Chapter 31: The Great Influence of a Simple Truth

The night was quiet, and it took a long time for the small flame at the entrance of the cave to shake feebly, as if it was about to fall asleep like everyone in the cave.

The old primitive man kept vigil by the fire, and would put a little firewood into it from time to time.

Keeping the flames from extinguishing is a very important task.

The emergence and utilization of fire is a great leap in the history of human evolution!

The tribe has also mastered the method of drilling wood to make fire, but it is too troublesome to drill wood for fire. It is not as convenient as it is now, and it is more convenient to send people to guard it day and night.

Anyway, these two old primitive people are also getting old, and the rest of the work is basically impossible.

With a leather covering under his body and a thick layer of withered grass under the leather, Han Cheng's sleeping place is more comfortable than that of ordinary people. He would have already fallen asleep at this time in the past, but tonight, he has no intention of sleeping.

There are generally only two reasons for insomnia at night, one is sleeping too much during the day, and the other is something on the mind.

In later generations, the first reason can basically be ruled out.

As Han Cheng who came from later generations, the first reason can also be ruled out, because he didn't even close his eyes during the day.

The reason why he can't sleep at night is because his mind is full of pottery.

He kept recalling every step of the pottery made by the old grandma in his memory, and then compared the procedures he performed this time, trying to find out the reason for such a large gap between the two.

He has been thinking about this matter from day to night and then into the night, but he still doesn't have much clue.

Although he found three suspicious places, Han Cheng always felt that this was not the main reason for the large number of broken pottery.

Han Cheng sat up from the 'bed', put on a leather coat, put on animal skin socks, and walked to the outer cave. He has a habit from later generations, that is, if he can't sleep at night, he likes to get up at night.

The old primitive man who kept watch at night was used to people going out at night to solve their physical problems.

Every time someone got up, he would turn his head and take a look. If it was an adult, he would sit next to the fire and not get up. If it was a child, he would get up and help the child open the heavy stone door.

This is also one of his responsibilities.

When the old primitive man heard the footsteps, he turned his head habitually, and after recognizing that the person who came was the Son of God, he quickly got up.

Before Han Cheng could make a sound, he had skillfully opened the stone door.

There was silence outside, only the bright stars inlaid on the dark blue sky, which looked extraordinarily clear and beautiful, far from being comparable to the night sky that passed through several layers of smog and passed through the neon lights everywhere in later generations.

In the night, from time to time, there would be a few distant roars of beasts that seemed to blend into the night, which were chanted by the still ruling prehistoric bosses in the night.

The air was cold in the morning in spring, and it was not too much in the evening. Although it had not reached the level of freezing, Han Cheng, who had just come out of the cave, couldn't help shivering several times, so that even the crystal clear The water column has become a little skewed.

Han Cheng was exerting his strength. He wanted to quickly drain the water in his body and return to the warm cave.

"Snapped!"

Han Cheng didn't go back, nor did he fall into the pit because of too much force to urinate, but raised his hand and slapped himself hard on the forehead.

He wasn't crazy, but he suddenly figured out what was going on, and it was this thing that had troubled him for a whole day and midnight!

Damn, such a simple truth was actually ignored by me!

Suddenly enlightened, Han Cheng wished he could slap his head again.

The reason pottery breaks a lot is simply because it expands with heat and contracts with cold!

After warming up and coming out of the cave, I couldn't help shivering when I suddenly came into contact with the cold air. The temperature difference in it was about ten degrees at most.

When the pottery just came out of the kiln,

From extremely hot to extremely cold, the temperature difference in between is more than a hundred degrees!

It would be strange if it didn't crack under such strong stimulation!

After figuring out the relationship, Han Cheng relaxed in his heart and stretched out his hands to touch the frozen little sparrow, which was left with only one head, and hurried into the cave.

His mind was gone, he lay on the bed covered with thick fur and soon fell into a dream...

The small river is very lively, because I witnessed a miracle and experienced the usefulness of clay-fired pottery. People in the tribe now have great enthusiasm for pottery.

Especially after hearing that the Son of God was going to burn pottery again today, everyone was even more active.

After eating early in the morning, they all came to the small river.

With the experience of last time, everything will be much smoother this time.

However, compared with the last time, the pottery to be fired this time can be much more.

Surrounding the somewhat solid mud pit that was burnt last time, Han Cheng asked people to dig a lot around. After excavation, the pit reached almost four square meters.

Then it is to spread hay, put mud embryos, fill hay, paste mud, light fire, and seal the hole.

All that's left is to wait.

The big brother and the others went hunting. Han Cheng brought a group of little primitive people here to guard the simple mud kiln while making mud embryos. Observe the temperature and small holes on the mud seal to see if the fire inside has been extinguished. .

Because there are enough mud embryos in the bowl, if they are all fired successfully, one person will not be a problem.

So Han Cheng asked people to reduce the production of bowls and make more clay pots and large vats that were relatively scarce.

Pottery basins are also manufactured.

There were already a lot of mud embryos, so there was no need to hurry as before. After noon, Han Cheng led the people to clean up by the small river and returned to the cave.

In the past few days, because he has been busy with pottery, he has put down the teaching of Mandarin and Chinese characters. Now that the pottery is basically on the right track, Han Cheng naturally wants to continue the course that has been interrupted for a few days.

What is taught today is very simple, that is, the newly emerged "pottery" includes its pronunciation and writing, as well as the "pottery bowl", "clay pot" and "cylinder" derived from "pottery".

Because everyone is very interested in the newly appeared 'Tao', even though the word 'Tao' is more complicated and difficult to write, everyone learns it very quickly, especially Hei Wa, a young pottery master, who couldn't remember it before. He who is good at writing, can now write the word "Tao" silently very quickly...

Around the burning fire, there were three more stones arranged in a triangular shape. On the stones were placed clay pots with water in them.

Under the continuous licking of the flame, the water in the clay pot had already begun to emit white gas.

This relieved the old primitive man who had been worrying that the fire would crack the pottery, and then the water would put out the fire.

Like the rest of the people in the cave, he didn't know the reason for Shenzi's strange behavior, but now they were getting used to it, after all, there were too many behaviors of Shenzi that they couldn't understand.

Han Cheng didn't want to do anything, but simply wanted to burn his mouth with hot water for a drink.

He has been here for several months, and he has never encountered hot water except for the hot urine, so it is really sad to say it.

The water in the clay pot would not open when it was dry and white, which made Han Cheng a little depressed. It seemed that he had to make the lid immediately. This would not only prevent dust from falling into the water, but also keep it warm .