I am a primitive

The tribe has been looking for iron bacteria for so long, and the iron they get is very limited. The pot boiled out seems to be more than all the iron utensils in the tribe combined, which makes them unhappy ?

They were happy, but Han Cheng couldn't be happy, because in his memory, copper didn't seem to have this color.

The things that appeared in front of my eyes looked like slag no matter how I looked at them.

Han Cheng couldn't help sniffling. He realized that he had made another serious mistake, that is, he did not separate the molten copper from the slag.

The two are inseparable, so it is a bit difficult to get pure copper out.

"Smash it."

After waiting for a while, when the temperature dropped even lower, Han Cheng asked someone to lift the vat off the stove.

He knocked it upside down on the ground for a while, and seeing that the mixture of copper and slag that had solidified into one piece did not fall down, he made a noise and asked someone to smash the big tank.

There is no Sima Guang in the tribe, but the smashing of the tank is just as clean and neat.

These people who were stimulated by the metal like beating chicken blood smashed the good tank to pieces after receiving Han Cheng's order.

Then what was frozen inside came out.

This is a cylinder in the shape of the bottom of a tank, the bottom is purple metal, and the top is slag that tends to be black and feels relatively empty to the touch.

The purple metal is extracted pure copper.

Han Cheng found a stone and smashed it for a while, and also dropped some slag, but it was impossible to separate the slag from the copper in this way.

If you want to separate the two, you can only do it while they are liquid.

After looking at it with regret for a while, Han Cheng didn't want to do anything more to feel sad about the failed refinement, because he didn't expect to succeed once before the refinement.

Moreover, the copper smelting this time was not in vain. Han Cheng discovered from the inside that there was a hole in the bottom of the smelting vat, and found that the slag was lighter than copper and would float on the copper liquid after melting.

With these two discoveries, how to separate the slag and copper liquid is easier to do.

"Son of God, here!"

A third discovery soon emerged as well, still a deficiency.

Hei Wa pointed to the stove and said to Han Cheng.

As the charcoal fire was extinguished, the stove gradually cooled down.

Following Heiwa's guidance, Han Cheng looked over, and saw that many bricks inside the stove had been connected together, and the surface was smooth, as if he had touched tiles.

This is the effect produced after the temperature inside is too high, the bricks cannot withstand it, slowly melt and cool down.

"Give up this stove!"

Han Cheng, who was touching the smooth brick, suddenly turned pale, because he thought of a terrible scene——

As the charcoal continued to burn, the bricks of the stove gradually melted and became softer, and then they could not bear the weight on them and fell apart.

The large cylinder filled with half a tank of molten metal tilted and fell, and the molten metal containing the terrifying high temperature quickly rolled out and landed on the person...

Imagining such a terrifying scene makes people shudder, especially for those who have just stood by the stove for a long time.

Heiwa and the others don't know why Shenzi asked someone to scrape this good stove. In their opinion, it is very good that such a situation occurs, because not only does it look good, but the whole stove also looks stronger up.

Their doubts only existed for a short period of time. After listening to Han Cheng's description of the horrible scene, they no longer felt that it was such a good phenomenon.

-------------Chapter Dividing Line---------------

There are many ways to divide time, such as year, month, day, and four seasons. Among these many time divisions, Han Cheng thinks that the best way to divide time is night and day.

It is used for working during the day and resting at night, and the distribution is very reasonable.

Until people invented electricity, and the guy who failed more than 1000 times and insisted on inventing durable electric lights appeared, this reasonable division was increasingly damaged.

Driven by capital and various other interests, the days are getting longer and longer, the nights are getting shorter and shorter, and the time for sleeping is getting shorter and shorter...

From this point of view, Han Cheng, who lived in a primitive society and couldn't get electricity or electric lights, could indeed complain about the thing that was as bright as day.

Of course, it is not known whether there is no grape in this kind of complaint, saying that grape acid is in it.

Night fell again, copper smelting and many other tasks were left behind by Han Cheng with peace of mind, half lying on the kang, hugging the daughter-in-law he picked up, feeling the increasingly powerful life in her stomach, with smiles all over his face Yingying.

Ever since he learned that Bai Xuemei was pregnant, this kind of thing became a must-have homework for Han Cheng every night.

The taste of happiness in this is not enough to speak to outsiders...

"Don't just sit and weave, go and pick some mulberry leaves for the silkworms, and be more active."

The next day, Bai Xuemei was going to weave, but Han Cheng stopped her and asked her to pick mulberry leaves.

For those who are about to give birth, it is best not to sleep and sit for a long time, but to stand up more, so that the time will be conducive to giving birth, and you will suffer less when giving birth.

Giving birth to a woman is like going through the gate of hell, especially in primitive times and it is the first child.

Han Cheng didn't expect any bad things to happen to Bai Xuemei and his own children in time, so he attached great importance to these things.

Use my poor knowledge about childbirth to try my best to reduce the risk factor.

Bai Xuemei obediently picked up a commonly used bamboo basket and went to pick mulberry leaves. Han Cheng thought for a while, then followed, and reached out to take the bamboo basket from Bai Xuemei's hand, and let him hold it.

My own wife and children, of course, I have to take care of myself. As for the matter of copper smelting, I can push it back a little bit. Anyway, it can't be done in a short time, so I don't have to rush so fast to compete for the day and night.

Looking at Bai Xuemei, who wanted to jump up happily because she was with him, Han Cheng felt that his decision was very correct.

At this time, the mulberries are almost ripe, and the small lumpy fruit is a little red on the side exposed to the sun, and the bottom is still white.

At this time, the mulberry fruit is not very delicious, and it tastes sour and astringent in the mouth, which is quite different from the ripe, sour and sweet mulberry fruit.

Han Cheng couldn't put his mouth down after eating two, but Bai Xuemei didn't have the tendency to shut up at all, she sent one after another to her mouth, eating it so much that Han Cheng couldn't help but look at it. Live to produce saliva.

Not gluttonous, but sour.

Sure enough, a woman who is pregnant cannot be treated with common sense.

Bai Xuemei likes to eat sour, which is not so unique.

The scary ones are those whose tastes have changed due to pregnancy.

There are those who like to smell gasoline, and those who like to smell the smell of old houses...

For example, the daughter-in-law of a colleague of Han Cheng's later life, during her pregnancy, she always liked to go to other people's pigpens, and then watched the pigs in other pigpens and couldn't help swallowing.