Everyone feels like they've earned it, and that's the deal. The basis for this deformed deal is because summer has arrived.

The peaches are almost ripe, and the various tubers are also expanding, and they can live by gathering, so these people can learn here for a few days without worrying about the affairs of the clan.

Summer is always easy to pass, but winter is hard. Every tribal leader always sees farther.

This year is a big year, the mountains are full of hazelnut acorns, and there will be no hunger in winter. But their experience has also taught them that a big year must be followed by a small year, and that trees may not bear fruit in the second year.

They have to think about the tribe next winter, so they hope that these people can learn how the Chen Jian tribe lives.

Jian Chen didn't worry about this problem, he didn't prepare for the clan to live on acorns next year, but this winter there will definitely be a lot of greedy wild boars who eat too many acorns and will swell to death.

The food collected was enough, and the other day it rained heavily, the grass river was swollen, and some of the forks of the river that had been dry were also covered with water, and he led his people to block the forks side by side with wooden sticks, and the fish would stay when the water receded. All kinds of grasshoppers and insects, hive bee pupae of earth bees, can be eaten after being fried. With that extra person, it's not a problem at all.

So the next day, after a few more tribesmen wanted to stay for a few days, Chen Jian discussed it with the tribesmen and easily agreed.

All kinds of stones were replaced with clay pots, and it was said that different stones could be changed, but now there are duplicates between them, but Chen Jian still accepted them, telling them to remember these stones, and the same stone will not be changed next time.

Those people felt that next time they might not have any stones to change, and if they wanted to change things, they would have to use something else.

In the course of three or five days, seventy or eighty people came one after another, and there were more or less people from each tribe. Those who come more are one, two, three, or four who learn to understand, and know that there are fewer people and they can't carry them; Those who came less were also replaced with pottery rings, ready to talk about it next time.

As an intermediate product of barter, pottery rings were promoted in the case that most people thought it was a redundant move.

Jian Chen didn't expect currency transactions to occur now, but it was difficult for people to accept currency because it was easy to mint. It will take years, if not decades, for these people to accept the concept of money as a general equivalent.

His appearance only speeds up the process of history, but it cannot control history. History is created by man, and man's mind can only be changed subtly, relying on the development of spontaneous transactions, God knows how many years before the concept of equivalence appears.

The effect now is that these outsiders find Ken strange, but they still accept this method of trading.

After storing the belongings of their respective tribes, they followed Chen Jian and the others with curiosity to try different lives. Since Jian Chen has decided to take these people as the basic plate and the foundation of the Chinese people in the future, of course, he hopes that the more people they have, the better.

And the main purpose of these people is also to eat, so on the first day, Chen Jian asked the women to take them to fish.

He himself led his people to prepare for the future.

Copper ore is a hundred miles away, and it is not far to say that it is not close. In the next two or three years, there are three things that will be most important to the tribe.

Plant, bronze, and destroy the Meteorite Horde.

Chen Jian heard his grandmother talk about migration, his own people migrated from the southeast a few decades ago, and he didn't know what the level of the tribe there was now.

Without him, many years later, when the population grows, they may continue to migrate westward to disperse their lives.

The west side is empty? Or are there other ethnic groups that are not in the same branch as them? This problem is a bit far away, but the meteorite tribe in the northeast is a real threat.

They have simple sponge iron, they have strong and cerebral chiefs, and they can sustain the population of their tribe in the form of tribute.

The more time passes, the more likely they are to find that they are stocked and planted, and the greater the threat.

Once they appeared, they could jump directly to primitive slavery, and the ratio of slaves to slave owners could be slightly higher because of the generation difference in weapons. Their location is to the east, and there must be other tribes in the east, and the technology on their side and the technology on the east side will gradually spread to that side, and it will be troublesome at that time.

To prepare for war, you need enough time off work. Planting can make up for the time problem, simple bronze can increase the efficiency of planting, and conversely, planting can also provide enough time for molten bronze to not hunt for food.

These three things affect each other, the planting has already begun to be prepared, and all that remains is the melting and casting of bronze ware.

How many steps does it take to cast bronze? Ignoring the issue of copper-tin-lead ratio, Chen Jian used to think that it was very simple, nothing more than high-temperature reduction of copper ore and charcoal, and pouring it into the mold.

But when it came time to actually plan to do it, it turned out to be difficult.

Just like teaching Yu Qian'er how to build a house, he also wrote the words copper ore, high temperature, charcoal, and mold on the bark of the tree, and when he expanded it down to see what was needed, he was dumbfounded. What I thought could be completed in four steps, but a large sheet of bark was densely written.

Because of understanding, I am more in awe of the ancients who have just come out of the wilderness to leave all kinds of things for future generations, the things on the bark are too cumbersome, far from being as simple as they think.

Copper mines, once expanded, need to consider the following issues: technological advances in food access to ensure that the people have time to mine; stone tool punching technology, making mills or mortars, smashing copper ore; Wire sand cutting, which is used to process large stones for mortar; Wicker baskets are woven to transport ore.

High temperature, after unfolding, it is necessary to consider: burn bricks to facilitate the stacking out of the kiln room; sufficient bones to facilitate the excavation of kiln pits and clay; The bricklayer technique of the coupon dome can build a dome that does not need support columns, so as to increase the furnace temperature; Charcoal burning, because it is too difficult to chop wood, and charcoal can be smashed to facilitate combustion to raise the temperature; boil salt, which is used to make the skins; Fired pottery, which is used to make pottery rings; Nitrate peels and pottery rings are made into simple blowers.

Charcoal, to consider is to burn bricks and charcoal kiln, this is the least step, but it is also the most difficult to do, the slightest carelessness will collapse and lead to death. There were no slaves yet, and he had to think about his people and his own survival.

To pour the mold, you need to prepare in advance: firing pottery to make a crucible, so that the copper juice that has been melted twice can be put into the high-temperature furnace to melt; Make a long handle and put it on the crucible, wood and stone will not work, the high temperature will burn and shatter, and it is even more death to pinch the crucible empty-handed; Enough beeswax is used to make a wax model, the outside is wrapped in clay and heated, the beeswax melts and drains out to form a hollow structure, and the copper juice is poured into it to form it......

Chen Jian stared at these things on the bark in a daze, appealing all this, and did not consider the most difficult issue of copper-tin ratio. It is difficult for him to imagine how many tribulations the first ancestor to use bronze went through to create such a splendid bronze culture.

Everything that is densely packed, tick what has been done, and draw circles if it has not been done. This is just a theory, and when you actually start doing it, you will encounter all kinds of strange problems.

For example, the coupons for burning charcoal, bricks, and furnaces need to lay bricks and onion kilns, which is the key to considering whether a bricklayer is qualified in the countryside in the previous life. The bricklayer who will not issue coupons is not a good bricklayer, the bricklayer relies on experience and practice, and uses science to push back, which is more troublesome, which he can't do, so he can only explore little by little.

It took a day to dig two kiln pits on the downwind slope of the river outside the village, one for pottery and the other for bricks.

Acorns have begun to use simple tunnels to fire pottery, but the fragmentation rate is still very high, this time using the time of the brick kiln, just to improve.

"Easier said than done......"

Pinching the bark in his hand and looking at the pits that had been dug out, Jian Chen had a nervous mood for the first time, and he knew that this mood would only increase in the future.

With the social division of labor and the progress of science and technology, the days of talking and laughing and strategizing like a god are gone.

The tribesmen were waiting for him, and he silently clenched his fists to cheer himself up, and began to let the tribesmen build the walls around him with mud.

The walls are easy, hanging on the line, pulling the rope, layer by layer, the tribesmen cover the house, and the eyes are still a little accurate.

The wall was quickly finished, and Chen Jian chose a few younger people to follow him, and the rest went to build the wall of another kiln.

Now that the clansmen have gradually begun to take care of their own affairs, considering the need for a professional mason in the future, the selection of this mason must be trained from these few people.

He lifted the stone shovel very heavily, stood on the wall that had been piled up, and laid down the first piece of mud at a slight angle.

The following people carried mud and handed bricks, in an orderly manner. In the era of apprenticeship, these apprentices who handed bricks and mud needed talent and vision to be able to get out of the apprenticeship as quickly as possible, or they could only hand bricks and mud for the rest of their lives.

As an attempt, the dome span of this kiln is not large, just over two meters. Do this well, so that you can try a wider span.

The sticky yellow mud is more or less, and stone chips are stuffed into the cracks, and these mud blanks are squeezed as much as possible, extending upwards little by little.

It's easy to know if it's qualified, because these mud blanks are not glued by yellow mud, so after laying out a few layers with arcs, go up and step on it to see if it will collapse. If it collapses, it proves unreasonable, and it is stuck with mud, so it needs to be dismantled and rebuilt.

In one day, the few clansmen who handed bricks and mud saw Chen Jian's bricks and mud being built and demolished, demolished and rebuilt, tossing back and forth.

The clansmen who built the wall next to them not only finished building, but also began to make bricks with smaller pottery molds, and a lot of them had been dried on the flat ground in the distance.

When Jin Wuxi was hanging, Chen Jian looked at the fruits of his day's labor: zero.

He smiled self-deprecatingly, waved at the clansmen, and said, "Let's disperse, go to the river and line up as usual." ”

Three days in a row, as always.

Most of the foreigners left, they learned what they wanted, and they lived in a place where they had river forks and tree bark, and they could boil oil in jars, and they could marinate meat when they changed salt......

Compared with the fatigue of making bricks and mud in the past few days, they felt that it was better to fish and hunt, and went back with what they thought was enough knowledge, imagining how jubilant the people would be.

There are also some people who have stayed and want to learn and see again, and some people have even liked life here. Although tired, there is a different feeling.

In their opinion, everything is fine, the only thing they can't understand is that Kenichi has been building the mud for several days in a row, and then tearing it down after the foundation is finished......

The onlookers saw a different problem: this tribe could support more than a dozen light and strong people tossing around, which was simply amazing.

His own tribe used to have no time to burn bricks even if their ancestors instructed them to learn to burn bricks. How could you run around for food every day, let alone do something else, let alone toss it productively......