Of course Xu Mang knew what these people were doing, he just wanted to see the strength of these people, and after a glance, let alone ... It's really not good, it's full of dense rows of equations, and it ends up empty.

Seem... It doesn't count anymore.

"You don't understand..."

"This is a problem with relativistic cosmology. Tong Min smiled and said, "Did you help me sprinkle a handful of cumin?"

"That's a must!"

"The soul of barbecue is cumin and chilled fat boy happy water. Xu Mang smiled and said, "Wait a minute... Help you get a few bottles of Fat Boy Happy Water, and the two ladies need sugary happy water or sugar-free happy water?"

“...”

“...”

This guy... It's humorous, and it's full of likability.

"Coke Zero!"

"I want it too!"

The two returnee girls said with a smile at Xu Mang.

But...

This aroused a trace of vigilance in Yang Xiaoman, my mother, I sat on the side, this big idiot is actually courteous to others, what does it mean?

"Ahem!"

"It's so hot... The mouth is a little thirsty. Yang Xiaoman coughed lightly, and said to Xu Mang, intentionally or unintentionally: "I want to drink Coke Zero... I don't know if anyone would like to help me get it. ”

Xu Mang walked to Xiaoman's side, glanced at Yang Xiaoman with a hint of expectation, and said angrily: "The cold box is placed next to you, just bend over and don't want to take it, you tell me about yourself... Lazy or not?"

Yang Xiaoman: @#¥%...!

I...

Oops,

I'm angry!

However, Xu Mang's mouth is unforgiving, but his body is very honest, he picked a bottle of Coke that is not very cold among many cold drinks, handed it to Yang Xiaoman's hand, and said seriously: "Drink a little less cold, it will accumulate into illness in the future, and it will not kill you when the time comes." ”

Yang Xiaoman was angry and warm, glanced at him viciously, and then opened the bottle cap with a happy face, not to mention... The temperature is just right, this is the temperature of love.

"It's coming, it's coming!"

"Chilled Coke is here!" Xu Mang ran to the side of the four international students with a smile and began to distribute things seriously.

"Thank you!"

"Thank you so much. ”

“...”

The four of them thanked each other, especially the two girls, who had a good impression of Xu Mang, and sometimes they felt this thing... Maybe it's like Xu Mang and Yang Xiaoman, because of the gravy in the bun, the two walked together, and they had to sleep with them every night.

Although Xu Mang was wearing a hat and a pair of polarizers at this time, he could vaguely feel handsome from the silhouette.

"Huh?"

"Your name... What's the name?" asked Liu Yan.

"Me?"

"You call me Xiao Xu. Xu Mang smiled and said, "By the way, can you show me your calculation process? I am an astronomy enthusiast, so I chose the physics department, majoring in theoretical physics. ”

“？？？”

“？？？”

“？？？”

I can't see it!

This guy turned out to be engaged in physics, or theoretical physics!

Wait a minute

Isn't that just right?

"Xiao Xu?"

"I didn't think you still studied theoretical physics, so you should know the theory of relativity very well?" asked Tong Min.

"It's okay. ”

"Let me take a look first?" Xu Mang was really curious about the content of their calculations, if these four people couldn't calculate well, they would not be able to solve the problem of oxygen fugitivity in the extraterrestrial, the problem of oxygen fugitiveness in the alien body requires a lot of comparative calculations, and the intensity is very high.

"Give!"

That Liu Yan generously handed over all the manuscripts to Xu Mang, but Lu Bo was a little dissatisfied with this, such an important thing, he gave it, no matter how he said it, it was his own intellectual achievement, which... It's child's play.

However, he wanted to refuse, it was already too late, and Xu Mang was reading their calculations.

Initially

Thinking that it was just a calculation problem, it turned out that not only did the calculation go wrong, but the whole direction of thinking also went wrong, so they used the wrong formula for calculating the functional relationship between the ability, momentum, and time of the expanding universe that they needed to solve!

Xu Mang returned the manuscript to them in disappointment, and said indifferently: "You... Got the formula wrong. ”

"This problem requires the Robertson-Walker scale to describe space-time. Xu Mang said helplessly: "Get the non-zero component from the formula, and then use the short-range line equation to calculate, and finally get the thinking momentum and the basic momentum, including energy." ”

Words fall,

Several people present looked at Xu Mang in disbelief with surprise on their faces.

"You..."

"You analyzed it so quickly?" Tong Min asked in horror, "just... Just a look at our calculations?"

"That's right!"

"Actually, it's a simple question. Xu Mang said with a smile: "After all, I studied theoretical physics, and the theory of relativity and quantum mechanics are my majors, and it is not difficult to get results." ”

"Give!"

Xu Mang handed over the manuscript to the girl, Liu Yan.

Wrong!

This is not the case!

This theory of relativity is actually not the same as relativistic cosmology, if this guy is purely engaged in theoretical physics, it is impossible to come into contact with such esoteric problems, including the Robertson-Walker gauge, which... How did he know?

Looking at the back of Xu Mang's departure, the two international students in astrophysics had a confused look, and the two felt that they had seen a monster.

"He..."

"It's different!"

"It's not like an ordinary college student. Liu Yan said seriously: "Analyzing the cause of the problem in such a short period of time is definitely not something that ordinary students can do, have you ever seen such a person?"

Tong Min and Lu Bo shook their heads.

"Forget it..."

"Maybe it's luck. Tong Min smiled bitterly: "So... The second question that the professor gave us was to assume that the early universe consisted of non-interacting particles and gases of zero mass, which were only subject to gravity..."

At this point,

Xu Mang walked to Xiao Man's side with a disappointed face, and sat silently on the chair without saying a word.

"Huh?"

"What's wrong?" Yang Xiaoman asked with concern: "I was still elated, but all of a sudden... It's wilting?"

"Ugh..."

"I originally wanted these four people to help me solve the problem of extra-system oxygen escape, but these people's abilities are not good. Xu Mang said helplessly: "Computing ability is urgent, and there are also problems with professional ability, of course... Limited to those two boys. ”

"Those two girls don't count?" Yang Xiaoman glanced at him and hurriedly said, "I want to eat corn... Spread a little hoisin sauce on top. ”

"Oh..."

Xu Mang obediently ran to the barbecue stove and roasted corn for the queen.

At this point,

The four of them are solving the temperature-dependent time of the hypothetical universe about thermal equilibrium, and the professors of Tong Min and Lu Bo need to ask the two to calculate the dependency.

Confused...

Completely confused!

Fortunately, the four of them successfully found out that at time t, the photonic gas is in thermal equilibrium, and according to Planck's blackbody radiation theory, the frequency in the volume V(t) is between v and v+dv.

But...

Because the frequency will move, the volume will expand, and how to calculate this process is basically difficult for the four people present.

"It's over..."

"It's a complete confusion. Tong Min said helplessly: "I found out that this professor is deliberately manipulating us... This is a very acute question. ”

"I think so too..."

"That's a lot of calculations, and to tell you the truth... I'm a graduate student in the Department of Mathematics, and I actually... It can't even be calculated. Liu Yan smiled bitterly: "Alas... I said you two, do you usually offend the professor, and I guess it will embarrass you?"

"Don't talk nonsense!"

"We're usually very honest, I think... It's this bastard professor who deliberately makes it bad, I say... Why did you call the two of us to the office separately at that time, and that's why!" Tong Min said angrily: "This is deliberately not allowing us to graduate!"

"Impossible, right?"

"People... If you have no grievances and no enmity, why don't you two graduate?" Zhao Pengpeng asked.

Then

Lu Bo, who had been silent, said: "Because... The professor discriminated against Chinese people. ”

Words fall,

The two girls stopped talking, there is a lot of discrimination in the United States, especially in the field of higher education, many professors of prestigious universities discriminate against Chinese students and Asian American students, and many, many schools would rather admit white and black people than Asian Americans, especially from China.

Therefore, Chinese students who want to be admitted to Ivy League schools basically have to surpass everyone in their grades.

But that's all,

He often doesn't recruit professors.

"Ugh..."

"Actually, I regret studying abroad. Liu Yan said helplessly: "I knew earlier... I stayed in China, but unfortunately my parents didn't agree and must let me go abroad, and I wondered... Is it so important to go abroad?"

"I remember... Professor Xu has never studied abroad, and he has not yet become a world-class scientist, although..."Liu Yan thought that her professor was so angry that Xu Mang stomped his feet at that time, and showed a helpless and funny expression: "Although it is notorious, it is really powerful!"

XU Mang,

Prof. Xu,

It is true that the reputation in the American academic community is not very good, and I heard that it specializes in trapping Europeans and Americans, but people have this strength.

"Huh?"

"Or... Looking for Xiao Xu to help?" Tong Min said, "Maybe Xiao Xu has this ability?"

“...”

“...”

“...”

Not to mention,

This is a real opportunity!

Although I don't know how that guy solved the first problem, his strength doesn't need to be explained.

"I'll go find him!"

Liu Yan has a good impression of Xu Mang, mainly because he is more careful and gentle to people, the most important thing... looks handsome, similar to a white cat who writes about the Internet, they are all handsome guys!

Words fall,

Liu Yan hurriedly got up, and under Yang Xiaoman's gaze, she ran to Xu Mang's side.

"Hello?"

"Handsome guy... Are you free?" asked Liu Yan.

"What's wrong?" Xu Mang was roasting corn and asked with a confused expression, "Do I have something to do with a handsome guy?"

"Uh..."

"Can you help us solve a few problems?" Liu Yan smiled, "It's those questions about relativistic cosmology." ”

"Oh..."

"Wait until I'm done roasting these corns. "Xu Mang's mind is all on corn now, just now... He vaguely sensed a hint of murderous aura, secretly glanced at Xiao Man, and found that her face was full of the word jealousy.

moment

Xu Mang handed the corn coated with hoisin sauce to Xiao Man's hand, then leaned over to her face and kissed her, and said gently, "I'll help a few young people answer questions." ”

"Hmm!"

"Go and come back. Yang Xiaoman said shyly.

But

On the other side, Liu Yan and Zhao Pengpeng are very sad, it's a pity that the famous grass has a master.

"Come on, come on!"

"Let me see if I'm having a problem. Xu Mang came to the four of them with a smile and asked curiously, "What about the problem?"

"Give!"

Liu Yan handed the tablet to Xu Mang.

moment

After getting this manuscript, Xu Mang read it carefully, and his brows gradually wrinkled together.

“...”

“...”

“...”

Looking at Xu Mang's expression, Tong Min and Lu Bo couldn't help but start to get nervous, this guy was their last hope... Don't say no!

......

(//)

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