In the Biyong Palace, everyone waited for Chu Zhenjun's answer.

They couldn't judge the truth of these words, but Chu Zhenjun listed the data with great certainty, and if they couldn't find any mistakes or omissions, they could only believe it.

"Where are the immortals?"

Chu Zhen said: "If the earth standing under our feet is regarded as a grain of sand, then the universe is the entire earth, and it is even bigger. There are billions of sandy soils, and if there are gods, there are countless places they can go. The changes of many stars in the universe have almost nothing to do with the earth! ”

Chu Zhen didn't say anything about gamma rays, it was too far away for them.

"Dare to ask Chu Zhenjun!" Yang Ye, the Qintian Supervisor, stood up, with a look of frenzy in his eyes: "The changes in the celestial phases that we can observe, such as the Calamity Star and the Broom Star, where do these falling star stones come from?" ”

Everyone looked at Chu Zhenjun together, waiting for his answer.

Fang Xiaoru couldn't help but glance at his teacher Song Lian.

His teacher highly respected the theory of heaven and man induction and qi chemistry put forward by Dong Zhongshu in the Han Dynasty, and had his own unique understanding, and put forward the theory of "the mother of qi", that is, the heart of heaven and earth.

But now, this Chu Zhenjun, who was personally crowned by His Majesty, said that the stars in the sky are all the sun, the stars are like gravel, and the earth under their feet is also gravel, and the way of heaven has nothing to do with people.

Celestial and human induction...... Almost all wrong!

"A meteor is just a huge rock, and of course some of it is ice, or whatever."

Chu Zhen smiled: "You can imagine that the universe is empty, but there will also be many floating stones, which float like flying flocculents, and when they float near the earth, they will be pulled by the mass of the earth and fall to the ground.

Why do meteors shine?

Because the speed of falling from the sky is so fast, like when you rub your hand on porcelain quickly, it will generate a lot of heat and burn the stone red. ”

"As for the changes in the heavenly phase and the disasters on the earth, they are completely different things, and there are only some slight connections, such as the tidal changes are related to the moon, and the solar and lunar eclipses will cause some mosquitoes, insects, birds, and finches to be restless."

Chu Zhen glanced at Zhu Yuanzhang and continued: "The earth under our feet is not fixed, but moves slowly, and once the earth is squeezed and collides, it will cause an earthquake.

As for the others, droughts, floods, locust plagues, volcanic eruptions, etc., it has nothing to do with the changes in the celestial phases, it is the weather changes on the earth, and other stars, such as the Cowherd and Vega, are hundreds of millions of miles away from us. The white star is very close. ”

The Biyong Hall is quiet and quiet.

Everyone imagined the space picture and thought it seemed to be true, but they couldn't confirm it, and they couldn't find a refutation for a while.

But it's true that a quick rub of the hand against the porcelain heats up.

Zhu Di quietly glanced at his father.

Chu Zhenjun's words, how can his father be the "Fengtian Carrying Emperor"?

No wonder Chu Zhenjun used Su Dongpo's words before, a millet in the sea, parasitic mayflies in heaven and earth, it turns out that the universe beyond the sky is so vast!

"I, not the Son of Heaven?"

Zhu Yuanzhang asked slowly.

Everyone's hearts trembled.

Since ancient times, starting from the Book of Zhou Tianzi, the emperor is the son of heaven and the co-lord of the world. ’。

And now, Chu Zhenjun denies the existence of "heaven and earth"!

And then it was concluded that the emperor was not the Son of Heaven!

Such a rebellious word, if he hadn't been Chu Zhenjun, he would have been pulled out and cut down a long time ago!

Chu Zhen said with a smile: "Your Majesty, you are the emperor of the Ming Dynasty and the Son of Heaven, but this heaven has nothing to do with the change of the heavenly phase, but is closer to the Taoist Heavenly Dao, the universe was born, the earth was formed, and China stretched for thousands of years, until the end of the Yuan Dynasty, only then did you come to unify the world!" ”

Chu Zhen left Zhu Yuanzhang with some sacred cloaks, expanding the concept of heaven, or in other words, only disconnecting the changes in heaven with the disasters on earth.

In fact, according to him, everyone is a son of heaven.

How could Zhu Yuanzhang not hear what he meant?

But he just smiled and let him continue.

"What's your problem? Just ask. ”

Chu Zhen even took out the matter of the Son of Heaven to exterminate the Ten Clans, what else did they dare not ask?

"May I ask Chu Zhenjun, why are there disasters such as droughts, floods, and locust plagues?"

Hu Weiyong, a scholar, stood up and asked after saluting respectfully.

Chu Zhen nodded and said, "This is a good question. Have you ever wondered why the grasslands in the north are dry and rainless, while the south is full of rain? ”

Everyone was thoughtful, and Zhu Di said two words: "At sea!" ”

"That's right, classmate Yan Wang answered very well."

Chu Zhen said with a smile: "The water transpires into gas, the gas condenses into clouds, and then turns into rain and falls, the sea is in the southeast of China, so it is difficult for the rain clouds blown by the wind to reach the north." The sea is vast, the weather is unpredictable, and it is normal for drought and floods to occur in a certain place in a certain year, and it is inevitable that the only way to do this is to provide disaster relief, store more food in good years, and build water conservancy.

As for locust plagues, it is the habit of locusts, who lay eggs and forage in flocks in response to the pecking of birds and finches. ”

These words were only a few words, but they were like clouds and fog, and everyone imagined the picture of rolling dark clouds coming from the sea and pouring rain.

"Taught!"

Hu Weiyong saluted again.

Chu Zhen stretched out his hand and motioned for him to sit down, and soon someone stood up and asked.

After a few questions in a row, someone finally stood up and asked, "Dare to ask Chu Zhenjun, what can you do after learning mathematics, physics and chemistry?" Can the country be ruled and the world leveled? Can you appease the people of Lebanon? Can self-cultivation make people wise? ”

Three questions in a row, the comer is not good.

Chu Zhen remembered him, it was the Fang Xiaoru who was said to have been punished by Zhu Di for the ten clans.

"Do you know about guano on the island?"

Chu Zhen asked these students rhetorically.

"This Chu Zhenjun's great merit is also! It is of great benefit to the country and the people! Fang Xiaoru bowed.

It can be seen that in the Guozi Prison, many Tai students still recognize the changes that Chu Zhen brought to the Ming Dynasty, although they are dissatisfied with Chu Zhen's desire to add mathematics, physics and chemistry to the imperial examination.

"Do you know how to locate yourself on the sea?"

Chu Zhen asked again, and at the same time asked the eunuch who came with Wangjianglou to bring something up.

Fang Xiaoru saw this thing and knew that it would be of great use, but he didn't know what it was.

There is guano on the sea, so it is good for the people to go to sea, and no one dares to say why they go to sea.

But when the ship is on the sea, how do you determine where you are going?

The sea is vast, and it is impossible to find someone to ask.

Fang Xiaoru stood there, pondering for a long time before trying to say, "By looking at the Big Dipper? ”

"Just looking at the Big Dipper, you can't determine where you are, you have to measure the altitude angle."

Chu Zhen picked up the sextant and roughly explained how to use it.

But even if it is only a cursory explanation, the mathematical vocabulary involved in it still makes this group of students who have only learned a little arithmetic dizzy and don't know what they are listening to.

As for these nobles who led the troops to fight, Fu Youde, Tang He and others were even more like listening to heaven.

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Only a group of people from Qin Tianjian could hear it with their eyes shining, there was a lot of knowledge of the celestial phase they had learned!

After speaking.

Chu Zhen didn't ask them if they understood, put down the sextant, and said, "This is an application of mathematics at sea. As for what physics can do. ”

He asked for a piece of paper, folded it into a paper airplane, and after a sigh, threw it at the people in front of him.

A pair of eyes watched it fly through the sky, and finally landed on the face of a student, who was flattered and held in his hand.

Zhu Yuanzhang thought about it carefully and asked, "You mean, if you enlarge this thing, it can always fly in the sky and carry people?" ”

In the end, I have seen a lot of things in modern times.

Zhu Di also remembered a few days ago that his father took out something that shocked him and the eldest brother of the crown prince:

Drone.

It buzzed into the sky and overlooked the entire Forbidden City, flying nimbly under the control of its father, and levitating in front of them.

At that time, a group of eunuchs and palace maids, plus the brocade guards guarding the surroundings, were all shocked!

The father laughed, handed over the drone to the eldest brother and him, and asked him to learn how to use it quickly, and use it when he beat the king of Liang in Yunnan!

Now this delicate thing folded out by Chu Zhenjun origami is very similar to a drone!

"Why can something light float and something heavy can't? Why do you see stones and fish elsewhere in the clear water? Why is it that ten horses can pull a chariot, but one horse can't pull it? ”

Chu Zhen said: "If it seems simple and inconspicuous, and asks a question that makes people laugh, but it contains the truth of heaven and earth, I call it: science!" ”

In the face of many Confucian ministers and students in the Ming Dynasty, as well as nobles and princes, Chu Zhen said:

"Science is a different discipline from Confucianism, and it is useful!"

"What's the use?"

"It can make more powerful gunpowder and blow up a mountain; It can make fertilizer, so that the people of Daming will no longer worry about eating; It can make people look up at the starry sky above their heads and realize that everything in heaven and earth is far from being as simple as imagined. ”

"The legendary clairvoyance, the ears of the wind, can be easily realized in later generations, and people can travel across thousands of miles in one day!"

Chu Zhen didn't go any further, and the Ming people present were already surprised enough to hear it, although they didn't know if it was true.

Chu Zhen summed it up in one sentence:

"I hope that in the Ming Dynasty thirty years later, people will be able to take the train and sit from south to north at a cheap fare, and I hope that the territory of the Ming Dynasty will include the Western Regions, which is larger than the Great Yuan!"

Half a day.

Zhu Yuanzhang said: "I also want to see it!" ”

Chu Zhen smiled, "If you want the Ming Dynasty to be truly rich and strong, it is not enough to only learn Confucianism, you also need to learn mathematics, physics and chemistry." ”

He glanced at the crowd, and there was no opposition on their faces, but what they thought was unknown.

"A journey of a thousand miles begins with a single step."

Chu Zhen said: "I will leave you three questions, if anyone can answer them, I ask Your Majesty to reward you." ”

Zhu Yuanzhang asked: "Which three questions?" ”

Reward is not an issue.

Everyone also looked at it.

"The first."

Chu Zhen said: "According to the laws of the celestial bodies I said, explain the reasons for the occurrence of solar and lunar eclipses, it is better to have pictures and texts, if you can calculate the time of these two occurrences and the approximate scope of coverage, Your Majesty can reward you with gifts...... The premise is not to calculate according to the old method, but to redesign the new method based on the knowledge I said! ”

The people of Qin Tianjian can calculate the solar and lunar eclipses, and can calculate the exact time of the eclipse, the birth of light, and the reunion.

But they don't know the cause of the solar and lunar eclipses, but they only calculate them based on years of observation.

Zhu Yuanzhang said with a smile: "After listening to what you said, I figured out why there was a solar eclipse, and I also wrote an article explaining the solar and lunar eclipses!" ”

"Hahaha, yes!"

Chu Zhen laughed, and everyone looked sideways.

His Majesty personally participated?

"Second."

Chu Zhen smiled and continued: "As we all know, when we shout in the valley, we will hear layers of echoes, I don't know if you have ever thought about why the sound bounces? How fast does the sound bounce back, i.e., how fast does the sound of our daily speech be? ”

Calculate the speed of sound?

It doesn't sound like a difficult task, just find a place to shout and send someone to measure how far away.

Chu Zhen smiled: "You still need to write out how you do it, how to calculate it, and you have to have a detailed process." ”

"It's easy."

Prince Zhu Biao said with a smile.

"The next one won't be easy."

Chu Zhen said the third question: "I want to know the circumference of the earth under our feet, let me list some data for you, the straight-line distance from Nanjing to Suzhou is about four hundred miles." If you can't get through, you just need to give a way. ”

Calculate the circumference of the earth?

Yang Ye quickly calculated, because Chu Zhenjun had said before that the diameter of the earth was twenty-five thousand miles.

But unfortunately, it definitely can't be calculated with the data given by Chu Zhenjun!

"There's an additional question."

Chu Zhen said with a smile: "It is to calculate the speed of light, and according to the distance from the sun to the earth's 300 million miles, calculate how long it will take for the light emitted by the sun to reach the earth."

If anyone can figure it out, I strongly recommend him to Your Majesty as President of the Academy of Sciences! ”

"What is the Academy of Sciences?" Zhu Yuanzhang himself didn't know.

"If you don't have one, you can build one, and you'll always need it!"

Chu Zhen said with a smile, and said to everyone: "Three questions, plus an additional question, after you have calculated it, you can submit it to the Qin Tianjian office, and I entrust you from the Qin Tianjian to help me read it first." ”

The people of Qin Tianjian looked at each other.

It turns out that they are examiners and can't participate in the answer, so they still want to get a reward!

"Class!"

Teacher Chu Zhen ended his first lecture in Daming.

It's a pity that no one shouted to stand up, teacher, goodbye.

He didn't expect to immediately change the concept of the Confucian children of the Ming Dynasty with one class, and he had to come back a few times, and the next time he came, he would prepare some lesson plans and teaching materials.

But even if he confirms what he said, Confucianism is probably still deep-rooted, and Chu Zhen has no intention of changing it all, as long as mathematics, physics and chemistry are added to the imperial examination, or someone in the Guozi Prison will learn mathematics, physics and chemistry.

Sow the seeds of a new discipline and see if it can grow into a towering tree in the future.

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