Divine Desert Island Survival System

"Zi la~~!"

A sharp and sharp dagger was put into water by Zhao Yunxiang for quenching treatment. After this process, the hardness of the dagger will be greatly increased, but the toughness will be reduced accordingly.

In order to make the dagger more useful, he still needs to carry out the last process, which is carburizing!

First, mud is attached to the blade of the dagger, and after it dries, it is buried in charcoal ash that turns into ashes.

The function of carburizing is to remove burrs, which can increase the toughness of the blade without reducing the hardness too much, and the cutting force of the sharp edge after removing burrs is amazing.

"Has the kiln stopped now?" Han Qianluo looked at the red pottery in the kiln, the mud inside was burnt red.

Now the temperature inside the kiln should be around 900 degrees, and even 4 meters away can feel the violent scorching heat.

"Well, let's stop first, I don't know how long it has been fired, but it's almost there." Zhao Yunxiang worked hard to calculate the time, but unfortunately there is no clock, you don't know how many hours have passed.

In fact, the best time to fire pottery is 4 hours. If the time is too short, the molten clay will not crystallize. If the time is too long, the pottery will overheat and shatter.

This is a matter of time and experience, and Zhao Yunxiang is still in the initial stage of exploration.

"Brother, what are you going to do?" Lin Qingyu saw that Zhao Yunxiang was picking wood again, as if to stuff it into the kiln.

"Before the kiln is completely cool, I want to make some charcoal!" Zhao Yunxiang nodded solemnly.

"The kind of charcoal used for barbecue?" Lin Qingxuan asked, "Or the kind of bamboo charcoal that absorbs formaldehyde and removes moisture?"

The effects of charcoal and bamboo charcoal are not the same. In terms of burning and grilling, fruit wood charcoal is the most suitable, and its adsorption is slightly worse, but the adsorption of bamboo charcoal is super strong.

"As for bamboo charcoal, we don't need it for the time being. What we need most is charcoal for cooking." Zhao Yunxiang selected dozens of pieces of wood that were not seriously decayed and slowly put them into the kiln.

At this moment, the pottery in the kiln is still glowing red. After all, it has been burned by the fire for several hours, and it needs to cool down slowly.

From the opening of the kiln, it is known that a clay pot has cracked, and the crack is very large, and a residual edge is very obvious.

The pottery cannot be taken out now, because it is burning red! From high temperature to ground temperature is a sudden drop in temperature, and these things will burst like glass.

When the wood is put into the kiln, because the flame of the kiln fire pit has been extinguished, there is no open flame, only a thick layer of charcoal is burning, so the charcoal put in will be carbonized under the high temperature baking.

The principle of carbonization of wood is that in the absence of oxygen, the wood burns a little bit, and in the absence of an open flame, the wood is burned into carbon a little bit.

However, after burning to a certain extent, it must be sealed to form a basically vacuum space, otherwise, the charcoal will turn into dust.

On the chimney of the kiln, thick smoke is billowing, which is the moisture inside the wood, because there is no open flame, the smoke is extremely thick, almost white.

"Okay, now seal the kiln, wait for the kiln to cool down tomorrow and open it!" Zhao Yunxiang sealed it with the reconciled yellow mud, leaving only a small hole for the carbonization of charcoal to slowly penetrate .

The hole should not be too large, because it will give the burning charcoal a chance, and the sparks will burn the whole piece of wood to ashes.

Of course, the mouth cannot be sealed, because there is no oxygen to burn if it is sealed, the outside of the charcoal will be carbonized, and the inside will still be wood.

In short... charcoal making is very complicated.

Before going to bed, Zhao Yunxiang drank a glass of honey and lemonade. Working by the kiln was really terrible.

I thought I had a thick skin, but in the end, my face was flushed red.

Into the night!

Zhao Yunxiang lay on the bed tossing and turning, he keenly noticed that Han Qianluo went out with the twins. It has been a long time since he went out, but he only heard the sound of water outside.

A few girls are washing...underwear outside! !

"Mr. Han, are you sure my little brother won't come out?" Lin Qingyu was wearing a grass skirt made of palm leaves at the moment, and this primitive dress was very tied up.

"He fell asleep, and usually he wouldn't come out except to pee and watch the fire." Han Qianluo washed his clothes with water, which was rainwater.

On the side of the shelter, there is a reef area, and there is a water hole in the reef area.

This puddle stores a lot of water, and its texture is limestone. Due to long-term weathering, it has formed a pit with a weird shape.

Originally, Zhao Yunxiang planned to use this pit to dry sea salt, but unfortunately, it was delayed because of too many things.

The poor people have been on the desert island for so long, and they have never eaten granular sea salt once.

After Zhao Yunxiang took a seawater bath just now, the water stains on his body dried up, leaving a layer of particles, but the thing shook and all fell to the ground.

"I hope it can dry out tonight!" Lin Qingyu shook her underwear, ready to hang it on a high place.

The bamboo next to it is very good. There is a side branch growing very pleasantly. It is about 2 meters, and the girls can reach it with their hands.

However, the twin sister stopped immediately, and Lin Qingxuan pointed to the sky, "It's still cloudy now, who knows if it will rain tonight, you hang here, tomorrow you will either wear wet clothes or not at all!"

"..." Lin Qingyu looked up at the sky, looked at the pitch black sky, pondered for a moment, then nodded and said, "You are right!"

"Why don't we hang the clothes to dry in the small shed!" Han Qianluo suggested, "This small shed can not only keep out the rain, but the firewood burned in this clay stove can also provide warmth for drying clothes!"

"Okay!" Lin Qingyu was overjoyed immediately, and the girls dried their clothes on the bacon rack above the stove. The bacon rack was covered with a layer of leaves, so that the underwear would not be stained with blackened grease. .

"Aww~!" The gray fox crawled on top of the firewood, glanced at the pile of underwear on the bacon rack, and then shook its huge ears.

The hair on the little gray fox looked very smooth, and Han Qianluo really wanted to tease it, but it was a pity that this little guy was very clever, so he didn't give Teacher Han a chance at all.

"Ah~~~!" Han Qianluo caught the fox for a long time but failed to catch it. Immediately, Teacher Han gave up.

This fox is super fast and very sharp!

It is indeed wild!

The courtyard of the shelter fell into silence again, only the sound of the sea breeze blowing bamboo leaves echoed. .

The silence didn't last long, the bamboo fence seemed to be moving a bit, and in the gap between the bamboo, there was a scarlet eye peeking into the shelter.

The gray fox that was crawling on the woodpile seemed to have noticed something, and looked up and stared at that eye. Just like that, they looked at each other for a long time...

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