In fact, in 1996, the first prototype of the J-10 was nearly completed, and the localization of the Su-27 was also in full swing, and the blueprint for the future three-generation aircraft of the People's Air Force was very clear.

Therefore, even if his design really lands, at most it will only be taken to foreign trade, replacing the status of the J-7MG in the original timeline.

Chang Haonan, who has come over, is very aware of this, so he decided to use this model as a stepping stone from the beginning.

And judging by today's situation, it works out well.

Of course, I can't tell Li Yan these words, Project No. 10 and Project No. 11 are top secrets of Tianzi No. 1, at least he is a junior who shouldn't know too many details.

After a 15-minute break, the second half of the defense review continued, but after the presentation of Huang Zhiqiang and Chang Haonan, everyone basically had little patience to look at the imperfect semi-finished designs.

Professor Liu Hongbo, who was sitting in the first row, was a little confused.

When he was fetching water in the water room just now, he overheard a few students saying that the J-7 improved plan flowed out of the 601 Institute, and it was not the result of Chang Haonan and the four of them.

Judging from the previous defense process, Liu Hongbo actually didn't believe this statement, whether it was Chang Haonan, who made the main speech, or the other two students, a man and a woman, who supplemented the calculation process, all showed that they had their own understanding of the design plan.

It would be impossible to achieve this level if you just copied a design drawing.

But he had to think about the possibility.

On the one hand, the design they handed in showed that it really had the style of the people in the aviation industry, and on the other hand, it was really too big.

The level of students' grades, and even whether or not they cheat in the course design, are trivial, but if the aircraft design institute really has a plan to flow out, it will be a big trouble.

Even if there is a 1 in 10,000 possibility, Liu Hongbo does not dare to completely ignore it.

But then again, if you go to the investigation with great fanfare for the sake of this 1 in 10,000 chance, it will adversely affect several students, regardless of the outcome.

He was also thinking about letting that Chang Haonan be his graduate student!

Until he returned to the office after class, Liu Hongbo was still in a struggle.

"Senior brother, although your hair is indeed very thick, you may still be bald if you keep doing this." A crisp female voice suddenly sounded from the doorway.

Liu Hongbo himself is also a student of Academician Du Yishan, and he just became independent from the latter's research group last year, and he is only in his early thirties, so the academician's own students are accustomed to calling him senior brother.

"Oh, it's Senior Sister Yao, I see that you have been busy with the project of the new 7-200 wing recently, why do you have time to come to me today?" Liu Hongbo turned around and looked at the door, and it was Yao Mengna standing there.

"Elder Du went back to school today, aren't you going to see him?" Yao Mengna asked, leaning against the door frame.

Liu Hongbo, who heard this, was overjoyed, and instantly had the feeling of another village.

Because he suddenly thought that the matter could be checked by Academician Du Yishan, and the latter's connections only needed to make a phone call to the 601 Institute.

"Let's go, I just have something I want to ask Du Lao." Liu Hongbo picked up all the design materials handed in by Chang Haonan from the table, and followed Yao Mengna out of the office quickly.

Half an hour later, Du Yishan was the only one left in his office, himself and Liu Hongbo.

"Xiao Liu, if you come here today, I'm afraid it's not just as simple as looking at me." Du Yishan sat back in his chair and pointed to the stack of things Liu Hongbo was holding in his hand: "With things in your hands, are you going to assign tasks to me?" ”

"I still can't hide it from you, teacher." Liu Hongbo put the information in his hand on Du Yishan's desk with a smile on his face: "This is a big assignment handed in by a group in this aircraft design class. ”

"Big homework? I remember that you always have to find Li Guang and a few of them to be judges together? Du Yishan unscrewed the thermos cup in his hand, but found that the water in it was already cold, so he directly handed it to Liu Hongbo next to him and motioned him to pour some hot water: "What, the four of you don't agree on it?" ”

Liu Hongbo handed the thermos cup filled with water back to Du Yishan: "It's not, in fact, we all agree that this plan is perfect." ”

"Oh? I'd like to see. ”

Du Yishan finally became a little interested, and as he spoke, he turned the first page of the design description with his other hand.

"An improved version of the J-7?"

Du Yishan smiled and remembered what happened when he was young when he surveyed and mapped and imitated the J-7.

"It's rare to have the courage to try a supersonic fighter, and it's terrifying."

Liu Hongbo didn't answer this time, mainly because he really didn't know what to say.

It's not as simple as having courage at all.

Sure enough, just turning to the third page, Du Yishan's expression became serious, and the thermos cup in his hand was also put on the table.

By the time he reached the fourth page, the academician had already taken out a sharpened red and blue pencil from the pen holder and began to write and draw on the scratch paper next to him.

After about half an hour, Du Yishan finally raised his head unsatisfied: "Is this really an undergraduate design?" ”

"That's exactly what I'm here for......"

Subsequently, Liu Hongbo told Du Yishan in a short language about what happened before and his own concerns, and said that he had called after returning to the office to inquire that there was a student named Zhou Shuwan in that group, and his father did work at the 601 Research Institute in Shengjing.

"From the writing style, I can indeed see a little shadow...... Du Yishan lowered his head and thought for a while: "But after the 601 Institute completed the surveying and mapping of the basic J-7 model, it quickly handed over the follow-up tasks to the Rongcheng 611 Institute and the Zhucheng 648 Institute in accordance with the requirements of the superiors, which was 30 years ago." ”

Du Yishan's meaning is very clear, theoretically speaking, it is unlikely that the 601 Institute will have an ongoing J-7 improvement project.

"Forget it, for the sake of insurance, I'll call again to confirm." Du Yishan hesitated for a moment, picked up the receiver of a red telephone on the table, waved his hand and motioned for Liu Hongbo to wait outside the office temporarily, and then dialed a number.

A few minutes later, Du Yishan's voice came from the office: "It's okay, come in." ”

Liu Hongbo pushed the door back and entered, and saw Du Yishan reclining on a chair, holding the reading glasses that had been taken off in one hand and reading the design report in the other.

With years of understanding of his teacher, he knew that this was a manifestation of Academician Du's relaxed state.

I think it's fine.

It's just that Du Yishan's next sentence made him feel like he was struck by lightning.

"Xiao Liu, I think this Chang Haonan can come to me for graduate school, well, like Xiao Yao, it's okay to make an exception for him to study for a doctorate directly."

"Huh?"

Liu Hongbo looked confused.

Why is it that the student I only fell in love with in the morning will become my junior brother at noon?