I am a primitive

This question really caught Han Cheng.

Quicklime without water will heat up when it encounters water. Han Cheng has known this for a long time and has become accustomed to it.

But the reason behind this, Han Cheng, who was born as a liberal arts student with a mess in mathematics, physics and chemistry, really didn't understand.

He thought for a while, and did not prevaricate with things like gods, but said quite seriously: "I don't quite understand why this happened, but what is certain is that as long as it is used properly, it will only give us Bring benefits, not harm."

After Han Cheng said this, he thought for a while and added: "If you want to know why this is the case, you need us and our descendants to think and study carefully..."

Han Cheng is not a person who has the burden of being an idol. He still knows how much he has, so it is not difficult for him to admit his ignorance.

Moreover, except for some necessary times, he generally seldom uses things like gods to fool and fool people, especially like now, when it involves some science and the like, he will not use gods to cover up.

Although he has a halo of the Son of God on his body, he is not stingy to teach more scientific things in this tribe.

Because he knows that these are the powerful factors for a tribe to move forward and develop further.

As for things like gods, after the society develops to a certain level, it will hinder the development of society to a certain extent.

Of course, as far as the current Qingque tribe is concerned, things like gods are still more beneficial to the tribe than harm, so there is no need to rush to do work on it.

Wu and the others seemed to understand Han Cheng's words, and Han Cheng didn't intend to go deeper to lead. Many things need to be figured out gradually, and they can't be rushed. Such things only need to be guided slowly by themselves. Few people can always make some changes...

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After the necessary experiments, the burnt lime in this kiln was pushed by a group of people wearing masks in the tribe with a trolley along the stone road to the position between the old and new walls of the tribe under the order of Han Cheng. .

Because of the previous soil borrowing to build walls and other things, there are many pits inside.

And because of the summer, most of these pits have accumulated water.

Han Cheng designated a pit not too far from the building, and asked people to pour lime into it.

Under the watchful eyes of many people, a cart of lime was poured in, and then there was a burst of hot air.

As the truckloads of quicklime were poured in, the water in the pit was sucked dry, and then the water in the rest of the pit was taken out and poured in.

Everyone in the tribe watched in amazement at this steaming scene with lots of bubbling.

After Han Cheng told everyone not to jump into the lime pit, he put aside the surprised faces, got some quicklime and put it in a clay pot, and ran all the way towards the tribe's cave.

To make God Son Han run so happily, there is basically not much left besides eating.

After coming to the cave, first pour some water into it to cover the lime, and then go to the carpenter's room where the lame is working, and get some saw foam from the ground.

Returning to the cave, Han Cheng saw that the lime was already a little cold, so Han Cheng took out the eggs from the earthen pot and rolled them back and forth in the earthen pot.

After wrapping it with some white ash, dig it out and roll it back and forth in the pile of saw foam, and then wrap it with a layer of saw foam.

Such a changed egg has already taken shape.

Of course, Han Cheng was only half-baked when it came to making eggs, so he didn't start with many eggs for the first time, but only made five eggs for experimentation.

In this way, even if it fails, the loss will not be too great.

After the egg change is done, all that remains is to wait, which is a rather lengthy process.

During this waiting process, the people in the tribe have already begun to excavate the lime that has been released. After mixing it with sand and mixing it with soil cement before, it is used to build stone walls, and sometimes it will be shoveled. Fill the gaps in the stone wall.

It has been verified that these white ash are indeed stronger than the earth and cement walls.

When everyone was overjoyed that the tribe got such a good thing again, Han Cheng 'developed' another function of Bai Hui.

This function needs to be talked about from the past few days.

At that time, everyone in the tribe was busy with their assigned tasks. Since Huo Erye's death, Wu, who had become the oldest member of the tribe, was also breastfeeding the little cub.

It was under such circumstances that God Son Han came leisurely and said something that surprised everyone.

What he said was to renovate the big brick houses in the tribe.

As soon as such words came out, everyone was stunned.

You must know that the big tile-roofed house of blue bricks used as a school and meeting room is the most majestic house of the Qingque tribe so far, and it is also the best house in the tribe.

Now the Son of God said that such a good house was going to be renovated, no wonder they were stunned.

Seeing the reaction of Wu and others, Han Chenggong knew that everyone had misunderstood him.

After thinking for a while, he said, "It's just a whitewashed wall."

As a result, after such words were spoken, a group of people still stared at each other, and there were some circles in their eyes.

In view of this, Han Cheng stopped talking, but directly sent people away, and then found the first carpenter, and gave him drawings on the ground, and asked him to make tools for powder walls.

Since you can't explain clearly, just do it directly. This is a good habit cultivated by Han Cheng in this era.

The tools used for plastering walls are very simple, usually only two if not counting ash pots.

One is made of wood, a rectangular shovel with a handle, and the other is a trowel.

The structure of the trowel is also very simple. It is a very smooth wooden board that is sawn on one side and then scraped with a plane.

In the middle of the back of the board, make another 'concave' handle, buckle it along the long direction of the board, and then fix it.

This way the trowel is ready.

After doing all this, Han Cheng did it himself, mixed some sifted fine sand with lime, put it into a clay pot, and started working with a wooden shovel and a trowel in one hand.

Han Cheng did not do the painting of the wall himself in the later generations, but it was not uncommon. Although it was the first time to do such a thing, although it was very unfamiliar, he could barely do it.

He first picks up some white ash from the ash basin with the trowel in his hand, then puts the white ash on the wooden shovel, and then gets the reconciled white ash from the wooden shovel to the bottom of the mold, which is the scraped area. Extremely smooth side.

Then, holding a trowel in his hand, he pressed the white ash on the wall to spread it.

After going back and forth twice, a small piece of brick wall was covered.

Only then did everyone realize that the renovation mentioned by the Son of God turned out to be such a renovation method, and it turned out that this was the whitewashed wall.

But it was just that, because they didn't realize how good-looking the big tiled house with blue bricks was after such a treatment.

This piece of lime is pasted on it, which is easily reminiscent of a big patch on the top of the clothes, which is awkward no matter how you look at it.

Han Cheng didn't know what Wu, senior brother and others were thinking. Even if he knew, he wouldn't pay too much attention to it, because he came from a later life and knew clearly the effect that whitewashed walls can produce.

It looks awkward at the moment, because the area of ​​the powder is too small, and the white ash that has just been powdered is not dry yet, and the color looks dull, so the effect does not look good.