The treatment of a group of people in the sheep's teeth is very simple - the labor transformation of the manure. When did you do enough 133 pottery coins, and when did you put them back.

Gu Guo calculated that according to the current productivity, under the condition of having three meals a day, the value of these pottery coins can allow these dozen people to work for seven days.

Twenty tons of manure was enough for them to carry it for a week.

And he also asked the leading Yangya to draw a person as a guide, led by Sang, and took a few of the most capable clansmen such as pigskins to go to the tribe of Yangya to warn, and of course, there was also the task of finding out information.

A few people drifted downstream in a birch bark boat, and the seven-day journey could be shortened to three days (the journey was confessed), and it would not take more than ten days to go back and forth.

The house where Yangya and the others spent the night was turned upside down by Gu Guo and others, and only some animal skins and stones were found. Looking at the pile of stones tightly wrapped in animal skins, the sheep's teeth couldn't come out of their mouths.

So, in front of everyone, Gu Guo opened the animal skin bag and counted the number of stones one by one, as if he was afraid that the people of the sheep's tooth would not know what kind of stone it was.

"Take away the pile!"

As soon as he waved his hand, the clansmen applauded, just in time for someone to do this work that no one was willing to do.

Under the supervision of Hua and Yu, the group of Yangya honestly wielded the stone tools in their hands, scooped the feces from the public toilet into baskets one by one, and then transported them outside the city by wheelbarrow.

In order to prevent this group of people from rebelling, Gu Guo could only hide the bronze tools.

On the other side, in a relatively flat place on the bank of the Tao River, Gu Guo began to erect wooden frames for shipbuilding here.

The birch bark boats began to be unable to meet the long-distance transportation of the tribesmen, and people could not stay overnight on the birch bark boats, so they still needed multiple birch bark boats to travel together on the overnight journey.

Besides, there must be more advanced groups like the Yangya tribe down the river, and Gu Guo didn't want to be besieged by a civilization that also held bronze tools without knowing it.

Anyone who has played strategy games knows that the sooner the fog of war is lifted, the better it will be for you.

The Stone Age tribes lived along the river, and even if they developed into the Iron Age, they still could not get rid of the dependence of agriculture on the river.

Gu Guo felt that he should not be unlucky enough that he was still playing with stone tools on his side, and there was a civilization that played with arquebuses thousands of miles away. The Pacific island on Earth, where World War II was fought on the outside but stone tribes on the inside, was just one example.

Under Gu Guo's command, the keel of the sailboat has been spliced together, and inland river navigation does not need too much tonnage, plus Gu Guo's tribe is so small, building a dhow more than ten meters long is already the limit.

The surrounding forests have not been destroyed by industry, and there are dozens or hundreds of years of camphor and nanmu everywhere, and these trees that are one or twenty meters high can not last more than half a day under the ravages of bronze saws before collapsing with a bang.

The towering trunk of the tree, which could only be admired in the eyes of the clansmen, fell under their bronze weapons at this time.

Everyone knew nothing about the construction of a sailboat, only a glimpse of the structure drawn by Gu Guo on the wooden board, and after Gu Guo explained in detail for two nights, the group of shipbuilders who had temporarily pulled up finally understood this thing that was much larger than a birch bark boat and began to erect the keel.

Since it was the first time it was built, Gu Guo had no experience, so he did not take the liberty of adopting the flying scissor bow that appeared in the 19th century, but borrowed the style from a certain animation of the structure of a sailing ship that he had seen, which seemed to be called a lucky boat.

A group of people tinkered for half a month, and finally finished splicing the bottom keel.

As for the completion of parts such as ribs and side keels, it will be at least until this winter.

Gu Guo assigned several clansmen to build sailboats, and Lihua and the others also started to burn a little bronze nail for backup.

Sang had already returned, bringing back some fairly favorable news.

First of all, the number of people in the Yangya tribe was smaller than on his side, but there were also 192 people, which was comparable to Gu Guo's estimate. Secondly, although this tribe did not have bows and arrows, they did have spear throwers, which were tools to extend people's arms, and the only thing that was more advanced than their own side was pottery.

Gu Sang described that most of the pottery of the Yangya tribe is black, and although there is no glaze, the production process is hundreds of years ahead of his side.

Even the best pottery made from red plum firing is not comparable.

This reminded Gu Guo of the black pottery excavated by Longshan and Liangzhu in his previous life, and it seemed that there was a person next to Yangya who was called this name.

The summary of all this comes from the pottery bowl with a wall thickness of less than two millimeters brought back by Sang, and the bottom of this pottery bowl actually has a relief pattern.

"Unbelievable."

......

After a week's busy work, Yangya and the others had emptied all the feces in the public toilet, and at this time they were piled up twenty meters north of the city wall, a hundred meters away from the nearest house where the clansmen lived, and the stench produced by the fermentation of the compost was not smelled.

As for using this bit of fecal nitrate to make black powder, it is better to use it as fertilizer than to get a few artillery battles to listen to the sound.

The first generation of wild wheat has matured, and the number of broken ears is much smaller than that of wild picking. But since these wheats are all planted together, even if they are self-pollinated, Gu Guo is not 100% sure that these harvested seeds do not have the gene for broken ears.

At this time, he was planting the second generation of wild wheat in the field, stripping off those varieties that had grown wildly after fertilization, leaving only the seeds with full ears, and the amount that Gu Guo had in hand was not even as much as the first time he planted, which made him feel a little depressed.

It seems that domesticating crops is a very difficult task.

At the same time, he noticed that among the food that the women used to gather was a potato-like tuber, with a greenish-yellow skin and a thumb-thick skin.

The simple botanical knowledge had already been digested by Gu Guo, and now he realized that it was not enough to simply cultivate only one crop. In the past, he fell into a misunderstanding of thinking, and was led astray by the thinking of the protagonist in those novels in his previous life who only planted rice and wheat.

In order to enrich the variety of crops and improve the resistance of future crops to pests and diseases, Gu Guo collected all the food that could be collected during this time.

It's like moving all the berry bushes to your home in a game of Don't Starve.

He set aside a large plot of land inside the city walls for growing these crops.

"I hope we can get a result before winter......"

Looking at the various plants planted in the nearly 100 square meters of land, Gu Guo said to himself.

As for the Yangya tribe, although their priests and clansmen were arrested by Gu Guo and took out dung for a few days, they also opened up trade joints with them at this time. In this era, as long as there is no bloody conflict, there will be no endless blood feud.

Gu Guo adopted a soft policy towards the Xiongnu in the early Han Dynasty, and after receiving a wheelbarrow from Gu Guo, Yangya readily agreed to the request to trade with him.

Gu Guo believed that as long as his tribe always maintained its technological leadership over the Yangya tribe, under the impact of thought and writing, the Yangya tribe would be naturalized by himself sooner or later.