~： One hundred and twelve, night visitors

"Zi La~~!"

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

In order to make the dagger more useful, he still needs to perform the last process, that is carburizing!

first attach the mud to the blade of the dagger, make it dry, and then bury it in the charcoal ashes.

The role of carburizing is to remove burrs, which can increase the toughness of the blade without reducing too much hardness, and the cutting power of the sharp blade for removing burrs is amazing.

"Is the kiln stopped now?" Han Qianluo looked at the reddish pottery in the kiln, and the mud inside was flushed abruptly.

The temperature inside the kiln should now be around 900 degrees, and the irritable heat can be felt even 4 meters away.

"Well, stop first, I don't know how long it has been firing, but it's almost the same." Zhao Yunxiang worked hard to calculate the time, but unfortunately without a clock, you don't even know how many hours have passed.

Actually, the best time to burn pottery is 4 hours. Too short a time can not crystallize the molten pottery, and too long will cause the pottery to overheat and break.

This is a control of time and experience, and Zhao Yunxiang is still groping in the elementary stage.

"Brother, what are you going to toss about?" Lin Qingyu saw that Zhao Yunxiang was picking wood again, as if he was going to the kiln.

"I want to make some charcoal while the kiln hasn't completely cooled down!" Zhao Yunxiang nodded seriously.

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

The effect of charcoal is not the same as that of bamboo charcoal. In the aspect of burning and barbecue, fruit wood charcoal is the most suitable and has slightly poor adsorption, but the adsorption of bamboo charcoal is super strong.

“If we don’t use bamboo charcoal for the time being, what we need most is charcoal for cooking.” Zhao Yunxiang selected dozens of pieces of wood that were not badly decaying and slowly put them into the kiln.

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

I knew from the opening of the kiln that there was a crack in one of the clay pots, and the crack was very large, and a residual edge was obvious.

I can’t take out the pottery now because it’s burning red! From high temperature to ground temperature is a sudden drop in temperature, these things will burst like glass.

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

The principle of carbonization of wood is that in the absence of oxygen, the wood burns a little bit, and without an open flame, the wood is burned into carbon a little bit.

However, after being burned to a certain degree, it must be sealed to form a basic vacuum space, otherwise the charcoal will turn into dust.

On the chimney of the kiln, thick smoke billowed. Those were the moisture in the wood. Because there was no open flame, the smoke was especially strong and almost white.

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

This hole can't be left too large, because this will give the charcoal a chance to burn, and Mars will burn the whole piece of wood to ashes.

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

Anyway... the production of charcoal is very complicated.

Before going to bed, Zhao Yunxiang drank a glass of honey lemonade, working on the side of the kiln was really terrible. He thought he had a thick skin, but he was still blushing.

In the night!

Zhao Yunxiang was lying on the bed tossing and awake. He keenly caught Han Qianluo going out with the twins. It has been a long time now, only to hear the sound of water outside.

Several girls are washing outside...underwear! !

"Teacher Han, are you sure that the little brother won't come out?" Lin Qingyu was wearing a grass skirt made of palm leaves at the moment. This primitive dress was very nervous.

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

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

This puddle stores a lot of water, and the texture is limestone. Because of the long-term weathering, it has formed a strange-shaped pit.

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

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

After Zhao Yunxiang took a sea bath just now, the water stains on his body became dry, but a layer of particles was left behind, but the guy shook and all landed.

"I hope it can be dry tonight!" Lin Qingyu shook her underwear, preparing to hang it up high.

The bamboo next to 　　 is very good, and there is a side branch that grows very happy, about 2 meters, and the girls can reach it.

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

"..." 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 dry the clothes in a small shed!" Han Qianluo suggested, "This small shed can not only shelter from the rain, but the wood burning in the mud stove can also provide temperature for drying clothes!"

"Okay!" Lin Qingyu was ecstatic. Several girls aired 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 black oil stains. .

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

The hair on the little gray fox looks very smooth. Han Qianluo wanted to make him play, but unfortunately, this little guy is very clever and doesn't give Teacher Han a chance at all.

"Ah~~~!" Han Qianluo caught the fox for a long time without catching it, and then Teacher Han gave up.

This fox is super fast and very keen!

is indeed wild!

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

The silence did not last long. The bamboo fence seemed to move a little bit. In the gap between the bamboo, a scarlet eye was peeping at the shelter.

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

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