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

It is used for work during the day and rest at night, and the distribution is very reasonable.

It wasn't until people invented electricity that the guy who had failed more than a thousand times and persevered to invent the durable electric light appeared, and this rational division was more and more seriously undermined.

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

From this point of view, Han Cheng, who lives in a primitive society and can't get electricity and electric lights, can indeed complain about things that are as bright as day.

Of course, it is not known whether there is no grape sour ingredient in this kind of complaint.

The night fell again, and many affairs such as copper smelting 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 stronger and stronger life in her belly, and smiling one by one.

Since learning that Bai Xuemei is pregnant, this kind of thing has become Han Cheng's must-have homework every night.

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

"Stop sitting and weaving, go pick some mulberry leaves for silkworms and come back, and be more active."

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

People who are about to give birth should not sleep and sit for a long time, but should stand up more often, so that the time is conducive to childbirth, and when giving birth to children, they should suffer less.

When a woman gives birth to a child, it is like passing through a ghost gate, especially in primitive times and it is still the first child.

Han Cheng didn't think that anything bad would happen to Bai Xuemei and his own children, so he attached great importance to these.

Use what little knowledge you have about having children, and try 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, so he also followed, and reached out to take the bamboo basket from Bai Xuemei's hand, and let him hold it.

As for the matter of copper smelting, it can be pushed back slightly, anyway, it is not something that can be made in a short time, but there is no need to rush so tightly to compete for this day and night.

Looking at Bai Xuemei, who wanted to jump up because she was happy to be accompanied by herself, Han Cheng felt that his decision was very correct.

By this time, the mulberries were almost ripe, and the small pimple fruit was a little red on the side that was exposed to the sun, and it was still white underneath.

At this time, the mulberry fruit is not very delicious, and it is sour and astringent in the mouth with some green energy, which is very different from the ripe, sweet and sour mulberry fruit.

Han Cheng couldn't get out of his mouth after eating two, but Bai Xuemei didn't have a tendency to stop her mouth, she sent them to her mouth one after another, eating happily, and Han Cheng couldn't help but give birth to saliva in his mouth when he saw it.

Not gluttonous, but sour.

Sure enough, a pregnant woman can't live with common sense.

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

The scary thing is that people who have a unique taste because they are pregnant.

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

For example, the daughter-in-law of a colleague of Han Cheng's later generations always liked to go to other people's pigsty during pregnancy, and then watched the pigs in other people's pigsty swallow saliva.

At first, the colleague thought that his daughter-in-law was hungry for pork, so he hurriedly bought it home, and after cooking it carefully, he found that his daughter-in-law only ate two small pieces and stopped using chopsticks.

After repeated questioning, I learned that it was not pork that was hungry, but pig food......

After a bamboo basket of mulberry leaves was picked, all the mulberry fruits on a tree were gone, and this Bai Xuemei was still looking at another tree, and she didn't want to leave.

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

Han Cheng walked in front with a bamboo basket, and Bai Xuemei followed behind with a mulberry to eat, so beautiful that her nose was bubbling.

Han Cheng, who had swallowed his saliva for a long time, felt that it was difficult for the tribe to eat ripe mulberries this year.

After returning to the tribe to help Bai Xuemei feed the silkworms and arrange the 'family affairs', Han Cheng found Heiwa and pondered the matter of the new copper smelting furnace with him.

The 'tank' for copper smelting should be specially made, and an outlet should be left at the bottom of the cylinder so that the molten metal can flow out of the tank.

Of course, the lower the opening, the better, because the lower the opening, the cleaner the copper juice flowing inside.

According to this standard, it is most suitable to open on the bottom of the cylinder.

But of course this can't be done, after thinking about it, I opened this opening on the wall of the cylinder, as close to the bottom of the cylinder as possible.

As for the slag matter, after thinking about it, I also came up with an idea, which is to use the fact that slag is not as heavy as copper.

Of course, it's not a spoon to scoop it out little by little, it's too slow, it's too dangerous, and it doesn't necessarily clean it.

The solution that Han Cheng thought of was actually very simple, that is, to make an opening on the other side of the pottery jar, and the position of the opening should be higher than this, so that the slag floating on the upper layer could be discharged, and only the copper liquid was left.

And with these two outlets, the vats for refining molten copper can be reused, and there is no need to smash one at a time like yesterday.

As for the matter of the stove for the fire, it is also easy to solve, just replace the bricks with yellow clay and clay.

These two things are extremely resistant to burning, and do not burn like bricks.

After some discussion and sketching on the ground, the two finally settled on the appearance of the special clay pot.

And then the rest is Heiwa's one-man performance.

After specializing in one thing for a few years, Heiwa's craftsmanship has become more and more proficient, and she has already left Han Cheng, the person who brought Tao into the tribe, far behind.

Now watching Heiwa make pottery is simply a visual enjoyment.

The mud of harmony is like life in his hands, very obedient, and with his movements, it soon becomes what he expected.

The whole process can be described as a smooth command.

Before it was dark, a special clay bowl embryo with a height of more than one meter and a half and a diameter of more than sixty centimeters at the bottom had already appeared in front of Han Cheng.

This clay jar is also different from ordinary clay jars, the difference is that the middle and upper parts of the clay jar are a little thinner, thinner than both ends, and it looks a bit like a vase for flower arrangement.

The reason why there is such a unique appearance is because when designing, Han Cheng suddenly remembered the chimney-like thing he had seen from afar, which was made of bricks in the steel mill and rose from time to time with white smoke.

Although I don't know what it is used for the time being, since it has been built into this appearance in later generations, it obviously makes sense, so Han Chengcheng honestly and unceremoniously used it.