When Liu Hongbo received the task of "helping Chang Haonan complete the compilation of a finite element method course textbook" about a week later, he agreed with almost no psychological fluctuations.

I'm used to it.

Besides, now it's just a hand for the same junior disciples, the same generation, it's just that the age gap is a little bigger, and it's not a shame.

He was just very glad that he killed a Du Yishan halfway and snatched Chang Haonan away from him-

If it weren't for this, it would be a way to do it for your students.

Oh, and he can't even be considered his student, because Chang Haonan is still technically an undergraduate now.

In short, if that's the case, I'm afraid he won't have the face to continue to mix in the education world.

As for what made Chang Haonan write a book and hang his name, and then go to the peak of his life......

Liu Hongbo never thought about going in that direction.

It's not just a matter of academic ethics.

It's that anyone who does this kind of thing always has to weigh the other party's weight -

Take a look at the circle that Chang Haonan is in contact with now.

It can be called a great deal of talking and laughing, and there is no white ding.

Even if this kind of person becomes his graduate student, it is absolutely impossible to be manipulated.

Don't you see that even Du Yishan rarely asks about Chang Haonan's project now......

The former has also paved a lot of roads with his influence.

If it were replaced by Liu Hongbo, it would be like writing the four words of virtue and unworthiness on the brain.

It will only embarrass both teachers and students.

So it's better to be a brother.

He still has this self-knowledge.

"Hoo ......"

Liu Hongbo, who returned to the office, spread the two pages of fax he got back from Tang Lintian on the table and breathed a long sigh of relief.

What is written on the paper is the outline and basic ideas that Chang Haonan determined for the textbook.

"Start with vectors?"

He flipped through it twice, but still felt that the contents seemed a little too long.

At least the content of the first three chapters should have been covered in the basic course of the first and second years of undergraduate studies, and it seems that there is no need to repeat them here.

After thinking for a while, Liu Hongbo picked up the two pieces of paper on the table again, walked out of the office quickly, and came to his laboratory.

At this time, it is already the fifteenth day of the first lunar month, and although there are still a few days before the official registration and opening of the school, many students have already returned to school early.

"Teacher Liu."

The three graduate students who were busy in the laboratory saw their supervisor who suddenly walked in, said hello casually and continued their work.

As a relatively young professor, Liu Hongbo himself often appears in the lab, so students are not surprised.

But the purpose of his visit today is rather special.

"I have a question for you."

Liu Hongbo came to the blackboard at the other end of the laboratory, picked up a piece of chalk from the side, and wrote a two-dimensional matrix on the blackboard ζ=[1,-1,-1,1].

When he turned his head, he was greeted by three bewildered expressions.

"Teacher Liu, this is going to ......"

The three students who came back early to start the experiment were all senior masters or doctors, and they were already a little unfamiliar with the format of exams.

What's more, Liu Hongbo has never played this hand in the past.

"Suppose in a plane stress analysis the stress measured at a point without an apostrophes is this ζ on the blackboard, and now you are asked to build its components in the apostrophe, what would you do?"

The three students looked at each other for a few seconds, but the question was clearly bothersome, and one of them quickly wrote the answer on the blackboard.

ζ'=PζP(T)

where P = [cosθ, sinθ, -sinθ, cosθ].

"Good."

Liu Hongbo nodded with satisfaction:

"Then let's move to a slightly more complicated question."

He erased the blackboard and drew a beam that was fixed to the wall.

This is a beam with a bending stiffness of EI with a load of P per unit length and a spring rate of k at the other end of the beam, and now it is necessary to establish the governing equations for the beam response using four finite difference nodes.

This time, no one can give a quick result.

In fact, from the eyes of the three students, Liu Hongbo knew that they should be very confused about this question.

After a while, the boy who had just written the answer spoke with confusion:

"Mr. Liu, between these two questions...... Is there any connection? ”

"They ......"

At this time, Liu Hongbo suddenly realized that he himself could not give a systematic answer in words.

"To put it simply, the first problem can be seen as the theoretical basis for solving the second problem."

“……”

This explanation is clearly unsatisfactory.

"Teacher, I remember that you said in class before that the theoretical basis for airplanes to fly was Newton's third law proposed in 1687, but it was not until 1903 that mankind built the first airplane......"

There was a clear hint of disgruntle in the other's tone.

"You're ...... right"

Liu Hongbo stared at the blackboard for a few seconds, and then patted the shoulder of the student next to him:

"It's okay, you guys keep busy."

With that, he strode out of the laboratory with three inexplicable glances.

In fact, what Liu Hongbo proposed was nothing more than the simplest linear analysis problem in rigid body mechanics.

If these students are given enough time, they should not be unable to solve them.

But the reaction of the three of them just now shows that for the less experienced, the distance from basic mathematical knowledge to practical application of engineering is not as close as he imagined.

In other words, Chang Haonan's design of the knowledge structure of the textbook is correct.

The first three chapters are not useless.

The density of knowledge in university classrooms is often very staggering, and there is not much time for students to think and react slowly, and if the textbook is written more briefly, it is easy for students to get stuck somewhere and then fail to keep up with the class ideas.

That's why there is a saying -

In math class, I bent down to pick up a pen, and when I looked up again, it was as if I was listening to a book from heaven.

Perhaps because compared with other compilers of textbooks, Chang Haonan himself is still in his student days, so he has a more accurate grasp of these pain points.

Liu Hongbo shook his head as he walked and said with emotion:

"MD, that's outrageous."

He was going to continue to subcontract and leave the basic content to his graduate students to write.

But now I have changed my mind.

Obviously, Chang Haonan's thighs can be hugged not only in the academic world, but even in the education world.

So he decided that he had to write the book himself.

"It's time to feel Professor Chang's educational thoughts in advance......

Liu Hongbo, who pushed open the office door, told himself.

In fact, Chang Haonan originally planned to take advantage of the time when he was fishing in Haojing to write out part of the framework content before cooperating with Liu Hongbo.

This will make it easier for the other party to understand their overall idea in the book, minus a lot of later revisions.

But people are not as good as heaven, so he just wrote the beginning part, and one night he received a call from Ding Gaoheng.

"Director Ding?"

"Xiao Chang, you immediately pack up your personal belongings and go back to the capital with me tomorrow morning."

"Back to the capital?"

The other party came up with this sentence to make Chang Haonan a little confused:

"But aren't the negotiations here over yet?"

"Now the most important thing has been basically decided, and besides, the things in the capital are much more important, you have to be present."

Ding Gaoheng did not explicitly say the purpose of this trip to Beijing on the phone, but it obviously sounded very urgent.

Therefore, Chang Haonan subconsciously thought that there was something technical about him who needed to do it:

"Okay, I'm going to prepare, but can you tell us about what kind of work it is? I'm good to have a plan in advance. ”

Hearing this answer, Ding Gaoheng let out a hearty laugh:

"What, the phone call I called, can it only be to send you a mission?"

Chang Haonan rolled his eyes and said in his heart, isn't it......

Of course, he wasn't going to say that yet.

"Isn't this a reflex, when I was at home for the New Year at the beginning of last month, I also answered a phone call at about this time after dinner, and I was called to Ho Jing's side."

"This time...... It's an accident, and the unexpected situation ......"

Ding Gaoheng, who talked about this matter, was also a little embarrassed, after all, he recommended Chang Haonan as a technical adviser to the negotiation delegation.

At the beginning, I only wanted to let the latter play some gatekeeping role, but no one expected that it would come and go and talk about the civil aviation industry in China.

At least the regional airliners built in the future can be certified by both China and Europe, as long as their own technical level is excellent, they will not worry about no sales.

This is the case with brand effect, even if it is exactly the same thing, it is easier to be recognized if it is hung up with a xx standard brand.

In terms of the aviation industry, Europe and the United States are the first mover countries, so it is natural that they account for the most recognition.

From this point of view, Chang Haonan can be said to be the hero of the entire Huaxia aviation industry this time.

"Don't worry, it's a good thing to call you this time, and I'll know when you go back to the capital with me tomorrow."

Ding Gaoheng was thinking about what benefits to come up with to grab people from the State Science and Technology Commission, and said with relief on the other end of the phone.

And Chang Haonan, of course, doesn't really have any opinions:

"Since that's the case, then I'll wait for the good things that Director Ding will bring tomorrow!"

……

The Boeing 737-300 of the 34th Air Division was responsible for bringing Ding Gaoheng and Chang Haonan back from Hojing.

To the latter's surprise, their plane landed directly at the airport in the western suburbs of Beijing.

Since the opening of the T0 terminal of Beijing Capital International Airport in 1958, it no longer undertakes any civil aviation business and has become a special military airport.

Chang Haonan had never done anything earth-shattering in his previous life, and although he had done a lot of work after being reborn, the time was still too short after all, and he had never seen any big occasions, so after receiving that obviously unusual phone call last night, he actually thought about a lot of possibilities.

However, judging from the scene of the pick-up in front of him, this time the battle seemed to be much bigger than he expected.

In the distance, the BJ2020 and other common cars in front and behind the convoy are not to mention, while in the middle are a few black luxury cars with exquisite workmanship and square heads.

Even if Chang Haonan doesn't know much about cars, he still knows it.

Nissan Duke King V6.

It is considered the last generation of Nissan's luxury car.

Of course, this year the army even has a Mercedes-Benz S600, but it will not appear here, but in the hands of some military enterprises.

And according to the course of history, there is not much time left before "no business is allowed", and many military enterprises have begun the process of liquidation or divestment.

In short, in this year, the fleet of several dukes and kings has been quite acceptable.

After getting off the plane, Chang Haonan followed behind Ding Gaoheng and sat in one of the convoys under the leadership of several staff members in casual suits.

"Director Ding, let's ...... here"

After getting into the car, Chang Haonan looked at the luxurious accessories inside the car with some restraint.

This treatment is the first time in two lifetimes combined, so you can't blame him for not letting go.

has already arrived here, Ding Gaoheng naturally has nothing to hide, and after straightening his clothes, he replied simply:

"Jingshan Front Street."

Chang Haonan was stunned.

The name was quite unfamiliar to him, who had returned from more than twenty years later.

Ding Gaoheng next to him also saw that he couldn't understand, so he filled in another explanation:

"It's three gates."

"Hiss......"

Now Chang Haonan will know-

It was the beginning of March 1997, and the Bayi Building, No. 7 Fuxing Road, which he was familiar with in his previous life, had just broken ground at this time, so the office of Junwei was still in the three gates.

Thinking of this, Chang Haonan felt his heart beat violently a few times.

The highest-level conference he had attended before, that is, the commendation meeting within the Aerodynamics Research and Development Center, was now directly played in one step, and it would be absolutely false to say that he was not excited at all.

Just kidding, how many people have never even entered the county in their lives.

What's more, this time I was picked up by the team.

"So it's going to be a meeting?"

Ding Gaoheng nodded:

"Yes, a small-scale commendation and celebration party, of course, the semi-public statement within the army is to celebrate the official installation of the J-8C aircraft, and the more specific situation will be known when you arrive."

Chang Haonan did not continue to speak, but turned his head to look at the roadside buildings that were speeding outside the car window, so as to stabilize the somewhat fluctuating emotions just now.

Only one type of aircraft will not go to the three gates to hold a celebration, even if the J-10 is built.

And from the 00 batch of small-scale trial installation to the present is only three months, according to the training frequency of the aviation unit in the 90s, the troops may not even be able to fully understand the functions of the aircraft, and it should not be officially put into service so soon.

But since this statement is semi-public, it should not be completely fabricated, and it must be related to the J-8C model.

In other words, in the three months that he has been away from Shengjing, I am afraid that something terrible has happened!

(End of chapter)