Chapter 560: Knowledge from life

The firewood came and lit a flame in a room in the slave courtyard.
Han Cheng picked up the two smallest pieces from the rubble and threw them into the fire.
Under the gaze of everyone, with little effort, the two green stones began to change color and turned black.
After it burned for a while, Han Cheng started to pull the two small black stones out with a branch.
The stone burned by the flame became very fragile, and in the process of pulling it, one piece had already cracked.
Han Cheng placed the stick in his hand on the rock that was pulled out and pressed it down, breaking it to pieces without much effort.
After waiting for a while, when the broken stone cooled down, Han Cheng squatted down, pinched a small piece of blackened stone, twisted it with his finger, and turned it into pieces.
Looking at the 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 formed by long-term oxidation in open-air copper mines and seeping to the outside.
Malachite has always been an important basis for people to find copper ore.
The black fines are copper that has been oxidized. If charcoal is used for high-temperature reduction, copper can be obtained.
But he didn't do this, because there was too little malachite.
Han Cheng's actions affected the hearts of everyone around him. When he smiled, everyone who was watching around him also breathed a sigh of relief and became excited.
"A kind of metal can be extracted from this kind of stone. It is not as hard and sharp as iron, but it is just as easy to use."
Han Cheng announced the good news to the people around him.
Copper is soft and not suitable for sharp tools, but it is still very good for blunt tools. After all, it is better for shaping and has toughness that stone does not have.
However, if tin ore and lead ore can be found, the situation can be greatly improved by refining copper-tin or copper-tin alloy.
Because copper-lead or copper-tin alloy is bronze.
Bronze is hard and can be used to forge sharp weapons and farm tools.
Ganjiang, Moxie, these famous swords in history are all bronze swords.
Slashing is of course not as good as the well-made steel knives of later generations, but it also directly proves the feasibility of using bronze to build this kind of equipment under the condition that steel cannot be greatly developed.
Tin ore is relatively easier to solve, because generally tin ore is easily associated with copper ore.
Speaking of it, it makes sense that bronze first appeared in the history of civilization, followed by steel, because the melting point of the metal ore required for bronze is much lower than that of steel.
After Han Cheng announced the news, Wu and others smiled.
The existence of such things as iron knives and axes made them deeply aware of the usefulness of metal tools. Now they heard the gods announce that they could make tools out of this green beautiful stone with another kind of metal. How could they be unhappy? ?
As for what Han Cheng said was not as good as iron, it was ignored by them. As far as they were concerned, it was only metal.
"Where did you get this stone?"
Han Cheng asked the long legs standing not far away.
The long legs would still look a little stunned. In any case, he didn't expect that the stone he used as a talisman could actually extract metal.
He had seen metal, and the black axe carried by the lame carpenter in the tribe was made of metal.
Even though he had seen the lame guy chop down trees with a black axe several times, the long legs were still surprised at the fast speed.
Now that he knows that the amulet he has worn for a long time can extract a metal, how can he not be stunned?
"In... the tribe..."
Long legs slowly tell the origin of malachite in poor Mandarin.
Han Cheng also slowly figured it out.
On a mountain near the Tengsnake tribe, the vegetation grows sparsely. There are some beautiful blue puddles. The long legs picked up a beautiful piece of malachite of a suitable size. After polishing it, it was with a rope and hung. The neck is used as a talisman.
Han Cheng heard another thing in the long-leg talk.
That is, someone in the Teng Snake Tribe once drank the beautiful water, then had a stomachache, and then died.
Since then, they have gained knowledge that the beautiful water in those pits cannot be drunk.
This is the characteristic of the primitive age, and a lot of knowledge is obtained with the death of people.
Han Cheng asked Long Legs why the person wanted to drink the water in the stone pit. The answer was that the water there was as blue as the sky. Some people thought that after drinking it, they could get blessings from the gods.
Han Cheng couldn't help but sniffed. It was really fearless for the ignorant.
When the rain stopped for nearly a day, it was already dark.
The rain stopped, but because it was night and there was no sun rising, the air was still very cold, and it was most comfortable to sleep at night.
Han Cheng didn't have much sleepiness at this time. On the one hand, he slept more during the day, and on the other hand, he was thinking about the surprise news he got today.
There is nowhere to find if you step through the iron shoes. This is the true portrayal of the news about the copper mine.
Looking around for fruitless copper ore, it was actually right under my nose, which was really pleasantly surprised and unexpected.
Han Cheng doesn’t care about the size of the copper mine there, 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 nest of the Tengshe tribe to see what happened to the copper mine, and wander around to see if I can find the traces of the tin mine.
Han Cheng thought about copper mines and copper-related matters ~EbookFREE.me~ made this decision in his heart.
After all, he was a latecomer in the tribe who was more familiar with these things, and he had to go about it.
And he had to set off as soon as possible. On the one hand, he wanted to determine these things as soon as possible, and on the other hand, it would not be long before Bai Xuemei was going to give birth.
He had to do this thing a little bit before Bai Xuemei gave birth, and then return to the tribe from there.
Regardless of the customs of this era, Hancheng had to return to the tribe to guard Bai Xuemei when she was born.
Because this is a woman's most vulnerable moment, it is prone to danger, although Bai Xuemei is not as agile as she is now, and she has no consciousness of a pregnant woman.
Another important reason is that he wants to welcome the birth of his child.
This is his flesh and blood, the first child of the afterlife and now, he does not want to miss this important time.