The unparalleled talent of the country started from Harbin Institute of Technology

Chapter 151: Building a Wooden House with One Shot and Two Preparations (Subscription Request)

It's noon and I'm hoeing the fields, and everyone has their own hardships.

Wu Congyin has had a hard time recently, especially after he was criticized by Duan Xuefu, Zhao Fangxiong and others in Beijing last month. He has been unoccupied since returning to Harbin Institute of Technology.

The two patriarchs, Li Rui and Liu Deben, wanted Harbin Institute of Technology to host a lecture next summer, and Wu Congqin also needed to find a way to do this, but he had no idea where to start no matter how hard he tried.

"What are you so happy about?"

When Wu Congxin returned to the office, he saw Wang Duoyu and the others gathered together, and they seemed quite happy.

When he clearly understood that it was Sergei Novikov who wrote the letter to Wang Duoyu, he was stunned and froze on the spot.

After a while, he finally reacted and looked at Wang Duoyu excitedly and said:

"Duoyu, this is definitely an opportunity for our Harbin Institute of Technology. You should quickly write a letter to those math professors and ask for their opinions. No, no, no, I'll write it."

At this time, Wu Congqin was already somewhat incoherent.

Wang Duoyu was speechless and laughed when he saw this.

It is really too early to say these things now. Even if the higher authorities approve the Harbin Institute of Technology's Diao Pai electric bicycle project to become a school-enterprise, it will be difficult for Harbin Institute of Technology to host an academic symposium next year.

In today's Harbin Institute of Technology, besides Wang Duoyu, are there any other outstanding people?
Lu Jiaxi's international status is also quite embarrassing, because the Steiner-related theories he studied are not a hot field in the global mathematics community. Otherwise, he would have been recruited by the Institute of Mathematics of the Chinese Academy of Sciences long ago.

In addition, there is Professor Wu Congxin.

However, Wu Congyin is very ordinary in the national mathematics community, and he is not even a small shrimp in the international community.

The status of Harbin Institute of Technology in China is also very embarrassing.

Therefore, the possibility of holding an academic seminar is very low.

The most important point is that Chen Shiing-Shen will operate internationally, and the higher-ups will also support Wang Duoyu and others in going global.

It's not that Wang Duoyu will not come back after going abroad, but that he should go abroad to pretend, well, to show off in front of others and expand China's reputation abroad.

There is no way. Now that reform and opening up have taken place, we need to eat first before we can talk about other things.

Half a day later, Wang Duoyu had to ask Liu Deben and others to leave the office with a sullen face.

After Wu Congxin reported to Lao Liu, he came to find Wang Duoyu, hoping that the latter could help.

But Wang Duoyu could only write back to Sergei Novikov, but he would not persuade him to come to Ice City.

Moreover, Wang Duoyu could not convince the other party. After all, they had only met once.

Of course, Wang Duoyu did not expose Liu Deben and the others' beautiful dream, but he would definitely not cooperate with such a useless waste of expression.

Two days later, a new brushless DC motor was produced in the Mechanical Engineering Department teaching building.

After testing, there were many loopholes. Due to the rush, many things were not done well, so it is better to improve them first.

However, this test has also shown one thing, that is, the brushless DC motor proposed by Wang Duoyu is much stronger than the motor proposed by Professor Zhang Jichuan and others.

In the blink of an eye, it is already the end of August. Wang Duoyu is in the classroom, taking the last class of this summer vacation.

Two hours later, the class ended.

"Dear students, school will start in two days. This course has already ended. Those who can understand it have understood it. If you can't understand it, please take the time to study harder."

"The proof of the Poincaré conjecture in four-dimensional space contains several mathematical tools. If you can master them, they will be very helpful for your future research in topology and manifolds."

"If you are committed to pure mathematics research or mathematical applications in the future, you can study topology in depth."

"Okay, our class ends here, get out of class dismissed!"

Wang Duoyu stood up and prepared to leave, but at this moment, Xue Xiaoling suddenly raised her hand and asked:
"Professor Wang, when will you start accepting master's students? I want to apply to be your graduate student!"

As soon as these words were spoken, there was a commotion in the classroom.

This is a small classroom, and there are thirty-nine students here today who are auditing.

In fact, earlier, there were 48 people in the classroom.

But many people stopped coming after listening because they no longer understood. There was no point in staying in the classroom except to make up the numbers.

In Wang Duoyu's opinion, it was already beyond expectation that 39 people came to attend the class.

Of course, this does not mean that all of these 39 people can understand the entire paper on the Poincare conjecture in four-dimensional space. Wang Duoyu will be satisfied if ten people can understand it all.

Seeing that everyone was still making noise, Wang Duoyu quickly reached out and asked everyone to quiet down.

"Okay, stop making trouble. I'm not qualified to accept master's students. I'm only an undergraduate myself."

"Don't always think about taking shortcuts. Take every step down to earth and be yourself. That's enough. I won't preach to you. Just leave it at that."

After saying that, he stood up and left the classroom.

During lunch, Yuan Jigang, Rong Guangxia and others came over. They came to eat together and asked Wang Duoyu whether he would return to his hometown tomorrow.

"Does it matter to you whether I return to my hometown or not? Why are you so concerned about these issues?"

Yuan Jigang and the others burst into laughter, and Lou Jianguo drooled:
"Duoyu, we're craving meat. Last time, you said your boss gave you a lot of bullets. These bullets are prone to rusting if left alone. Why don't we take advantage of the end of summer vacation to go back to your hometown to hunt and see how your cabin is going?"

Wang Duoyu immediately laughed and scolded:

"Jianguo, you did this on purpose, didn't you? The bullet was preserved so well, how could it possibly rust?"

At this time, our country's bullets mainly use brass as the shell material. Because brass has good corrosion resistance, ductility and air tightness, it is widely used in bullet manufacturing.

In addition, the brass cartridge case can fit tightly against the barrel, improving shooting accuracy, and the shell can be extracted smoothly, reducing wear on the inside of the barrel.

Take the 7.62*39mm rifle bullet that Wang Duoyu often uses as an example. The total weight of the bullet is grams, of which the weight of the cartridge case is about grams.

Although 9.8 grams does not seem heavy, bullets are consumables that need to be manufactured on a large scale, and brass is not easy to produce, so the manufacture of bullets becomes extremely expensive.

Of course, brass cartridge cases don't rust.

"Also, don't always think about hunting and eating meat. If you work hard on your studies, you'll eat meat until you want to vomit."

Upon hearing this, Yu Xinyao immediately said, "Well, I want to eat meat until I vomit, but I don't want fish. What do you think we should do?"

Lou Jianguo, Yuan Jigang, Rong Guangxia and the others all echoed him, and Wang Duoyu immediately started scolding him, "How about I beat you until you vomit, okay?"

All of a sudden, they all started joking around, and this area of ​​the cafeteria suddenly became very lively.

Xue Xiaoling, Dai Yian and others who saw Wang Duoyu and the others playing and joking from a distance all showed envious expressions.

Half an hour later, Wang Duoyu told Yuan Jigang and the others that he was returning to Dahonggou Village this afternoon.

Just as they were curious, the pure wooden house he planned to build in his hometown was indeed about to start.

The pine logs have been left for two months. It is almost September now and the wood has dried out enough that it should be ready for building the cabin.

Use September to build the wooden house. After simple decoration, leave it for about a month, and you can move in at the end of October or early November.

Perfect plan!
After he said that, Yuan Jigang and the others immediately signed up, saying they were willing to help build the wooden house.

Each one of them is very attentive, and they are actually the wild boar meat behind the mountains in Wang Duoyu’s hometown.

But they were thinking about going hunting, and so was Wang Duoyu.
Why?

Because he wanted to hunt some animal furs and use them as decorations at home, which would be perfect.

For example, the tiger skin he had hunted before could be placed in the most conspicuous position in the middle of the wooden house so that guests could see it as soon as they entered the door.

"Let's go, let's go back to Dahonggou Village now!"

Rong Guangxia and the others were all very active and asked Wang Duoyu to go back to the teachers' dormitory building to get bullets and guns.

That afternoon, Wang Duoyu and his team borrowed two cars and headed straight to Dahonggou Village.

When we got home, it was already evening.

The next day, Wang Duoyu and his friends got up to check the wood, and found that it was indeed ready.

Next is the construction time. Find a good day, burn some incense and pray to the gods from all directions to bless the construction to go smoothly.

Although it seems a bit superstitious, this is in the countryside and no one talks about it. On the contrary, many old people believe in it. If you don’t burn incense, you can’t dig the soil.

"No, Duoyu, this wall of yours looks too thick, doesn't it? It's just one layer of wall? Too thick, right? Why are there so many pieces of glass? Three layers of glass? You're going to defy the heavens."

As the foundation was built, under the direction of teachers from the Department of Architecture of Harbin Institute of Technology, construction began according to the construction drawings brought out by Wang Duoyu. When Tian Maohua and others looked through the drawings and materials, they raised many questions and were shocked.

Before, Lou Jianguo and his friends were worried that Wang Duoyu would freeze to death in this pure wooden house in winter.

As a result, the walls are so thick and the windows have three layers of glass, so of course it can achieve very good insulation effect.

What's more, Wang Duoyu also bought a lot of thermal insulation building materials from Bingcheng, which cost a lot of money.

Otherwise, how could Wang Duoyu have wasted more than a month writing novels to earn royalties?

If it is just a simple house, of course not much building materials will be wasted.

But if it is a wooden house with a very good living experience and is relatively modern, then the materials it consumes will not be small.

In today's era, a bicycle only costs 150 yuan, and a courtyard house in Beijing costs 1,000 to 2,000 yuan.

However, the preparation of the wood for Wang Duoyu's wooden house cost five hundred yuan in labor, and that was because the wood was free.

Otherwise, you will have to pay extra for the wood, which will be even more expensive.

In fact, the walls of houses in the Northeast are generally much thicker than those in the South. For example, the house where Wang Duoyu lives now has walls that are 50 centimeters thick.

However, the log house he was going to build now had wooden walls with a diameter of more than one hundred centimeters.

Walls of this thickness, combined with thermal insulation, can completely keep the cold air out of the house.

In addition, a fireplace will definitely be installed indoors, and the space inside the cabin will also be very warm.

Therefore, even in winter when the temperature is minus thirty or forty degrees Celsius and it is freezing outside, it will not be cold inside the wooden house.

"Okay, stop making such a fuss. You act like you've never seen the world before. Stop drooling."

Wang Duoyu laughed. He liked to see Lou Jianguo, Yu Xinyao and others looking like they had never seen the world.

It would certainly be nice to build a wooden house like this in a rural area.

And this is not a small wooden house, but a large wooden house of more than one hundred square meters.

There are many century-old pine trees in the mountains behind Dahonggou Village, but these pine trees are all in the deep mountains and old forests, so it is really difficult to cut them down and transport them back.

But for the Wang family, as long as they work together, it will naturally not be a problem.

The century-old pine trees have a diameter of more than one hundred centimeters and are as tall as an astonishing twenty to thirty meters.

You only need to cut off the thickest branches that are more than ten meters long as the walls of the wooden house. The length and width of the indoor area are about twelve meters each. This is a very typical 100-square-meter wooden house.

Of course, Wang Duoyu will definitely not just live in such a spacious wooden house. He will definitely use wooden boards to divide the house into different rooms, such as a study, kitchen, living room, bathroom, etc.

Maybe by then there will be a fireplace in the living room and one in the bedroom as well, otherwise it might be cold in the second half of the night.

"I definitely won't use curtains for the windows then. I plan to use animal skins, like this tiger skin of mine."

After hearing Wang Duoyu's introduction, Lou Jianguo, Yuan Jigang, Tian Maohua and others breathed a sigh of relief.

"What did you say? According to your blueprint, your cabin should have at least five windows, right? How many animal skins did you have to hunt for? That's too extravagant!"

Although hunting of wild animals is not prohibited at present, and beasts such as the Siberian tiger, black bear, and leopard have not yet become protected wild animals, according to Wang Duoyu's idea, my goodness, his wooden house must be worth a lot of money.

What if someone spots you?
But in the house where Wang Duoyu lives now, the tiger skin has been hanging on the wall and no one has stolen it.

Who dares to steal?
Ever since Hu Dawei stole Wang Duoyu's household registration book last year, nothing has been lost in his family.

There is also a wolf-blue dog at the door of his house, which Wang Duoyu named Bullet.

Bullet is very smart. Even if Xue Yuqing, Wang Shuting and other children want to take things from Wang Duoyu's house, they will be discovered by it.

"Of course, the more animal skins we have, the better. And if I really go hunting in the mountains, wouldn't that be even more to your liking?"

Wang Duoyu responded with a smile, and Yuan Jigang immediately said impatiently, let’s go, let’s go into the mountains to hunt now.

"I can't go into the mountains today. Let's take a day off first. It won't be too late to go into the mountains tomorrow."

They just came back last night and didn't get much rest. Besides, Wang Duoyu still needed to oversee the construction of the wooden house, so he was not in a hurry to go into the mountains.

Seeing this, Lou Jianguo and others had no choice but to give up.

Then they were surrounded by children including Xue Yuqing and Wang Shuting.

It’s not about taking them to play around the village, such as fishing or flying kites, but about letting Lou Jianguo and others be their tutors.

Although Lou Jianguo and others are not as good as Wang Duoyu in mathematical research, they are more than qualified to be tutors for Wang Shuting and others.

For example, Wang Shuting will be a third-year junior high school student after school starts in September.

The courses in the third year of junior high school will be more intense because the high school entrance examination is coming soon.

If you fail to get into high school, you either have to repeat the year or stay at home and work on the farm.

The characteristic of this era of technical secondary and primary schools is that they only started recruiting students in 1984, and they also required exams, so it’s better not to mention it.

It is impossible to find a job. Only after a few years, maybe I can go south to the Pearl River Delta to find a job in a factory.

However, the distance from Northeast China to the Pearl River Delta is more than 3,000 kilometers, and Wang Shuting's parents would definitely not be happy.

While Lou Jianguo and the others were being pestered by Wang Shuting and other children, Wang Duoyu was busy building his wooden house. Well, he was the supervisor.

The next morning, Wang Duoyu and his group made preparations and went into the mountains to hunt with guns and ammunition.

Zidan, the wolf-blue dog, also followed them into the mountains.

Last August, it was just a two-month-old puppy. Now it is over one year old and looks very powerful. When it is not wagging its tail, it looks like a wolf king.

Deep in the mountains, Wang Duoyu and his companions advanced slowly, searching carefully for prey.

This time when he went into the mountains, Wang Duoyu brought 300 bullets with him.

His nephew Wang Xiangdong and eldest nephew Xu Quanhua also brought hundreds of bullets each. This time they needed to stay in the mountains for about three days, so they brought a lot of dry food and also brought a pot.

We will cook and eat in the mountains then.

"Is that a black bear?"

On the afternoon of the second day after Wang Duoyu and his friends entered the mountains, they finally encountered a ferocious beast.

There are many ferocious beasts in the mountains, but they are distributed in various areas.

Generally speaking, within a range of nearly four or five kilometers, there are only one or two ferocious beasts such as tigers or black bears.

And the four or five kilometers area in the mountains, haha, that is a very large area.

This is not the ordinary straight-line distance of four or five kilometers. If you run to the mountain and the horse dies, you may not have walked a straight-line distance of four kilometers even if you walk more than ten kilometers in the mountains.

Wang Duoyu had heard of Ailao Mountain in his previous life. This mountain range is so magical.

The mountain behind Dahonggou Village is the Lesser Khingan Range, which is part of the Greater Khingan Range. The Greater Khingan Range is considered one of the three major dragon veins in China in feng shui.

Commonly known as Beilong!

As part of Beilong, the mountain behind Dahonggou Village is very vast, with pristine forests everywhere.

Even so, to be honest, encountering a ferocious beast really depends on luck.

This place is not Alaska, which is sparsely populated. There are rich resources there, and not many people hunt there. The area is vast and sparsely populated, which is definitely a paradise for wild animals.

But it is not the case in Dahonggou Village. Not to mention Wang Duoyu and others, let’s just talk about the neighboring villages and the nearby army unit, where the company commander Fan Rongqing is stationed. They often go to the mountains for training.

So all the wild animals in the mountains ran to hide deeper in the mountains.

If there were no more food in the mountains, these beasts would generally not enter human villages. Bang!
Wang Duoyu aimed at the black bear. Because he wanted the animal skin, he got close to it and aimed before pulling the trigger.

Only if they were from the downwind direction would Wang Duoyu and his team have a chance to get close, otherwise the black bear would have run away long ago.

Black bears are not stupid. If they don’t run away when they see more than ten humans, they must be really sick.

After a gunshot, the black bear fell to the ground.

The improved Type 7.62 automatic rifle uses 39*mm bullets. This thing is very lethal and pierced the black bear's head in one shot. It is not known whether it penetrated its body.

In fact, this gun can be regarded as AK47, with great power and first-class lethality.

Yuan Jigang was the first to run forward with a small-caliber earth rifle. Wang Duoyu did not move forward, but continued to aim at the fallen black bear.

Because he was afraid that it was not dead yet, he needed to be ready to pull the trigger at any time.

"The black bear is dead. You can come over now."

Hearing Yuan Jigang's shout, everyone finally stood up and walked quickly forward, surrounding the black bear.

"Awesome, Duoyu, you're really good, you killed him with one shot!"

Mo Ruogao looked at the black bear in front of him and couldn't help but give it a thumbs up and praise it.

The bullet passed through the black bear's forehead, leaving only a cut, but the cut was quite large.

Even so, a shot to the head preserved the animal skin perfectly.

This will be one of the decorations and curtains of Wang Duoyu's wooden house.

"Hehe, it's okay!" Wang Duoyu said modestly, then looked around regretfully and said:
"I just haven't encountered any more tigers. Otherwise, my wooden house would have been covered with another golden hide."

Lou Jianguo and the others looked at each other in silence. This was really too greedy.

Having a black bear is not enough, you also want to hunt a tiger?

Do you really think tigers are that easy to hunt?
Is the title of King of the Mountains and Chief of the Beasts undeserved?
Next, Wang Duoyu and his team quickly dismembered the black bear and kept the hide, while the black bear meat was processed and pickled with salt.

Some of it is eaten on the spot so that everyone can have a full meal, while other unusable internal organs are buried on the spot to contribute to the forest.

As night fell, Wang Duoyu and his friends found a temporary camp, lit a bonfire, and prepared to rest.

When they were all fast asleep, Zidan, the wolf-blue dog, suddenly barked incessantly in a certain direction, with its hair standing up, obviously sensing danger.

Wang Duoyu and others all crawled out of their beds, grabbed their guns immediately, and loaded their guns.

The experienced Xu Quanhua picked up a piece of wood from the campfire and threw it towards the small stream in front.

It was this brief flash of fire that allowed Wang Duoyu and the others to see the big tiger on the other side of the stream.

This golden shaded cat is very beautiful and has a huge body. It is even fatter than the one Wang Duoyu hunted last year.

Such a big tiger was about a hundred meters away from everyone. Wang Duoyu took aim and attacked without any hesitation.

Bang bang bang!
"Fuck, I forgot to turn it off!"

After pulling the trigger, Wang Duoyu regretted it.

Because before he went to bed, he adjusted the Type 78 improved automatic rifle in his hand to the three-bullet salvo mode. Just now, his eldest nephew Xu Quanhua threw out the torch, and the tiger's true face was revealed.

In such a short period of time, he had no time to think and pulled the trigger.

Because he was afraid that the tiger would run away.

However, in the three-shot mode, the rifle's accuracy will decrease, and it is possible that the tiger's skin will be shattered into pieces.

Tiger skin is very thick, and the hair on the skin is the thickest clothing of the tiger. Even in the weather of minus thirty or forty degrees Celsius, for the tiger, it is equivalent to turning on the air conditioner in summer for humans.

This shows how thick its tiger skin and fur are.

But no matter how thick the tiger skin is, it cannot withstand the threat of being a flesh and blood tiger. In the era of hot weapons, it will be killed by a 7.62*39mm bullet fired by an improved automatic rifle.

Taking AK47 as an example, after the bullet hits the human body, it will penetrate the body at a speed of 500 meters per second and can come out at the other end of the body.

Even after being fired two hundred meters, the bullet still has two thousand joules of kinetic energy.

Very powerful!

The power of the Type 47 automatic rifle is actually slightly higher than that of the AK, and its accuracy and other aspects have reached the ultimate level.

No matter how much he regretted it, the bullet had already been fired. Could Wang Duoyu put the bullet back and shoot again?

Unexpectedly, after Wang Duoyu shot, Wang Xiangdong also threw another wooden stick.

The firelight was dim, but everyone looked towards the movement tumbling down the mountainside.

Everyone was shocked when they saw this scene: Hit it?

Wang Duoyu was also surprised, but he still readjusted the single-shot mode, aimed forward, and shouted:

"Everyone, be careful. Jianguo, light the torch quickly to illuminate the area ahead. I'll be watching closely. If there's any danger, I'll shoot immediately."

Xu Quanhua had also raised his gun and aimed forward. After Wang Duoyu finished speaking, he echoed.

In their team, only Wang Duoyu, Wang Xiangdong and Xu Quanhua have the best shooting skills.

Among them, although Wang Duoyu only mastered his shooting skills last year, he has an advantage that others do not have, that is, he has used tens of thousands of bullets.

In other words, Wang Duoyu's marksmanship is all fed by bullets.

So his shooting skills are the best.

After a while, more torches were lit, and at this time, everyone saw the big tiger that had fallen into the rocky beach beside the stream.

hiss!
After confirming that the tiger was no longer moving, Lou Jianguo took a deep breath, Yuan Jigang swallowed his saliva, and the expressions on the faces of the others were very interesting.

In just a flash, Wang Duoyu just pulled the trigger and killed the big tiger?

Before tonight, everyone said that Wang Duoyu was greedy, but they didn't expect that this big tiger would deliver the goods to their doorstep that night.

After a while, everyone confirmed that there was no danger around and the tiger was still motionless, so they moved forward with guns.

Even so, on the other side of the stream, Xu Quanhua and Wang Duoyu were still holding their guns and keeping a vigilant eye on their surroundings.

It took Lou Jianguo and his team more than half an hour to finally carry the big tiger back to their temporary camp.

It’s not that they don’t want to deal with it on the other side, but there is simply no extra space on the rocky beach and they can’t do anything.

So the big tiger could only be moved to the temporary camp.

But the big tiger is really too heavy, at least more than 230 kilograms. There is no way to weigh its exact weight, so we can only guess.

Fortunately, Yuan Jigang was a soldier before, and Mo Ruogao, Lou Jianguo, Rong Guangxia and others all came from rural areas and were quite strong.

After some inspection, everyone found that the bullet had penetrated the tiger's chest directly from the left side, with two holes in total.

Even though this tiger skin has holes in it, its value is still very high.

What's more, Wang Duoyu wanted to use this tiger skin as a curtain or as a blanket.

So, even if this tiger skin is greatly discounted and not perfect, it has no effect on Wang Duoyu.

On the contrary, he had made a fortune by hunting down such a tiger by accident. How could he possibly complain about this or that?

It’s just that Wang Duoyu’s shot was in a three-bullet mode, so why didn’t the other two bullets hit the target?

Perhaps the tiger was frightened by the fire and ran away, so it avoided it?

Regardless, it's time to dismember the tiger.

But this proposal was rejected by Yuan Jigang and his team. The reason was very simple: they wanted to take photos as a souvenir.

That’s right, Yuan Jigang, that show-off, always brings his camera with him every time he goes into the mountains to hunt.

Film cameras in the 1970s were actually not expensive, only about 40 or 50 yuan each. The expensive part was the film.

A box of film containing thirty negatives costs six dollars.

There were only thirty negatives, and they were all taken very quickly.

This time when going into the mountains, Yuan Jigang prepared five boxes of film.

It was night time, and although Yuan Jigang had already taken a few photos, to be on the safe side, he still wanted to wait until tomorrow morning to take a few more photos.

Besides, it’s very late now. You should rest first instead of continuing to be busy. Otherwise, you will be busy until late at night, right?
Makes sense!
So everyone dealt with the situation briefly and went back to sleep. Only Bullet, the wolf-blue dog, remained faithfully guarding the camp, getting up from time to time to patrol.

The big tiger has been knocked down. I guess there are no other ferocious beasts on the nearby hills?
Early the next morning, the showy Yuan Jigang started to dress himself up and then began to take pictures.

Hunting a big tiger is definitely a great achievement.

Everyone was in a very good mood and took several photos together with a smile.

By the time we finished taking the photos, it was already after 8:30 in the morning.

After a lot of trouble, the big tiger was finally dismembered at ten o'clock in the morning. After eating and drinking their fill, everyone prepared to return to Dahonggou Village with their spoils.

When we returned to the village, it was already dusk.

When Wang Duoyu and his friends returned to the village with tiger skins and black bear skins, the whole village was in an uproar.

Because Wang Duoyu was going to build a wooden house, the children in the village were curiously watching near the house, and many adults in the village also came to see the novelty.

In addition, the workers who were building the wooden house had not yet finished get off work, so there were a lot of people.

Everyone saw the tiger skin and black bear skin that Wang Duoyu brought back. As for the tiger meat and black bear meat, they were not that intimidating.

"Brother Jiu, are you really going to use animal skins as curtains?" Wang Meili, Wang Meihe, Wang Shuting and the others gathered around him, staring with wide eyes and clicking their tongues, while also raising questions.

"Of course not. Whose family is so extravagant?"

Wang Duoyu glared at them and quickly denied it.

He was joking with Lou Jianguo and the others, it was nothing serious.

But if the whole village knew about this, it would be too high-profile.

Even if he really had so many animal skins, he would keep them at home instead of showing them off.

Anyway, we have the wolf-blue dog Zidan at home, and Wang Meili and the others are usually here, so the things in the house will definitely not be stolen again.

Dahonggou Village was bustling for a while before everyone dispersed.

That night, at Wang's house, Lou Jianguo and his friends all shouted that they wanted to drink wine and eat meat, this time they wanted to eat bear paws.

Bear paws are indeed difficult to swallow if not handled properly.

The same goes for tiger meat, but the most delicious thing is actually the stupid chicken stewed with mushrooms.

To be honest, other meats, especially those from wild animals, are just for the sake of trying something new.

Dog meat is also delicious. It is called fragrant meat in the south, but Wang Duoyu has never eaten it.

For the next two days, Wang Duoyu stayed at home, while Yuan Jigang and the others went back first.

School has started for them and they have to go back to class. Wang Duoyu still has to keep an eye on the construction of the wooden house, so he will go back a few days later.

It was not until September 15th that Wang Duoyu set out to return to Harbin Institute of Technology.

After returning to Harbin Institute of Technology, Wang Duoyu distributed the bacon and smoked meat he brought from home to Liu Deben and others, and then brought about ten kilograms of bacon to Lu Jiaxi's home.

"Teacher Lu, this is the bacon I brought from my hometown."

Lu Jiaxi and his wife Zhang Shuqin were very surprised and moved. They thanked him repeatedly and wanted to decline.

But their children stared at the bacon with their eyes wide open, their mouths watering.

So in the end, Lu Jiaxi and Zhang Shuqin couldn't refuse and accepted the bacon.

Wang Duoyu sat down and chatted with Lu Jiaxi for more than half an hour, mainly talking about work.

The latter was still a little worried. After all, he hardly ever left the house and just stayed in school doing scientific research.

If Zhang Shuqin hadn't asked him to move around more, Lu Jiaxi would probably have stayed in his office in the teaching building of the Department of Computational Mathematics and never come out.

Lu Jiaxi cherishes the current opportunity very much, but Wang Duoyu doesn't allow him to teach, and he feels guilty and scared.

"Teacher Lu, your task is very simple. I told you before that you need to complete the research project I gave you."

"You've been studying Steiner and block design before, but now I want you to study topological theory, which is a hot topic. For example, the Milnor conjecture is a mathematical problem that has not yet been proven."

"You can also study the four papers I wrote on the Poincare conjecture. So, you have a lot of work to do. You're a natural scientific genius, so there's no need to waste your time on the podium."

"I expect to hold a seminar next year, and you'll have ample opportunities to communicate with top mathematicians."

When it comes to understanding Lu Jiaxi, Wang Duoyu is definitely the person who knows him best besides Lu Jiaxi himself.

Lu Jiaxi is a very pure theoretical research talent. He has a very passionate love for mathematics, a love that cannot be extinguished even by storms.

If Lu Jiaxi had been allowed to enter a university or a mathematics institute more than ten years earlier to specialize in theoretical research, perhaps he could have had a good reputation in the global mathematics community like Chen Jingrun.

These research directions such as block design are not bad, but the fields are too biased and have nothing to do with the popular topics.

"Oh, I need to remind you to take better care of your health. Don't stay up late anymore. You need to get at least seven hours of sleep every day."

Wang Duoyu gave a warning and then looked at Zhang Shuqin and said:
"Doctor Zhang, you are a doctor, but you are also Teacher Lu's lover. You must do a good job of supervising her."

The latter nodded repeatedly, and Lu Jiaxi had no choice but to remain silent. He did not dare to refute, nor could he refute.

After talking with Lu Jiaxi, Wang Duoyu got up and left.

The next day, Wang Duoyu was invited to the teaching building of the Mechanical Engineering Department to visit the fully-equipped brushless DC motor.

When Zhang Jichuan, Fan Baojiang and others saw Wang Duoyu, their expressions were somewhat unnatural.

Facts have proved that the brushless DC motor proposed by Wang Duoyu, even if there is still room for further improvement, is much stronger than the brushed motor proposed by Zhang Jichuan and others before.

Brushed motors have friction and energy losses in the brushes and commutator, and are about 20% less efficient than brushless DC motors.

In addition, brushed motors produce a certain amount of noise due to the contact friction between the commutator and the brushes. Conversely, brushless DC motors run smoothly and with low noise.

There are also a series of tests such as control accuracy and service life, and the performance of brushless DC motors is better than that of brushed motors.

Of course, brushed motors are not completely useless. At least in some applications that do not require long-term operation and do not require high precision, such as small household appliances and power tools, they still play a big role.

The most important thing is that brushed motors are low-cost, which is indeed incomparable to brushless DC motors.

"Professor Wang, now that the testing is complete, can we apply for production?"

After the test was over, Liu Deben asked.

If it were before, Zhang Jichuan, Fan Baojiang and others would definitely feel resentful. After all, they were the ones who completed the brushless DC motor. Shouldn't they be asked for their opinions?

But now, they have long been impressed by Wang Duoyu.

In addition, the so-called application for production is actually a school-enterprise plan.

This school-enterprise plan was proposed by Wang Duoyu and two parents, Li Rui and Liu Deben, so we should definitely consult Wang Duoyu's opinion now.

The latter stroked the motor in front of him, pondered for a moment, and said:

"Well, we can indeed apply to establish a school-enterprise now, but we need to make preparations for both scenarios."

The leaders above may not necessarily allow Harbin Institute of Technology to set up a school-enterprise.

Although judging from the situation in the original time and space, the Chinese Academy of Sciences was able to establish the New Technology Development Company of the Institute of Computing Technology of the Chinese Academy of Sciences, but that was in 1984, and now it is 1979.

So we must make preparations for both scenarios.

(End of this chapter)