Chapter 546

Xicheng found the blue copper mine very early.

The color of blue copper ore is very bright blue, and there are more beautiful malachite in it. It is very conspicuous. Some tribes in Xicheng like to grind them into pigments and bring them back to Xicheng early.

Since Lanxi copper mine was discovered early, why didn't it start early?

Because this copper mine is not enough.

The hardness of pure copper is not high, so it can't be made into weapons. It has no practical value for primitive people. What has practical value is copper alloy.

For example, brass is an alloy of copper and zinc, and bronze is an alloy of copper and tin. In order to smelt high hardness bronzes, tin ore must be found.

Fortunately, before the winter of last year, chief Youshi finally found the tin ore in the south. This kind of tin ore has obvious characteristics and metallic luster. Ye Xi recognized it at a glance, and happily rewarded chief Youshi with a king's animal nucleus.

After the copper and tin mines have been found, copper smelting can be carried out.

Ye Xi decided to make copper by fire. First of all, he built a carbon kiln.

He led his people to build five huge carbon kilns in the back mountain with stone and cement.

These charcoal kilns are round like yurts. They look naive, but they have a great effect. A steady stream of wood is sent to these kilns, and with white smoke rising from the holes in the kilns, charcoal is also formed in large quantities.

After making charcoal, ye Xi built two smelting furnaces for copper and tin.

Copper and tin ores and charcoal are sent into the furnace, and copper and tin blocks of slag sample are sent out.

These copper blocks and tin blocks are mixed with impurities and need to be further purified. Because of the low melting point of tin, it is easy to purify, but it is difficult to melt copper because of its high melting point.

Ye Xi was in trouble for a while.

Knowing Ye Xi's difficulties, Zhuo enthusiastically wanted to help. Because of its high flame temperature, it could melt copper blocks. However, ye Xi knew that it was not a long-term way to rely on Zhuo, so he refused it without hesitation. He spent several days designing a more scientific large-scale furnace, and tried to build an original large-scale blower to improve the temperature in the furnace.

Finally, copper was purified successfully.

Next, it is very simple to make bronze.

just add tin into pure copper and mix the two thoroughly to get liquid bronze. Then make the mould and pour it directly with liquid bronze.

In fact, although the bronze smelting process mentioned above is simple, it is difficult to operate in practice.

For example, the person in charge of charcoal burning always forgets to hold his breath when taking out the charcoal, causing carbon monoxide poisoning. For example, the crucible in the furnace is too hot to take out, and the hook shaped rod is polished with hard stone tools to solve this problem.

In addition, after several tests, they adjusted the tin content to the most appropriate proportion, which greatly increased the hardness of bronze, but it was still not enough. Their bronze hardness was not comparable to that of Jiugong.

What additional metal is needed to make the bronze harder is a question that needs to be explored.

……

Ye Xixian poured a huge mace with bronze liquid.

This is a heavy bronze mace with sharp spines on its head, which is higher than human beings. Ordinary people will have a lot of difficulty to lift it, but all Xicheng soldiers are crazy.

Because this kind of attack weapon is too in line with the primitive people's aesthetic!

They just like the weapon of direct violence! What kind of Stone Club, stone hammer, fish bone stick is all in front of it, all slag!

In the envious eyes of everyone, he finally got the mace bravely.

From then on, he gave up his original weapon and replaced it with a bronze mace.

When he was hunting, Yong was so high that he swung the bronze mace so high that he smashed the head of the fierce beast with a bang. Then he cracked, and the fierce beast's skull was smashed to pieces. Even the brain inside the skull was pierced by the long thorn on the wolf's tooth stick, so he could not die again.

When you see a ferocious beast, you can bang a stick. If you see a fierce beast, you will give a stick. As long as you don't have a huge body, you can use a stick to deal with it. It's very violent.

Bravely smashed is hearty, joyful extremely, the feeling has never been so cheerful.

Other people were envious and wanted the bronze mace. Ye Xi announced to the crowd: "it's not easy to smelt bronze. A bronze mace needs to be exchanged with a barbarian core or something of equal value."

The rules of Xicheng must be mentioned here.

The hunting team must go to the counting office first to get the harvest. After counting and recording, half of the harvest will be returned to the hunting team, and the other half will be returned to the Xicheng City Treasury.

Ye Xi is the city master of Xi City. He can use the inventory of Xi City freely, even if it is his private Treasury.

Of course, he can't leave all the materials for his own use. Some of the materials need to be distributed to the public kitchen staff, part of the materials to the rear mountain management personnel, some to the baby tower, and part to the farm workersThus, ye Xi couldn't give more benefits to the people who worked in the city.

On the contrary, the soldiers of the hunting team are rich in wealth. When the storage room in the stone house is opened, the skin, the core and the meat of the animals can overflow.

Therefore, ye Xi wanted to find a way to enrich the City Treasury of Xi City.

Now if soldiers want bronzes, they have to exchange them with fierce beast cores

When the bronze industry of Xicheng was in full swing, the soldiers guarding a Zhi in the deep forest suddenly came to Ye Xi's residence and knelt down in front of Ye Xi with shame.

"Lord Xiwu, she is gone!"

Beside the stone table, ye Xi put down the charcoal pen in his hand, and his body was stagnant.

The soldier did not dare to look up and continued: "the white cocoon has not been moving, but this morning it suddenly cracked. Girl a Zhi came out of it She wanted to leave. I, I couldn't stop her. Later, she tied the silk to the tree. Until the soldiers in the shift came, I was put down to report to you. "

Ye Xi was silent for a moment and asked, "which direction is she going?"

The soldier replied, "it's going north."

Ye Xi sighed, stood up and lifted him up. He said, "it's not your fault that you can't see her. Go down and have a good rest. You've been working hard these days."

The soldier flushed with shame.

Ye Xi did not reprimand him, on the contrary, it made him feel worse than scolding him. If he did it again, he would rather have his arm cut off by silk, and he would have to break free to stop ah Zhi.

After the soldiers left, ye Xi watched the fat silkworm in his bedroom. He was silent for a long time, and finally called the Uighur chief.

"Ah Zhi is gone. I don't trust her. You send some stronger Uighur birds to follow her all the way, and report to me whenever there is any situation!"

The Uighur chief took orders: "yes!"

Ye Xi watched the Uighur chief leave before returning to the stone table.

He knew that a Zhi was going to look for the chongliu tribe. It was very dangerous outside. It would be safer for the Uighur birds to follow him.

As for the first silkworm Ye Xi was not sure that it could be transformed into a king of silkworm. He hoped that the feeling of dying would be more painful. This kind of pain might completely destroy a Zhi. So he decided not to tell her after a long time's consideration.

As a matter of fact, it's better for a Zhi to leave. Now she is full of hatred and will not be happy to stay in Xicheng. Instead, she can walk outside and relax a little.

However, although the truth is this truth, ye Xi can not help but feel gloomy when he thinks of the naive and brilliant dimple of a Zhi.

After a while, ye Xi, sitting at the stone table, adjusted his mood. He picked up the charcoal pen and continued to write something on the parchment.

"Sand..."

The charcoal pen touched the yellowing parchment.

On a closer look, it is a majestic giant catapult.

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