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

The day is used for work and the night is for rest, the allocation is very reasonable.

This reasonable division was increasingly disrupted until people invented electricity and the guy who failed more than a thousand times but still persevered in inventing a durable electric light bulb appeared.

Driven by capital and other interests, the days are getting longer, the nights are getting shorter, and the time we sleep is getting shorter...

From this perspective, Han Cheng, who lived in a primitive society and could not make electricity or electric lights, could indeed complain about something that was as bright as daylight.

Of course, it is not known whether this kind of complaint contains any element of sour grapes.

Night fell again. Han Cheng felt at ease leaving behind many matters such as copper smelting. He half-lying on the kang, hugging his adopted wife, feeling the life in her belly growing stronger and stronger, his face filled with smiles.

Ever since he learned that Bai Xue was pregnant, this kind of thing has become Han Cheng's daily routine.

The happiness in this is not enough to be described to outsiders...

"Don't sit and weave. Go pick some mulberry leaves for the silkworms and move around more."

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

For those who are about to give birth, it is best not to sleep or sit for a long time. They should stand up and walk around more often. This will be conducive to delivery and will reduce suffering during childbirth.

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

Han Cheng didn't want anything bad to happen to Bai Xuemei and his children, so he attached great importance to these things.

Use the little knowledge you have about childbirth to do your 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 about it and followed her. He reached out and took the bamboo basket from Bai Xuemei and held it.

Of course, you have to take care of your own wife and children. As for copper smelting, you can postpone it for a while. Anyway, it cannot be made in a short time, so there is no need to rush and fight for it overnight.

Looking at Bai Xue who was so happy that she wanted to jump up because of his company, Han Cheng felt that his decision was very correct.

At this time, the mulberries are almost ripe. The small bumpy fruits are a little red on the side exposed to the sun, and white underneath.

The mulberries at this time are not very delicious. They taste sour and astringent with some green smell in the mouth, which is very different from the ripe, sour and sweet mulberries.

Han Cheng couldn't eat any more after eating two, but Bai Xuemei showed no sign of stopping. She put one after another into her mouth and ate with great pleasure. Han Cheng couldn't help but drool when he saw it.

It's not greedy, but sour.

Sure enough, a pregnant woman cannot be judged by common sense.

Sister Bai Xue likes sour food, which is not unique.

What's scary is people whose tastes change because they're pregnant.

Some people like the smell of gasoline, and some people like the smell of old houses...

For example, the wife of a colleague of Han Cheng in his later life liked to go to other people's pigpens during her pregnancy, and she would drool while looking at the pigs in the pigpens.

At first, the colleague thought his wife was craving for pork, so he quickly bought some and brought it home. After cooking it carefully, he found that his wife only ate two small pieces and stopped eating.

After repeated questioning, I realized that what I was craving for was not pork, but pig food...

After picking all the mulberry leaves in a bamboo basket, all the mulberries on a tree disappeared. But Sister Bai Xue was still staring at another tree, as if she didn't want to leave at all.

What Han Cheng couldn't stand the most was her expression, so he had to pick a lot more, wrap them in a big tree leaf, and hand them to Bai Xuemei.

Han Cheng walked in front carrying a bamboo basket, while Bai Xuemei followed behind with mulberries, eating them with such delight that her nose was dripping with excitement.

Han Cheng swallowed for a long time and felt that it would be difficult to eat ripe mulberries in the tribe this year.

After returning to the tribe to help Bai Xuemei feed the silkworms and arrange the "household affairs", Han Cheng found Heiwa and worked with him to think about the new copper smelting furnace.

The "vat" for copper smelting must be specially made, with a hole at the bottom to allow the molten metal to flow out of the vat.

For such a hole, of course, the lower the better, because the lower it is, the cleaner the copper liquid inside will flow.

According to this standard, it is most appropriate to open it at the bottom of the tank.

But of course this wouldn't work, so after some thought, he made a hole in the wall of the tank, as close to the bottom of the tank as possible.

As for the slag, after thinking about it, I came up with an idea, which is to take advantage of the fact that slag is not as heavy as molten copper.

Of course, don't use a spoon to scoop it out bit by bit. This is too slow and too dangerous, and it may not be able to get it clean.

The method Han Cheng thought of was actually very simple, which was to make a hole on the other side of the ceramic jar, and the position of the hole should be higher than this one. In this way, the slag floating on the upper layer could be discharged, and only the copper liquid would be left.

Moreover, with these two outlets, the large vats for refining molten copper can be reused, instead of having to smash them one at a time like yesterday.

As for the problem of the stove, it is also easy to solve. Just replace the bricks with yellow mud and clay.

These two things are extremely resistant to burning and will not melt like bricks.

After some discussion and some sketching on the ground, the two finally decided on the shape of the special pottery jar.

Then all that’s left is Heiwa’s performance alone.

After specializing in one thing for several years, Heiwa's skills became more and more proficient, and he had already left Han Cheng, the man who brought pottery into the tribe, far behind.

Watching Heiwa making pottery now is simply a visual enjoyment.

The mixed mud seemed to have life in his hands and was very obedient. As he moved, it quickly became what he had imagined.

The whole process can be described as flowing like water and commanding like an arm.

Before it got dark, a specially made clay pottery jar over 1.5 meters high and over 60 centimeters in diameter at the bottom appeared in front of Han Cheng.

This pottery jar is a little different from ordinary pottery jars. The difference is that the upper and middle part of the jar is a little thinner than the two ends, and it looks a bit like a vase for flowers.

The reason why it has such a unique appearance is that when designing it, Han Cheng suddenly remembered the brick-built chimney-like thing in the steel plant that he had seen from afar, with white smoke rising from time to time.

Although it is not known what it is used for yet, since later generations built it like this, it obviously has a reason for its existence, so Han Cheng used it without hesitation.