This time, hundreds of catties of fish were caught, and the men who arrived used wicker to put the fish on their gills and carry them on their backs.

When he arrived at the entrance of the cave, Jian Chen looked at the semi-wild wolves in the distance, whistled, and threw over a few fish to see if they could eat the food they had come from.

Unfortunately, the wolves were still a little wary, and waited until everyone had entered the cave before rushing over and taking the fish away.

The cave was full of fishy smell, but for the people, it was the taste of happiness.

Jian Chen looked at the large pile of fish and wondered how to eat it.

The tribe does not have salt, which is a big problem, and without salt there is no way to store it for a long time.

Look at the sunset, tomorrow should be a good day, but it can be dried fish, but the dried fish without salinization must be stinky.

The old grandmother, however, was not picky about this, and looked at the harvest with a smile, and created a second mural on the stone wall of the cave with charcoal, a black and white bear taught the tribesmen to weave, and then used it to catch fish.

Jian Chen looked at the mural and smiled.

The fire is already there, and the Suiren clan can't be it. However, if the tribe is integrated into the civilization in this area in the future, how can it be mixed with the position in the myth.

The rest of the nearby tribes are all relatives if they go back a hundred or ten years, and I don't know if the same tribe that migrated to other places has developed a different kind of civilization?

In the caves, women continue to weave improvised fiber cloth around the fire, while men use adhesive feather arrows such as pine resin tears.

Jian Chen walked up to his grandmother and wanted to inquire about other tribes nearby.

Every year in late spring and early summer, the tribe would go to a high mountain place, where several tribes would gather and communicate, mainly for the reproduction of the various tribes, and sometimes the tribes from outside would pass through this place.

Listen to the old grandmother, where there are stones to lick and salty earth.

There were about a dozen tribes in the vicinity, all of them about the same in number, and a few tribes had fewer people than their own people. The old grandmother who still uses knotted ropes to remember the exact amount cannot give an absolute concept.

These tribes are all at a similar stage, and each tribe operates within a few tens of kilometers, and it seems that there is no primitive agriculture or livestock breeding.

As for whether there are tribes thousands of miles away that have begun primitive agriculture, it is unknown.

Recalling the way he hunted yesterday, Chen Jian drew a simple sketch on the ground with charcoal.

The tentative direction of the sun rise is east, and there is a small river more than ten meters wide under the mountain of the tribal cave, flowing eastward.

And there is a big river in the place where I hunted yesterday, and it flows in the southeast direction.

It is in a temperate zone with four distinct seasons. The plants are mainly broad-leaved forests and trees, and the land is quite fertile.

Animals have been seen so far, such as leopards, deer, goats, wild boars, wolves, raccoon cats, etc., and the fish in the water include carp, grass carp, and some small fish that cannot be named.

What plants can eat is basically an unknown tuber, and there are many acorns and wild fruits. The changes in the distribution of species make Chen Jian uncertain what the staple food will be in the future. Maybe it's corn-based, as in the previous life, or it may be the original corn and potatoes.

Even if you find it, it's not an overnight thing. The original staple food plants should still be in a wild state - wheat like dog's tail grass, bud rice with six or seven grains, soybeans that are more than a person tall and maybe even silky......

The environment here is humid, and the plants do not use all their nutrients for fruit and reproduction as in some arid regions, and the kind of primitive crops with large and full ears are hard to come by.

"Domestication, Fishing, Hunting, Farming, ......"

Chen Jian wrote six words on the ground with charcoal, muttering about these three magic weapons to ensure the survival of the tribe, and if men want to gain decisive dominance, private ownership and tribal alliances appear, and even develop civilization, these three things must be mastered.

In a tribe that is worried about what to eat tomorrow, it is impossible to have time to figure out the culture.

Now fishing and domestication are the two easiest methods, but farming is the cornerstone of civilization, and I don't want to be the ancestor of a group of tribes wearing salmon skin armor or grazing livestock thousands of years later.

Although it takes some time to cultivate cultivated crops, especially wheat, which is a genetically mutated hexaploid plant with three times more DNA than its ancestors, it will take about a thousand years for it to appear under natural conditions, plus all kinds of coincidences.

But this thing can take a shortcut, if it doesn't work, just get some daylily lily roots and the like to extract colchicine, soak seed shoots and forcibly mutate into polyploid and then artificial selection, you must run in a short time to enter the agricultural era!

Fortunately, the fishing method and bow and arrow invented by themselves can ensure that the tribe does not need to hunt every day, and as for the real fishing nets, they will soon appear.

Thinking of this, he recalled that he was sure that he had seen lilies such as daylily, and he firmly erased the words domestication and fishing, not as a substitute for farming.

When you have enough food to store for these few days, you must find a few days to go down the river, look at the nearby terrain, and find some original crops that can be used by the way, which is a must for future development.

It doesn't matter what the geography and species of this world have become, whether it's corn, potatoes, wheat, buckwheat, beans, rice, millet...... As long as it can be planted, otherwise it will still be a dead end.

In addition, large livestock such as cattle and horses must also be found. In the previous life, the Mesoamerican tribes also developed agriculture, but unfortunately the largest domesticable animal was the alpaca, which is still the same after thousands of years.

And then there's the salt! Salt! Salt!

The old grandmother said that the place where the tribes exchanged was saline, and there might be salt ponds nearby. It must be occupied, and the tribe with the salt pond can become the master of the tribal alliance, and it can also grow in a few years.

The nearby tribes are about the same strength as your own tribes, so you must first annex a few tribes with a smaller population. After the appearance of fishing nets and bows and arrows, the population limit of the tribe can already be increased a little, as for how to annex, Chen Jian already has a few ideas in his heart, but he still needs to observe and observe.

After asking about the time of tribal communication, the old grandmother said that it would be almost when the apricots grew up, that is, about half a month.

While she was thinking about it, Yu Qian'er held two grilled fish, one for her grandmother and the other for Chen Jian.

To Jian Chen's surprise, Yu Qian'er was very smart, but because she usually had too few things to come into contact with, her way of thinking was still at the tribal stage.

"Brother, eat fish."

Her face was still dusty, but her calves and arms were much cleaner because of catching fish.

Jian Chen took the fish and asked her with a smile if she remembered the three numbers last night?

Yu Qian'er nodded happily, and told Chen Jian that there were three little bird chicks in total, found a charcoal, wrote a three on the ground, and drew a little bird chick crookedly behind.

The old grandmother came over and looked down, and thought that this was a good idea, and knew what it was by drawing it on the stone, so she drew a fish.

Bird and fish, these are the first two words to appear in this tribe, Chen Jian drew a bow again, added words such as sun, moon, water and mountain, and called the young people and children in the tribe to come over.

One after another took the trouble to tell them what it was, but fortunately it was pictographic, and it was something that was common.

The pronunciation except for the bow and arrow is in the original tribal language, which is easy to remember, and the simple strokes outline the text very rounded, because it is written on the ground with charcoal, not carved on bamboo with a knife, and it is not so angular.

Let my sister Yu Qian'er teach the children to read and count, don't ask every child to be as smart as Yu Qian'er, how can it be a month.

As for the numbers after three, he was going to think about it again, and everything should be the easiest to understand as the premise.

Four is still four horizontal, five is a bottomless triangle with the shape of a mountain tip, and the palm is like a mountain; Six is similar to the current six, remove the two points below, the top point becomes a vertical, and so on to ten when you draw an X.

The decimal system is inevitable, not because it is used by later generations, but because people have ten fingers and are easy to understand. Now don't expect concepts like zero, it would be enough to make all the people count to ten.

As for octal or hexadecimal, it is a kind of weights and measures, but it is not suitable for children to understand from an early age.

is like a rope, defined as one meter, so it is obviously difficult to divide into ten equal parts in this era, at least Jian Chen thought for a while and didn't figure out how to divide ten equal parts.

It is easier to divide the power of 2 into equal parts, bend the rope and align it is binary, then bend it is four, bend it again is eight, and so on. The weight is the same, the wooden stick balance sand is halved, and it is not for nothing that half a catty is eight taels.

Civilization...... It didn't happen overnight.

Looking at the busy clansmen, looking at the children who were counting one, two, or three in an awkward and trembling tone, looking at the aunts who still hadn't thought of being able to lengthen the wooden sticks to facilitate the warp traction and shuttle, and looking at the uncles who hadn't thought of adding bone needles and beast teeth in front of the feather arrows to increase their power, Jian Chen only felt that there was a long way to go.

"Let's see how long it takes them to think of it."

Yu Yu sighed, the thinking of one person is not civilization, but the thinking of a group of people is civilization.

~~

PS: Speaking of a rope that can be folded and aligned, how can it be divided into tens? How can a scale, a pile of sand, be divided into ten equal parts instead of 2 to the power of the number?