After a while, Ah Qing came out of Pang Xuelin's arms, and her pink face was flushed.

Pang Xuelin couldn't help pinching her face and said with a smile: "A-Qing, how will the report from Princeton feel?" ”

A Qing said: "It's okay, it's just a little boring, when I participated in the drinking party, the men who accosted me were annoyed." Professor Deligne also asked me if I would like to go to Princeton, so I am not so stupid, and now we at Tsinghua Institute for Advanced Study are no less than their Institute for Advanced Study in Princeton. ”

Pang Xuelin smiled, although in terms of substance, the Princeton Institute for Advanced Study is much deeper than the Tsinghua Institute for Advanced Study.

However, in recent years, with the research of graphene and carbon nanotubes and the neutrino oscillation discovered by the Daya Bay Laboratory, Tsinghua has produced several Nobel Prize-level achievements.

In addition, Pang Xuelin has successfully predicted and set up an experimental team to observe the quantum spin Hall effect in two-dimensional topological insulators and the quantum anomalous Hall effect in magnetically doped topological insulators.

These two results are not much worse than the previous ones.

Some people in the scientific community have predicted that Pang Xuelin is likely to win the Nobel Prize in Physics again after winning the Nobel Prize in Chemistry, becoming the only double Nobel Prize winner in science in history. (Historically, the Nobel Prize winner is Pauling, who has won the Nobel Prize in Chemistry and the Nobel Peace Prize respectively.)

And because of the existence of Ponzi geometry, Tsinghua Institute for Advanced Study is already a mathematical center in the world that can compete with the Institute for Advanced Study in Princeton, and the Ponzi school of geometry is famous all over the world.

Pang Xuelin said with a smile: "My A-Qing is the most powerful, and even the Princeton Institute for Advanced Study can't look down on it." By the way, if you come back to Tsinghua University this time, you should be able to directly give an associate professor and doctoral supervisor, and you need the school to arrange a teacher's apartment for you, right? ”

Ah Qing blinked, looked at Pang Xuelin with tears in his eyes, and said, "Brother, do you want to kick me out again?" ”

Immediately, Ah Qingyou turned his gaze to Wang Muhui and said, "Sister Xiaohui, my brother wants to drive me away." ”

"Alright, alright!" Wang Muhui glared at Pang Xuelin with disgust, and said, "A-Qing, this is your home, you can live as long as you want, don't bother with your brother." ”

"Long live Sister Xiaohui! Sister Xiaohui, what do we eat at night? I'll help you cook together. ”

Ah Qing went up and hugged Wang Muhui's face and took a sip, and said affectionately.

Pang Xuelin shook his head, for Ah Qing's thoughts, whether it was him or Wang Muhui, they could vaguely feel it, but no one made it clear.

He had wanted to transfer Ah Qing to other places several times, but every time Ah Qing pretended to be pitiful in front of him and Wang Muhui, there was nothing he could do.

Dinner was hearty with braised prawns, cola chicken wings, steamed sea bass, scrambled eggs with leeks, and an egg soup.

A family of three sat around the table, eating and chatting.

But Pang Xuelin never expected that the civilization level test that he had been thinking about suddenly began at this moment.

"Host, please note that the Carbon-Based Life Alliance Blue 84210 ship is testing Earth, and the detection beam is about to reach its target."

The voice of the system suddenly sounded in Pang Xuelin's mind.

Pang Xuelin's movements froze suddenly, and in the next second, Pang Xuelin found that not only himself, but even Wang Muhui and Su Anqing beside him had stopped.

Su Anqing was holding a piece of chicken wings and sending it to his mouth, and a drop of sauce dripped from the chicken wings and solidified in mid-air.

In front of Wang Muhui, the white mist that had risen from the cup of hot water she had just soaked also froze.

Immediately afterwards, Pang Xuelin found that his perspective was slowly rising.

He looked down, his body still sitting at the dining table, but there was a transparent self floating out of his body.

As soon as Pang Xuelin turned his head, he saw that the transparent bodies of Su Anqing and Wang Muhui also floated out.

It's like going out of your body.

"System, what's going on?"

"Don't panic, the host has been selected by the Carbon-Based Life Alliance to participate in the civilization level test as a representative of the Earth's civilization. What comes out of your body is just a digital copy of you. ”

"it!"

Pang Xuelin was speechless.

After tens of thousands of years of war, the Carbon-Based Life Alliance and the Silicon-Based Life Alliance were defeated and driven to the edge of the galaxy.

The Carbon-Based Life Alliance decided to build a 10,000-light-year isolation zone in the Milky Way, destroying hundreds of millions of stars and building an interstellar Great Wall of 10,000 light-years. It is used to stop the Silicon-Based Life Alliance from using stellar frog jumping to launch a counterattack against the Carbon-Based Life Alliance.

In order to prevent accidental damage to civilizations above level 3C in the isolation zone, the Carbon-Based Life Alliance will conduct civilization level tests on the star systems with life.

In China, the group of children from the rural elementary school were selected to participate in the civilization level test, and finally succeeded in surviving the destruction of human civilization because the teacher made them memorize Newton's three laws on his deathbed.

Unable to determine the target he was chosen, Pang Xuelin has been working hard to improve the education level of primary schools in poor areas across the country in recent years to cope with the possible crisis.

But he didn't expect that after so much preparation, he was finally selected.

"Is this a cheat for the system?"

Pang Xuelin couldn't laugh or cry.

The test questions are not very difficult, and under normal circumstances, middle school students can answer them.

The only thing that makes Pang Xuelin a little strange is that, according to the scene in it, the selected digital replica has the complete memory of the ontology and does not have autonomous consciousness.

But now, after being chosen, he is in a state of sobriety.

Is this a benefit given to you by the system?

In China, the Carbon-Based Life Alliance is a super civilization that has mastered technologies such as stellar frog jumping and four-dimensional communication, and it would be a pity that such an opportunity to finally get in touch with a higher civilization was let go so easily.

What happens next if you try to communicate with the Carbon-Based Life Alliance while testing?

Pang Xuelin's eyes narrowed slightly.

In fact, in the past few worlds, there has always been a question in his mind.

"Three-Body Problem", "The Martian", "The Wandering Earth", "Country Teacher", ...... Whether these worlds are real or simulated by the system.

What kind of existence is a system?

These doubts have been in Pang Xuelin's mind for many years, but there has been no clear answer.

"By the way, system, can I communicate with the Carbon-Based Life Alliance during the test?"

Pang Xuelin said silently in his heart.

"The system will not interfere with any action of the host in the dimensional world."

Pang Xuelin couldn't help laughing.

What does the system mean, is that the default?

……

At this time, Pang Xuelin's perspective had drifted from the villa to the sky above the city, and the brightly lit city gradually became smaller in his eyes, and slowly, the outline of the Asian continent began to appear in his eyes.

As Pang Xuelin's perspective continued to rise, a picture of the earth soon appeared.

In the next second, Pang Xuelin felt that the space around him suddenly became distorted.

He, Wang Muhui, and Ah Qing seemed to have entered some kind of strange cavity, and the sunlight shone in and became colorful.

But this process only lasted a few seconds, and Pang Xuelin was blinded by an incomparably dazzling light.

When he opened his eyes again, Pang Xuelin found that he, Ah Qing, and Wang Muhui, were suspended in an endless space, which presented an endless nothingness.

Ah Qing and Wang Muhui seemed to be in a state of ignorance, and they couldn't help but want to get closer to Pang Xuelin.

But they were all in the void, without any point of focus, and it was useless for them to move for a while.

Perhaps the Carbon-Based Life Alliance's computer sensed this, and it thought that these life forms needed something familiar, so Pang Xuelin noticed that a pale blue sky appeared above them.

There is still sunshine and white clouds.

Then, the earth appeared under their feet, and they began to feel gravity.

But the earth presented an absolutely smooth mirror form, Pang Xuelin bent down, took off his shoes, and threw them out.

Soon, the shoe slid ahead of the curve on smooth ground in a straight motion at a constant speed.

And Pang Xuelin himself, because of the conservation of momentum, slid backwards at a slightly slower speed.

It's kind of interesting.

Pang Xuelin didn't expect that he would see Newton's first law in the real sense here.

At this time, an ethereal and melodious voice sounded in this digital universe.

"Start the Level 1 Civilization Test, Level 1 Civilization Test Question No. 1: Please describe the basic principles of biological evolution on your planet, is it a natural elimination type or a genetic mutation type?"

"Natural elimination."

Before Pang Xuelin could answer, Su Anqing and Wang Muhui actually answered as soon as possible.

"Test No. 1 passed. Level 1 Civilization Test Question No. 2: Please briefly describe the relationship between electricity and magnetism. ”

Pang Xuelin's eyes narrowed slightly, and he had the impression that the civilization test in China should be the 3C civilization test, and here, it directly became a first-level civilization test.

The first question is basically the same as the middle one, but from the second question onwards, there are differences again.

"The change in magnetic flux produces an induced electromotive force."

Pang Xuelin said loudly.

"Test question No. 2 passed. Level 1 Civilization Test Question No. 3: Please briefly describe the relationship between electric and magnetic fields and charge density and current density. ”

Pang Xuelin said: "In general, the electric field can be either the electric field of a free charge or the induced electric field excited by the changing magnetic field, and the induced electric field is a vortex field, and its electric displacement line is closed and does not contribute to the flux of the closed surface. The magnetic field can be excited by either a conduction current or a displacement current that changes the electric field, and their magnetic fields are all eddy fields, and the magnetic induction lines are closed lines that do not contribute to the flux of the closed surface. ”

"Test No. 3 passed. Congratulations, the first-level civilization test passed the ......"

Before the voice could finish speaking, Pang Xuelin suddenly said loudly: "Can I answer the second-level civilization test questions?" ”

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