In the afternoon, in a small conference room on the top floor of the aircraft department building.

A total of more than a dozen teachers and students from Academician Du Yishan's research group are sitting around the oval conference table, watching Yao Mengna draw pictures on the blackboard and talk about her research content this semester.

Whether it is a master's degree or a doctorate, one thing that every graduate student can't escape is-

Group meeting.

Because the cycle of scientific research is very long, and there is no regular standardized evaluation like an exam, the supervisor needs to keep track of the progress of his graduate students through this regular report.

Of course, there is also some meaning of giving pressure, so that graduate students can get something out every once in a while, and don't paddle too much, otherwise it will be difficult to end up if you can't finish your studies in the end.

However, in the end, the group meeting is still an informal communication within the research group, and the frequency and format depend on the supervisor.

Du Yishan's research group, or Du Yishan himself, doesn't like to hold group meetings very much, and he prefers to let each student report individually on weekdays.

In addition, the attitude of graduate students in the group towards scientific research is generally more active, so the frequency of group meetings is basically only held once at the end of each semester.

According to the past habit, after this group meeting, graduate students who do not have important projects in the summer vacation can go home on vacation.

Therefore, the atmosphere in the conference room is generally more relaxed and cheerful.

“…… The above is the main work I have carried out this semester, and I would like to thank Dr. Fang Zhen and Chang Haonan for helping me in the research process......"

As Yao Mengna's report was completed, there was a round of warm applause in the conference room.

Generally speaking, undergraduate students and first-year master's students are not required to speak in the group meeting.

So as usual, the group meeting should basically be over here.

But this time, there was also the second half.

"Ahem—"

Du Yishan cleared his throat:

"Then students, the first half of our group meeting is over, you can rest for fifteen minutes first, and when you come back, let Chang Haonan demonstrate how to carry out efficient and accurate computer simulation and auxiliary design through practical examples."

As his words fell, everyone in the conference room got up, ready to move their bodies, or go out to the toilet or something.

But when Summer was the first to open the door, the scene outside scared her into subconsciously taking two steps back, and she almost fell to the ground-

There was a large group of people at the door, roughly estimated to be twenty or thirty, and a few of them were very old, and they knew at a glance that they were teachers.

"It's ......"

The others in the room also noticed something strange outside.

At this time, a familiar figure of Chang Haonan quickly entered the conference room from outside.

It's Liu Hongbo.

"Xiao Liu? You guys...... What's going on out there? ”

Du Yishan was also a little confused about the situation for a while.

"Uh...... Teacher Du, that's right. ”

Liu Hongbo raised his arm to wipe the sweat on his forehead, and then explained:

"I heard from Senior Brother Fang Zhen yesterday that there will be a small lecture on computer simulation in the second half of your group meeting today, so I thought about bringing a few students over to listen to it together. As a result, while waiting outside, I ran into a few other teachers, and when they found out about this, they all went back and called a few of their own students, and that's it...... Spread the word. ”

At this time, another teacher outside the door also poked his head in:

"Academician Du, we ......"

But he stopped in the middle of speaking, because it was obvious that the small classroom in front of him could not accommodate a large group of people outside.

But if you say that you just go back like this, it is still a little unwilling.

After all, it is the person found by Academician Du, and the level will not be bad.

"Forget it, Xiao Liu, you go and contact the dean, and say that I will organize a temporary meeting of several research groups of the Department of Aircraft to borrow the newly built multimedia classroom."

Du Yishan didn't mean to hide his secrets, but the current scale has indeed far exceeded his initial expectations.

……

After about twenty minutes, the group moved to a multimedia classroom in a nearby building.

Mainly because there is an LCD projector that was not very common in 1996, the kind that can be connected directly to a computer.

And the mighty crowd attracted more teachers along the way.

Among them, even Tang Lintian, the dean of the School of Aeronautical Science and Engineering, did not go back directly after handing over the key in person, but found a place to sit down with him.

In short, when Chang Haonan sat on the podium with his laptop, the classroom in front of him, which could accommodate almost two hundred people, was already full.

When he promised Du Yishan to give a demonstration the afternoon before yesterday, his mentality was still "It's just a group meeting, what scene haven't I seen?" ”。

But now......

I've never seen this before.

Although he had taken a lot of interns before he was reborn, he really had never lectured on such a large occasion, and there were still a considerable number of professors in the academy.

So to say that you are not nervous at all is definitely false.

But Chang Haonan also knows that this kind of occasion will have to be faced sooner or later in the future.

And the level will be higher.

So exercise ahead of time, there's nothing wrong with it.

Thinking of this, his heart calmed down a lot.

Du Yishan, who was standing next to the podium, noticed Chang Haonan's nervousness at the beginning.

But as soon as he thought about going up to appease a few words, he found that the latter had already adjusted himself, so he just sighed in his heart, and then picked up the microphone next to him.

"All of you who are here to sit down as soon as possible, and the second half of our meeting will start immediately."

The academician spoke, and the effect was naturally immediate, and the whispering sound below just now quickly disappeared.

It's just that most people still look at Chang Haonan with curiosity or suspicion in their eyes.

Although most people guessed before they came that it could not be Du Yishan himself giving the lecture, the general estimate was that he invited experts from outside.

And Chang Haonan's physiognomy ......

It's so young.

He looked even younger than most of the graduate students in the room.

"Good afternoon, teachers, brothers and sisters, according to Mr. Du's arrangement, I will briefly share with you some knowledge of computational fluid dynamics, as well as its application in solving engineering problems."

This first sentence obviously confirmed his status as a student, and since everyone is called senior brother and sister, it must not be a senior graduate student.

Tang Lintian, who had just opened the notebook, frowned slightly for a moment, and then showed a dumb smile.

Du Yishan definitely wouldn't joke casually, so he judged that there were some deviations in the process of word of mouth.

"It should just be a report on the progress of learning, and it has been falsely rumored to be a lecture ......"

Thinking of this, Tang Lintian closed the notebook in front of him again.

Of course, the academician's face still has to be given, so he didn't quit halfway, and was still ready to listen carefully.

"Before I talk about practical application, I have to talk about some basic theories......"

Contrary to most people's expectations, Chang Haonan did not directly start to demonstrate the modeling and calculation process on the computer, but picked up a piece of chalk and walked to the blackboard.