Chen Ya smiled and said:
"Old Yang, I think you think I'm a god. I've never read a book on higher education, and I've never applied for a job in the workplace. How would I know which major is good and which one has a promising future?"
Yang Changshuo pointed at him and said:
"Look, this cunning guy is still hiding something. He's a bad guy."
Chen Ya smiled but said nothing.
Yang Changshuo smiled and said to Mei Han:
"Little girl, beg him and ask him to tell you what to choose. This guy has a head of steel and an arm of steel, but he can't stop a woman from begging him. Your begging will definitely work."
Mei Han listened carefully and nodded, then turned to look at Chen Ya, but was a little hesitant.
If it is true as he said, that he has not even finished junior high school, then what is the point of asking him?
Mei Han looked at the boy who was not much younger than her and didn't know how to open her mouth for a moment.
Chen Ya seemed to see her embarrassment, smiled, stroked the dial of the watch in his hand, and said:
"Let me give you two questions first to see how good your basic skills are. How about that?"
Hearing that he could do the questions, Mei Han became serious and nodded.
Fang Bai blinked.
The level of questions a person sets can also reflect his own academic level.
She was a little curious about what kind of question the famous Bai Yujing would come up with.
When Xia Zhijian heard that there were going to be physics questions, he knew that it had nothing to do with him and looked a little worried.
Yang Changshuo lowered his eyebrows and eyes, and it was impossible to tell what he was thinking.
Chen Ya lay comfortably on the sofa and said:
"Let's assume the sun is about to experience a helium flash and will soon be destroyed. The solar system will become uninhabitable for humans. Now humans must immediately start to save themselves..."
As soon as the first sentence came out, the expressions on everyone's faces became interesting.
Especially Xia Zhijian, who was originally planning to escape, immediately became alert.
"Humanity's self-rescue plan is called 'Wandering Earth'. It involves installing an engine on the Earth's surface to propel it out of the solar system and toward Proxima Centauri, 4.22 light-years from the Sun."
"If you were the person in charge of the 'Wandering Earth' project, please come up with a plan."
When Mei Han first heard the question, her expression was very strange.
But she endured it. After all, some physics competition questions also have strange backgrounds.
Only after she heard the entire question did her face become completely stiff.
Fang Bo said, "Mr. Bai Yujing, is this question really a physics question?"
She felt that by asking this kind of question, Bai Yujing was trying to be difficult.
"This is a physics problem," Chen Ya said with a smile. "You can use your phone to search for known physical quantities, such as the mass of the Earth and its distance from the Sun. But for quantities like the third cosmic velocity that need to be calculated, you'll need to do the math by hand."
Fang Bai raised his eyebrows.
He was actually serious.
A helium flash is a brief instance of nuclear fusion thermal runaway. As hydrogen is depleted inside a star, the remaining helium is compressed into degenerate matter, a substance whose volume does not increase with increasing temperature until the thermal pressure becomes so high that it exceeds the degeneracy pressure, triggering helium fusion.
Helium fusion occurs inside the core of the star, which will dramatically increase the core temperature. This will produce a very strong helium fusion flash, which will release energy equivalent to the total energy released by the entire Milky Way at the same time within a few minutes.
After a helium flash occurs, the Earth's surface will no longer be suitable for human habitation.
The idea of using an "engine" to propel Earth through space is even more absurd. What level of energy would be needed to propel Earth to escape velocity? And how many years would it take to reach Proxima Centauri?
This is just the general background of the topic Bai Yujing mentioned.
Just describing this background would require the entirety of a high school physics education. Bai Yujing's entire problem was far more challenging than this.
Mei Han stood there in a daze for a minute.
Because this topic is too imaginative and too grand, I just want to briefly think about it.
A minute later, she suddenly realized that this question was not nonsensical.
The implicit condition of the "Wandering Earth" plan is to preserve as much human fire as possible and to "drive" the planet to its destination as quickly as possible.
And the basic physical quantities that Bai Yujing told her to search for just now were actually also a hint, such as the equatorial circumference, the third cosmic velocity and other data.
She gradually had an idea of how to make a plan.
Yang Changshuo silently took a thick stack of white paper from his desk and placed it in front of Mei Han along with a pen.
Mei Han said nothing and began to calculate on a piece of white paper.
Chen Ya looked at his Patek Philippe watch with a Galaxy icon on the dial, and the hour hand had just passed two marks.
Xia Zhijian finally couldn't help but ask, "Mr. Bai Yujing, according to what you said, if we drive the Earth away like a car, what will happen to the people on Earth?"
Chen Ya said: "Dig a dungeon underground, and all human beings will move underground to survive."
Xia Zhijian was stunned and said, "Doesn't that mean the entire country, society, and even the international community are in chaos?"
Chen Ya said, "Yes, this is actually a test of ethics, international politics, and social order. Perhaps you can also try to develop a plan to maintain a relatively stable order."
Xia Zhijian said in despair, "Mr. Bai Yujing, you are making things too difficult for me."
After saying this, he couldn't help but think in his mind about what kind of structure should be adopted to maintain order in human society when the end of the world comes.
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