These black powders seemed to weigh a thousand pounds in Jian Chen's fingertips, because in the future, this is a sword, a spear, a sword, a halberd, a Jiuding chime, and a ritual.

The green pendant is the earliest gemstone malachite used by human beings, and these black powders are decomposed copper oxide, which only needs to be reduced by charcoal at high temperature to become copper.

Copper is the earliest metal used by human beings other than meteoric iron, and the melting point of the metal used in bronze alloys is very low, and it can be refined with charcoal.

Jian Chen only remembered that bronze was a copper-tin alloy, and the proportion needed to be explored, but no matter how bad the bronze was, it was always better than stone, after all, that thing could be melted into the shape you wanted, and the temperature required was not high.

Malachite's natural emerald green color is aesthetically pleasing, and it's no surprise that some nearby tribes can easily pick it up and carve it into a pendant.

The pre-technology of smelting malachite requires pottery, brick burning, charcoal burning, and beeswax, which can be completed within a year at the current level of the clansmen, and does not require a high starting point.

And where there is malachite, there must be some open-pit copper veins, and the reserves do not need to be too high, just enough.

Chen Jian touched the black powder, and it was difficult to understand how the first tribe to smelt copper in the primitive era came up with it.

He handed over some of the remaining malachite to the clansmen, told them to put it away, and squeezed himself to the wolfskin.

There were already quite a few men around the wolfskin, interested in bows and arrows, and the man named Birch was holding his slings and wanted to exchange them with the wolfskin.

"Wolfskin, go show it to everyone, shoot something."

Chen Jian patted the wolf skin, and the wolf skin was already itchy, so he came out of the cave surrounded by more than 100 people.

After this time, the magic of the bow and arrow would soon spread to more than a dozen surrounding tribes. The slings have already appeared, and even without Jian Chen, bows and arrows are estimated to appear soon. Now people of all tribes know that this kind of thing is called a bow and arrow, and the right to name is the right to speak, which seems useless in the short term, but is infinitely useful in the long run.

From time to time, the men outside the cave let out bursts of cheers, presumably the wolf's skin had shot something again. The old grandmother told Jian Chen, who was watching the excitement at the entrance of the cave, that all the tribes had already arrived, and now the leaders of the various tribes were surrounding the clay pot.

Jian Chen called a few clansmen to demonstrate the purpose of the clay pot to these people, which caused a commotion. The tribesmen also began to talk to the rest of the tribe about the changes in their lives, and the same rumors about ancestral guidance and black and white bears were also spreading, and each tribe unconsciously took on the role of missionary.

Bows and arrows, clay pots, and their unheard-of lives give the black and white bears and their ancestors a magical aura. The primitive tribes had different understandings. Some people think that it must be the same kind of hair bun and braid as the ancestors that attracted the blessing of the ancestors, so many people asked how to comb the hair bun and braids.

More women stared at the clay pots and bowls in wicker baskets, and Chen Jian cooked some broth for the children and chieftains of various tribes, and put some in the bowls to eat, and those people couldn't take their eyes off it.

Each tribe had a dozen clay bowls and pots, and on average, there was only one for six or seven. There was still a lot left in the wicker basket, and after looking at the women with blank eyes, Jian Chen said: "Our tribe likes all kinds of stones, different stones, as long as we don't have them, we can change them for clay pots and bowls." ”

There really wasn't much to change now, but he wanted to give these tribes a concept of exchange, and by the way, he also needed the rest of the tribes to use their eyes to find all kinds of strange ores.

It's just that after he said this, the rest of the people didn't believe or understand, this kind of stone that can be picked up all over the ground can be exchanged for clay pots and bowls?

After waiting for a long time, people just discussed in a whisper, until an ignorant child brought some small pebbles from outside, put them in front of Jian Chen and asked, "Can this be changed?" ”

"Yes, of course!"

Jian Chen smiled and touched the top of the child's head, took the stone in his hand, and placed it in front of him piece by piece.

"Look, these kinds of stones are the same, so I can only give you one."

He picked out the most rounded one from the wicker basket and handed it to the child, who held it carefully, for fear of falling into pieces, and ran to the side of the clansman and shouted, "Mother, mother! You see! Clay pots! ”

The people gathered on the side couldn't believe that just a few stones that could be found everywhere could be exchanged for clay pots?

Others who reacted a little faster had already rushed outside, looking for stones of different colors. Each stone is a clay pot, and it's on a first-come, first-served basis, and there's no one to come later.

The leaders didn't go down to fight, they thought further: Jian Chen's clan was a man of his word, and what they promised would definitely be fulfilled.

Soon, granite, flint, volcanic rock, shale ...... All kinds of strange stones were placed in front of Chen Jian, and dozens of clay pots and bowls were exchanged for those who brought stones.

Jian Chen carefully identified these stones, most of them were useless. But he believed that it would not be long before the tribes would hunt and gather with their eyes on stones they had never seen before.

The stones may have been clay pots to other tribesmen, but in his eyes they might have been copper and iron, gold and silver, lime and coal......

More and more stones were being sent, and when the people couldn't find new stones, Chen Jian said, "Our tribe is on the other side of the mountain, near the river, and you can see it when you walk along the river." With something good, you can always go to us to change the clay pot and bowl. ”

"What else can I exchange but stones?"

"A lot, the shoulder blades of a deer, all kinds of plants that can be eaten, the cubs of animals, or things that you don't need, you can try to change them."

"In a cave by the river?"

"No, we live in the house, not in the cave."

"What is the house?"

"You'll find out when you go."

Jian Chen left a lot of room for imagination for the rest of the tribes, and also brought them a lot of hope. The cubs who originally felt that they didn't have enough to eat could also change the clay pot, and the originally useless deer shoulder blades could also be exchanged for the clay bowl, and each tribe was recalling what could be exchanged in the cave where they lived, and stared at the clay pot and clay bowl for a long time and couldn't take their eyes off it.

After a long time, a man came around and asked, "We don't want clay pots, can we change bows and arrows?" ”

"Yes! As long as we have, you can all change it. Except for the banners of the ancestors, it is all right. ”

"So, how many bows and arrows can the animal cubs be exchanged for?"

"We can discuss this. You want one for ten, we don't agree. We want to exchange ten for one, and you don't agree. After discussing it until you and I agree, you can change it. ”

"Ten? One? ”

The other party heard many times today, one, two, three, four, all of them were said by Chen Jian's people, but he didn't understand.

Chen Jian called for bluegrass and took out a dozen clay tablets from the wicker basket, which were fired before the rain, and were engraved with one, two, three, four.

Call the chiefs and hold out their fingers to tell them what is one and what is two. Because it is a pictogram, it is easy to understand.

The clay tablets have been fired to be strong, and they are not afraid of fire and water. Each tribe was divided into a piece, and the chiefs carefully put it away, repeating one, two, three, four. This will be useful in the future exchange, the number after ten Chen Jian did not tell them, and there is no need, the exchangeable items that these tribes can find more than ten can only be bone slag.

The people of each tribe counted what their tribe could exchange in one, two, three, and recalled the strange stones they had seen in the hunting stone.

It can be seen that the clay pot is very tempting to them, but there is not much that can be exchanged, and the clay pot sent by Chen Jian is too few.

Seeing that they were still wandering around the clay pots and bowls, Chen Jian was secretly happy in his heart, and asked someone to open another wicker basket, and the contents were also made of acorns before the rain.

The rest of the tribes thought it was still a clay pot, but when they opened it, they found that it was not. Although it looks like a clay pot and bowl, it has no bottom, like a round piece of wood, but the inside is empty.

Each one is the size of a fist, and there are some strange patterns painted on it, which are very cumbersome and you can't tell what they are.

The whole looks beautiful, but it doesn't seem to be of much use, and it will leak when it is filled with water.

Chen Jian held up a pottery ring and said, "We are all the same ancestor, and the guidance of our ancestors also hopes that all our descendants will have clay pots to use." But we didn't take that much, four of you from each tribe, and when the moon is full next time, you can go to our tribe to exchange clay pots. Each can be exchanged for ten clay pots and bowls, and if you don't want them, you can also exchange them with other tribes. Whoever takes this to our clan can change it. ”

Putting these rings into the hands of the rest of the leaders, they rubbed the strange rings and asked incredulously, "Can this be exchanged for a clay pot?" ”

"Of course, stones can be exchanged, so why not?"

"If I exchange my sheep for this thing from another tribe, can I also go to your tribe for clay pots and bowls?"

"Yes."

Jian Chen pretended to unintentionally flick the stone under his feet, making a slight noise. These originally meaningless stones were exchanged for clay pots, and this young man was a man of words, so naturally this strange pottery ring could also be used.

This thing itself has no use value, but Chen Jian used his own clan as a guarantee to give the pottery ring value, which can be regarded as a primitive currency.

For a short period of time, clay pots and bowls can be considered hard currency, especially after they are taught to dig traps with bows and arrows, and within a year there will be a large surplus of food until the animals move away or are scarcely killed.

This kind of pottery ring can only be made with a potter's wheel, and there is no need to fear counterfeiting for a long time. Moreover, a tribe must first ensure food and have enough non-hunting time before it can ponder pottery making. Fishing nets and baskets and the like don't give them, and they don't have time to think about it.

The clay pot may depreciate after it is saturated, and when it depreciates, Chen Jian feels that something better will appear, and there will always be something worth exchanging for them.

Cultivating their sense of exchange first, from bartering to semi-monetary trading, it always takes time. This is not to say that the money is minted and shouted is acceptable to everyone. Before that, it takes a long time to build, this is not a game, it can only be relied on time and credibility.

Dozens of pottery rings are distributed, and it is obvious that some tribes may choose to go to some tribes that have caught too much food to exchange pottery rings for food when they can't catch food, and people within hundreds of miles will subconsciously accept this kind of thing that has no great use value in itself.

This time, the credit was to use the labor of the tribesmen as a reserve, and the clay pots and bowls as the physical standard, but I don't know how long it will take for these people to accept such a strange concept - what seems useless can be exchanged for something very useful to continue the survival of the tribe.

He thinks the group is embracing the concept of money, not the money itself.

Nowadays, bartering is enough, and there is not much trading volume, but looking farther, Chen Jian feels that it is better to prepare in advance.

Malachite has been found, will the new era be far away? What is the difference between a group of tribes with bronze halberds and halberds, but who don't know that one, two, three, four, have no concept of currency, and are still barbarians, and those tribes who use meteoric iron?

Throw a bunch of guns at the primitive tribe, and that's still the tribe; But a country with spears, knives and guns is still civilized.