In the early morning, the pottery is still being fired in the earthen kiln.

"You've worked hard." Su Yu went over to offer condolences. Through the ventilated window, Su Yu saw the orange-red flames and the red-hot pottery burned inside.

"We don't work hard, patriarch, we love this work." Several teenagers saw Su Yu and heard Su Yu's condolences, and smiles immediately appeared on their faces.

Called Su Dachuan, and then brought a few people with backpacks, and then Su Yu took the fishing net to the tributary of the big river that flowed through this plain, and went up the tributary.

The water of the big river is very deep, and the fishing net in Su Yu's hand can't be controlled, so he can only come to the tributary.

Su Yu probed the depth of the river with a branch, about two meters deep.

"Okawa, let's go find a shallow place." Su Yu still felt that the water was a bit deep, and it was not easy to get off the net.

Walking up the river, Su Yu saw a river beach with hard rocks at the bottom of the riverbed.

"Okawa, here." Su Yu ran to the riverbank and found an excellent place to lower the net.

This river is in a relatively flat river beach, the river channel is very narrow, the river depth is very low, Su Yu stood in the river channel is not above his knees, and there are many fish swimming downstream from here.

"Come, let's help together, pull the four corners of the net, and the bottom two corners to the bottom of the water." Although there were stones tied to the two corners under the fishing net, Su Yu still asked someone to fix the bottom for insurance.

"The fish comes in, don't worry about the small fish, don't let the big fish slip away." Su Yu shouted.

"A lot of fish, patriarch, this fishing net is too useful!" Su Dachuan grabbed a fat fish that wanted to slip away, waved his arm, and threw it to the shore, and the clansmen on the shore immediately put the fish in the back basket after seeing it.

"Pull the net!"

With Su Yu's order, the four of them pulled the net forward together.

"Pull to shore." Su Yu was also very excited when he saw the fish in the net.

Finally, the fish pulled up, but ran a lot.

Of course, if there were a little more, Su Yu would be worried that the fishing net would not be able to hold on.

"Congratulations on successfully fishing with a fishing net, unlocking the fishery, and gaining 200 civilization and 10 farming points." The voice of the system sounded in his head, but Su Yu didn't care about it for the time being, but looked at the fish that were caught.

A net of fish filled five back baskets, and there were many kinds of fish, but Su Yu only knew a few, and the rest did not know.

It's not even noon, it looks like there should be a bumper harvest today, Su Yu thought to himself.

Su Yu asked them to carry the fish back first, and then call some people over by the way.

The construction of the tribe's houses is almost complete, so a lot of manpower is also free.

There are so many fish in the river, if you don't catch them, you can waste them.

Net more fish, even if you can't eat it all, you can smoke it into smoked fish and keep it for the winter.

Su Yu and they didn't wait long, the clansmen rushed over, each carrying a basket, more than 20 baskets put on the ground, Su Yu was busy.

After two more nets, Su Yu and the others were also tired and out of breath.

"Come, you also come and learn how to fish, and then it will be your turn."

Four able-bodied clansmen took over the fishing work, while Su Yu was on the sidelines to guide them.

"Yes, that's it...... Then pull it up and you're done. ”

A net of fish came up, was quickly loaded into a basket, and then transported back to the tribe. When the tribesmen saw so much food, their motivation to work suddenly rose.

"You keep working here, and I'll go back to dealing with the fish."

There are a lot of fish transported back, and Su Yu has to deal with them as soon as possible, otherwise they will stink and rot in a few days.

Su Yu summoned the women who were weaving the basket and asked them to stop weaving the basket.

"I need you to deal with these freshly caught fish together, or it will rot."

Su Yu picked up a sharp stone chip and showed them how to deal with the fish, first disemboweling the fish, then removing the internal organs, and then cleaning the fish blood with water.

"You can do one step by yourself, for example, she cuts the fish open, you gut the fish, and the other cleans the blood."

Su Yu taught them the concept of the assembly line and divided them into three groups, each responsible for different steps.

This efficiency is very fast, and the processed fish is packed into a clean back basket.

"You guys come with me." Su Yu called a few more people and asked them to collect branches and leaves.

Now in this season, there is hardly any green vegetation in this part of the tribe. In order to be able to emit a lot of smoke and not burn out so quickly after igniting the branches and leaves, Su Yu sprinkled some water on the leaves.

Set up a scaffold, Su Yu used a plant leaf similar to palm leaves to hang the fish through the gills of the fish on the bracket, hung a dozen at a time, and then ignited the soaked leaves underneath, billowing smoke came out from between the leaves, enveloping the fish.

Smoked fish is mainly used to dehydrate the fish, so that it can be better stored and stored for a longer time.

The smoke drifted into the air, and if people from other tribes saw it, they would mistakenly think that the forest was on fire.

Near noon, Su Yu passed by the earthen kiln, the earthen kiln had been extinguished, and Su Tu and they were observing the internal situation of the earthen kiln.

"Patriarch, the fire inside is gone, but it's still hot inside."

"You can take it out when it's not hot at all."

"Patriarch, won't pouring water on it cool down?" Su Tu wondered, in his opinion, if you want to cool down, you can't lower it with water.

"If you pour it with water, the pottery will not be able to stand it and will crack directly, expand and shrink in the heat and cold...... Alas, forget it, you don't understand this yet, you just need to remember that you must wait for the firing pottery to cool down, not with water. ”

Su Yu also wanted to explain the principle of thermal expansion and cold contraction, but after thinking about it carefully, it seemed that they didn't understand it. I can't explain the principle of thermal expansion and contraction, and then explain what air is, and then the periodic table or something. Thinking about it, Su Yu's head was big, and he suddenly stopped the idea of explaining.

"Oh, okay, Patriarch, I remember." Su Tu nodded, anyway, just keep in mind the patriarch's words.

The lunch at noon was all fish, and everyone had a grilled fish, and everyone was very happy to eat, except for Su Yu.

Because he found that the fish didn't taste like anything dry, not even salt. After thinking about it carefully, Su Yu found that he seemed to have not eaten tasteful food for almost ten days.

When it comes to salt, it's an important necessity. It is not only a flavor, but also an essential nutrient for the human body.

"Su Xun, do you know what salt is?" Su Yu asked Su Xun, who was happily nibbling on fish.

"Huh? Patriarch. Salt? We don't have salt in our area, we all rely on drinking animal blood, and if we didn't have salt, we wouldn't necessarily have to hunt. Su Yu stopped chewing and said.

It's time to find salt, usually the intake of salt depends on drinking animal blood, but there is not much salt in animal blood, which can't meet the needs of the clansmen at all, not to mention that Su Yu doesn't want to drink animal blood.