Shugen nodded thoughtfully, beckoned, and was about to take people to the tin mine, but was stopped by Ye Feng.

"You must be very tired after such a long journey, go to the Giant Wood Tribe to rest for one night first, and it's not too late to go tomorrow!"

Hearing this, Shugen turned his head to look at the tired members of the mining team, nodded, and said, "Okay, we'll go back tomorrow!" ”

The night passed quickly, but fortunately, it didn't rain tonight, the tree hole was much drier, and Ye Feng was able to sleep peacefully.

As soon as Ye Feng woke up in the morning, there was no trace of the mining team and the mammoth, and when he asked, he learned that the roots of the tree had taken people out when the sky was just hazy.

"Damn, this kid at the root, workaholic." , Ye Feng muttered in a low voice, originally he wanted to go with him, but now that he has been abandoned, it doesn't matter if he goes or not, anyway, they have a certain amount of experience, and they don't have to worry about anything anymore.

Two days later, the tree roots finally appeared in the Giant Wood Tribe with a full load of people, and after meeting with Ye Feng, Ye Feng did not delay any longer, and after saying goodbye to Bass, he returned to the Xingyue Tribe.

……

The tin ore was quickly smelted into tin ingots and neatly placed in the tribe's storehouse.

Casting a bronze is not something that can be obtained by mixing copper and tin, but it is necessary to achieve the best bronze alloy according to a certain ratio.

Since the tin ore shipped back was only as small as a mammoth, Ye Feng accounted for the majority of copper when he added materials to the furnace.

Then, Ye Feng twitched the improvised improvised bellows, slowly transporting the oxygen needed for fuel in the furnace.

As the temperature of the furnace continued to rise, the flames in the furnace turned from red to yellow, and then from yellow to scorching white, making the boiling heat wave make the onlookers feel as if they were in the dog summer, and had to take a few steps back.

Because this bellows is so simple, it always feels very stuck when twitching, not so smooth, so twitching it is a very physical test.

After a while, Ye Feng was already out of breath, although it was already late autumn, the hot furnace temperature still made him unbearable hot, making him sweat profusely.

Ye Feng really couldn't stand it, so he beckoned and let a clansman take over his work.

It wasn't long, maybe an hour, maybe two hours, and as the furnace door opened, the copper mixed with tin slowly flowed out.

The freshly baked copper water is orange-red and looks like lava from a volcano, slowly flowing out with terrifying heat. After the copper water ran out, Ye Feng motioned to the clansmen to extinguish the copper furnace.

Due to the experimental nature, the mold prepared by Ye Feng this time is actually a long board.

The previous steps are complicated, but at this point, people already know what to do next, and people have experience in smelting tin before.

As the copper water slowly cooled and solidified, the long strips in the mold gradually took shape, and the golden bronze in the mold blinded the eyes of everyone present, shining in the autumn sun.

Seeing this, some people may want to ask, bronze bronze, the name is called like this, why is it still yellow and not golden.

In fact, the color of the bronze is yellow, and in later generations, the unearthed bronzes are all cyan, with a sense of ancient vicissitudes. But it is precisely because of the age that copper reacts with oxygen, carbon dioxide and water in the air to produce a substance called basic copper carbonate.

Ye Feng looked at his masterpiece of labor, and almost didn't treat him as an ordinary pure copper bronze vessel.

Ye Feng used the water-soaked animal skin to gently put the mold into the water tank filled with water, and the moment he just threw it in, the calm cold water instantly boiled, and bursts of white mist rose.

After doing this, Ye Feng crossed his hands on his hips, laughed, and shouted up to the sky: "NND, you have finally brought the tribe into the Bronze Age." ”

The onlookers looked at each other, not knowing what trick Ye Feng was doing, but judging from past experience, he must have mistaken something good that he didn't know, so they all laughed.

After the long board cooled, Ye Feng couldn't wait to take the long strip out of the water tank, and after washing the smoke-blackened stains on the surface, a pale golden bronze ware appeared in Ye Feng's hand.

People looked at the things in Ye Feng's hands blankly, but they felt that they were no different from the pottery they used, so someone walked forward and asked Ye Feng, "Ye Feng, what is this?" ”

Ye Feng smiled and said, "This is called bronze!" ”

"Bronze? It looks exactly like the bronze we use, so what is it for? The man asked, confused.

Ye Feng smiled, didn't answer directly, picked up a stone from the ground, and said, "Stare your eyes wide and see how the bronze is different from the bronze we use." ”

Ye Feng said, raised his right hand holding this long board high, and slashed it fiercely on the stone.

The speed of Ye Feng's downward swing was very fast, and people only felt a flower in front of them, and then they heard a huge movement: "Bell! ”

I saw that the stone was broken into two, and the bronze in Ye Feng's hand was only a little concave.

People were shocked and their eyes widened. You must know that the bronze tools they usually use are so soft that they are reluctant to even cut down trees, not to mention the use of stones by a loser like Ye Feng.

Now the bronze was only slightly wounded, and the poor stone was broken in two.

"Ye Feng, this thing is really good, if it is used to make weapons, wouldn't it be ......", the root of the tree said at this time, his eyes glowing with green, staring at the long board in Ye Feng's hand.

Although this slat, in the eyes of the root of the tree, was completely comparable to the location of the bronze ware, Ye Feng saw the slight cracks on the slat, and concluded: "The hardness is okay, but it is too brittle." ”

Ye Feng used his poor scientific knowledge to roughly estimate one reason: it may be caused by the ratio of copper and tin.

But the problem is that I don't know the best copper-tin ratio for bronzes, but I have to change it, so I have to explore step by step until I find the best ratio.

But at this time, it was not early, so he could only come slowly, and he couldn't be in a hurry, so he opened his mouth and said to everyone: "It's not too early, let's disperse!" I'm cooking myself tonight to celebrate that we've got another artifact! ”

There was a cheer from the crowd, which slowly dispersed.

《》