Of course, Lu Heng would not expect to learn how to build a steam engine by himself by teaching this group of students and letting them start from scratch step by step, just like Newton discovered gravity through an apple.

It's a little too impractical.

After all, at the beginning of the industrial revolution in the West, almost a hundred years passed from the germination of demand for steam engines in the capital market to Watt's success in producing a composite steam engine that could drive trains.

That was when Europa already had the species of scientist.

Today's Datang? Most of these children didn't even know the words, so let them start from scratch, so forget it.

Not only is time short......

Even if there is time, then why bother!

Lu Heng can draw the drawings of the composite steam engine by himself, this thing is not difficult to do, and the rubber ring can also be replaced by other soft metals. If it is only a small amount of production in the early stage, there is no need for a machine tool to increase the accuracy and accuracy, which is something that needs to be considered in the later stage of mass production.

He raised these children for two purposes.

First, it is to train a group of people who know the overall structure of the steam engine very well, and follow the train back and forth, so as to avoid the car breaking down on the road and no one knows how to repair it.

Secondly, I want to find even a few people who are suitable for further study among the hundreds of children.

Science needs soil, but it also takes talent to study science.

Find such a bunch of children who don't understand anything like a blank sheet of paper, of course, to maximize the advantage.

One of the main advantages is that they have not been poisoned by a lot of acid, and they still maintain a true curiosity about this world!

Lu Heng gradually discovered one thing in the process of teaching-

Science education starts with a baby, and that's not wrong at all!

His wife, Li Mingyu, may be a pearl in the sea. But not counting her, it stands to reason that Sun Simiao and Wu Zhao, who are famous in history, are already the top smart people in this era.

They are already very quick to receive information, but not as fast as these children!

Probably because of their poor background, students will take every opportunity to absorb all the knowledge they can get like a sponge.

The progress is very fast.

Lu Heng mainly teaches physics and mathematics, and there is no need to teach chemistry for the time being.

As for the cultural class, Cheng Chumo and them will do it for them, anyway, they are just enlightened and literate, there is no need to learn any Confucian classics, and there is no need to find a master to take classes.

A month later.

In the office of the technical school.

Cheng Chumo came back from the classroom exhausted, and his whole body seemed to be paralyzed.

He glared at Lu Heng weakly and complained:

"I don't want to do it anymore!"

"Do you know how hard it is to teach a group of teenage monkeys how hard it is?!"

"They can't sit still and can't sit still, forget it......"

"Keep pestering me to ask what pistons, what steam-driven, what's the matter!"

"That's not what I taught at all!"

"Moreover, a group of children surrounded me and asked this and that, I still couldn't answer a word, this is so fucking embarrassing, Lu Heng !!"

In the end, Cheng Chumo was so angry that he couldn't even care about shouting Lu Heng's words.

It's break, and there's a group of people sitting in the office.

There are Sun Simiao, Wu Zhao, Li Mingyu, who have studied physics and mathematics with Lu Heng from the very beginning, and there are also people like Cheng Chumo and Li Chengqian who were arrested to enlighten.

Among the latter, there are also many familiar faces.

Li Jing, who announced that he was retiring and staying at home with his wife, was also included.

Hearing Cheng Chumo's accusation, Li Jing laughed:

"Oh, you're still too young. What's there to be ashamed of in this kind of thing? ”

"The old man and Doctor Sun are both at this age, aren't they also teaching children with a few of you!"

In the office, Li Jing is the oldest except for Sun Simiao, and he is very convincing when he says this.

But Cheng Chumo didn't feel good, but he was even more faceless.

Lu Heng sneered:

"Brother Chu Mo, look at Uncle Li, he is over half a hundred years old, and I usually move a small bench to audit when I teach students, and the progress is the same as theirs."

"Although he doesn't know much, at least when the students ask, Uncle Li can still talk to everyone and discuss a few sentences."

"Look at you again, day by day, I know that I have gone fishing!"

"The third train will have to be named after you, but when someone asks you how the train runs, your eyes are black, that's a shame!"

Lu Heng's mouth, I don't know how many people choked to death.

Cheng Chumo naturally couldn't resist it.

His face turned red and said, "Lu Hanzi, I advise you to be careful when you speak!" ”

Lu Heng spread his hands: "What's the matter, do you want to practice?" ”

Cheng Chumo was completely speechless.

You can't scold it, and you can't win it.

I can't live this day!!

At this time, Zhang Chuchen, the red-whisked woman sitting next to Li Jing, also began to add fuel to the fire.

She covered her mouth and laughed: "Virtuous nephew, your father praised you for your talent a few days ago, and you have started teaching students." In a few days, he wants to go up the mountain to see what your teaching is like. Aren't you ready for this? ”

Cheng Chumo's face turned from red to white, from white to black, and his whole face was like a palette, and finally it was all green.

The place where his father Cheng Bites Jin usually stays can't be closer to the school.

It's at the foot of the mountain!

From the camp in the western suburbs to the school, you only need to walk the mountain road for less than half an hour.

If it is Cheng Yanjin's physical fitness, it basically only takes two or three quarters of an hour!

Who the hell can withstand this raid?

"Sunrise, sunrise, are you okay?"

After being silent for a long time, Cheng Chumo turned his head to look at Lu Heng, pulled his sleeve and pleaded:

"Either you let Brother Wei go home and rest for a few days, or you recently gave me a make-up lesson so that I can learn something about it."

"Otherwise, if my father comes and sees the students speechless, he will be beaten up for his brother when he goes back!"

Lu Heng calmly blew the tea in his hand and said with a smile:

"That's fine......

"But your third train will have to be moved back to the fourth."

Cheng Chumo was anxious on the spot:

"What do you mean, who is the third car named?!"

The things that were said to be good suddenly changed hexagrams, and everyone was anxious to change them.

He even felt that this guy was afraid that he was going to regret it!

However, Lu Heng raised his eyes and glanced at the other side, and Cheng Chumo immediately understood what he meant.

"The third train......

"Naturally, it's for my wife."

"I've thought about it, the third train is called Yuzhang!"

"Listen to it!"