The living environment of the Jia tribe is very special.

In the valley, near the foot of the mountain, there is a narrow vertical natural rock crack, which forms two stone hall-like structures, one large and one small, and there are also stalactites and spring drippings on the cave wall. The men, women, young and old in the tribe have a total of 70 or 80 people. A very standard small tribe is divided into two families, occupying a cave, and living half a group of living together.

Relatively speaking, this is the safest cave that Xu Chen has visited so many tribes and lives in. It is almost a fully enclosed cave, not afraid of wind and rain, and it is even warm in winter and cool in summer.

However, compared with the family's population, this stone cave seems a little smaller. Men, women, young and old in the two families live very crowded. Apart from the fire pit, the stone nests are densely packed, and there is almost no place to settle down, because they are not ventilated and the smell is even worse.

In order to improve their living environment, they built a circular stilt house on the edge of the woods at the foot of the mountain this year.

This stilt house is built with very original characteristics. The wooden branches and sticks are horizontal and vertical, full of the aura of prehistoric times, like moving a huge bird's nest to the ground.

After walking in, the space and structure inside were also very rough and barbaric. The wood was built with erratic and erect, and the bundled nests were paved with dead grass, branches and animal skins everywhere. The situation was so spectacular that Xu Chen was amazed.

This is a building full of natural and abstract styles.

It is completely different from the stilt house style that Xu Chen helped build and teach at the Thunder Clan.

But Xu Chen was curious and amazed at the same time, and was also very pleased to build this house after only seeing it once.

Although it is ugly, it has to be said that these savages are full of enthusiasm and desire to learn and innovate.

This strange stilt house with a mixed structure like a honeycomb and a bird's nest is very in line with the atmosphere of this era. It is obviously built by savages. This style is so civilized that people can't learn it even if they want to.

At least after visiting the clan leader of the Jia clan, men, women, and young, Xu Chen had to admit that such a house would never be built, and this brain-burning structure alone could make his super CPU smoke and crash.

However, this time Xu Chen came to the Jia tribe not to see their dark building with a prehistoric style, but to inquire about the whereabouts of lead ore.

The clan leader of the Jia clan also knew the purpose of Xu Chen coming. After visiting their new original style mixed-match house, he asked someone to lift several large baskets of stones.

There are white lead ore and galena inside, which are similar to those who were brought to the Ba people last time, but there are only more.

As for other ores and various colorful agate amber jade collected as gems, Xu Chen didn't care too much. After a rough look, he found several large pieces of blood stones.

Strictly speaking, chicken blood stone is not a gem because it belongs to a mixed polymer rock with complex composition, including different minerals such as quartz, chalcedony, magnetite, kaolinite, etc. The red part is mainly cinnabar, that is, mercury sulfide. Because cinnabar is distributed in stripes or sheets, it causes red patches like chicken blood to appear on these stones, so it is named.

The reason why bloodstone later became a precious stone was mainly because the rise of seal culture gradually attracted the love of the cultural class.

But at present, in Xu Chen's eyes, he is not as good as flint. At least flint can be used to build stone tools and even make tools for drilling wood to make fire, but these stone birds are not used.

Seeing that Xu Chen seemed not interested in these gems, the clan leader of the Jia clan quickly asked someone to lift another thing out.

Xu Chen was stunned when he saw this thing.

This is a huge tooth with a yellow surface and a length of at least two meters. It bent into a very large curve, and the base of the tooth is at least the thickness of the thigh.

Looking at this huge tooth, an animal's shadow popped up almost at the same time in Xu Chen's mind: an elephant.

But soon this image was overturned, and two more ancient and huge creatures emerged: the mammoth.

Although elephants and mammoths are the same species, just like Westerners and Easterners, they are definitely close relatives, but there is still a big difference between mammoths and elephants, that is, mammoths are larger in size and have thicker, longer and curved teeth than elephants.

Xu Chen's geology major overlaps with archaeology in many aspects, and paleontological fossils are also a very important category of geological and mineral exploration.

In fact, mammoths, as a huge genus of the Elephant Family, were once widely distributed on the earth and had many different populations. The mammoths that are usually called woolly mammoths, with huge size and long hair. They are also called wool elephants, which mainly live in cold areas.

But mammoths are not only woolly mammoths, but also prairie mammoths and southern mammoths.

The last mammoth beasts were extinct around 1,700 BC and ran through the Paleolithic Age, Neolithic Age and the Early Bronze Period of human civilization. That is to say, the last mammoth extinction was around the early Shang Dynasty.

At that time, there were not only elephants, but also mammoths in China.

Mammoths, like the extinction of a large number of other animals, are inseparable from human activities.

From ancient times to the Shang and Zhou dynasties, humans have been hunting large-scale herbivorous giant beasts such as wild elephants and mammoths.

At present, this human being, who is still in the matriarchal clan stage of the Stone Age, happens to be in an alternating period of rise and demise with the mammoth.

This huge mammoth ivory is extremely huge. It must be an adult beast. I just don’t know where this thing came from. Is there a mammoth near the Jia tribe?

Xu Chen was both surprised and happy.

After two lifetimes, he felt that he had finally had the opportunity to see this legendary prehistoric beast.

"Where did this tooth come from?"

Xu Chen squatted in front of this huge animal tooth, stroked his cold and smooth tip with his hands and asked excitedly.

“Kugouga!”

The hunter leader of the Jia clan quickly pointed to Dongfang and answered.

Xu Chen suddenly became interested.

The main witness of his visit this time was that he planned to go to the Kugou tribe to find lead ore. It just so happened that the mammoth ivory was also brought from them, so he could go and inquire about the whereabouts of the mammoth.

The extinction of mammoths has a lot to do with humans’ access to food.

If humans could directly enter large-scale farming and animal husbandry civilization from the Paleolithic Age and there would be no strong demand for wild meat, this prehistoric beast would have probably not become extinct so early.

Of course, he now knows nothing about the living areas of mammoths and even elephants, and perhaps the ivory comes from a more distant place.

More likely, the ivory was picked up.

But in any case, the range of activities of primitive people in this era is very limited. Since this mammoth ivory appears in the Jia tribe, the mammoth will not be too far from the Jia tribe. Even the mammoth that passes by or migrates and dies, it means that this area belongs to the range of activities of the mammoth and may have a chance to see it soon.

With great excitement and joy, Xu Chen asked in detail about the distribution of some tribes near the Jia tribe. He learned that the Kugou tribe was just one day east, and the distance was about fifty miles. Therefore, Xu Chen decided to go to see the Kugou Alliance and then inquire carefully.

For the next half day, Xu Chen and a large group of people stationed in the Jia tribe, giving some constructive guidance on their building of houses and burning wasteland. Under the guidance of the Jia tribe hunter guide, he conducted a brief investigation of some nearby mountains and rivers, and added the landform of the Jia tribe area to the map, making his kingdom territory map complete again.

Of course, the harvest was not only that, he actually found tung trees in the local area, which made him very happy.

Although it was winter and the leaves of the tung tree were not easy to recognize after falling leaves, when a large group of people were wandering around the hillside, some Ba hunters found that a tree was full of fruits. They picked it up and were curious to taste it, but they were grabbed by a group of terrified hunters of the Jia tribe. They said in horror that the fruit was poisonous and would die if eaten.

Xu Chen was already cursing this guy with a dark face. He didn't eat the fruits and animals on the ground, so he obviously couldn't eat them. Otherwise, he would have been completely damaged by the birds and animals and could still wait until winter to pick them up. Therefore, the safety awareness of survival in the wild needs to be strengthened.

However, after he scolded him, he picked up a few fruits and looked at them, he was instantly relieved. After peeling them off, he further confirmed his judgment that this was tung tung.

All tung tung is poisonous, and tung tung is the most poisonous. However, this thing is rich in oil and is a very high-quality industrial oil. It is used to make paints that can be waterproof, rust-proof and anti-corrosion.

Before chemical paint was invented, tung oil and raw paint have always been the main protective coatings for various wood and even armor weapons, and were still widely used in the industrial era.

Although it is not very useful at the moment, if you can really find a way to squeeze out tung oil, it is still of great value. At least the fishing net after soaking with tung oil will be stronger and durable. In addition, the armor and leather boots will be worn for longer after being treated with tung oil.

But according to the current industrial level, it is not ordinary difficulty to squeeze out tung oil.

However, wealth is accumulated. At least the discovery of tung tung near the gonghuo Brasin is definitely good news and will definitely be of great use in the future.

Therefore, he asked the Jia tribe hunters in detail and learned that there are many poisonous trees in some low hillside areas nearby. Therefore, Xu Chen asked the Jia tribe to help collect more next autumn, so he could get the Gonghuo tribe and the Thunder tribe to exchange pottery and linen for items such as pottery and linen. Of course, the premise is to dig out the tung seeds inside.

The Jia tribe members were overjoyed about Xu Chen's request.

They never thought that this kind of poisonous fruit that even wild beasts could change.

Compared with several tribes of the Ba tribe alliance, these tribes affiliated with the Gonghuo Clan Alliance have developed slowly, and because they are far away from the Gonghuo Basin and are remote, it is even more difficult to obtain urgently needed pottery and linens. Therefore, they are still racking their brains to collect some gems or cross mountains and ridges to exchange lead ore with the Kugou tribe, preparing to bring the Ba tribe to exchange pottery in the spring.

At the Witch Lord Conference last month, they learned that the Hu tribe used some strange-smelling plant seeds collected from the mountains to exchange a large number of pottery and linens and other items, which made other tribes, especially all tribes of the Gonghuo Clan Alliance, envious.

At that time, Xu Chen also claimed that no matter which tribe, as long as it can collect pepper, it can be exchanged with the Ba people, and it is of great value.

It’s a pity that pepper seems to be rarely seen in other places except for the Hu tribe. Anyway, after returning, the clan leader of the Jia tribe led a large group of people to search the hillsides near the valley and found no pepper.

In an era when human activities are relatively independent and isolated, this plant that relies on human power is very regional and is not easy to spread. Unlike fruit plants, they can be transmitted by eating, excretion and transmission. Pepper is basically the same as humans, and all birds and animals do not eat it.

There is no pepper and no other product to replace it. The animal skin is not enough, and the lead ore is not in its own territory. In addition to spending a lot of time and manpower back and forth, the Kugou tribe is not easy to deal with, so the clan tribe has always been very depressed.

I urgently need to find a spice crop similar to pepper to exchange with the Ba people.

And just when they were disappointed, they didn't expect that Xu Chen's visit brought them a huge surprise.

However, as a group of honest savages, the hunters of the clan tribe can still seriously remind that this fruit is extremely poisonous and will kill people after eating it. I hope Xu Chen will be careful and never let the children steal food.

Xu Chen was still very concerned about the kind reminder of the Jia tribe, saying that this seed called tung tung will be of great use in the future. He hopes that they can find and even cultivate and plant them on a large scale, just like farming, they can plant them in large quantities on open hillsides, and the Ba tribe will need as much tung tung tung till they harvest in the future.

The entire Jia clan cheered the sky for the gift that Xu Chen suddenly gave. The clan leader and several leaders were extremely excited, saying that they would definitely plant and harvest tung tung according to Xu Chen's instructions.
Chapter completed!