Han Cheng looked at the pile of bricks that had collapsed, sniffled, then pushed the bricks aside and continued the work that seemed to never be done.

There are not too many shortcuts to the technique in hand, but only through continuous trial and practice, and the proficiency can be improved little by little.

He is just an ordinary descendant, and he has no superpowers, so he has to try again and again, learn lessons from the attempt, and then continue to try.

"Boom la la ......"

Looking at the vaults that were finally connected, Han Cheng didn't have time to rejoice, and these bricks, which had been pieced together, collapsed again.

"Brother Cheng, get some mud and it won't collapse......"

Bai Xuemei, who stood on the side and watched for a while, finally couldn't help but open her mouth.

She couldn't understand why Brother Cheng only used bricks, instead of using some good mud as a binder, or simply using stronger cement as he had done in the previous days.

In this way, only bricks are used, or they are vacated, how can they be built?

How can it not be built!

Bai Xuemei and the others have not been in contact with these people, and they don't understand the truth here, he has seen a master with good craftsmanship before, how to make an arch out of bricks piece by piece.

If you don't have something to glue, it won't be strong.

As a liberal arts student, he doesn't know much about this, but he also understands that this principle is similar to an eggshell.

Eggs with thin and crispy shells can't be crushed by hand.

The vault that Han Cheng wanted to make was something like this.

On this, you can't be a little lazy, and the vault that is forcibly condensed with grass and wood ash cement or mud has not reached a perfect state in its internal structure, and such an arch has a load-bearing capacity.

Moreover, what Han Cheng is going to do now is a brick kiln, and it is the kind of kiln that requires people to enter and put bricks inside and go out for bricks.

How can you do it without taking it seriously?

Otherwise, people are working in the kiln, and then the brick kiln plops down and one guy collapses, so ......

Han Cheng wiped the sweat from his forehead, stood up straight to rest, and said to Bai Xuemei with a smile: "You can't use mud for the time being, when I finish building them, I will use mud... Haven't you just built it up for a while......"

Bai Xuemei blinked her eyes, and collapsed as soon as she let go.

But she didn't say more, since Brother Cheng said so, then there must be a reason for him, and he must be able to build these up without mud.

She stood here and watched for a while, then left the place and went to pick mulberry leaves with the rest of the tribe.

Silkworms have already begun to shed their skins, and after shedding their skins, they will eat a lot of mulberry leaves.

Han Cheng also continued to build his own continuous collapse.

During this period, there were more than once people who came over and proposed solutions to him like Bai Xuemei, but he refused with a smile.

The span of Zhaozhou Bridge is so long that it can be built successfully and stand for thousands of years without falling, and now I build an arch with a span of only one meter, and it makes no sense to get it right......

Is the arch that is not cemented with mud really stronger than the one used?

The people of the Qingque tribe who learned what Shenzi wanted to do were all confused, and at the same time they were looking forward to what Shenzi said to come out and open their eyes.

The leader of the donkey tribe, who was addicted to business, came again with the goods that the tribe had exchanged, and he couldn't understand these things that appeared outside the Qingque tribe.

The people of this tribe did not see how they went hunting, but they spent their days scratching in the dirt, not doing their jobs...... The point is that such a tribe is getting better and better, which is really uncomfortable.

Especially the Son of God, who kept building things with regular stones, and kept collapsing, and in the time he saw it, it had already collapsed four times.

This... Is this really the Son of God who is worshipped as a god by this powerful tribe?

The leader of the donkey tribe took the exchanged things and complained all the way away.

It was not for nothing that he complained about it, originally he only needed to exchange the fur for pottery, but now the salt is not free, and the same fur has to be exchanged for a lot less.

Is it to trade with other tribes anymore, and in terms of salt, do you want more things yourself?

The leader of the donkey tribe thought so......

Not long after the leader of the Donkey tribe left, Han Cheng finally got the vault in the true sense.

The vault, which was all made of dry bricks, did not collapse again this time, but stood quietly with a curve.

It's like it's stuck in cement.

Seeing this scene, the people of the Qingque tribe looked very surprised when they looked at this completely unreasonable thing.

The thing that surprised them was the back, and after waiting like this for a while, Miko put one foot on it.

This makes everyone very worried, it is not easy for such a thing to support without collapsing, why do you still step on it with your feet?

However, the expected collapse did not occur, and after Miko's feet were placed on it, the thing that seemed to be unable to carry any weight and would collapse at any time was actually stable.

"Brother Cheng!"

After discovering that Han Cheng had the intention of going up to the top of the vault, Bai Xuemei shouted worriedly.

Although the vault is not high, it cannot be broken down from above, but it is made of bricks, and it is likely to be squeezed by the collapsed vault.

Han Cheng smiled at her, and then stood up.

To everyone's surprise, the vault, which did not look sturdy at all, was made of dry bricks and had a hollow center to bear the weight of the Son of God, and there was no sign of collapse at all.

Everyone looked at this magical scene and couldn't help but be secretly surprised.

Han Cheng stood on it for a while, walked tentatively for a while, and after finding that the vault was very strong, he began to tentatively jump lightly on it, and then continued to increase his strength, and then jumped down with all his strength, and there was no sign of collapse, Han Cheng couldn't help but smile.

The hard work paid off, and I finally got this thing out!

Everyone was very curious that this top that didn't look sturdy at all could withstand so much power, and after consulting Han Cheng's opinion, they also began to go up one by one.

After experiencing the firmness of this top, one by one was even more surprised, and after the weight loss was successful, the second senior brother who was still the heaviest weight in the tribe went up, and after jumping back and forth a few times, everyone had a new understanding of the firmness of this vault.

In the look of regret from everyone, Han Cheng personally demolished the vault that had been built with great difficulty.

Then one of the 'low walls', which was only 30 centimeters high, was also demolished, and after moving back half a meter, the brick vault was continued.

Only this time the span of this vault reached one and a half meters.

"Boom la la ......"

As Han Cheng expected, the first attempt failed again.

However, with the previous experience of building small vaults, this vault with a larger span did not fail too many times, and the next day, he set it up.