On a plane from Kyoto to Boston, America, Excellent sits by the window and admires the white clouds like marshmallows outside the window.

Clouds roll and unfold, and flowers bloom and fall!

This is Zhuoyue’s first time going abroad, and he is a little nervous and excited!

Sitting beside Zhuoyue was Xiao Han, and he asked, "Zhuoyue, haven't you said goodbye to your girlfriend?"

"What girlfriend?" Zhuo Yue glanced at him and said, "We are just ordinary friends."

"Stop pretending." Xiao Han chuckled, "No one who is the training person knows about this!"

"Do you believe it or not?" Zhuo Yue said: "I told her a few days ago that I am leaving today."

"Then she didn't come to see you?"

"I didn't tell her when I'll leave today!"

"Okay, you're so awesome, your boyfriend is also amazing to be yours."

"I'm really not a boyfriend or girlfriend!" Zhuoyue said helplessly: "I don't know who spread the scandal to me. I just chatted with her when she went to the library and got together to stroll around the campus by chance."

Xiao Han looked at him with contempt. Is this just chatting and going around the campus?

I also saw you having dinner together!

When flying to Boston, you will land in New York first and then transfer to Boston.

In addition to the outstanding six people, there were Professor Xue and Professor Qian, who were the leaders of this trip.

After nearly twenty hours of long journey, they finally landed in Boston.

After leaving Boston Airport, a special person from MIT drove to pick them up.

MIT reserves a whole hotel near the school, and all participants live in it, two people in one room, each with a twin bedroom, with all kinds of supporting facilities in it.

The same room as Zhuoyue and Xiao Han!

"Xiao Han, let's go to MIT for a walk." As soon as I put my luggage in, Zhuoyue couldn't sit still.

"Let's rest first. After riding on the plane for so long, I'm almost exhausted." Xiao Han spread his arms, into a large shape, put his butt at the end of the bed, and his upper body was lying on the bed with his eyes closed.

Zhuoyue looked at the hanging table on the wall. It is now at 3:00 pm Pacific time.

"Then let's take a few hours off first and wait until the evening before going around!"

After saying that, Zhuoyue also climbed onto the bed and slept for a while.

In the evening, after dinner, the six people from Zhuoyue made an appointment to visit MIT.

According to the QS world university rankings, the top seven physics universities in the world are from the United States.

The strongest one is MIT, known as the most beautiful name of the world's science and technology universities. It is the highest academic hall that all science and engineering students dream of. Physics is one of the school's ace majors and ranks first in the world.

MIT, referred to as mit.

The biggest difference between the American and Huaxia University from the outside is that American universities have no walls.

MIT is built on the Charles River and is located in the heart of Cambridge, the city center of Boston metropolitan area.

MIT is very prosperous at night, with traffic on the streets, tall buildings standing on the roadside, dazzling neon lights hanging everywhere.

You can see people of all skin colors, many people walking on the sidewalk, and people skateboarding.

There are many people sitting down or chatting, reading books, or playing musical instruments on the benches on the side of the road.

The central building of MIT is a dome, similar to the White House-like building. The rest are built on both sides of it, with buildings full of cartoon styles and different colors.

Some buildings are like the pronunciation parts of the saxophone of musical instruments, some are like several squares of irregularly built up, and some are like watchtowers by the sea.

When I walked to the grass, I saw students sitting together in academic conversations, students controlling small robots, students holding notebooks and recording, and students doing some other experiments.

People around you are accustomed to this, they seem to be used to it!

"It's worthy of being Massachusetts!" Xiao Han sighed: "The academic atmosphere is unmatched in China."

"You can definitely get into the exam with your ability." Zhuoyue raised his eyebrows and looked at him and smiled: "Are you not considering applying next year?"

"I haven't considered it before." Xiao Han smiled and said, "But now I want to try to apply."

"Where are you?" Zhuoyue asked at the other four people.

"I'll come too!" Chen Shi said.

"So too!" said Lu Feng, Qiu Guang and Chen Shi.

"I'll do it!" Ji Zhong is not a person who is good at speaking, and his words are simple and shocked.

"Maybe some of us will be selected by Massachusetts soon!" Zhuoyue joked.

"Haha..." Apart from Ji Zhong, the others laughed.

But they all know that excellence is a joke.

Not long after, the global theoretical physics competition held by MIT will only be admitted to MIT in advance if it wins the top three.

But the people participating in the competition are the top undergraduate physics professionals in countries around the world. How easy is it to get to the top three?

At that time, at least more than 700 people will come to participate in the competition. Three of the world's top 700 talents will be selected. They will not dream that they are those three.

Ji Zhong's eyes were full of desire. He wanted to be one of the three to prove his genius wisdom and physical talent.

They walked into the main hall and saw many people rushing, while others were sitting in chairs typing with computers or reading books.

I also saw a professor attending classes in the classroom!

"Come on!" Zhuoyue, who had just left, came out from somewhere, waved to Chen Shi and others, and said, "There is a group of people here discussing physical issues, let's go and have a look."

"That's not good!" Chen Shi said embarrassedly: "We are not students from their school, and it's rude to suddenly join them."

"You are so stupid." Zhuoyue pulled him forward, and the rest followed, saying, "How could they know that we are not from this school?"

Soon they entered a classroom where three professors stood on the podium arguing, and more than a dozen students were watching.

They are both good at English and can understand what they say.

A middle-aged white professor with a slightly fat belly and bald head said, "Danny, this shouldn't be the case."

"The body derivative should be defined as an operator, and this equation should be added."

As he said that, he picked up the chalk and wrote down an equation on the blackboard.

【d/dt=?/?t(v.?)】

Zhuoyue said, "Moving?"

This is a flow equation. The first term on the right is the ordinary Eulerian countdown, and the second term represents the changes caused by the movement of the fluid.

The professor continues to write!

【The integral form of the conservation law of l on a control volume is:

d/dt∫Ω(ldΩ)=0

...

For quantities that are not secrets, d/dt gives the correct co-active time derivative.]

"If you use this equation, which equation can you use to close it?" Danny's right hand fingers were clamped with chalk like a cigarette, placed his left arm parallel to his chest, his right arm was placed on his left hand, and his right hand supported his chin.

"The law of state!" Zhuo Yue couldn't help but say.

"Yes, it's the law of state." Fermi said.

"Huh?" After saying that, he looked behind him in confusion, "Who said?"

The students surrounding him automatically dispersed, revealing Zhuoyue's figure. Chen Shi and Xiao Han stood on his left and right sides and were anxious, while Ji Zhong and others were silently far away from Zhuoyue.

"Professor, we didn't mean it." Chen Shi pulled Zhuoyue and said, "We'll leave now, don't bother you, please continue."

As he said that, he was ready to pull Zhuoyue away.

"Stop!" Fermi shouted, taking two steps at the front of Zhuoyue, with his big eyes wide open and staring at Zhuoyue. The distance was very close, and his belly was pressed against Zhuoyue's abdomen.

Fermi pointed to the blackboard and said, "Can you understand what we are writing?"

"Know, the following derivatives in the basic assumptions of n-s equations."

Fermi felt that the two were standing too close, so he took a step back, and Zhuoyue breathed in his heart. The professor's aura was very strong and put a lot of pressure on him.

"What do you think of me?"

"very good!"

"How is it a good way?"

"Because Ω is co-activating and it changes over time, we cannot simply exchange the time derivative and integral, because this expression holds for all Ω, so we can simplify it, that is, the second equation you wrote."

"For quantities that are not density, d/dt gives the correct co-dynamic time derivative."

"What happens when the equation closes?"

"Using the closure of the law state, we can find a set of conservation laws."

Fermi asked with a smile on his face, "What's your name?"
To be continued...