But even though these three walls add up to only 1,100 meters, it is still a huge project for the Qingque tribe.

Han Cheng did a simple calculation.

The adobe bricks made in the tribe are large bricks that are ten centimeters thick, twenty centimeters wide and forty centimeters long.

Assuming the wall is built to be two and a half meters high and forty centimeters thick, it will require 137,500 adobe bricks.

I spent a whole day yesterday trying to make soil for cultivation, including digging the soil, mixing the mud, and moving the finished adobe bricks aside.

There were twenty-five people in the tribe participating in the labor, almost all of them were the main force of the tribe. At the end of the day, they only made 800 adobe bricks.

Even if one becomes proficient in all techniques in the future, and calculates based on making one thousand adobe bricks a day, it will take more than four months, almost five months, just to make the adobe bricks.

This does not even include the time it takes to transport the dried products to the required location.

Taking into account the weather conditions such as cloudy, rainy, thunderous and windy, it would take six or seven months just to make and transport the adobe bricks...

And this is when everyone in the tribe does nothing else and gives their all.

If you add in the picking of fruit, burning of trees to plant rapeseed, and grassing for deer and rabbits, etc.

It took almost ten months just to prepare and transport the adobe bricks to their proper places...

Later, you need to dig some foundations, mix mud and stack adobe bricks to form walls, which also takes a lot of time and effort.

After doing this calculation, excluding the two or three months in winter when people cannot work outdoors, Han Cheng discovered that he might not be able to build the wall he wanted by the autumn of the following year!

Damn, it’s so hard to make something!

Han Cheng couldn't help but want to curse.

It won't work if you build it this way, it takes too much effort!

For several days, Han Chengdu was thinking about this matter that made him frown.

It actually gave him some idea. The solution was to use the rammed earth method instead of adobe to build the wall.

Until the Qin and Han Dynasties, and even in later dynasties, many city walls were built using the rammed earth method.

This is also the main reason why during ancient wars, when one side diverted water to flood the city, some parts of the city walls would collapse after a few days.

Compared with making adobe bricks first and then mixing mud and gluing them together to build a wall, the slab-on-paper method is much more labor-saving and time-saving.

You only need to use boards to support both sides and ends of the place where you want to build the wall, then put the mixed mud directly into the space enclosed by the boards, and then pound the mud firmly.

The wall built in this way is integrated. In the absence of steel bars, cement, lime and glutinous rice, such a wall is much stronger than one built with adobe.

After Han Cheng thought of the method of block building, he slapped his forehead. His thinking was restricted again.

In later generations, the most common materials for building walls are steel bars, cement, bricks and tiles, and even lime is rarely used nowadays.

The rammed earth method is rarely seen. Even if it is used, it is only used for a small layer when laying the foundation or the "ring beam".

So when Han Cheng was about to start building the wall, the first idea that came to his mind was to use bricks to build it.

If there are no bricks, use adobe instead. If there is no cement, use live mud instead.

It was not until he realized that doing so was too time-consuming and labor-intensive and not very solid that he suddenly remembered the ancient wall-building technique of rammed earth, after much thought.

The most direct reason why Han Cheng remembered this skill came from Han Cheng's encouragement to himself.

The difficulty of building the wall made him a little discouraged. In order not to lose confidence, he began to feed himself with inspirational quotes.

It was not until he recited Mencius's "Born in sorrow, die in happiness" that his mind suddenly became clear as if struck by lightning.

The original text is as follows: Shun was born in the fields, Fu Yue was raised among the bricklayers, Jiao Ge was raised among the fishermen and salt merchants, Guan Yiwu was raised among the scholars, Sun Shuao was raised at sea, and Baili Xi was raised in the market.

Therefore, when God is about to bestow a great responsibility on a man, he must first make his mind suffer, his muscles and bones tired, his body hungry and his body empty…

What benefited Han Cheng the most from this chicken soup was not the following part, "God has bestowed a great mission on this man", but the sentence at the beginning, "Shun was born in the fields, and Fu Yue was raised among the builders."

As expected, you should read more books and drink more chicken soup when you have nothing to do. Won’t the surprise come as you drink more?

The first moment he thought of the adobe method, Han Cheng stopped his senior brother and his colleagues from making adobe bricks.

However, there are some difficulties to overcome when building a wall using the rammed earth method, the most important of which is the foundation of the wall.

If you build the slab directly on the ground without laying the foundation, it will definitely not be stable.

But laying the foundation is not easy with the current tools and means.

In addition to these, there is also the issue of clearing the forests growing in this area.

The simplest way, of course, is to kill the tree first and then burn it.

On the west side of the tribe, more than 300 square meters of trees have died. These are the masterpieces of Han Cheng and his team.

However, if this is really done, the construction of the wall will have to be postponed, because it will take a long time to peel the bark of these trees and wait for them to die and dry up.

This was a bit unbearable for Han Cheng, who was in a hurry to build the wall.

But there is no other way. Given the current production conditions, we can only endure it.

Han Cheng led his men to attack the forest on a large scale.

The first trees to suffer were those that happened to grow along the line drawn by Han Cheng for the construction of the wall.

The weather in early summer is extremely hot, especially now. Without any wind, the whole world is like a steamer, so stuffy that it makes people breathless.

After peeling off the last bit of bark from the root of a tree so big that it was impossible to hug it with an arm, even the strongest eldest brother had to stop, wipe the sweat from his head, pick up the kettle at hand, tilt his head back and drink a gulp of slightly salty boiled water. Only then did he let out a long breath and feel a little relieved.

The eldest brother was actually quite curious, because if it were in the past, in such weather, they would have been out of strength, but now it was different. While enduring this heat to work, he still felt stronger than before.

He attributed this to the fact that the Son of God had arrived and brought them plenty of food, allowing everyone to have enough to eat every day.

Looking at the Son of God who was still a child looking up at the sky not far away, the eldest brother's eyes were full of respect. It was because of the guidance of the Son of God that the people of their Qingque tribe could live such a good life now.

Seeing the Son of God looking up at the sky seriously, everyone, including him, subconsciously held their breath, for fear of disturbing the communication between the Son of God and the gods.