Hearing Zhu Biao's question of a bit of youthful innocence, Zhu Yuan smiled and said patiently: "The temperature of the sun comes from the most efficient energy source in the universe that we can perceive, called nuclear energy, and the high temperature of one or two hundred million degrees in the core of the sun is actually very low compared to other stars." Oh, the stars, the stars we see when we look at the sky at night, each one is equivalent to a sun, but because they are so far away from us, they seem to be just a star. As for what the sun is dressed in, it is still within the range that we can perceive, and the sun is suspended in the void, so it doesn't matter what it wears. ”

This passage is too informative, not only the crown prince Zhu Biao, but even Li Shanchang, Yang Xian, Fu Xuan, Tao An, Qian Yongren, Deng Yu and other important civil and military ministers who followed the three of them felt that they had gained insight, and then they had all kinds of big doubts.

Zhu Biao first caught a doubt: "Yuan'er, why do you always say "we can perceive", is there still a lot of things we can't perceive? ”

Zhu Yuan raised his hand and made a false gesture: "Your Highness, what do you say I have in my hand?" ”

Zhu Biao smiled: "I know, I've seen your knowledge, this is air, well, it contains nitrogen, oxygen and carbon dioxide. ”

"Your Highness is right, but, this is actually only the most superficial," Zhu Yuan did not withdraw his hand, and continued to maintain a holding posture as he walked: "Outside the air, there are actually things that we can't perceive, such as, time, Your Highness, what do you think time is?" ”

Zhu Biao fell into thought.

Li Shanchang and the others, who were following behind Zhu Yuan, couldn't help but think.

Lao Zhu originally smiled and listened to the conversation between the two children, but when he saw the eldest son contemplating his eyebrows, he hesitated slightly, and interrupted: "Yuan'er, if it's too deep, don't talk to Biao'er." ”

This was discussed at the beginning.

Lao Zhu thinks that it is better not to impact his son's three views too much. Well...... Three views, world view, outlook on life, values, this is also the concept given by Zhu Yuan.

When Lao Zhu said this, Zhu Yuan nodded in agreement.

The group behind him couldn't help but feel a little regretful.

Time, this should be quite a mysterious thing, Li Shanchang thought that in many related matters involving Zhu Yuan, his lord always had a secretive attitude, and even wanted to be crooked, thinking that this was because His Majesty the Emperor didn't want them to know, so he would interrupt.

When Zhu Biao saw his father say this, he also took the initiative to skip it, but he didn't forget what happened just now: "Then, Yuan'er, let's talk about the sun, why can it be suspended in the void?" ”

"Strictly speaking, it's not levitation," Zhu said: "The sun, the earth, the moon, and so on are all in constant motion, for example, the earth revolves around the sun, the sun gives the earth a gravitational force, and the earth revolves around the sun, and a centrifugal force is generated, and the two form a balance." In the same way, the moon revolves around the earth, creating a kind of equilibrium. On a larger scale, the Sun also revolves around the center of the Milky Way, which also creates a kind of equilibrium. Oh, the Milky Way, the river that can be seen in the summer, is actually a galaxy composed of countless stars. ”

Zhu Biao was surprised again, and wanted to ask deeply, thinking that his father should be able to interrupt, so he turned back to the previous one: "You said that the high temperature of 10 or 20 million degrees in the sun comes from nuclear energy, why is this?" ”

"This," Zhu Yuan paused, and said in a joking tone: "The stakes are very high, and I will talk to His Highness in private." ”

For nuclear energy, even if it is said now, if it wants to be realized, it is already a matter of the year of the monkey. However, in any case, out of prudence, it is better not to say it.

Zhu Biao paused, his eyes were a little bright, but he was smart not to continue to ask.

Lao Zhu in the middle also raised his eyebrows slightly, and once again sighed a little, when he thought that he had already known enough things from his precious twenty-third grandson, he didn't expect that there would always be more.

Compared with his son's feelings, Lao Zhu realized that this "big stake" is really important.

Because, the twenty-third grandson of his own treasure has never been a person who cherishes himself, but is more inclined to widely spread all kinds of knowledge that Lao Zhu thinks should be kept secret.

I didn't expect to hear from him a kind of "very important" knowledge.

Li Shanchang and the others, who were silently following behind him, couldn't help but have a certain thought.

This...... I don't want them to know yet.

Passing by another exam room.

Lao Zhu walked slowly, walked into the crowd again in the slight commotion of the scholars, checked the progress of several students' answers, and when he left here, Zhu Biao continued the topic just now: "Yuan'er, the temperature of the sun, I just want to ...... Even if you know, according to you, what is the use of being able to quantify it? ”

"Your Highness, this question goes straight to the core again," Zhu Yuan said with a smile: "The temperature of the sun, involving the nuclear energy I just mentioned, will not be expanded for the time being." Your Royal Highness must first know one thing, if we want to get rid of the dynastic changes of the past dynasties and enter the industrial age from the agricultural era, it is a necessary way, and if we want to achieve the leap of the times, the use of energy is a fundamental. Energy, including fossil energy, bioenergy, wind energy, hydropower, geothermal energy, etc., among them, in addition to geothermal energy, some others, in the final analysis, can be traced back to the solar level, solar energy, in fact, is nuclear energy. ”

Zhu Biao realized that this was all a university question related to his family and country, and he couldn't help asking: "What is fossil energy and bioenergy...... Something like that? ”

"Fossil fuels, most typically, are coal. Why is it called fossil energy, because coal is formed by the ancient forest buried in the ground and transformed over millions of years, so it is called "fossil". Oh, this is a verb that has been turned to stone after millions of years of vicissitudes. Bioenergy, the simplest, the wood we use every day, they are not buried in the ground and turned into fossils, but directly the stem of the plant to burn, so it is called bioenergy. As for wind energy and water energy, I don't need to explain it, those waterwheels on the riverside, Your Highness has time, we can go and see them together. And then all these fossil fuels come from animals or plants, well...... This also involves the concept of a biological chain, wolves eat sheep, sheep eat grass, grass needs sunlight to grow, probably this is the case, of course, it is far from this, even writing one or two books is not enough, and this happens to be a knowledge that His Highness must know, this ...... Next, I'll write it out specifically. ”

Waiting for Zhu Biao to nod, Zhu Yuan turned to Lao Zhu: "Speaking of which, ancestor, Yuan'er mentioned the matter of compiling general textbooks before, and after this exam, I think it can be started, according to the three levels of primary school, middle school and university." ”

Lao Zhu also nodded, but said: "The stakes are very high, and you must consider it carefully." ”

Zhu Yuan gestured behind him: "Your lords should also participate, by the way, not only these liberal arts and sciences, ancestors, Yuan'er thinks, should also prepare a military academy, well, and it should be classified to the university level, the corresponding school specifications, this is also a problem that needs to be discussed, the university of higher education, there should also be a distinction, it is determined by rank, such as Jinling University, how many products does the ancestor think is good?" ”

Lao Zhu didn't answer immediately, pondered for a moment, and said, "This...... I'll go back and think about it. ”

"Also, the reform and reorganization of various ministries, after this scientific examination, we will have a group of quite abundant manpower, and the reform of the department can be launched."

When Zhu Yuan mentioned this, all the civil and military ministers behind him cheered up.

Li Shanchang's mood is particularly complicated.

mentioned setting up six parts before, and when he was pressed by his own father-in-law, he thought that it must be a yellow-haired child who was a hindrance.

Sure enough.

It's just that I inevitably have some very bad premonitions, and I don't know what my father-in-law will do next.

Just like before, there was obviously a Si Nong Division, and a Yingtian Division was created, and they were all positive three products, plus the Yinghai Division, and Tai Hospital...... How many departments are there in the third grade?

And then there is, a certain teenager's book from a product.

When he heard the news that day, Li Shanchang went home and threw all over the house.

It's a thorn.

Even, this is afraid that the ancestors are ready to replace themselves.

Li Shanchang could clearly feel that since the arrival of a certain teenager, his father-in-law was becoming more and more dissatisfied with him. It's just that he was replaced by a fourteen-year-old boy, and he was really unwilling.

Everyone walked and talked from south to north, and most of the time had passed.

Zhu Yuan had to take the initiative to mention it, and he couldn't walk anymore.

Lao Zhu half laughed and half complained with concern, or rested in a flower garden pavilion, and talked a little more, Lao Zhu took the ministers back to the palace, there are still many things to deal with every day, and they can't always stay here.

I didn't let Zhu Yuan send it.

When His Majesty the Emperor and his entourage left, it was time to hand in the papers.

When the gong sounded, the officials and soldiers in charge of the invigilation first instructed the candidates to get up and leave the examination room, and then collected the papers in an orderly manner, and bound them on the spot.

Later is an hour for lunch and a break.

However, whether it was the invigilator or the exam, there was not much rest, while sorting out the test papers and preparing for the afternoon exam, while having dinner, most of the people returned to their seats in the exam room, and some people inevitably began to contact each other more.

And so it was too late.

At one o'clock in the afternoon, the second exam began.

This time there were only three blank papers.

When the paper is handed out and the gong that can be graded is sounded a quarter of an hour in advance, the invigilator hangs the exam questions that were written temporarily at noon on a shelf, walks around the examination room, and recites them aloud three times as usual, and finally places them in front of the examination room.

For some scholars who have studied the scientific expeditions of the previous dynasties, this is a very special topic: there is a saying in the "Edict of the Central Plains", "expel the Hulu and restore China", and now the Hulu has been expelled, and the scholars are asked to give ten suggestions on how to "restore China" as the core, which can involve culture, education, etiquette, military, agriculture, water conservancy and other aspects.

There are two more requirements:

Article 1: Limited to 3,000 words.

Article 2: You can write freely with charcoal, pen, brush, etc., but the text needs to be punctuated.

Of course, this is another topic that Zhu Yuan and Lao Zhu discussed privately and finally formulated after several revisions.

Whether it is the question itself or the additional requirements, they all have different intentions, for example, the question specifically mentions many aspects that can be involved, and Zhu Yuan deliberately added "agriculture" and "water conservancy", which is to hope that candidates can open their minds and consider the "production" level of economic science, rather than being limited to the traditional "culture" and "etiquette".

Also, 3000 words of this.

Zhu Yuan didn't want to see the nonsense starting from the Three Emperors and Five Emperors, 3,000 words, ten suggestions, an average of 300 words each, and the candidates could only take dry goods.

Of course, those who can't change their habits, spend 2,900 words forcibly talking nonsense, and list ten in the last 100 words...... Well, this should also be talent, and it can't be missed.

Zhu Yuan discussed this with Lao Zhu.

Therefore, compared with mathematics, this question will largely determine the future prospects of the more than 10,000 candidates present. If someone is full of nonsense, it can only be treated as a waste.

In this era, the "waste people" who can write are of course very useful.

Then there are writing utensils, which is mainly to popularize charcoal and fountain pens, just like the mathematics in the morning, candidates can only use charcoal, which is also the same purpose, Zhu Yuan also did some detailed work for this.

The main thing is the posture of holding the pen, the hard pen and the soft pen are different, and if you want to ensure efficiency, the posture of holding the pen needs to be adjusted.

It turned out well.

In the morning exam, Zhu Yuan observed that the posture of the candidates holding the charcoal was basically the same as later, rather than the current state of carrying the brush.

The last punctuation, this one is more important.

In advance, it is already in common use in the "Fundamentals of Mathematics" and other related fields. Moreover, in this era, it is not without punctuation, as long as the candidates who have read the book, they can basically understand it.

There is a traditional saying that "if you don't know how to read a sentence, you can't understand it", which actually means that there is no disadvantage of punctuation.

You can't break sentences, and even if you are literate, you can't read.

Zhu Yuan also discussed this with Lao Zhu.

If you want to upgrade your industry and enter a new industrial era, you need a large number of talents, on the one hand, to strengthen education, on the other hand, to lower the threshold for reading.

How to reduce?

Privately, the simplification of kanji that has begun to be operated by the women of the inner house is one.

Again, it's this punctuation.

Combining the two, Zhu Yuan believes that if the original threshold for reading is "10", it can be directly reduced to the level of "3".

The afternoon exam is two hours and four hours.

In the morning, he accompanied Lao Zhu through the examination room, and Zhu Yuan was so tired that he couldn't do it. Seeing him like this, Tao An and Qian Yongren also persuaded him to go back to rest first, Zhu Yuan refused, the other two, Tao An is 59 years old, and Qian Yongren is nearly seventy years old.

In the end, he lasted until the end of the exam, and when he finished collecting the papers, he checked it himself, and it was not until the sunset had sunk into the horizon that Zhu Yuan left the university campus and returned to his home on the lake.

Of course it's not over.

With a total of more than 16,000 exam papers, mathematics only needs to be quantified, which is not bad. Another policy is that if it is small, it is related to the candidate's personal future, and if it is big, it is the future of the country, and there is no room for sloppiness, so the follow-up marking is also a big project.