I am the chief of a primitive tribe

Mu Feng explained for a long time, but Li Hu was still a little confused.

Helplessly, he had to take them outside to select trees, and then instructed them to cut the wood flat and tie it up. In the end, he even taught them how to use the wooden stakes himself.

Watching four or five people erect a large tree stump and smash it on the ground, the dull "bang bang bang" sound continued to ring, giving a sense of modern industrialization.

After the wooden stakes were smashed down one by one, the original potholes on the ground quickly became flat.

By noon the next day, the foundations for the entire tribe to build houses were all compacted.

Li Hu asked, "Chief, what should we do next?"

"Well, let's go to Mingguang now and transport the soil he dug to the tribe. Then go to the back mountain to pick up the thick black bamboo and cut it off, leaving a part of the thick ones, and cut the others into three parts, and each bamboo into four pieces."

"In addition, take a few more people to collect all the ash in the tribe."

"Yes!" Li Hu agreed.

Cutting black bamboo is already familiar to the tribe.

Collecting ash is not difficult, because it was just collected a few days ago.

What makes Li Hu puzzled is that he always does what the chief asks him to do, but he doesn't know why he does these things.

Especially now that Mu Feng asked him to cut bamboo and collect ash, he would do it, but he didn't know what the connection is between these two things.

Before he could react, Mu Feng said, "Take out the hay stored in the tribe, it will also be needed!"

"Yes!" Li Hu responded quickly.

Although he didn't know why he did these things, he knew that the chief had his own reasons for asking him to do these things.

Mu Feng had his reasons for doing this. He wanted to build a house for the tribe that combines living and protection - Tulou!

Tulou is a kind of house built by the Hakka people in southern Fujian in the past.

This kind of house is a kind of soil mixed with sandy clay and clayey sand, which is shaped and rammed into walls with plywood. Others are made of wood.

Tulou is an outer layer of soil and an inner layer of stone. It is windproof, waterproof and fireproof - authentic Tulou can also prevent earthquakes and typhoons.

Mu Feng wants to build such a house, which combines living and defense.

It is definitely not as simple to build as adobe house, but once it is built, it can allow the tribe to live for many years or even generations!

The outer earth wall is easy to solve.

After the foundation is laid, the wall foundation can be directly piled up with stones mixed with hay mud.

The upward wall can be shaped with black bamboo as the wall pillars, and black bamboo slices can be used to shape it. Clay can be placed in the middle, and "concrete" made of sand, gravel and broken hay can be added. Then it can be tamped vigorously.

The problem is that the inner wall needs to be piled up with stones or bricks, but the stone piled into a wall is not only strong, but also stable.

The main reason is that he has no cement at the moment.

If he had cement, this problem would not be a problem.

In desperation, he had to turn to the system for help and exchanged a method of making cement from the system.

This cost 200 achievement points, which is much more expensive than the 50 achievement points of Jing Gulu.

But fortunately, Mu Feng is now "rich and powerful", with 3400 achievement points to support his waist, and he is very generous.

After exchanging the method, he felt for the first time that it was worth it, because there are many ways to make cement, and Mu Feng can use one at the moment - the method of making wood ash.

The materials needed for this method are simple and easy to implement.

So he asked Li Hu to gather all the wood ash in the tribe.

But he was surprised to see the wood ash piled up like a small mound.

"Why is there so much?" Mu Feng looked at Li Hu.

"In fact, we used these things to bury feces before..." Li Hu scratched his head a little embarrassedly and didn't continue.

Mu Feng didn't think so, nodded and said with relief: "Thank goodness!"

So he began to make cement according to the method he got from the exchange.

First, filter out the floating ash on the surface of the wood ash, then use the largest stone jars in the tribe to fill water, and gently pour the wood ash into the stone jars in batches for secondary separation.

In this way, the light ash in the wood ash floats to the surface of the water, and the heavy ash, that is, the high calcium content, sinks into the water.

After this step, he gently tilted the stone pot and poured out the water bit by bit. Then he rolled the wood ash, which had become "mud" after being mixed with water, into balls, squeezed them tightly, and put them in the fire one by one to start burning.

Of course, Mufeng demonstrated how to do all this, and Lihu and his tribesmen completed it exactly.

Soon, the cement made of wood ash with gray in white and gray in white wasIt's done.

Because dozens of people worked on it at the same time, the amount produced was considerable.

To avoid waste, Mu Feng first found a few cement eggs and crushed them, and then bonded them with the soil on the ground, sandy soil, and red acid soil at the foot of the mountain for experiments.

It turned out that the soil blocks made by mixing acid soil, sandy soil and cement were the hardest.

To some extent, such soil blocks are close to some concrete in later generations.

Mu Feng was excited. With such cement, stones, sand and gravel, the earthen building that he wanted to build for both living and defense was done!