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

Chapter 175: Spring Festival: Proposing the ABC Conjecture and Forming an Aircraft Design Team
January 30, 1981, the 25th day of the twelfth lunar month.

In Courtyard No. 6, Xila Hutong, Beijing, when Wang Duoyu was deducing the key issues of Yang-Mills existence and quality gap, Lin Dehong suddenly came to his door.

"Duoyu, you're really good at hiding. I've been looking for you for ages. Is there any water? I'm dying of thirst."

In the living room, Lin Dehong complained.

He came to visit with gifts, but did not go to see Zhu Ling and the children because it was inconvenient.

Wang Duoyu poured water for the other person with a smile and listened to his complaints patiently.

To be honest, Wang Duoyu did not believe the other party's "nonsense". If he wanted to find him, how could Lin Dehong be so "miserable" given his identity?

Lin Dehong has Liu Deben's contact information. As long as he finds the latter, he will have no problem finding Wang Duoyu. After all, others may not know where Wang Duoyu has gone, but Liu Deben definitely knows.

"Duoyu, it's already 1981. When can you come and help me?"

After chatting, Lin Dehong got down to business.

In July of the previous year, he had become the supervisor and was no longer an advisor without real power.

It is impossible to say that he has no ambition.

Everyone wants to go further, and Lin Dehong is only 48 years old this year, so he can definitely take another step forward.

He has a very good relationship with Wang Duoyu and knows that Wang Duoyu has been learning about aircraft, so he hopes that Wang Duoyu can come and help.

In the past 1980, the Diao Pai Company project promoted by Wang Duoyu personally has delivered a very perfect report card, bringing the country 160 million US dollars in foreign exchange revenue.

You should know that our country's total foreign exchange revenue last year was US$1.456 billion, and Diao Pai Company earned US$160 million, accounting for about 10%.

And this is just the annual revenue of Diao Pai Company. This year's revenue data will be even more impressive, and there is also Huashun Company.

Lin Dehong has learned from Liu Deben that Huashun Company is about to produce the "Chinese Cube" game. There is no doubt that this will be another product that will generate huge foreign exchange revenue.

Although from a technical perspective, these products do not have much black technology, which means that the technology is not very advanced.

But for Lin Dehong, it was enough.

Our research and development capabilities in aircraft are not very strong. It can even be said that what we lack is this kind of innovation capability.

"Leader, you've got the wrong person. Look, as you can see, I'm writing a paper."

Wang Duoyu pointed to the manuscript on his desk and replied helplessly:
"Boss, I know you're in a hurry, but could you please not be so anxious for now? I'll definitely get back to you when I have time."

"And don't try to take advantage of me alone. If you really want to design and develop an aircraft, honestly, I suggest you find someone to help you."

Upon hearing this, Lin Dehong asked Wang Duoyu to explain what should be done.

He stayed at Wang Duoyu's house for half a day before leaving with satisfaction.

After watching Lin Dehong leave, Wang Duoyu came to the master bedroom to discuss with Zhu Ling.

Starting tomorrow, he will go out and hide during the day to avoid being disturbed.

"Where else can you hide?"

Zhu Ling was very curious, but Wang Duoyu did not explain. He only said that he would go home for meals, but he would not stay at home to write his thesis.

Of course, Zhu Ling had no choice but to agree to this.

In the next few days, Wang Duoyu's guess was right, and people came to see him one after another.

It's just that he only came back at mealtimes and bedtimes, and was not at home at other times, so those people couldn't stop him.

It's almost the New Year, but these people don't let people have any peace at all.

No. 87, Zhongguancun West Street, February 1st, the 27th day of the twelfth lunar month.

Wang Duoyu was writing a paper in his study when a person appeared at the door. When he noticed him, the other person had already arrived in front of him.

"So you are here."

Liu Xiaoli looked at the man in front of her and felt extremely happy.

She originally wanted to come to the capital again before the Spring Festival to collect the letters from readers.

In fact, she had visited Harbin Institute of Technology before coming to Beijing, but she did not meet Wang Duoyu because he had already left the school.

"Why are you here?" Wang Duoyu frowned.

He had already hidden himself in Zhongguancun, but he didn't expect that someone would still come to disturb him.

For a moment, Wang Duoyu couldn't help but think about buying another house that only he knew about.

He felt a little regretful about provoking Liu Xiaoli.

This woman has a very stubborn personality and her values ​​seem a bit distorted.

She seemed unable to accept that Zhu Ling had snatched Wang Duoyu away from her, so she was now competing with Zhu Ling for Wang Duoyu everywhere.

"Why can't I come?"

Liu Xiaoli really wanted to ask Wang Duoyu the same question, but she was afraid of making him angry, so she suppressed her anger, did not get angry, and did not answer him. Instead, she talked to him about other things in a gentle tone.

Because of Liu Xiaoli's arrival, Wang Duoyu left before the evening.

The next day he never came to Zhongguancun South Street again.

Instead, I ran to a nearby bookstore and found a relatively quiet place to sit down and write my paper.

But such a noisy place still has some impact.

Fortunately, the Spring Festival is coming soon, and Wang Duoyu no longer focuses on his thesis. Instead, he stays at home to help clean, buy New Year's goods, and post Spring Festival couplets.

With the arrival of the Spring Festival, Wang Duoyu is one year older.

On the second day of the Lunar New Year, Wang Duoyu still couldn't hide away, so he ran back to Ice City on the fourth day.

After returning to Bingcheng, on the fifth day of the Lunar New Year, he took a bus back to Dahonggou Village under the arrangement of the school security department.

He has hidden back in his hometown, so no one should be chasing him, right?

When Wang Duoyu returned to his hometown, the older children such as Zheng Baodong, Xue Yuqing and Wang Shuting were the happiest because they could receive big red envelopes again, and they could also ask their ninth uncle some math problems.

Especially Zheng Baodong, since he was praised by Wang Duoyu during the National Day last year, he has become more taciturn, because he is almost like a bride, never going out of the house and just staying in the house to study.

In the final exam of the first semester of his freshman year in high school, Zheng Baodong scored full marks in mathematics, and his total score also ranked him tenth in the grade for the first time.

"Uncle Jiu, it's great that you're back."

A group of children were surrounding him, but Wang Duoyu didn't feel annoyed. Instead, he took out gifts from the luggage he brought back.

Since he is going back to his hometown, he will definitely prepare all the gifts.

There are too many relatives in Lao Wang's family, so if we are not fully prepared, it will definitely not work.

Wang Duoyu is not short of money for these gifts, after all, he doesn't give them every day.

After the commotion, his eldest brother Wang Shoucheng and others also came over and complained: "Laojiu, your son has been born for such a long time, and you didn't bring him back for the New Year."

"Brother, the child is still too young to travel long distances. Even adults will get tired when riding in a car, let alone a child?"

After explaining, Wang Duoyu didn't say anything else.

After all, he has started a family and is no longer a child, so he can make decisions on some things by himself.

"Nineth brother, after the Spring Festival, can my sister and I go to the capital to visit my sister-in-law and nephew?"

Instead, Wang Meihe approached her ninth brother with a smile and put forward her idea.

"You can go if you want, but I won't sponsor you."

Wang Duoyu rolled his eyes at his two sisters. Their abacus beads were about to jump into his face. How could he let them get what they wanted?

As expected, Wang Meihe lamented as soon as she heard this:
"Brother Jiu, my sister and I earn so little, it's still very expensive to take the train."

After the Spring Festival last year, the two sisters followed Wang Duoyu to Bingcheng, and then went to work as workers in the Diao Pai Company factory.

The salary was not very high, but their daily expenses were not much either. Moreover, they would go to their ninth brother's house for meals from time to time, which saved them a lot of expenses.

Once they have some money in their pockets, they naturally will not be content with mediocrity and will always think about spending money.

For young people like them, traveling is the best way to spend money.

However, their monthly salary is only 37.5 yuan, so each person can save 400 yuan a year.

But if they want to go out for a trip, it would be best to go to the capital and visit their sister-in-law. Of course, the most important thing is that they can ask their ninth brother to help reimburse the travel expenses.

When they arrived in the capital, they could live directly in their ninth brother's house, which was simply too great.

However, it was a pity that their ninth brother was not so easy to fool. He exposed them in less than a second.

No matter how they acted coquettishly, Wang Duoyu remained unmoved. He even asked them to stay away and not disturb him while he was guiding Zheng Baodong and the others.

After staying in his hometown for nearly a week, Wang Duoyu returned to Harbin Institute of Technology by bus.

However, before returning to Bingcheng this time, Zheng Baoyin and Wang Jianchao both told Wang Duoyu that they wanted to come to Bingcheng and work in the Diao Pai Company's factory.

In the eyes of Zheng Baoyin and Wang Jianchao, since the two sisters Wang Meili and Wang Meihe were able to work in this factory, there was no reason why two grown men like them could not do the same.

Wang Duoyu did not agree to the two people's request.

Diao Pai Company is not his personal business, so he cannot arrange things as he pleases.

And Wang Duoyu didn't want to open this door.

The most important point is that the two sisters Wang Meihe and Wang Meili have relatively higher educational qualifications, while Zheng Baoyin and Wang Jianchao not only have little education, but are also old-fashioned.

It is best for the two of them to stay in their hometown rather than run away.

Of course they wanted to go out and try their luck, and Wang Duoyu didn't mind, and even gave them advice.

"You two can be your own bosses, like setting up a stall or something."

Wang Duoyu did not ask them to go to the south to import Hong Kong goods and then ship them back to Ice City for sale.

Instead, let them get familiar with Ice City first. If they really have such business ability, or can make it, Wang Duoyu doesn't mind helping them again.

But if they were allowed to enter the Diao Pai Company's factory directly, it would definitely not work.

Even though Zheng Baoyin and Wang Jianchao spoke eloquently, Wang Duoyu still refused to let them work as workers and instead suggested that they set up stalls.

"Brother Jiu, why don't you let Jianchao and the others enter the factory?"

On the car heading to Harbin Institute of Technology, Wang Meili asked naively.

The next moment, her ninth brother slapped her on the back of the head:

"I usually tell you to use your brain more, but this is how you use yours? Don't you think about their educational background or yours? You can complete the requirements of the Diao Pai Factory, but can they?"

"You can't even read a single word, and you still want to learn how to work in a factory?"

There is a saying that goes, "You can never learn something by being taught, but you can learn it by being taught."

How could Zheng Baoyin and Wang Jianchao grow up if they had never been in the underworld and had never suffered the beatings of society?

The matter was settled.

After returning to Harbin Institute of Technology, Wang Meili and her sister asked for leave from their leader and then took a train to Beijing.

The two sisters brought a lot of gifts, including five old hens, all alive.

If Wang Duoyu hadn't put pressure on them, his eldest brother, third brother, eighth sister and their families would probably have been able to get a few more little stupid chickens.

There were also some wild delicacies and cured meats. In short, there were quite a lot of gifts, and they were all taken to the capital by the two sisters.

Wang Duoyu was still somewhat worried about the two sisters, so before getting on the train, he repeatedly warned them to be vigilant.

After seeing the two sisters off, Wang Duoyu returned to school and got down to work.

New Year, new atmosphere, especially the lithography machine project needs a new beginning.

The Harbin Institute of Technology's lithography machine project is a collaboration with the Ministry of Mechanical and Electronics' 45th Institute and the Chinese Academy of Sciences' 109th Factory, with Harbin Institute of Technology leading the project.

In June and July last year, Harbin Institute of Technology contacted many parties and finally purchased a stepper lithography machine produced by GCA before the Spring Festival.

The actual selling price of this lithography machine is US$450,000, but Harbin Institute of Technology spent one million US dollars to buy it from someone else.

There is no other way. The scalpers must be allowed to make some money. Otherwise, Harbin Institute of Technology can forget about it.

The stepper lithography machine was finally transported back to Harbin Institute of Technology on February 16th after the Spring Festival.

With this lithography machine, the members of the lithography machine project can imitate it.

"Professor Wang, this lithography machine doesn't seem that easy to disassemble. We..."

The empty laboratory was clean, tidy and spotless. Everyone, including Wang Duoyu, wore protective clothing because the stepper lithography machine in front of them was very delicate.

If you want to imitate a lithography machine, you must first disassemble the stepper lithography machine in front of you, and the disassembly must be carried out in a dust-free workshop.

Even the experienced Xue Yuheng, Li Kangmin and Yao Wenrong were at a loss as to how to use this equipment.

Wang Duoyu was helpless. It was just a device. There was no need to treat it like a god that could not be touched or touched.

"Team Leader Xue, you have experience, don't be afraid. If anything goes wrong, we can deal with it later. Being timid will only waste time."

"The production of the Chinese Cube game cartridges has begun. Professor Shang Zhongmin and his team took some of the cartridges abroad for sale yesterday."

"So we are running out of time for our gaming chips and processor chips. If foreign chip manufacturers raise chip prices in the future, we will be in a very passive position."

After hearing what Wang Duoyu said, Li Kangmin couldn't help but say:
"Professor Wang, this is a million-dollar lithography machine. We must be careful."

If it's broken, no one can afford to pay for it!
One device costs millions of US dollars. Converted into RMB, the exchange rate this year is one US dollar to 1.63 RMB, so that's 1.63 million RMB.

Who would dare to mess with equipment of such high value?
They didn't dare to act recklessly, so Wang Duoyu could only force them to solve the problem as soon as possible.

In the past, when the equipment was not returned, they could find other excuses, but now they have no other excuses at all.

The lithography machine must be developed as soon as possible. If the lithography machine that Wang Duoyu wants is not produced before the end of this year, the entire lithography machine project will be disbanded.

As soon as the death order was issued, Xue Yuheng and others all changed their expressions, especially the R&D personnel from the 45th Institute of the Ministry of Machinery and Electronics and the 109th Factory of the Chinese Academy of Sciences, all of whom looked terrified.

If the project is disbanded, they can only return to their original units.

By then, their leaders will definitely blame them, and then none of them will be able to escape.

The times are very different now, and the spring breeze of reform and opening up has swept across the country.

The policy of reform and opening up was determined in December 1978. In the two years between 1979 and 1980, these four words have entered thousands of households and the hearts of millions of people.

In addition, in the past two years, the country has successively launched two to three thousand medium and large projects, and the 43 Project that started in the early and mid-1970s was all completed and put into production before 1980.

These fertilizer plants and other units have produced a lot of fertilizers and other products, providing strong support for the subsequent agricultural development.

In such an era, how can the R&D personnel on the front line not feel that the times are changing?

There are even some very bold people who have jumped into the sea directly.

Although the trend of going into the adult industry has not yet begun and the current trend is just a prelude, it has also affected many people.

The "ten thousand yuan household" had already appeared in the newspapers. Although it seemed short-lived, it had irritated many people. After Wang Duoyu issued the order, he ignored the matter.

The lithography machine project can only succeed, not fail.

The next day, in the teaching building of the Department of Computational Mathematics, there were many people in the lecture hall at the number theory seminar.

"Andrew, how was your first Spring Festival in China?"

In the classroom, Wang Duoyu chatted with Andrew Wiles and others.

The Spring Festival has just passed, and Andrew and his friends have just returned from Beijing a few days ago. Harbin Institute of Technology started school yesterday, and many students have returned one after another.

The New Year atmosphere is gradually fading away. Although the Lantern Festival has not arrived yet, it is coming soon.

“A very wonderful experience”

Bocherz and others gave thumbs up and praised with smiles on their faces.

From their smiles and slightly round faces, Wang Duoyu already knew that these foreigners had a very good time during the past Spring Festival.

Foreigners have never eaten such rich food, especially on a grand festival like the Spring Festival, when every household will prepare very rich food.

Of course, at this time in 1981, only some families in the city could prepare a sumptuous meal. Most people could have a meal of meat dumplings and a few pieces of meat, which was considered very good.

Especially for most rural families, their lives are still very difficult.

Even during the Spring Festival, being able to eat meat at home is already very good.

In the history of the original time and space, Wang Duoyu still remembers that when he was a child, when he was seven or eight years old, he could only eat chicken and pork during festivals such as the Spring Festival. Normally, he could eat meat at most once a month.

Most of the time, it’s all vegan food, and not much of it.

Even if it is white rice, being able to eat white rice for every meal is already very good. Most of the time, I drink porridge.

Well, during the busy farming season, we can eat white rice for three meals a day. Even if it is just paired with dried radish or sauerkraut, or seasonal vegetables such as eggplant, we can still eat it with relish, and we will lick the rice bowl clean after every meal.

After the small talk, today's seminar officially began. But at the beginning, William Thurston asked Wang Duoyu a question: "Professor Wang, what topic are you researching recently?"

Upon hearing this, the latter smiled and said:

"I've been thinking about the Collatz conjecture lately. As you know, I'm usually very busy, so I don't have much time. If you are also trying to verify this problem, we might as well discuss it."

In fact, he did not address the Collatz conjecture at all, he was just talking nonsense.

Since September last year, Wang Duoyu solved the Fermat conjecture, and after a break, he prepared to move towards the problem of Yang-Mills existence and mass gap.

He was seen several times, but he just said that the problem was too difficult and he didn't study it.

There is nothing shameful in admitting that this problem is difficult, as many top mathematicians have studied it.

Besides, there are so many math problems in the world, there is no need to dwell on the Yang-Mills existence and mass gap problem.

Today is February 17th. Wang Duoyu has indeed encountered difficulties. He knows that it is difficult to solve the problem of deduction, so he has already thought about giving up on it temporarily.

The Collatz conjecture was proposed by a French mathematician in 3. It is also known as the 1n+ conjecture or the hailstone conjecture.

The specific content is: for any natural number n, if n is an even number, divide n by 2; if n is an odd number, multiply n by 3 and then add 1.

The new number obtained is transformed in the same way until 1 is finally obtained.

To be honest, math problems like this are a bit brain-burning.

It seems very simple, but it is actually very difficult.

This conjecture is about the sequence of natural numbers and is very difficult to prove. No wonder so many mathematicians are eager to prove it.

William Thurston heard this and nodded silently.

Of course he studied the Collatz conjecture, but he couldn't prove anything.

At 4:30 in the afternoon, in the number theory seminar, everyone was watching William Thurston having a heated discussion with Wang Duoyu.

The two are discussing about the root number of an integer. The product of all its different prime factors is the root number, rad(16)= rad(2)= 2. Let the natural number

a, b, cεn, where a+b=c, and (a, b)=1 (a, b are relatively prime). An obvious conclusion is that (a, b, c) are relatively prime to each other.

Carefully examining the relationship between c and rad(abc), it is easy to find that in most cases c

But due to this situation, a huge disagreement arose between William Thurston and Wang Duoyu.

While chatting, Wang Duoyu suddenly wrote a series of formulas on the blackboard.

A mathematical problem about the ABC conjecture was born.

“It is known that there are infinitely many triples (a, b, c) such that a, b, c are coprime positive integers and q(a, b, c) > 1”

When William Thurston saw the conjecture question clearly, his eyes widened.

Jean Burgain, Andrew Wiles, Gerd Faltings, John Coates, Kenneth Ise and others at the podium all had their eyes wide open, their faces filled with disbelief.

Just like that, another top math problem was born?

Many of the people present were top mathematics PhDs and researchers with excellent mathematical talent. Although they were not as famous as Wang Duoyu, they all had top-notch brains.

So after they saw the question written by Wang Duoyu, they instantly thought of a lot of things.

"I've only proved the ABC problem so far. It encompasses many Diophantine problems, including Fermat's Last Theorem. Fortunately, I've already proved Fermat's Last Theorem."

When everyone heard what Wang Duoyu said, they immediately laughed.

Regardless of the exact nature of the ABC conjecture, let's just talk about the fact that he proved Fermat's Last Theorem. At the end of last month, after his paper was published in the "Harbin Institute of Technology Mathematical Journal", the global mathematics community was completely in an uproar.

Now, almost a month has passed, and no one has raised any objections.

Just like the Poincaré conjecture, no one dared to say anything, or no one could find fault with it.

In this way, Fermat's conjecture is not a conjecture, but a true theorem.

The ABC conjecture was proposed by Wang Duoyu, but it actually includes Fermat's Last Theorem, etc., but this conjecture is entirely a problem of concern between prime numbers.

"My guess is that there might be a deeper level of correlation between a, b, and the prime factors of a+b."

Wang Duoyu frowned and said, William Thurston was thinking about the problem and didn't say anything.

The latter has been secretly competing with Wang Duoyu. Although he came to Harbin Institute of Technology for a visiting scholar exchange this time, he is still very arrogant deep down in his heart. He does not quite admit the fact that Wang Duoyu is better than him.

Now, after more than a month of contact, he has realized that Wang Duoyu is indeed very strong.

Whether in terms of computing ability, reasoning, logical thinking, etc., Wang Duoyu completely crushes him.

He also knew that Wang Duoyu was not just a pure mathematical theory researcher, but also the initiator of mathematical application projects.

Anyway, what William Thurston learned was that Wang Duoyu had previously initiated and led the research and development of distributed computers.

As for what project Wang Duoyu has been busy with recently, William Thurston doesn't know.

Because his current idea is to learn more and spark new ideas during the next six months at Harbin Institute of Technology, so that he can produce a more influential scientific research result before next year's International Congress of Mathematicians.

So he was actually more eager than anyone else to know what theoretical scientific research task Wang Duoyu was completing.

The ABC conjecture proposed by Wang Duoyu at this moment may be a very good mathematical problem.

However, can he really prove it?

From a little after four to a little after six, Wang Duoyu was thinking, William Thurston was thinking, Gerd Faltings and others were also thinking.

A group of mathematical theory researchers from European and American countries are thinking about this problem.

Li Jun, Yang Nianzhen, Li Jianshu and others quietly left the classroom.

For Yang Nianzhen and the others, becoming Wang Duoyu's closed disciple is obviously more important at the moment. After all, the exam is in early March, and they only have more than half a month left.

The next day, Wang Duoyu sorted out the mathematical problems about the ABC conjecture and then sent it out in a letter.

Mathematical researchers such as Chen Jingrun, Yang Le, Zhang Guanghou, and Lu Qikeng will receive this letter, as will foreign researchers such as Shing-Tung Yau, Smale, and Michael Friedman.

Wang Duoyu hopes that more people can participate in solving the ABC conjecture. After all, this problem is really not easy.

In the blink of an eye, the Lantern Festival is here.

This day is February 19th. Once the Lantern Festival is over, the Spring Festival is completely over.

Zhu Hanting, Rong Guangxia, Lou Jianguo and others came to Wang Duoyu's house to eat Yuanxiao and celebrate the festival together.

Foreigners don't celebrate this festival, but William Thurston and his friends also got to eat Yuanxiao.

"Duoyu, when does the spring hunting start this year? Is it during the Qingming Festival or at the end of March?"

While eating Yuanxiao, Yuan Jigang brought up this matter again.

"I really want to go to Mohe again and hunt a tiger king. You know, a tiger king's skin is so majestic. Every time I come to your house, I really want to steal it."

Hearing his words, Lou Jianguo and others immediately laughed and scolded: Shameless!
Everyone laughed, and Wang Duoyu said unhappily:
"Your marksmanship is so bad that even if you really encountered a Tiger King, you wouldn't be able to hit him. Even if you were lucky enough to hit him, I guess you wouldn't be able to get the skin back."

As soon as Yuan Ji heard this, he became furious.

If he is not good at other things, then it's okay for him, but saying that he is not good at shooting is the same as saying that he is not good at that thing, and he will definitely be angry.

Lou Jianguo added:
"Duoyu is right. Didn't Lao Yuan find a girlfriend when he returned to the capital? I guess his girlfriend told him about it, so he's so eager to hunt the Tiger King to defend his dignity as a man."

The tiger bone wine and tiger penis wine of Tiger King are more powerful than those of ordinary tigers.

Last summer, Wang Duoyu and his team hunted a tiger king weighing 318 kilograms in Mohe. The tiger penis wine made from it had already been reserved.

Yuan Jigang didn't have a partner at that time, so he had no use for tiger penis wine.

Of course, he also got a small bottle. Although it was not much, it was useful.

Otherwise, his girlfriend wouldn't have followed him all the way from Beijing to Bingcheng, and even transferred her work relationship here. It can be imagined that the girl really wanted to date him.

Yuan Jigang, who has a partner, wants to prove himself, whether it is out of need or simply to brag to his partner.

Everyone burst into laughter, and Yu Xinyao and Tian Maohua even laughed until they cried.

"You are slandering me, he is slandering me."

Seeing Yuan Jigang pointing at Lou Jianguo and making inexplicable excuses with grief and anger, Wang Duoyu laughed even louder.

This inexplicable sense of humor cannot be understood by others, only Wang Duoyu himself understands it.

Happy times passed quickly. Wang Duoyu said that the hunting plan was the same as before, but there would be some changes this year.

There will be no hunting in April. Instead, we will go to Mohe to hunt for half a month during Labor Day in May. As for whether to continue hunting in October, we will decide when the time comes.

Anyway, Wang Duoyu definitely wants to hunt because he wants to relax.

Especially when he encountered a bottleneck and was unable to prove the existence and quality gap of Yang-Mills, going out to relax would be more helpful for him to change his mind.

To be honest, brain is a good thing, but some people have no brain at all, and some are unwilling to use their brains. Wang Duoyu, on the other hand, is a person who likes to use his brain very much.

But as I use my brain more often, I also hope to do something that doesn't require much thinking, such as hunting.

After deciding this matter, Yuan Jigang was eager to practice his shooting skills immediately.

But he still has one problem, that is bullets!
He was short of bullets, so he "borrowed" two hundred rounds of bullets from Wang Duoyu.

Anyway, Wang Duoyu has a lot of bullets. If he doesn’t have any bullets, he can just ask Lin Dehong for them.

Lou Jianguo, Zhu Hanting, Rong Guangxia and others also wanted to ask Wang Duoyu to "borrow" bullets together. When the latter heard this, he thought that in order to reduce trouble, it would be better to call Lin Dehong directly and ask his leader to help arrange it.

When I first met Lin Dehong and the others in dormitory 303, they all looked like quails.

Even Yuan Jigang, the unruly soldier in the army, is now very well-behaved.

"Duoyu, don't you want to join the training?"

Faced with Lin Dehong's invitation, Wang Duoyu shook his head and refused.

"Leader, how are you preparing for the matter I discussed with you before the Spring Festival?"

"Don't talk about Duoyu, it's too difficult. Those researchers are all making excuses and don't want to pay any attention to me."

Lin Dehong immediately complained bitterly, and Wang Duoyu did not find it strange when he heard it.

The country is short of people everywhere nowadays, so how could we possibly have additional professional research scholars to help?

"Leader, even if it's just an ordinary researcher, if you can find one, you should try your best. Aircraft development is not that simple."

Wang Duoyu sat down and discussed with the other party:

"Leader, you must have some understanding of the department you are in charge of. The design of aircraft alone involves many aspects."

Take the J-7 fighter jet as an example. In the early 21s, the Polar Bear Empire provided the manufacturing license for the MiG-11 fighter jet and R300F- engine, as well as a full set of production materials and technologies.

It even included finished raw materials that were in short supply in our country at that time.

It can almost be said that the food was fed to our mouths, but we still did not start producing the first J-7 fighter until 1964, and it was not until 1966 that it successfully made its first flight.

The MiG-21 fighter is a masterpiece of the Mikoyan Design Bureau. It is the world's first supersonic fighter with a delta-wing layout and one of the most successful fighters in the world.

Of course, it is undeniable that the J-7 fighter was the only fighter jet in our country in the 1960s and 1970s that could fly at Mach 2 and had strong interception capabilities.

It has also shot down the US D21 unmanned reconnaissance aircraft and the US U2 high-altitude reconnaissance aircraft at high altitudes.

The J-7 is very powerful. It is this fighter jet that laid the foundation of our aviation industry and defended our country's airspace.

In the late 1960s, the improved J-7, J-8, J-9 and other fighter jets were designed and improved one after another, such as their cockpits, radar systems, missiles, electronic equipment, etc. Even stealth technology was mentioned.

However, these are currently just 'fantasies' and have not yet become reality.

"So, what we need most now is to establish an aircraft design and development team, starting with the aircraft design blueprints."

"This year, Harbin Institute of Technology will apply to split the current Department of Computational Mathematics into two separate departments: the Department of Mathematics and the Department of Information Science and Engineering. This will allow us to expand our enrollment for this year's college entrance exam."

"With our existing computer and mathematics teams at Harbin Institute of Technology, we will definitely be able to complete the design and verification of the aircraft design drawings within this year."

When Lin Dehong heard Wang Duoyu's words, his eyes suddenly lit up.

Whether in the civil aviation field or the military field, a powerful aircraft must first be designed with aircraft drawings, and then verified to ensure the correctness of the aircraft drawings themselves.

Only then can wind tunnel testing be carried out.

For example, in 16, the United States wanted to build a fighter jet that was even more powerful than the most powerful F149 fighter jet at the time. General Motors and NASA's Langley Center jointly conducted 3600 hours of wind tunnel tests on different layouts. After repeated screening, they selected the tailless, curved arrow-shaped wing layout.

After such a long period of wind tunnel testing, this tailless curved arrow-shaped wing layout maintains the original subsonic performance of the F16, provides room for further improvement of supersonic and low-speed high angle of attack performance, and better takes into account the overall performance, such as increasing the volume of the internal fuel tank and providing more external attachment points, which is conducive to maneuvering and takeoff at minimum weight.

This is the research and development background of F16XL.

The F16XL fighter jet has good transonic and supersonic maneuverability and an amazing payload. However, such an extraordinary fighter jet had to be shelved due to its high cost and the fact that its avionics equipment has not yet been miniaturized.

Just because the most advanced aircraft is designed doesn’t mean it will be useful. What matters most is whether it is suitable.

The above are some examples of what Wang Duoyu and Lin Dehong talked about regarding aircraft design. These materials are confidential documents that the latter had shown to Wang Duoyu before, as well as Wang Duoyu’s own summary.

"Duoyu, if Harbin Institute of Technology can truly help design a fighter jet with superior performance, I will personally petition the leadership to award you a reward."

When Wang Duoyu heard the pie that Lin Dehong drew, he rolled his eyes. This pie was hard and difficult to chew, it would be better not to draw it.

(End of this chapter)