I am a primitive

What Han Cheng likes most is the enthusiasm of the people in the tribe, which is reassuring to watch.

However, sometimes it is not possible to do things only with passion, and some things will not be transferred by people's will.

Just like the current wood, no matter how loudly you slap your chest, you can also slap your face as hard as you can.

He just made a promise, and then started working non-stop, when he encountered a problem that troubled him, but he couldn't solve it.

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The problems Mu Mu encountered were so serious that he had no clue.

That is, he has no way to chisel a stone into a column that is not too thick.

It's not that the stone is too hard to chisel, or that his strength is too weak, but that he can't draw a regular circle on the stone slab that will become the millstone.

If he couldn't draw a regular circle, he couldn't chisel a regular round stone mill.

It was really helpless to say that the matter of digging a stone mill was stumped by such a thing that he had never thought of.

He tried for a while on the granite slab but failed to draw a regular circle. In desperation, he had to go to the carpenter for help.

After listening to Mu Mu's words, Lai came here without saying a word, but he didn't take it seriously in his heart, isn't it just a circle?It's such a simple thing.

As a result, after picking up the stone and drawing on it for a while, the limp also limps.

Facts have proved that the seemingly simple circle is not easy to draw at all.

The stone who often holds the 'pen holder' passed by here, and after understanding the dilemma of the two of them, he volunteered to do it.

Although the circle he drew was rounder than the ones drawn by the wood and the lame, it was still worse.

After trying for a while, but all ended in failure, the clever and studious Shitou was also annoyed by this simple circle.

Wanting to ask Shenzi about the solution, Shenzi went to Yanshan. After hesitating for a while, he had to ask the second wise man Wu in the tribe.

Wu has enough enthusiasm for making soybeans from beans. After hearing about this, he immediately came here.

After some gestures, he was also helpless.

For a while, several people were holding their heads and thinking hard here.

A simple circle baffles them all.

Wu Wu scratched his scalp in distress, and lost a lot of hair, so that the already thin hair became even thinner, speeding up the process of approaching the Mediterranean Sea...

At this time, Han Cheng was in Yanshan.

After explaining the structure of the stone mill to Mu Mu, he brought the Gouzi army and some people from the tribe to Yanshan.

The stone mill can be handed over to the wood for them to make, and the salt bittern needs him to come in person.

Compared with a few years ago, Yanshan at this time has also undergone many changes.

The desolate scene has been reduced a lot, and there are a lot more people.

In one part of Yanshan Mountain, there were a lot of gravel scattered, and there were more traces of man-made chopping on the stone wall.

This is the trace left by the people of the Qingque tribe, who have been hammering the salt mine for boiling salt for a long time.

Around the expanded and restorated spring not far from Yanshan Mountain, as well as downstream, the vegetation does not grow vigorously.

On the one hand, it was trampled back and forth by people who boiled salt, and on the other hand, it was not unrelated to the thin layer of hoarfrost on the ground.

This is a man-made saline, and it is predictable that it will continue to expand over time.

This is the first scar left on this land by the people of the Qingque tribe with the continuous development of human civilization.

The salt mine was smashed, put into a large stone mortar and smashed into foam as much as possible, and then put into a large pottery basin filled with water to stir and melt.

After a little settling, the mat is wrapped in burlap wrapped with charcoal, and the filtration begins...

People who often cook salt in this matter have already become extremely proficient in it.

But this time it was different.

In the past, a basin of water in which salt mineral powder was dissolved was filtered to the end, and the remaining turbid sediments would be poured out. This time, the Son of God did not do this. A large amount of water with finely crushed stone foam was retained and stored in an earthen pot.

Although they didn't know what the Son of God wanted these things for, they did it anyway.

Of course, Han Cheng wanted these things to make bittern.

His idea is very simple. The previous procedures produced salt, and the bittern was among the things that were filtered out.

Bittern is a highly toxic substance, mainly because it has many chemical components. He has also heard of some people who can't think of drinking bittern to commit suicide.

However, salt mines that have not been filtered, purified, and purified will also be poisoned to death after people eat too much.

Putting the two against each other, it's not surprising to know that bittern is among the things that get filtered out.

What troubled Han Cheng was how to extract the bittern from these impurities.

Facing the turbid crockpot for a long time, Han Cheng, who couldn't think about it, felt dizzy for a while.

Time travel is really not suitable for liberal arts students.

If you travel to a familiar dynasty, as a liberal arts student, you can also use familiar poems to slap historical celebrities in the face, or change the direction of history quietly and invisible based on the familiar historical process .

But after traveling directly to this era, I was really a little bit blind.

Every time when the knowledge of physical chemistry is involved, Han Cheng basically feels a sense of frustration that he has nowhere to speak.

"Cook them too."

The big-headed Han Cheng can only be regarded as a dead horse as a living horse doctor. It doesn't matter whether he can do it or not.

Even if the method is unreliable, it is better than sitting here without doing anything and feeling melancholy.

The salt cooker was a little dazed when he heard Han Cheng's words. Could it be that table salt can be boiled out of these things that have been dumped in the past?

I was puzzled, but my subordinates were not slow, and soon set up another clay pot.

Pour the muddy water mixed with a lot of stone foam into it and start boiling.

After a while, the water boiled and the white air evaporated. At the same time, the water became more turbid.

Han Cheng, who stood watching from the sidelines, couldn't help sniffling. The possibility of obtaining brine in such a rough way was really not very high.

The flame continued to burn, the water in the pot gradually disappeared, and some white things appeared at the bottom of the pot, mixed with a lot of fine stone foam.