Yang Li didn't know the name of Dahe, not because he really didn't know.

No geologist can do it as precise as Google Maps, even if it can calculate a more accurate latitude and longitude, but only based on latitude and longitude to report a specific small place name, I'm afraid no one has this ability.

What is certain is that the Great River is part of the Yellow River system, and it will eventually join the Mother River at some point.

If the expansion and development of the tribe is maintained, Yang Li can judge the name of this river in later generations, because if the map is explored to a certain extent, the surrounding terrain and landforms can also be added to the elements of judgment, so as to infer which river it is.

The river from the bay to the Ash Wood tribe is gentle, the river is wide, there are no steep banks, and it is a typical plain landform in the middle and lower reaches of the river, and boats are needed to cross the river.

Yang Li led everyone to cut down the birch trees near the river bank, pulled many vines from the bushes, and spent a day building two rafts to cross the river smoothly.

The rudimentary raft almost fell apart after this trip, so it was simply abandoned.

"Does anyone in our tribe know how to build a ship?" Yang Li asked.

No.

"What about the Greywood Tribe?" Yang Li asked Xiao Xue.

Nor did it.

"And how do you get to the Greenstone Clan...... Or how their people came over. Yang Li wondered, he knew that in ancient times, there were already powerful maritime peoples who could cross the Pacific Ocean with rudimentary ships, and some of the ancestors of the Indians had sailed from Asia.

However, these days, neither the river bay nor the ash wood have the technology to make ships, so how did they communicate in the past.

Everyone stared at each other, and finally gave a unified answer.

Crossing?

Swim.

Well, Yang Li took out his notebook and wrote a memo on it.

After returning to the bay, build a dock on the shore and build a wharf, the cost of river transportation is cheaper, and the speed is faster than land transportation, as long as the right ships are built in the future, the whole river can be under the shadow of its own trading area.

The Greenstone tribe is located on the north bank of the river, in the middle of the line between the riverbend and the graywood tribe, according to Huya, this settlement is closer to the riverbend, and when the sky is clear, you can see the greenstone tribe settlement from the hillside of the riverbend.

The high ground where the Greenstone tribe is located is east-west, high in the east and low in the west, and a cliff about thirty meters long in the east, forming a small stretch of heaven, which is the safest position in the entire settlement and the location of the greenstone chieftain's shack.

To the west of the cliff, the terrain is gently lowered, and the houses of the other inhabitants of the Greenstone tribe are scattered on this gentle slope.

Like most settlements, the entire settlement was surrounded by a low wooden fence to protect against wild beasts, and a large bonfire burned in the middle of the settlement.

Of course, there are differences.

Yang Li and his party came from the east, just facing the cliff, and the buildings at the bottom of the cliff were in full view.

A hole was opened under the cliff, and a wooden frame was built at the entrance of the cave to protect against rain and strengthen the earth and stone structure, and the shelves were covered with hay.

At the entrance of the cave are two wheel-drawn cart-like tools, very primitive and rudimentary, but there are wheels with wooden planks underneath, and some stones scattered in the body.

Getting closer, those stones can be seen more clearly, and at that moment, Yang Jiao suddenly felt his heart being clenched by a big hand, and he jumped a few times, and blood gushed up his head.

The job of distinguishing ores, Yang Li couldn't be better, the book in Pudi has not been taught, this kid can recognize more than ninety percent of the stones in the laboratory at a glance, and the ores in front of him show a translucent glass luster, and there is a dazzling green distributed on it, which is a typical malachite, that is, an ore after the transformation of azurite.

Copper ore is the decisive substance to enter the Bronze Age, with it, bronze farming tools will be developed, productivity can be thrown off wooden farming tools several times more than ten times, assuming that a person can reclaim half an acre of land for farming, then now can reclaim three acres of land or even more, which is very helpful for the expansion of population and the division of labor in social occupations.

At the same time, the bronze weapon will completely crush the stone spear and stone axe.

The current obsidian knives and flint knives can only be as long as daggers, and there are helpless reasons, because the stone itself is relatively brittle, and as soon as the length goes up, it is easy to break, and it may become two halves when it falls to the ground.

Bronze, on the other hand, has greater toughness and hardness, and while it can't be made to the length of an iron longsword, the short sword and spearhead are enough to meet the needs of the legion in battle.

Yang Li stretched out his hand and pulled the ore in the small cart, like a treasure.

"What are you doing, you foreigner!" A loud shout suddenly came from the entrance of the mine, and I saw a medium-sized bearded man coming out of it, holding a stone hammer in his hand, shouting at Yang Li.

Well, it seems that the ore has an owner, Yang Jiao put down the stone in his hand and asked, "Are you mining here?" Do you sell these ores? ”

"Not for sale!"

Yang Li didn't expect the beard to refuse so quickly, and he couldn't help but feel apprehensive, thinking that this settlement had mastered the smelting technology of copper and entered the Bronze Age in advance?

But it's impossible, if the bronze has already been used by them, then under the crushing of technology, where will the surrounding small tribes still survive, most of them will be conquered or annexed.

Yang Jiao hesitated for a moment, took out a slightly larger pottery bowl, blew off the dust on it, polished it with animal skins, and then shook it in front of the bearded man: "As you can see, we are merchants of the Hewan tribe, and we came here not only to make friends with the Greenstone tribe, but also for trade." ”

The beard nodded solemnly: "Okay, the god of the mountains blesses, and the Greenstone tribe welcomes you." ”

Since they are all welcome, why are they not allowed to trade copper ore, Yang Jiao must ask to understand, so he pointed to the small cart and said: "These stones look very beautiful, I am willing to exchange them for pottery, is it okay?" ”

The beard hesitated for a while: "Who doesn't want pottery, you go to the settlement now and shout, even if it is salt and seeds, everyone will take them out and exchange them, but these stones, it really can't work." ”

"Why?" Yang Jiao made a very regretful expression, "It's not a secret, I like to collect beautiful stones the most, I have found a room full of pebbles in the river beach, but the green stones like you here, or the first time I have seen them in my life, the first time I saw them, I felt that these stones had special magic, big brother, can you imagine!" ”

"Of course, we call it the Heart of the Mountains, and it's hard to find anywhere else," pride was written on the bearded face, "and our leader uses them to carve ritual vessels for the worship of the mountain gods, offering the highest respect to our entire Greenstone tribe." ”

I wiped it, and the good copper ore was sacrificed by you, it's really a tyrannical thing!

Yang Li scolded in his heart, but his face was full of smiles, Yulia got along these days, where did she not know Yang Li's thoughts, so she assisted on the side, not only did our caravan leader take a fancy to this stone, but I, Yulia, also liked it very much - the god of the mountains is the greatest! I want stones!

Go, go, what are you mixed with?

Yang Li pushed Mao Mei aside, and whispered to the beard, only saying that the river bay has not been favored by the god of the mountains, maybe it is the reason why there is no such stone, I Yang said that I have to change it with you this time, even if it is a pottery one-to-one, I have to replace a few pieces back.

Where could the beard resist this posture, he was stunned for a moment, and his eyes were full of tears of emotion.

"The god of the mountains shines in all directions, although the leader strictly forbids trading the heart of the mountain range to outsiders, but out of respect for the gods, I, the mountain clan, will privately give you this batch of ore!" The beard wiped his tears while hugging Yang Li's shoulder, crying silently.

"Dude!"

"Dude!"

The two looked at each other speechlessly, silent for a long time, Yang Li suddenly shook off Lieshan's hand, and said awe-inspiringly: "Brother Tai, what are these words, how can I, Yang Li, be such a greedy and forgetful person, I can't ask for this ore." ”

"No, no, no, you have to take it!"

Yang Jiao sighed heavily: "I want to meet your great leader and express my admiration to him...... Well, it would be perfect if he could give me the power to open up the ore exchange, then we can trade for a long time and let the light of the mountain god shine on other lands. ”

The beard slapped his chest loudly: "I can see at a glance that my brother is a frank man, my Lieshan clan has dug the heart of the mountain range for half a lifetime, and he can be regarded as a person who can speak in the Greenrock tribe, so follow me, I will take you to meet the leader of Greenrock!" ”

The name of the Green Rock clan met everyone in his leader's hut, and the Lieshan clan personally introduced him to explain Yang Jiao's intentions.

He was a thin middle-aged man, shirtless, with a few necklaces around his neck that were perforated and polished by the bones of unknown creatures, which could hang down to his navel, and with the sparse beard and expressionless brown face, coupled with the light of the fire in the house, it looked a little gloomy.

The leader didn't say much, and after listening to what the Lieshan clan had to say, he left his seat and paced back and forth in the shack, the corners of which were filled with copper ore carved in the shape of strange beasts, most of which were in the shape of ancient pigs.

After thinking for a while, he beckoned the Lieshan clan to call over, and asked what he was talking about, during which his eyes kept scanning back and forth on Yang Jiao and the others, but he stayed a little more on Huya.

After a few moments, he sat down panting, and he didn't seem to be in good shape.

Lieshan relayed the meaning of the leader of the greenstone to everyone, and he learned that Yang Li had a pair of huge pig fangs in his hands, which belonged to the famous bow-jawed pig iron mane in the wasteland, if this pair of fangs were used to decorate the leader's shack, the god of the mountain must be very happy, so the exchange of copper ore, no problem, but to use the iron mane of the pig's tooth.

That's a good feeling, if you can get a batch of ore and go back and successfully refine bronze, pig's teeth are a ball.

Yang Jiao was about to nod in agreement, but was suddenly stopped by Xue.

The boy asked, "If we come back in the future, what will we exchange for the heart of the mountain?" ”

Although Xiao Xue is sometimes full of spirit, his mind is active, in fact, most of the hunters who have worked hard in the wasteland these years have a high IQ, of course, we must exclude Huya, an outlier who can survive by muscles.

Yes, the Greenstone Chief's answer actually meant two things.

First of all, he still does not accept the exchange of regular goods for ore; Secondly, he only needs the giant fangs of the arch-jawed pig to exchange.

Isn't this a one-shot deal, what I want is a long-term trade route.

No, you can't say yes.

But no matter how Yang Jiao negotiated with the leader of the green rock, the half-dead guy refused to let go, and even the Lieshan clan couldn't stand it, so he persuaded each other, but it still didn't have half a point.

The Lieshan clan secretly gave Yang Jiao a look, meaning that I will send you some mountain hearts, so don't toss.

Yang Li felt powerless, when he encountered this kind of tribe shrouded in divine beliefs, the real wealth and goods were not much lethal, maybe he needed to find another way.