueru took the plate and pointed at the bitter melon.

"Much better than my craftsmanship?" Nan Yi frowned.

He is considered the successor of the imperial chef.

Although he is only a level eight chef, his cooking skills are almost as good as those of a level five chef because he has been devoted to studying dishes for many years.

There are really few people in the capital whose cooking skills are far better than his.

Nan Yi felt that his technical level was being questioned, and with doubt in his heart, he picked up the chopsticks and picked up a piece of bitter gourd.

next second.

His eyes widened instantly and a look of surprise appeared on his face.

He chewed it a few times and said in surprise, "It's a perfect combination of bitterness and saltiness. This bitter melon with fermented black beans is absolutely amazing. It's exactly the same as my master described it. I thought he made it up."

As expected, an expert is an expert. Nan Yi immediately noticed the difference of this bitter melon with black bean sauce. Nan Yi looked at the dishes seriously, pointed at the aluminum lunch box, and looked at Li Aiguo.

"Brother Aiguo, can I try the following dishes?"

"can."

Nan Yi picked up the chopsticks, picked up a chili ring, chewed it twice, and his expression was exactly the same as Chen Xueru's just now.

“I will never be able to catch up with this cooking skill in my lifetime.”

Nan Yi felt hit and picked up another piece of bacon and put it into his mouth.

After chewing twice, he suddenly frowned this time.

"The taste of this bacon is just average. It's obvious that the chef is a very skilled cook. Why didn't he even control the heat when frying the bacon, and put too much salt and pepper? Is the chef trying to hide his incompetence?"

"No, this is not to hide my incompetence, but to deliberately adopt the cooking method of Shonan."

"I heard from my chef that if you cook the Shonan-style fried bacon too carefully, it will lose its characteristics. It will also be too salty and spicy."

"The tastes of people in Beijing are not that strong. Why does this chef want to use southern Hunan dishes?"

Nan Yi's mind was full of question marks. He put down his chopsticks in a daze and looked at Li Aiguo.

"Brother Aiguo, can you tell me which restaurant this dish came from? I want to learn from that chef."

Nan Yi continued to study the dishes left by his master and thought he had become the best chef in Beijing.

After eating these dishes today, he felt that there are always people better than you.

Which restaurant?
Li Aiguo also wanted to know.

This was the work meal that Chen Sifang sent to him when he was working at Haizi.

Maybe it’s because he has a big appetite, so he was given more dishes.

And the bacon was specially given to him, as the other workers did not get any bacon.

Li Aiguo didn't finish eating, so in the spirit of not wasting food, he took it back after getting Chen Sifang's consent.

"Hehe, Nan Yi, I really can't tell you about this." Li Aiguo said with a stern face.

"I just want to ask for some cooking advice, and I promise not to disturb the chef."

"If that's the case, then I can't tell you."

"."

Nan Yi was silent for a moment, and his eyes suddenly looked towards the bacon.

Bacon is a relatively rare meat these days, and not many people in Beijing like to eat Hunan-style bacon.

There are very few people who can make such authentic Hunan-style bacon.

He seemed to remember something, his expression suddenly changed, and beads of sweat appeared on his forehead.

His body trembled slightly, his hands unconsciously clenched into fists, his nails dug deeply into his palms, but he felt no pain at all.

Chen Xueru noticed that Nan Yi was acting strangely, and asked worriedly, "Nan Yi, are you sick?"

Nan Yi was awakened and said, "No, it's okay, I'm going back."

After saying that, Nan Yi turned around and ran away.

Chen Xueru looked at his back and wondered, "What's wrong with Nan Yi? It's just a few dishes. Even if they are delicious, there's no need to be like this."

******
In the following few days, the campaign to eliminate the four evils in the capital entered its climax stage.

Adults, children, workers, and veteran teachers all came out, and the air was filled with a warm atmosphere.

As a clerk in the street office, Chen Xueru also devoted herself wholeheartedly to the work of eliminating the four evils.

The Ministry of Railways, as the department responsible for the lifeline of economic transportation, has not been greatly affected.

The train runs as usual.

The workers in the locomotive depot go to and from get off work on time every day.

Researchers at the Railway Institute are busy in the laboratory every day.

When Li Aiguo saw that the logistics department of the institute delivered various experimental materials to the laboratory early in the morning, he knew that he had made the right decision to join the railway department.

After arranging today's experimental work, Li Aiguo rode his bicycle to the magnetic core memory project team of Factory 738.

After more than ten days of hard work, Zhang Qingshan and several other researchers have been manufacturing the first generation of improved magnetic core memory according to Li Aiguo's drawings.

As the last few dozen resistors were welded on, Zhang Qingshan couldn't help but clench his fists.

"Team Leader Li, we finally succeeded!"

Li Aiguo said: "Whether it is successful or not still needs to be verified in practice.

Qingshan, report the project progress to Professor Xia Zhongsu now and ask him to arrange a computer experiment on the magnetic core memory!"

"Yes!"

Zhang Qingshan and two researchers hurried to Professor Xia Zhongsu's office.

"What? You really invented magnetic core memory?"

Professor Xia Zhongsu rubbed his ears and looked at the three interns in disbelief.

You should know that although the principle of magnetic core memory has been made public, there are still many difficulties in its design and manufacturing.

In order to manufacture it, not only does it require huge investment of manpower and material resources, but it also requires the risk of project failure.

This is also the reason why the institute has been slow to make up its mind to develop magnetic core memory.

What's more, what they produced this time was an improved model of magnetic core memory.

"Yes, Professor, thanks to you for having high hopes for us and assigning us to Team Leader Li Aiguo, otherwise we would not have been able to achieve such a great achievement."

Zhang Qingshan looked at Professor Xia Zhongsu with gratitude and said.

Magnetic core memory is a core component of computers, which can be considered an achievement in this era.

Professor Xia Zhongsu almost vomited blood.

If he had known that it could be made, he would have definitely worked with Li Aiguo himself.
But at this time, as a leader, Professor Xia Zhongsu could only nod heavily.

“You are indeed the young talents I think the most.

You have lived up to my expectations and the expectations of our institute.

However, the core memory still needs to be verified to determine whether it is qualified. "

"This is exactly why Team Leader Li asked us to come to you. We need to conduct a computer test now."

“Most of the computer is already complete, but there are so many parts that need to be tested that it should be scheduled.

But the magnetic core memory is the core of storage, and needs to be determined. Let me go to the director right away."

Professor Xia Zhongsu realized the seriousness of the problem.

You should know that Deputy Director Chen is currently leading a team of seven professors and twenty researchers to prepare for the production of magnetic drums under the guidance of Russian experts.

The cost of a magnetic drum alone is hundreds of thousands of dollars.

If the magnetic core memory approach is feasible, wouldn't it be a waste of resources to continue producing magnetic drums?

Professor Xia Zhongsu informed the director of the institute of the progress of the magnetic core memory group.

The director also found it difficult.

"Old Xia, yesterday I received a report from Deputy Director Chen that the two Russian experts have arrived.

Now the professors have also been transferred here. If we interrupt it abruptly, the impact will be too great.

Let’s experiment first, and once we’re sure that the magnetic core memory works well, we’ll kill the magnetic drum project.”

Professor Xia Zhongsu said: "That's exactly what I think."

"Okay then, let's arrange for the magnetic core memory to be put on the computer for testing immediately." The director made the final decision.

Bang bang bang.

Three gongs sounded outside the gate (No).

It was the Russian expert Markov who picked up a hammer and hit the vacuum tube computer three times.

Because his good brother Li Aiguo was going to use a vacuum tube computer today, Comrade Markov naturally had to use his ancestral iron craftsmanship to ensure that there were no cold solder joints inside the vacuum tube computer.

"Captain, that's enough!"

After only three blows, Comrade Markov was exhausted and out of breath. The director felt distressed when he looked at the computer.

Fortunately, the outer shell is made of pure steel plates, otherwise it would have been dented by the Russians.

The director looked at Li Aiguo and said, "Team Leader Li, the computer is ready. I'll trouble you with the following matters."

Li Aiguo nodded, took a deep breath, took out a wrench from his canvas bag, and removed the back cover of the vacuum tube computer.

This thing was not like the computers of later generations. At most it was only as big as a box and it took up most of the room.

Zhang Qingshan brought a chair and Li Aiguo stood on it, working with a hammer and a wrench.

Wiring, fixing screws.
After a while, Li Aiguo jumped down from his chair and shouted to the operator, "It's time to test!"

The operator was a little girl. After checking the safety very carefully, she turned on the power.

Buzz, buzz, buzz. The vacuum tube computer made a roaring sound, the lights on the front panel flickered, and flames flickered inside the chassis.

Markov kindly told Li Aiguo that this was normal.

Because the filter capacitor is relatively large, sparks sometimes occur between the screen and the cathode after the power is turned on.

"Will it explode?" Li Aiguo always felt that this thing was dangerous.

"The probability is relatively small, but even if it explodes, the power will not be great." Markov said.

"you know?"

Markov thought the train driver was too cautious, and said with his chest puffed out: "I've been bombed five times, and I still survived."

Li Aiguo: "."

Well, he should find a way to design an explosion-proof cabinet for the vacuum tube computer.

At this point, the tube computer had finished warming up and the sparks inside the cabinet had disappeared.

All you can see is that each tube emits an orange-red light, which is the light emitted by the filament of the tube, used to heat the cathode of the tube.

"Self-test completed, the vacuum tube computer is operating normally." The operator's clear voice rang out in the room.

Everyone breathed a sigh of relief.

Professor Xia Zhongsu's heart, which had been hanging in his throat, finally settled down.

As long as there is no explosion, it is enough to prove that the newly installed equipment does not have major safety hazards.

Professor Xia Zhongsu issued an instruction: "Increase the power!"

An oscilloscope is installed on the panel of the tube computer, which can determine whether the current is stable by the flickering of the tube lamp.

As the current increases, the top of the leading edge of the driving current wave pulse is dragged a little bit like an integral, while the bottom of the trailing edge of the driving current wave pulse is dragged a little bit.

Seeing this scene, Professor Xia Zhongsu frowned and looked up at Li Aiguo.

"This is normal. The current drives the magnetic field of the chip memory, and it has already started reading and writing." Li Aiguo remained calm and suggested, "I suggest running the program immediately."

Professor Xia Zhongsu hesitated for a moment, turned his head to look at the director, and the director nodded, and then he gave the order.

"Continue to increase the current and connect the program!"

As the current continues to increase, the driving current wave pulse gradually stabilizes.

The specialist in charge of the operation controller immediately implemented the program.

At that time, computer development was still in its infancy. There were no high-level languages ​​such as C, C++, and JAVA. All that was used were flow charts and program papers.

连104、109乙、111、119、655、013这些原始的机指令系统表，尚且没有出现。

The input program is not directly inserted into the USB flash drive, but relies on the specialist responsible for operating the controller to operate the controller and use pure manual input.

The controller only has a binary neon light, a lever, and a few buttons, and can only be used by one person. It only takes 5 minutes to program it.

This requires the specialist in charge of the controller to have a super memory and super fast hand speed.

Da da da. The controller specialist's hand speed is in no way inferior to those of professional star-level and World of Warcraft e-sports players.

After a dazzling flurry of operations, the roar inside the vacuum tube computer gradually grew louder.

Everyone's heart was in their throat again.

(End of this chapter)