In the No. 1 Middle School of Shanzhong County, the 1,000-person classroom in the auditorium was full.

In the audience, there were some officials and cadres from Shanzhong County, school principals and teachers, people who came to invite Gu Xiaobai's History Society, and a large number of historians who had dumped the Northwest Historical Conference and came here to listen to the lectures.

and a vast number of students.

Gu Xiaobai was sitting on the stage, talking about the course "Physics and Music" he had prepared.

At this time, the course had come to an end, and Gu Xiaobai spoke on the stage: "In 1942, Hopf published the paper "The Bifurcation of Differential Systems from Equilibrium Solution to Periodic Solution". In this paper, we study nonlinear vibrations from a more general perspective, and obtain the conditions for discriminating periodic solutions that are independent of the initial conditions, that is, the conditions for the transformation into stable periodic motion after the instability of the fixed point of the dynamical system. Later generations called it the Hopf fork, also known as the Andronov-Hopf fork, or the Poincaré-Andronov-Hopf fork. This bifurcation was developed not only in the theory of musical instruments, but later in the fields of chemistry, celestial mechanics, radio, etc......"

Speaking of this, Gu Xiaobai looked at the audience with a smile and said: "Okay, this is all I want to talk about, starting from Guan Zhong's record and summing up the 'three-point profit and loss method', until the first half of the last century, after nearly 3,000 years of development, the physical theory of music has finally been basically perfected." The reason why we can hear so much beautiful music is not only because there are countless musicians who have created beautiful music, but also because of the unremitting efforts of generations of scientists, and the reason why mankind has been able to continue to progress is because of the continuous pursuit of truth......"

Speaking of this, Gu Xiaobai raised his head and looked at the ceiling, as if remembering the achievements of his ancestors: "And now, acoustics and psychoacoustics are still developing, and there are still many unknown knowledge, waiting for us to discover and summarize, students, a bright future is waiting!"

Gu Xiaobai's eyes were shining, and he seemed to have seen a bright future where he had discovered many new laws and formulas.

What a blessing to be a physicist!

Happiness!

After thinking for a moment, he looked at the audience and asked, "Students, have you all learned what I said today?"

Audience: "No-learn-will!"

Gu Xiaobai: "......???"

What? Didn't learn? I've been talking for so long? You haven't learned?

He asked again, "What about ...... Do you remember?"

Audience: "Also-no-remember-stop!"

Gu Xiaobai: "..................!!!!!"

Gu Xiaobai wanted to hit someone, you didn't learn and remember, and you answered so justifiably!

Believe it or not, I'm going down and beating you!

"And what have you been doing down there for so long?"

The next person answered, "Look—you—ah!"

Gu Xiaobai felt that he was not good at being a teacher at all.

He sat on the stage with his mouth curled and wanted to cry aggrievedly.

Oops, oops, Mr. Xiaobai is not happy!

In the audience, a female historian with a big wave shouted: "Xiaobai, what a great story! I still want to hear it!"

"Yes, one more talk!"

"I haven't heard enough!"

"Keep going, keep going!"

There was a roar in the audience.

And then I still desperately applauded.

The big wave female historian covered her face and sighed: "Oh, I basically didn't understand a word, why didn't I finish listening to a word, and I still didn't feel like I had heard enough?"

Next to her, another young woman who looked like her student had starry eyes: "Our Xiaobai, even if you read pi, it's good!"

"Yes, Xiaobai, do you memorize pi......?

"The three-character scripture is also fine!"

"A thousand words!"

Gu Xiaobai: "......"

He raised his head, the king of the ceiling, and endured the tears in the corners of his eyes.

Don't cry!

Teenagers don't cry!

Offstage, Senior Brother Xiao Su didn't know whether to cry or laugh, it turned out that Xiaobai also had something he wasn't good at!

For example, he's not good at lecturing at all!

After all, it is difficult for Xiaobai to understand the way of thinking, learning speed, comprehension ability, and knowledge reserve of ordinary people.

He lectures too fast, explains too little, and isn't interesting enough.

Because he himself is too strong, he thinks that others are so strong.

At least...... Not too weak**.

But in fact, everyone is such a weak chicken!

Because I understand and think others do, this is called the "curse of knowledge".

In the future, when Gu Xiaobai really becomes a big professor, he has to work hard to overcome this shortcoming.

But...... It doesn't matter, there are many big scientists who are not good at teaching!

People can accept gifted students!

Senior Brother Xiao Su was thinking about whether to go on stage to comfort Xiaobai, when he heard someone in the audience: "For the rest of the time, it's better to sing a song!"

"Sing! Sing!"

Gu Xiaobai, who was holding back tears on stage, suddenly had his eyes lit up and sang?

Yes, it can be done that way!

"Hmm...... Since you don't understand, let's write a song for you!" Gu Xiaobai's eyes sparkled, "As long as you learn to sing this song, you will all learn it!"

Everyone in the audience looked dazed.

Writing songs?

Do you write songs on the spot?

"Wait a minute...... "Gu Xiaobai turned around and ran, and came back with his demon qin on his back after a while.

On the stage, he pulled the lectern to the side, took out the demon qin, stretched out his feet and kicked it, and with a bang, he had already put the demon qin up.

A few simple rhythmic patterns popped up, and several other people sat on their sidelines, holding their instruments.

"Bang dong bang, bang, bang bang ......"

The rhythmic rhythm spread throughout the hall.

"Rap?" Wang Haixia asked.

"Rap. Gu Xiaobai nodded his head.

"Yo, yo~"

"The Spring and Autumn Pipe is five tones, and the profit and loss are eighty-one,

The palace benefits the lower loss quotient, and then the benefit is the feather and then the loss of the horn,

With the horn sign feather palace business, the rhythm has seen the dawn since then. ”

"Come, everybody sing with me. ”

In the audience, everyone looked sluggish.

Want to sing?

Why did it suddenly become a teaching song?

Teacher Xiaobai, are you sure you want to teach us to sing?

"Come, let's sing together!"

Gu Xiaobai played drums with both hands, and everyone involuntarily shook their heads.

"Yo~yo~ Chek is noisy, pancakes and fruits are coming...... No, what a horned feather merchant ......"

Hey, don't say it, it's quite emotional to sing like this!

After listening to it twice, I can actually sing!

Magical!

"Yo yo yo~

Greek Pythagoras, all the blame for the arts and sciences,

The tension density is the same, the root fifth and the high eighth,

The length of the string is six to four to three, remember this and you are not afraid.

Everyone in the audience shook their heads: "Yo ~ yo ~ don't be afraid, don't be afraid!"

Who knows what I'm afraid of!

I'm not afraid of anything anyway!

Following Xiaobai, I sang and played the drums, and my waist circumference was three feet five!

"Yo~yo~

Zhu Zaiyu, the prince of the Ming Dynasty, is talented and erudite.

proficient in music, music, and dance, astronomy and physics,

Divide the two squares twelve times, divide the ratio into equal innovations,

This is the twelve equal temperament, and the modern piano depends on it. ”

The audience continued to shake their heads.

"Lala~Who knows what I'm singing, anyway, the piano depends on it!Lala~"