So at this moment, Ren Yan, who cut corners, did not have any psychological burden.
"Teacher, what's next?!"
Seeing Ren Yan jump out of the foundation and throw down the shovel, the students in Class 9 couldn't help but ask curiously.
"What's next?" Ren Yan looked back at them and replied naturally, "It must be building a house. What else can we do?"
"But before that, there is indeed another task that needs to be completed."
"We need to mix the excavated soil with water and wood ash to form some viscous clay."
“They are the main support for building brick houses.”
As he spoke, Ren Yan had already drawn some water from a well not far away.
Then some wood ash was taken from a nearby low-temperature kiln.
I just randomly mixed the ingredients and started stirring them.
After it turned into a sticky puddle, Ren Yan stopped what he was doing and said:
"This pile of clay is mainly used to replace cement. It can make two bricks stick together perfectly."
"Although the effect is certainly not as good as cement, because the materials of adobe bricks and these clays are almost exactly the same, the adhesion between them is actually not very bad."
"It's more than enough to build a relatively solid brick house."
After Ren Yan finished speaking, he started looking for useful wood nearby.
Although we now have the foundation, bricks and adhesive.
But the most basic framework still needs to be built.
However, when Ren Yan was looking for materials, Li Cheng asked curiously: "Teacher Ren, since this thing is not as good as cement, why don't we just use cement?"
Hearing this, Ren Yan turned around and rolled his eyes at the other person: "Nonsense, do we have cement now?"
Li Cheng scratched his neck embarrassedly: "Teacher Ren, that's not what I meant. I mean, why don't we just make cement?"
"Because I can't do it." Ren Yan answered casually:
“Although the formula of cement is not difficult, it only requires some limestone, clay, a small amount of iron powder and some optional gypsum.”
"But it needs to be calcined, and the temperature it needs to reach is not much different from the melting point of iron."
"Do you think these low-temperature kilns can reach that temperature?"
Hearing this, Li Cheng smiled bitterly and said nothing more.
Although Li Cheng didn’t know the exact temperature of the current low-temperature kiln, he was sure that it could not forge iron.
In fact, on the first day they built the low-temperature kiln, they were thinking about whether they could make some iron fire-gathering plates.
To this end, they also specially found some iron tools that were not used at all and threw them into the low-temperature kiln.
But no matter how long the calcination time is, the best result is that the iron becomes a little dark red and slightly softened.
There is still a long way to go before it can be forged, let alone melted.
So after Ren Yan said this, Li Cheng no longer had any thoughts.
However, Ren Yan looked at the students of Class 9 with interest:
"Actually, it's not impossible for you to make cement. I can take you from the low-temperature kiln to the iron smelting furnace. With the temperature of the iron smelting furnace, it will be no problem to burn some cement."
Hearing this, the students' eyes lit up.
But then his mood darkened because of Ren Yan's next words.
"But don't even think about building this house for now. By the time you can make cement, it will be almost time for school to start."
Hearing this, the students were speechless: "Then why are you still talking..."
"The final result is that we can't understand it in a short period of time..."
"It's fun~" Ren Yan smiled to himself.
“….”
The students were speechless for a while.
Damn it, if I could beat you, I would definitely let you experience the anger of students today.
Is there anyone who teases his own students like this?!
The students in Class 9 felt a little depressed.
The netizens were completely delighted.
Seeing this scene of Ren Yan teasing the students in Class 9, they felt relieved from the bottom of their hearts.
Isn't this what I like the most? !
Sure enough, Teacher Ren still understands them!
But then, they became a little curious.
Teacher Ren is not only able to build houses, but can he also smelt iron?
Isn't this thing a bit too beyond the scope?
Is this something a teacher should know?!
Netizens couldn't help but feel a little bit of anticipation in their hearts.
They were looking forward to Ren Yan coming up with some new things.
At this time, Ren Yan turned his attention back to building the brick house.
After teasing his students for a while, Ren Yan was in a good mood and quickly found the useful tree.
Under everyone's gaze, Ren Yan jumped into the foundation again, holding these trees that were slightly as thick as bowls.
He began to fix the trees along the four corners of the foundation and explained:
"Remember, even if it's a brick house, you still need to have an outline first."
"And this time it's different from the previous thatched house. We also need to make a roof on top of these outlines."
"So these trees must be as thick as possible, and the thickness of a bowl is the most suitable."
As he spoke, Ren Yan had already completely positioned the trees at the four corners, and in the middle of the four corners, he planted two more trees with a "Y"-shaped opening on the top.
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