I, the King is a killer

Xiao Yun did not argue.

He mixed the mud and water into a state of moderate hardness.

And then pinch it into a small stove with a lower stomach and upper mouth.

It's like an inverted funnel.

Then knead it carefully, make it almost the same overall thickness, and leave openings up and down.

Then he ran to the hole, squatted there, stretched out his hand and kept grasping on the ground.

His fingers looked thin and white, but on the ground, they looked like a harrow, twigs, pebbles, and some gravel the size of mung beans.

More specifically, it should be soil powder.

Xiao Yun kept rubbing while grasping.

Separate the branches and stones, leaving only a pile of sand that looks very black.

Gather together and put it in the small pinch stove.

It was padded with all kinds of flammable branches and some hay, followed by large pieces of wood.

When everything was ready, Xiao Yun was not in a hurry to light the fire.

Instead, a "skin drum" is made of wood.

Clamp the template with leather and leave two handles. With the opening and closing up and down, there will be a strong wind blowing out of the leather bag mouth.

Xiao Yun nodded and lit the fire.

First, slowly blow with a leather drum, and then speed up the speed to let the wind blow fiercely.

Just look at the small stove, it was burned in an instant, emitting white smoke.

What comes out of the stove itself is something similar to water vapor, while what comes out of the mouth of the stove is white smoke from plants and trees.

yes.

White smoke.

Not black smoke.

What does Xiao Yun really want?

It's not the fire from the grass and trees.

But the black smoke after the vegetation burns!

Because of the structure of the furnace, these black smoke will stay in it for a short time.

Then blow air and increase oxygen, and these black smoke will become new fuel in an instant!

And the burning temperature is much more ferocious than vegetation!

This is "knowledge".

This extremely simple method was discovered in ancient times after thousands of years, and people didn't understand it until more than 100 years before Xiao Yun's time.

I understand what kind of high temperature some substances will produce after full combustion.

Even in ancient times, the frequent "furnace explosion" events are often due to poor ventilation, forming a cyclone in the furnace. The cyclone inhales oxygen into the furnace, which makes the furnace temperature rise rapidly, so that the furnace can not bear the heavy temperature burden, and finally explode directly.

It's dangerous.

Want to solve it?

In fact, it is also very simple.

As long as the overall structure of the furnace is slightly changed.

In ancient times, it took nearly a thousand years to achieve this small change.

After all, if most of the knowledge comes from experience, it is difficult to promote.

Xiao Yun knows the principle.

Is a grade higher.

With high knowledge, we can achieve the same goal in a relatively simple way.

The stove is stronger and stronger.

The temperature in the furnace is also getting higher and higher.

This process lasted about half an hour. Xiao Yun added dry firewood more than ten times before he finally stopped.

Then he wiped a sweat and looked at the small stove with joy.

When the temperature inside gradually dissipated, he pulled a black irregular object from the root of the plant ash with a wooden stick.

It's like a dark poached egg.

Take it out and drench it with water

There was a loud noise.

But soon disappeared.

Steam and white smoke rose from it.

This made both women stare round their eyes at the same time, with an incredible face.

This... Is clearly metal!

Xiao Yun tentatively touched it. Then he took the metal in his hand and beat it twice on the stone.

Then he rubbed the stone a few times, and the metallic luster immediately appeared on it.

Xiao Yun was overjoyed.

Another rock wall, crazy procrastination.

Changed several places in the hole.

Grind every place for a period of time.

After the final grinding, he threw it in front of Tuoba tianer, and then said with a smelly fart: "what did you just say?"

Tuoba tianer picked up the metal.

It has been sharpened!

Smell it. It's the smell of pig iron.

I scraped a piece of bark off the branch with the blade, and the cut was quite flat.

She's a little stupid.

Holding the discus blankly, he said, "what's going on? Ironmaking... How could it be so easy? "

Iron.

This is what every country in the world lacks.

Even if the country is as rich as the sun and moon, it does not mean that every people's home has complete iron tools.

The kitchen knife could be.

But hoes, shovel and so on, but not necessarily.

Ploughing is even more difficult to count on.

But this is still much better than other countries.

After all, even Xiao Yun has seen that some people use wood to make kitchen knives!

As for whether it's good to grind wood as a kitchen knife? For modern people's thought, it must be difficult to use, but for those people in the state of Qin, it's OK. At least it can be used.

Why?

Because the people of Qin can't eat meat every year!

If you cut vegetables, a wooden knife is really good.

Iron deficiency.

There is no shortage of salt and iron. It seems that there is only the Xiao family in the whole world.

And now Xiao Yun even used this simple thing to get the iron out in an instant in front of them?!

Should it be so simple?

How did they make iron in the Northern Wei Dynasty? That's quite trouble.

Even in the whole continent, the Northern Wei Dynasty was a big iron making country.

Because they have a lot of iron ore!

If you want to make iron, you must first have enough iron ore.

Iron ore itself is a very evil place. There is often a strange thing. Mining itself risks its life.

After the iron ore was mined, it traveled a long way by carriage to big towns and handed over to special ironmaking workshops.

The workshop should first hold three animal sacrifices and a furnace opening ceremony.

Assigned by the master himself, allocate raw materials, adjust the layout in the furnace, and then start ironmaking in a weather he thinks appropriate!

There are great dangers in it.

The probability of furnace explosion is about 30%.

Once the furnace explodes, it often means casualties.

So this is also a high risk.

Even if these are done, the refined iron may not be able to use.

Some are refined, let alone made into various tools. Pick up a piece, even if you break it by hand, it can be broken like a piece of earth!

Ironmaking, too difficult!

What happened?

Right in front of her, Xiao Yun smelted iron with simple things that couldn't be simpler? Not even iron ore.

Is this a little too much?

Is this guy an immortal?

She even wants to knock Xiao Yun's head off now.

See if there is a little white bearded fairy hiding inside.

What Xiao Yun wants to do is not over.

He got some black soil again.

These black soils are different from the previous black soils.

Some black powders will actively gather together, as if something in the middle is viscous and sticks them together.

Xiao Yun was overjoyed.

Hurriedly, while the furnace temperature did not completely fall down, another furnace came up.

This furnace is different.

Because Xiao Yun dug a hole in the shape of a nail with sand and stone at the bottom of the stove.

Then fire it again.

After the iron block was taken out, there was a prototype of a nail.

It's just that this nail is big.

It's thicker than your thumb and half a foot long.

After another round of grinding, it finally turned into a shiny big nail.

But it oxidizes really fast.

A layer of black rust soon appeared on it.

Black rust is always better than yellow rust.

One means isolating the oxide layer, the other means rotting.

Xiao Yun knocked the nail on the stone wall several times and listened carefully.

Finally, he sighed and threw the nail aside like garbage.

"Hey, there are too many sand holes, which can't be used."

Tuoba tianer quickly picked up the nail, looked carefully, and then stared at Xiao Yun with a sad face.

Isn't that good enough?

This is much better than what was produced by the ordinary cast iron workshop in the Northern Wei Dynasty.

As a result, in Xiao Yun's eyes, there are too many sand holes?

Look at that small, like a joke, ironmaking furnace, Tuoba tianer's expression is more bitter.

She even whispered: "it seems that it is right to take you away. If you are allowed to help the development of the state of Qin, the Northern Wei Dynasty will disappear in less than 20 years."

Leng Yueling bit her lips and suddenly said, "what you can do has been done and done well. Now you, the saint of Wenzong in the Northern Wei Dynasty, are dead. Why don't you let yourself go for you?"