Chang'an City, here is a restaurant.

A few days after the house was sold, Huo Guang decided to close the restaurant for a few days.

It is said that it is closed for rectification.

As a matter of fact.

It is because the flow of people in Chang'an City is too large these days, and the tavern is not easy to operate.

In the past two days, he is going to compile a book on science and engineering knowledge to teach those children.

But here's the thing.

Those children from poor families don't even know a few words, how can they learn science and engineering knowledge?

Isn't this playing the harp to a cow?

Huo Guang took this into account.

So.

What he wants to do is not to teach science and engineering knowledge rigidly, but to give these children enlightenment in science and engineering.

What is the best thing about enlightenment?

Pictures, of course?

Huo Guang still remembers that when he was a child in his previous life, he didn't know a few words, but he was very happy to see those comic books.

Words are never the first choice for human enlightenment.

Pictures are!

It was decided that the pictures should be the mainstay, supplemented by words.

So what should you draw first?

Huo Guang did not hesitate at all, and directly drew a picture of boiling water. Because at this time in the Han Dynasty, there was no so-called stir-fry pot in later generations.

So.

Huo Guang painted boiling water, and the picture used is the shape of a tripod.

The second painting.

He painted a steam balloon designed by Hero, an engineer from Alexandria abroad in the first century.

Right now.

Huo Guang's era was the period of Emperor Wu of the Han Dynasty, that is, in 115 BC.

And the appearance of the steam ball was a hundred years later.

But this did not affect Huo Guang to directly use Hiro's steam ball to enlighten these children. The steam spinning ball is the prototype of the steam engine that led the wave of the industrial revolution.

The third painting is not a simple painting.

It's a design drawing.

He combined something like a steam ball on the wheels of a carriage. The rotation of the steam ball drives the rotation of the wheels of the carriage, and the rotation of the wheels of the carriage, so that the carriage moves forward.

Will this be successful?

No!

It didn't work out.

The first purpose of Huo Guang's paintings is to enlighten these children in science and engineering knowledge.

Let them know that the steam produced by boiling water can be used in this way.

As for why Huo Guang's first picture is boiling water?

Very simple!

Because boiling water is really an existence that has accompanied human civilization to this day. All human science and technology are inseparable from boiling water.

If one day, human beings can completely get rid of the link of boiling water.

That only shows that there are two things in the human race.

One is that humanity has perished.

The other is that human technology has been improved across stages, and it can directly convert energy into human needs, skipping the link of boiling water.

The first three paintings, after the painting.

The fourth picture that Huo Guang wanted to draw was the original shape of the steam engine.

A heat engine that uses steam to expand in a cylinder to push the piston to reciprocate!

Even if this Huo Guang can't figure it out, can't he draw it?

If you can draw it, are you worried that you won't be able to do it in the future?

Feel relieved!

With the hands-on ability of the craftsmen, as long as they are willing to study diligently, they can ensure that they will be able to make such things in a few years.

Maybe!

At that time, Huo Guang was long gone.

But what he left behind him was the seed of hope!

After the original shape of the steam engine was drawn, Huo Guang unconsciously began to draw the action of the steam engine one by one.

For example, it is used in a horse-drawn carriage to make a concept diagram for an engine, and for example, the piston propulsion principle of a steam engine is changed to the piston principle of petroleum internal combustion.

Even.

There are also pictures of various planes, submarines, and so on.

Although these things allowed the Han Dynasty to develop for another four hundred years, it may not be able to come out.

But Huo Guang just wanted to point them in the right direction, and that was enough.

At this point in the painting, the direction of the steam engine is over.

Behind.

Huo Guang elaborated on the more difficult fundamentals of electricity, chemistry, and even the periodic table.

Anyway!

He used all the knowledge he had learned before to draw in a picture pattern that the Han Dynasty could understand.

For this.

In half a month, Huo Guang consumed nearly a thousand pieces of paper.

When he came out of this restaurant.

Already unkempt.

After tidying up the paintings, I returned to Huo Mansion to wash up and rest.

Afterwards.

He also recruited the blacksmith Ouyang Zhi and the carpenter Li Hong.

In addition to these two.

He also deliberately picked up Dong Xun from the racecourse, he can't let Dong Xun stay in a place like the racecourse all the time, right?

Of course.

All of Huo Guang's actions are purposeful.

He is not a love brain, and when he sees a beautiful woman, he boils sheep.

Dong Xun used to study at Dong Zhongshu and was literate. Huo Guang called her, not only to improve her life, but also to let her help her compile books.

The book paper thing was only made by Huo Guang a few years ago.

So there's no such thing as printing.

Huo Guang can also do printing if he wants to, but he doesn't want to do this at the moment. Why? Because books and paper have not yet become popular in the whole country, they engage in engraving printing and movable type printing, isn't there a problem with the brain?

Maybe.

After that, he will be completely in power.

It's not too late for him to get these again.

Besides.

Huo Guang also plans to let Dong Xun teach the children of those poor families to read, Dong Xun does not know much, but literacy is still enough.

In rural primary schools like his previous life, the teachers in them were farmers, and some were even vendors selling popsicles on the street.

But these people, as long as they are literate, can become teachers.

But.

At that time, it was 08 years ago, and Huo Guang was not clear in the future.

Now.

Huo Guang gathered Dong Xun, blacksmith Ouyang Zhi, and carpenter Li Hong together and showed them the design drawings.

Dong Xun didn't understand these very well.

But as soon as the carpenter Li Hong and the blacksmith Ouyang Zhi saw these drawings, their eyes lit up.

The so-called insiders look at the doorway, and the laymen look at the excitement.

Li Hong and Ouyang Zhi didn't know what the designs on these drawings were, but from those sophisticated designs, they could feel that this kind of thing was definitely not simple.

"Bo Luhou, did you call us here to make these things? But what should be done?" Li Hong asked, holding the drawing.

Huo Guang smiled faintly and said, "Li Hong, you don't have to worry, most of these are the work of blacksmiths."

"You're here to do Ouyang Zhi a favor."

"After all, you're a master carpenter, and you can help the blacksmith a lot."

Originally, after these were the work of a blacksmith, Li Hong was not very happy.

But then he praised him as a master, this guy was too happy for Li Hong.

Immediately, it was said that they could help.

Ouyang Zhi looked at the drawings, couldn't help frowning, and said, "These are all these

What, haven't seen it? Huo Yilang. Oh no, Boluhou, what is this for?"

Huo Guang smiled faintly and said, "Don't do anything, this is to lead the process of human civilization!"

"Civilization? Culture!" Li Hong questioned.

on this.

Huo Guang shook his head lightly and said, "It's civilization, the Book of Changes says, "Seeing the dragon in the field, the world is civilized", this civilization refers to the progress of people's livelihood, as opposed to barbarism!"

"Ahem." Li Hong coughed lightly twice to hide his embarrassment.

Huo Guang didn't care about this, and continued: "The civilization that Ben Hou wants to lead can be summed up in six words."

"Boil the water and throw stones!"

The words fell.

Huo Guang's gaze suddenly turned to Dong Xun and instructed her, "Dong Xun, you can write down what I said."

"Oh!"

Dong Xun nodded obediently, and then began to record what Huo Guang said.

Boiling water, simply put, is energy work.

And what about throwing stones?

It is to give power to an object.

Archery, catapults, and thunder cannons can all be said to be stone-throwing.

Even rockets that will fly into space in the future.

Comparing human civilization to boiling water and throwing stones, this sentence is actually a meme on the Internet.

Is it right?

That's definitely not right.

But it makes sense, and the metaphor is very vivid.

Huo Guang's main job is to enlighten the children of ordinary people, about physics, chemistry and other scientific cognition.

The effectiveness of enlightenment is not important.

But the spark ignited by enlightenment is very important.

Just like the ancestors of mankind, the first time they used tools, this is very important.

Side.

Ouyang Zhi, who looked like a big man, couldn't understand Huo Guang's words, and said directly, "What are you boiling water and throwing stones, you just teach those children this?"

"Then I will too!"

"What is this thing to teach a child?"

Huo Guang glanced at Ouyang Zhi and said angrily, "I'm talking about a metaphor, and it's not just a matter as simple as boiling water."

"Take your iron, for example, what do you do after you light the stove?"

Ouyang Zhi said directly: "Strike iron, quench, and create the required tool shape according to the requirements."

Speaking of striking iron, Ouyang Zhi has something to say.

After all, it's what he's good at.

Huo Guang directly stretched out his hand to interrupt and said, "Stop, stop, who asked you to say this, let me ask you, didn't you say that boiling water is anything to teach?"

"Then I ask you, what happens when the water boils?"

"What are you going to do?"

Ouyang Zhi shook his head directly.

This way.

Li Hong opened his mouth and said, "Drink, make tea and drink."

Seeing Li Hong making trouble, Huo Guang immediately glared at the other party and said, "Don't make trouble."

Li Hong had no choice but to scratch his head in embarrassment.

At this time, Huo Guang picked up a painting he had made earlier, which was the one that drew the steam spinning ball designed by Hiro.

At this time.

Huo Guang said to Ouyang Zhi, "Blacksmith Ouyang, I want you to make one of these things now, which is hollow in the middle, and can be filled with water and burned with fire below."

"The water boils, and it can pass through the pipes, and the hot air enters the sphere above."

"Do you believe it or not, the sphere spins without wind?"

Ouyang Zhi immediately shook his head and said, "I don't believe it, no wind can turn on its own? Heh, I've been striking iron for so many years, and I've never seen such a miraculous thing."

Huo Guang smiled, then looked at Li Hong, and said, "What about you, don't believe it?"

"Don't believe it!"

Li Mu shook his head.

Huo Guang immediately looked at Dong Xun, and before he could speak, Dong Xun said, "Huo Guang, I believe you."

Dong Xun said that he believed him, not to believe what he said, but to trust that he said it.

Huo Guang knew this reason.

So he nodded, smiled slightly, and said, "Practice is the only criterion for testing the truth, come on, Li Hong, Ouyang Zhi? Let's go make this steam ball and try it!"

Li Hong's carpenter shop is Huo Guang's.

Ouyang Zhi's blacksmith shop was also made by Huo Guang.

Huo Guang spoke.

Naturally, they wanted to listen.

Thereupon.

The prototype of the steam engine, the steam rotary ball, was made after a few days and nights of processing.

Since this kind of thing, it is not as precise as the barrel, and complex issues such as exploding the chamber have to be considered.

So the production process is not difficult.

Just beat the iron into an iron sheet, and then build it according to the way Huo Guang designed.

If it is square, it will be square, and if it is a tube, it will be a tube.

A little more difficult, maybe it's the ball of the steam ball!

But.

A hundred years later, the West can get something out, although the Han Dynasty was a hundred years earlier than him at this time, but the original industrial level is countless years ahead of the Western world.

You know the gears, right?

There are bronze gears in the tomb of Emperor Wen of the Han Dynasty.

The steam ball is a very simple piece of equipment, and with the cooperation of two craftsmen, it was quickly made.

Afterwards!

Huo Guang began to show them a magical side.

He first added water to the tin box, then sealed it, and asked people to bring a pile of firewood and burn it under the tin box.

Soon.

The water in the tin box boils, and steam enters the sphere through the pipe, and begins to emit steam through a special opening on the sphere.

Wait until a certain moment.

When a large amount of steam comes out, the steam ball spins on its own.

This magical scene stunned everyone present.

Especially the blacksmith and the carpenter, these two people are based on the graphics designed by Huo Guang to create a steam ball, but they still still don't understand why the wheel rotates on its own?

"Now, that's the initial use of boiling water. Ouyang Zhi, didn't you say a few days ago that you would also boil water? And will you do the same?" Huo Guang asked with a smile.

Ouyang Zhi scratched his head, looking at the spinning ball, he shook his head in embarrassment, and then asked, "Then what kind of thing can be used for rotating?"

"It's useless!" Huo Guang directly spread his hands.

The steam spinning ball is indeed the prototype of the steam engine.

But here's the thing.

It's useless to say it's useless!

When Ouyang Zhi heard this, he immediately said, "Then what are we doing with the hard work of making this thing in the past few days?"

Huo Guang replied directly: "Show it to the students!"

"Student?" Several people present looked at Huo Guang at the same time, as if they didn't quite understand what the student meant.

Huo Guang said, "Ah, didn't Ben Hou tell you?"

"I built a place outside the city for the children of the people to learn, but I don't plan to teach them the Four Books, Five Classics and Six Arts."

"I want to teach them how to boil water and throw stones."

"Oh, yes, Dong Xun."

"From now on, you're going to teach these kids how to read and to mark the papers."

Because a few days ago, Huo Guang had already greeted her and went to teach the children to read.

So.

Dong Xun was not surprised by this.

It's just that.

What does it mean to mark a question paper?

Dong Xun didn't understand, so he was immediately surprised and said, "Huh? Huo Guang, what are you correcting?"

Huo Guang waved his hand and said, "Test papers, that is, at the end of each month, I will give those children questions, and I will give you the answers when the time comes, and you can correct the answers."

"All the right ones will be given the best grades, and their families will be exempted from the monthly household money; Those who pass will be given good waiting, and their households will not be exempted from money."

"As for the failing ones?"

"Just let him go home, what should he do!"

(End of chapter)