As if to express the excitement of this historic moment, Gu Guo shouted: "Open the furnace!" ”

More than a dozen pairs of eyes below looked at him blankly, and Hongmei, who was in charge of controlling the copper mouth valve, was also stunned in place, with a question mark on her face.

"Open the furnace? Do you want to knock the stove open? ”

This is a stove that took everyone five days to build! How do you use it once and then smash it open?

Obviously, Hongmei didn't listen to Gu Guo's assignment, and just mechanically blindly followed his arrangement.

For the people, the chemical reaction from ore to metal is too profound to be understood for a while, unlike bows and arrows and pottery.

"Forget it, I'll do it."

Gu Guo took the long-pole pottery hook in Hongmei's hand, stretched out his arm and pulled out the bolt from the copper mouth.

A hot temperature hit his face, and fiery red copper began to flow out of the deflector trough.

The liquid level in the mold gradually rose, and when it was close to the top of the mold, Gu Guo put the bolt back, and the copper liquid was cut off.

The copper metal smelted from the first ore was bound to be crafted into a variety of much-needed tools.

The first to be born was a hammerhead.

The hardness of elemental copper is relatively low, and it cannot be used to make sharp weapons.

Although the copper water smelted by Gu Guo using the soil method contains impurities such as lead and tin, the content does not reach the proportion of bronze, and the hardness may only be a little higher than that of pure copper.

So after thinking about it again and again, he decided to use the first furnace of copper water to make a few more hammers to lay the foundation for the forging of bronze utensils in the future.

The molds are made of clay, and the three cylindrical hammerhead molds are all filled with copper water. Gu Guo glanced at the copper kiln from the observation hole and found that there was still a small part of copper water at the bottom, and he decided to use the last part of the copper water to create a pair of production tongs.

Don't look at Gu Guoguo's cousin, sister, and two uncles, it seems that the fertility rate of the elders is very high, but there are still many pregnant women who die in childbirth in places where he can't see.

On the earth in the previous life, before the birth forceps were invented by Chamburence, pregnant women with small pelvic bones were likely to die of both adults and children due to dystocia, and the appearance of forceps could definitely save countless lives in this era.

Seeing the juice flowing from the stove, the clansmen stretched their necks one by one to drill into the liquid outlet, and looked at Gu Guo with big eyes to explain.

"It's copper!" Gu Guo pointed to the row of three hammer heads, as well as two copper bars that had not yet cooled, and said, "Copper metal can be smelted from copper ore, and it is more durable to use it as a tool than stone!" ”

Standing at the outermost part of the crowd, Rika stroked the wall of the furnace with her hand, and even though it was separated by four layers of clay bricks, there was still a trace of temperature transmitted to her palm.

"Goo, why don't you make this into an axe?"

Rika asked, seeing that the juice in the clay mold had begun to solidify, and the purple-red color of the morning sun was appearing in front of the people.

"Copper is softer than a stone for a stone axe, and it cannot cut wood."

"But it's more durable than stone, which breaks when you're unlucky enough to cut down a tree, but copper doesn't break."

"So I made the copper into a hammer, and the wood went through the hole in the middle, so that you don't have to take a big stone and stake it when you build a house."

Gu Guo taught the clansmen how to use the copper hammer word by word, and after the copper in the mold cooled, he picked up one of them and smashed the clay mold, leaving behind the purple-red copper hammer head.

He inserted the sharpened wooden handle into the reserved hole, placed it on the stone and struck it hard, and then hammered it at the stone under his feet!

The stones shattered in response, and there were a few small pits on the surface of the copper hammer, and small stones were embedded in them, which seemed to be much harder than expected.

The onlookers exclaimed in amazement, and the camelina took the hammer, took it in his hand, and waved it, and smashed it down when he saw a hard clod of earth.

The clods of earth were crushed into powder, and the copper hammer was unharmed.

She raised the hammer high above her head and roared.

"Copper!"

The tribesmen imagined the use of the copper hammer, and the atmosphere was also stirred up by the roar of the camelina, and they all raised their hands and shouted in unison.

"Copper!"

"Copper!"

"Copper!"

The clansmen standing in the distance looked at this group of dancing people, and thought to themselves, it must have been Gugu who had made something new.

While the furnace temperature was still there, Gu Guo poured the limestone into the feeding port, and the slag with a lower melting point melted into a liquid state, which was mixed with the copper liquid remaining on the furnace wall at the bottom.

Although the slag may contain metals such as gold and silver, it cannot be extracted under the current conditions, so it has to be piled aside as scrap.

In fact, copper smelting is not a furnace to burn, but to operate continuously, so that the furnace is kept at a high temperature, and there is no need to waste charcoal every time it is reheated.

As a novice in copper smelting, Gu Guo naturally understood the truth, and only a quarter of the more than a ton of ore brought back and the pine nuts were transported, and about 50 catties of copper were produced.

It is estimated that if all the ore is smelted, it will be lucky to produce more than 200 catties, and of course, the annual copper output of the entire tribe is limited to this.

In this era, industry is not something that everyone can afford, and Gu Guo has made a bunch of epoch-making products, which can only pull the level of science and technology to the threshold of the Bronze Age.

After that, there was a shortage of people and food.

Striking while the iron was hot, the furnace temperature had not yet dropped, and Gu Guo led the clansmen to refine the remaining ores together.

When he opened the system panel, he found that his civilization level was still Neolithic, but the contribution points had increased by a lot.

"Name: Gu Guo

Civilization Contribution Points: 586

Civilization: Late Neolithic

Unlocked Technologies: Pottery (36), Salt (12), Bow and Arrow (108), Net (33), Pottery (850), House (135), Bronze (400)"

The remarks on the back of the technology have changed from the Neolithic period to a few numbers, Gu Guo calculated it, and found that it was the contribution point obtained by this technology.

Contribution points break through the 500 mark, and it is not a dream to be 1,000 again.

Next time, he decided to exchange his mineralogy knowledge, otherwise he wouldn't be able to recognize the entire mine in front of him, and it would be a big loss.

With the first experience, the people were not proficient in the operation steps, but they already knew what they had to do.

The copper water that flowed from the furnace was the greatest reward for their work.

The white smoke of the copper kiln rose from day to night, and under the reddish moonlight, the clansmen who had already changed two rounds drew out the last milliliter of copper juice.

Looking at the various clay pots arranged in a row, as well as the copper ingots in the clay pots, Gu felt indescribable happiness in his heart. The final beneficiary of all the fruits of the people's labor will be themselves.

The highlight moment of production is over, and all the preparations and accumulations in the past two months have all turned into pieces of copper ingots. Gu Guo was like a liver for hundreds of hours of playing, and finally finished the boss and completed the phased goal of copper smelting.

Copper has already appeared, will the age of bronze be far away?