Listening to Ren Yan's words, the students of Class 9 looked at each other for a while.

How to make a brick house, so troublesome?

Can't there be a simple and easy-to-do solution?

At this moment, the students suddenly felt that they were a little careless.

This sturdy house doesn't seem to be as easy as they thought.

As if seeing the students' thoughts, Ren Yan coughed lightly twice:

"Do you think it's easy to build a brick house?"

"Even if you build the most humble brick house in the countryside, it will take at least half a month for that person."

"And you, even if there are many people, it is estimated that it will take about a week to complete it all up."

"Moreover, starting from bricks can also make you more aware of the origin of brick houses, which can be regarded as expanding your narrow knowledge."

Speaking of this, Ren Yan paused for a second, and then shrugged:

"Of course, then again."

"Teaching you to build a brick house is not in my plan in the first place, you begged me to teach you, and of course you can choose not to learn it now."

"But next time there is such a thing, you won't use me."

"It's very unethical to let people teach you things, and then not learn because it's too difficult."

"You teachers, I'm very tired now, and suddenly I don't want to teach."

"Why don't we disperse?"

At the end, Ren Yan looked at the students of Class 9 with a smile.

The students' hearts were cold for no reason, and they hurriedly smiled: "How can it, Teacher Ren~"

"Look at what you said, we're just a little surprised because it's so cumbersome~"

"How can it be too much trouble?"

"That's right, Mr. Ren."

"We just think that you know too much, and we just feel a little emotional~"

"How can it be that you don't want to learn~"

"You misunderstood!"

One by one, the students racked their brains, trying to make Ren Yan ignore the expression they had just had.

At this moment, the words are unusually sincere.

It's simply a fist heart, visible to the naked eye.

However, Ren Yan felt numb in his heart for no reason, and felt a lot of goosebumps all over his body.

'Why are these students so familiar with each other's sycophants now?' ’

'Who did you learn this from?!' ’

Ren Yan shuddered slightly, and looked at the students of Class 9 with disgust: "Don't you feel unconscionable when you say such shameless words?" ”

Student: "......"

'Minato! Aren't we here to make you forget about it?! ’

'Is it easy for us to rack our brains and think of compliments?!' ’

Now you say that you dislike it, you dislike it, do you know that it hurts our innocent hearts! ’

The students complained wildly in their hearts.

But on the surface, he can only maintain a polite but elegant smile.

For a while, Ren Yan and the students of Class 9 were speechless.

There was a bit of embarrassment in the atmosphere.

"Ahem!"

"Okay, since you're willing to learn, I'll continue to teach."

In the end, Ren Yan cleared his throat again and opened a new topic.

......

"As for the low-temperature kiln, the materials required are relatively simple."

"It's clay that can be found everywhere, and as long as it's viscous enough, it's a suitable material."

"Generally, in the Dragon Kingdom, as long as it is a piece of land, the soil in it can be used to make a low-temperature kiln."

"If you don't think they're sticky enough, you can add a little more water."

"That's why I told you to bring water."

As he spoke, Ren Yan casually took out a part of the soil from the mound of dirt and fused it with water, and slowly rubbed it up.

"As you can see, I'm in the process of making a cryogenic kiln right now."

With the words, Ren Yan's movements became faster and faster.

A piece of dirt was immediately flattened and rounded, and repeatedly ravaged.

The students were confused for a while, and after looking at each other again, they all saw a deep incomprehension in each other's eyes.

Can a brick-burning building really be made in such a child's play?

The students asked their own questions.

Hearing this, Ren Yanle slapped the kneaded mud ball on the ground: "Otherwise? ”

"You don't think that the so-called low-temperature kiln is something high."

"To put it bluntly, he's actually a by-product of playing with mud."

"It's not much different from you guys before and the urine sludge is not much different in nature."

"It's just a matter of applying some simple chemistry and physics."

"Do you think it's hard to get something that even the tribes of ancient times can come up with?"

As he spoke, Ren Yan pressed his hand on the mud just now and began to slowly squash it.

The students looked at each other, their faces flushed slightly:

"Teacher Ren, we are a new generation of new youth, and the little ones will not be with the urine mud~"

"Pull it down~" Ren Yan pouted: "When I was a child, I was living urine and mud, and it was almost engraved into the genes of human beings, who didn't do such a stupid thing when I was a child~"

"Even if it's curiosity, it's excusable, there's no need to be ashamed of it."

"At the very least, you teachers just..."

Halfway through the words, Ren Yan suddenly felt that something seemed wrong, so he quickly cut off the topic and refocused his gaze on your group in his hand.

"Ahem, okay, now the first step is completed, you have to watch carefully, don't think about what you have or don't!"

As he spoke, Ren Yan began to open a hole in this thing that looked like a mud cake.

From top to bottom, from left to right, more than a dozen holes were opened, large and small, until they were covered with mud cakes, and then stopped.

The students were speechless.

They wondered if they didn't bring up this topic on their own.

How can you say that if you don't have it, it's gone?

At this time, they couldn't help but feel a little regretful.

In the end, I still didn't hear about my teacher's embarrassment!

However, at this time, they did move their eyes to the mud cake in front of Ren Yan.

They are still a little curious about how this mud cake became a low-temperature kiln.

After poking the hole, Ren Yan carefully took the mud cake and placed it on top of a hole.

This pit was dug by Ren Yan just now during the preparation process.

In order to put this mud cake on it.

Therefore, the size of the pit was also controlled by Ren Yan to a moderate degree.

After placing the mud cake firmly on the top of the hole, he clapped his hands and exhaled a breath of turbidity.

"Well, now the most critical step of the low-temperature kiln has been completed."

"This thing is the core of the entire cryogenic kiln."

"Then here's the problem."

"You can now guess what kind of purpose this colander-like mud cake will do?"

As he spoke, Ren Yan's gaze swept over the faces of all the students.

The corners of his mouth also hooked up with his signature smile.