As Chen Mo expected, half of the coal was used, and the items fired were closer to porcelain.

The outside has a smooth glaze with a beautiful texture and a crisp sound when struck.

This can be regarded as porcelain in a primitive society! When the craftsmanship of the back skin is more exquisite, a few more attempts may be able to make real porcelain.

The colored trade squad is back, this time bringing back a dozen male warriors and more than twenty women. After the last seizure turmoil, Chen Mo decided that in the future, the tribe would not trade with those large or giant tribes.

When dozens of warriors come to the tribe to trade, these less powerful tribes will not have the idea of possession of salt, but will only have a good relationship with the tribe of the water army that can make salt.

Since Chen Mo wiped out the Three Alliances of the Dragon Set, the prestige of the Navy's tribe began to show up in the surrounding tribes, and small tribes often came to repay their debts spontaneously.

Because he had made a part of the installment payment when he went out to trade before, when Chen Mo destroyed the reputation of the Three Alliances of the Dragon Trap and spread to their tribe, those small tribes gritted their teeth and quickly made up for the arrears.

The Navy's tribe has also been transformed into a giant tribe of 1,000 people.

Because of the constraints of food and living environment, the population of primitive tribes was very restrictive. Because the tribe has too many people to feed.

Primitive tribes are mainly hunting, but animals are not endless, and they also need a certain growth cycle, and the breeding industry is slowly popularized when the primitive society is close to the slavery period, and the cultivation is also common at the end of the primitive society.

The large population of the water army tribe, thanks to the river not far away, has ensured the food and clothing of Ben recently.

There are a lot of fish in the river and it's huge!

Chen Mo proposed a net for Zhuang, Zhuang tried for a day, formed a rattan net with a small net mouth, fished in the water for the first time, and fished nearly hundreds of catties of fish.

Because of the endless fish, it made up for part of the tribe's food, and also relieved a lot of the burden on the hunting team of Yamato and Hei.

The river is very wide, about 300 meters wide. On the other side of the river, Chen Mo was very curious. But the turbulent river blocked Chen Mo's curiosity many times.

Chen Mo also looked for a place along the river bank that was relatively close to each other and wanted to cross the river, but he lacked tools and had to give up.

If only there was a pontoon bridge.

Building a pontoon bridge on a smooth river may be a try, but building a pontoon bridge on a turbulent river is nothing more than a pipe dream.

The narrowest river is also nearly 200 meters wide, and at 200 meters, birds can fly over, but people can't swim through.

Birds can fly over? Birds? By the way, there is a chirp in the tribe, and now it is so big that it can fly over and tie it to the rattan and swim along the rattan itself!

Chen Mo trotted all the way back to the tribe, found Zhuang who was weaving bamboo baskets, took a little breath, and asked, "Zhuang, are there any rattans that are very tough and light?"

Zhuang put down the half-woven bamboo basket in his hand, thought carefully and replied, "Chief, this is really nothing!"

"Then do you have a way to make the rattan light and strong?" Chen Mo was unwilling to give up.

"Well, it's not!" Zhuang shook his head.

Chen Mo returned to the river again in discouragement, looking at the turbulent river in a daze.

The river is very deep, Chen Mo once let the mammoth go into the river and try to cross the river, but the mammoth only walked out more than 20 meters, and the river water had already submerged its ivory, and the mammoth was almost unable to stand by the turbulent river.

"If you can throw the rattan across the river, let Jiu Jiu tie the rattan to the tree, and then let the skinny clansmen swim along the rattan!" Chen Mo couldn't help but fantasize.

"Why don't you go back and try it with bamboo? Bamboo is tough! Get more bamboos tied together and try it by catapulting? Or make a trebuchet? Just throw more than 200 steps!"

Chen Mo returned to the tribe again to find Zhuang and told Zhuang what he thought.

"Chief, I don't know if this kind of operation can work!" Zhuang was a little worried, but in fact, he didn't have confidence in himself.

A tool that can throw hundreds of steps has never been done in primitive societies.

"Just make a shelf, make a little more durable bamboo basket, fill it with stones, and then pull one end hard, forget it, I'll draw you a figure! First of all, this figure is a small thing to shrink, not just so big!" Chen Mo remembered the city pattern he had drawn for Jing, and Jing built according to such a large figure. In order to avoid this incident from happening again, Chen Mo still explained in advance.

Chen Mo picked up the bamboo strips on the ground and began to draw on the ground.

A shelf, a lever, a few frames tied to one end, and several humanoid lines at the other end are pulling.

The graphics are as simple as that, Chen Mo finished drawing three times and dividing five by two.

Zhuang squatted on the ground and studied for a long time, and finally stood up and said, "Chief, I can make a bamboo basket, but this shelf or something, it's enough!"

"! Anyone can make bamboo baskets! But that's what I want. Chen Mo couldn't help but glare at Zhuang.

"Chief, why don't we give it a try?" Zhuang asked, as if he had thought of a way.

There is no shortage of trees in the primeval jungle, but the trees are too thick and lack tools to cut down.

Chen Mo and Zhuang walked around the jungle for a long time before they found a suitable tree to act as a lever, and then the accompanying clansmen took great pains to cut down the tree and drag it back to the tribe. He was instructing his people to remove the branches from the trees, and only the bare branches.

Chen Mo went to the workshop again and asked the leather to fire some clay bricks to serve as a base.

Because the current conditions are not met, Chen Mo's idea is very simple, that is, tie one end of the log to a bamboo basket, fill the bamboo basket with sand and gravel, drill a hole in about one-third of the way, and then insert a piece of wood as a bearing, and put it on the finished base.

Everyone pulled the empty end hard, cocked the end that was tied to the gravel, and then let go of the lever to the ground, and through inertia, threw the thing out of one end.

This was the rudimentary form of the most rudimentary trebuchet, which was designed to cross the river.

Chen Mo did not only provide a plan this time, but assembled and debugged the trebuchet with Zhuang, and it took three days to complete the theoretical trebuchet.

Similarly, on the riverside, Crystal took the time to finish the base, and after finishing the base, Crystal went back to build the wall.

In the past few days, it is not only Chen Mo and others who are tired, but also Chi, who has been training Chi Jiu to tie a rattan knot.

When everything is ready, it's almost time to try.

On a sunny day, Chen Mo took everyone to the river with a simple trebuchet, and after setting up the trebuchet and doing simple debugging, the epoch-making moment of primitive society is coming!