Chapter 560: Knowledge Gained With Life

The firewood was brought, and a flame was lit in a room in the slave courtyard.

Han Cheng picked up the two smallest pieces from several gravels and threw them into the fire.

Under the gaze of everyone, the two green stones began to change color and turned black within a short time.

After burning for a while, Han Cheng used a branch to pull out the two small pieces of blackened stones.

The stones burned by the flames became very fragile, and one piece had already cracked during the pulling process.

Han Cheng put the stick in his hand on the pulled out stone, pressed down, and broke it without much effort.

After waiting for a while, after the broken stone cooled down, Han Cheng knelt down, picked up a small piece of burnt black stone, twisted it with his fingers, and it turned into fine powder.

Looking at the fine dust in his hand, the smile on Han Cheng's face finally began to be uncontrollable.

This green stone is malachite. Where there is malachite, there must be an open-pit copper mine nearby.

Because malachite is the long-term oxidation of open-pit copper mines and gradually formed when it seeps outside.

Malachite has always been an important basis for people to find copper ore.

This black fine powder is the oxidized copper. If it is reduced with charcoal at high temperature, copper can be obtained.

But he didn't do this, because there are too few malachites.

Han Cheng's actions affected the hearts of the people around him. When he smiled, the people watching around him also breathed a sigh of relief and became excited.

"A metal can be extracted from this stone. It is not as hard and sharp as iron, but it is just as useful."

Han Sung announces the happy news to those around him.

Copper is soft and not suitable for making sharp tools, but it is still very good for making blunt tools. After all, it is easier to shape and has toughness that stone does not have.

However, if tin ore and lead ore can be found, copper-tin or copper-tin alloy can be smelted, and this situation can be greatly improved.

Because copper-lead or copper-tin alloy is bronze.

Bronze is hard,

It can be used to forge sharp weapons and farm implements.

The historically famous swords such as Gan Jiang and Mo Xie are all bronze swords.

Of course, the chopping is not as good as the well-crafted steel knives of later generations, but it also directly proves the feasibility of using bronze to build such utensils when steel has not been greatly developed.

Tin ore is relatively easier to solve, because generally tin ore is easily associated with copper ore.

Speaking of it, it is very reasonable that bronze appeared first in the history of civilization development, and then iron and steel appeared, because the melting point of the metal ores needed for bronze is much lower than that of iron and steel.

After Han Cheng announced the news, Wu and the others beamed with joy.

The existence of such things as iron knives and axes made them deeply aware of the usefulness of metal tools. How can they be unhappy when they hear Shenzi announce that they can make tools from another kind of metal from this beautiful green stone? ?

As for Han Cheng's words that it is not as good as iron, they simply ignored it. For them, as long as it is metal, it is fine.

"Where did you get this stone?"

Han Cheng asked the long legs standing not far away.

The long legs still seemed a little dazed, no matter what, he never thought that metal could be extracted from the stone that he used as a talisman.

He had seen metal before. The somewhat blackened ax carried by the lame carpenter in the tribe was made of metal.

Even though he had seen the lame guy chopping down trees with a black ax several times, Long Legs was still amazed at the speed.

Now that he knows that the amulet he has been wearing for a long time can extract a kind of metal, how can he not be in a daze?

"In the... Horde..."

Long Legs slowly told the origin of malachite in broken Mandarin.

Han Cheng also slowly figured it out.

On a mountain near the Teng Snake Tribe, the vegetation is sparse, and there are some beautiful blue puddles there. Long Legs picked up a piece of beautiful malachite of suitable size there, polished it, tied it with a rope and hung it in the Neck as a talisman.

During the long-legged talk, Han Cheng also heard another thing.

That is, someone in the Tengshe tribe once drank the beautiful water, and then had a stomachache, and then died.

Since then, they have gained a knowledge that the beautiful water in those pits is not drinkable.

This is the characteristic of the primitive era. A lot of knowledge is acquired with the death of people.

Han Cheng asked the long-legged man why he drank the water in the stone pit, and the answer he got was that the water there was as blue as the sky, and some people believed that after drinking it, they would be blessed by the gods.

Han Cheng couldn't help sniffling, it really is the ignorant who is fearless.

By the time the rain stopped for nearly a day, it was already dark.

The rain stopped, but because it was already night and the sun did not rise, the air was still cool, and it was the most comfortable to sleep at night.

Han Cheng didn't feel much sleepy at this time. On the one hand, he slept too much during the day, and on the other hand, he was thinking about the surprise news he got today.

There is no place to find when you break through the iron shoes, and it takes no effort to get it. It is a true portrayal of the news of the copper mine this time.

It was a pleasant surprise and a surprise to look around for copper ore to no avail, and to find it right under our noses.

The scale of the copper mines there has grown from Han Cheng, who doesn't care too much, because according to the current situation of the Qingque tribe, even the smallest copper mine is enough to use

I have to go to the old lair of the Tengshe Tribe to see what is going on with the copper mine, and wander around to see if I can find traces of the tin mine.

After thinking about the copper mine and things related to copper for a while, Han Cheng made such a decision in his heart.

After all, he is the only latecomer in the tribe who is more familiar with these things, so he has to go to this matter.

And he had to leave as soon as possible. On the one hand, he wanted to confirm these things as soon as possible, and on the other hand, Bai Xuemei would give birth soon.

He had to do something about it before Bai Xuemei gave birth, and then return to the tribe from there.

No matter what kind of custom is in this era, when Bai Xuemei gives birth, Han Cheng will return to the tribe and stay by Bai Xuemei's side.

Because this is the most vulnerable moment for a woman, and she is prone to danger. Although Bai Xuemei's agility is unbelievable until now, she doesn't have the slightest awareness of being pregnant.

Another important reason is that he wants to welcome the birth of his child.

This is the first child of his own flesh and blood, future generations and now, and he doesn't want to miss this important moment.