Han Cheng looked at the bricks that had collapsed into a pile, sniffed, then put the bricks aside and continued with this task that seemed like it would never be completed.

There are not many shortcuts to mastering the skills you have. You can only improve your proficiency little by little through constant trial and practice.

He is just an ordinary person in later generations without any super powers, so he can only try again and again, learn from his experiences and lessons, and then continue trying.

“Clatter…”

Looking at the arch that was finally connected together, Han Cheng had no time to feel happy before the bricks that had been pieced together collapsed again.

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

Sister Bai Xue, who had been standing by and watching for a while, finally couldn't help but speak.

She didn't understand why Brother Cheng only used bricks instead of using some mixed mud as a binder as he did before, or simply using stronger cement.

How could it be possible to build a pile like this using only bricks, and in the air?

How can it not be stacked up!

Sister Bai Xue and the others had never been exposed to these things and didn't understand the principles behind them. But she had seen skilled craftsmen before and learn how to make an arch using bricks one by one.

It won't be strong enough without some glue.

There seems to be some kind of force involved here. As a liberal arts student he doesn't quite understand it, but he does understand that the principle is similar to that of eggshells.

The eggshell is so thin and brittle that most people cannot crush it with their hands.

The arch Han Cheng wanted to create was something like this.

We cannot be lazy in this regard. The internal structure of the arch that is forcibly made of wood ash cement or mud is not perfect, and such an arch will not have sufficient load-bearing capacity.

What's more, what Han Cheng is preparing to build now is a brick kiln, and it's the kind of kiln that requires people to enter to place bricks and take bricks out.

How can we not take this seriously?

Otherwise, if people were working in the kiln and it suddenly collapsed, then...

Han Cheng wiped the sweat from his forehead, stood up and took a rest, then said to Bai Xuemei with a smile: "We can't use mud for this for now. Wait until I have built them up, then I can use mud...Hasn't it been built up a while ago..."

Sister Bai Xue blinked her eyes, and it collapsed as soon as she let go. Is that what you call a good stack?

But she didn't say anything more. Since Brother Cheng said so, there must be a reason for it. He must be able to build these things without using mud.

After standing here and watching for a while, she left and went to pick mulberry leaves with several other people from the tribe.

The silkworms have begun to shed their skins. After shedding, they will eat a lot of mulberry leaves.

Han Cheng also continued with his work of constantly building up and collapsing.

During this period, more than once, someone came to him and offered him solutions like Sister Bai Xue did, but he always rejected them with a smile.

The Zhaozhou Bridge was built successfully despite its long span and has stood for a thousand years without collapsing. It makes no sense that I can't build an arch with a span of only one meter...

Is it true that an arch built without mud bonding is stronger than one built with mud?

When the people of the Qingque tribe learned what the Son of God wanted to do, they were all confused. At the same time, they were looking forward to the Son of God to do what he said so that they could open their eyes.

The leader of the Donkey Tribe, who was addicted to business, came again with the goods exchanged by the tribe. He expressed his incomprehension about the things that appeared outside the Green Bird Tribe.

The people in this tribe don't even go hunting. They just dig in the dirt all day long and don't do their jobs... The point is, this tribe is getting better and better, which is really sad.

Especially that Son of God, who kept building things with neatly arranged stones, and it kept collapsing. In the time that he had seen it, it had 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 things he had exchanged and walked away complaining all the way.

There was a reason for his complaints. Originally, he only needed to exchange the furs for pottery and other things. Now that salt was no longer free, the same furs would have to be exchanged for much less things.

Are they trading with other tribes again? Do they need to ask for more salt?

The leader of the donkey tribe thought like this...

Not long after the leader of the Donkey Tribe left, Han Cheng finally completed the actual arch.

The vault, built entirely with dry bricks, did not collapse like before. Instead, it stood there quietly with its arc.

It's like being stuck with cement.

The people of the Qingque tribe who saw this scene were very surprised at this completely unreasonable thing.

What surprised them was what happened next. After waiting for a while, the Son of God put one foot on it.

This made everyone very worried. It was already very difficult for something like this to hold up and not collapse, so how could they step on it with their feet?

However, the expected collapse did not occur. After the Son of God placed his feet on it, the thing that seemed unable to bear any weight and would collapse at any time was actually very stable.

“Brother Cheng!”

After discovering that Han Cheng intended to climb up to the top of the arch, Sister Bai Xue screamed in worry.

Although the arch is not high and you can survive a fall, it is made of bricks and there is a high possibility that your feet will be crushed by the collapsed arch.

Han Cheng smiled at her and stood up.

To everyone's surprise, this seemingly flimsy vault made of dry bricks with an empty space in the middle actually supported the weight of the Son of God without any signs of collapse.

Everyone looked at this magical scene and couldn't help but marvel in amazement.

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

Hard work pays off, and I finally made this thing!

Everyone was very curious about how this seemingly fragile roof could withstand so much force. After asking Han Cheng for his opinion, they began to move up one by one.

After experiencing the solidity of the roof themselves, everyone was even more surprised. After successfully losing weight, it was still the second brother, the heaviest in the tribe, who went up and jumped back and forth several times. Everyone had a new understanding of the solidity of the arch.

Amid everyone's regretful looks, Han Cheng personally dismantled the arch that had been built with great difficulty.

Then they demolished one of the 30-centimeter-high "low walls", moved it back half a meter, and continued to build the vault with bricks.

But this time the span of the arch reached one and a half meters.

“Clatter…”

As Han Cheng expected, the first attempt failed again.

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