78, the role of sodium oxide (three more to ask for rewards)

Now, what Zhao Yunxiang fears most is that something is hovering around the shelter.

After hearing this, Zhao Yunxiang felt the need to build a fence around the shelter to prevent wildlife from entering the shelter.

Returning to the bamboo house with Han Qianluo, Lin Qingyu looked at Zhao Yunxiang anxiously, "I went to the toilet over there just now, and when I heard movement in the grass, I threw a stone, and the result was ...... Saw a beast!"

"Beast??" Zhao Yunxiang frowned and thought, and then asked, "Is it big?"

In the case of wild beasts, adult wild boars, crocodiles, pythons, and ...... are known to pose a threat to humans The giant beast that scared the wild boar in the forest last time!

Could it be...... That behemoth??

"I don't know, I was scared by the beast at the time, and I always thought it was ...... It's big, at least, the ears are big!" Lin Qingyu frowned, his big eyes rolling flexibly, as if he wanted to replay the horror fragments in his memory.

It's a pity that I only saw one glance just now in extreme horror.

"Big ears?" Zhao Yunxiang thought for a few seconds, and he could completely rule out the terrifying giant beast he saw in the grove.

"That guy, it shouldn't be very big......"

Zhao Yunxiang said thoughtfully.

"How do you know?" asked Han Qianluo curiously.

"Foreign scientists have done experiments, when people are frightened, the objects they see will be magnified because of fear, just like the moment a domestic cat appears, because the hair on its body is too much like a lion, and you suddenly capture that moment, you will think it is a huge lion. ”

Zhao Yunxiang made an explanation.

"I remember, it seems like a documentary made by the Discovery column. Lin Qingxuan frowned and thought carefully, and said, "I forgot what it was, my eyes are red, and I can fly." ”

"Moth people!" Han Qianluo said, "When I was studying abroad, I heard a lot of legends about the Moth people. ”

"Okay, it's good that you know!" Zhao Yunxiang said, "You wait here, and you have time to collect the seashells on the beach, all the shells, including the conch." ”

"What are you doing collecting shells?" Lin Qingyu asked curiously.

"Just do it!"

Zhao Yunxiang didn't say anything about the shells, but walked straight towards the grove on the side of the bamboo forest.

Before entering the grove, Zhao Yunxiang deliberately put a bubble shield on his body, although the feeling of being restrained is not good, but the mosquito cannot be pierced.

"Buzz ......"

Mosquitoes swirl around Zhao Yunxiang, their eyes with their own thermal imaging, looking for nearby targets with their eyes, looking for distant targets with their sense of smell, these blood-sucking creatures can smell the scent of carbon dioxide excreted by humans a mile away.

It's mostly shrubs and weeds, and the girls love to go to the toilet here.

"I really can't figure out those women, the grass is so high, and the ones who are tied to pp are still peeing here?" Zhao Yunxiang muttered as he walked, while looking for the beast that Lin Qingyu said.

After looking around, he didn't find any clues, Zhao Yunxiang thought it might be a rabbit or something, after all, rabbit ears are also very big.

Just as Lao Zhao turned to leave, a pair of eyes poked out from the bushes, and it stared at Zhao Yunxiang coldly.

It seems that he has sensed something, Zhao Yunxiang feels as if he has been spied on by something, his perception has been greatly improved, and he feels that there is something behind him, it should not be the cranial nerves who are thinking about his own brain!

However, when I turned around, I found nothing.

"Damn, have you met a veteran?" Zhao Yunxiang glanced around, and muttered in a low voice, "It seems that I am really worried about something." ”

Now it seems that the production of the fence is urgent, and the fence must be completed in the shortest possible time!

I guess I'll spend the next few days in a shelter!

Zhao Yunxiang summed it up, and it will take at least 3 days to complete these tasks.

"Did you find anything?" Han Qianluo saw Zhao Yunxiang returning, and the body of this goods was not bitten by mosquitoes.

You must know that Zhao Yunxiang's skin is very afraid of mosquito bites, and after being bitten by mosquitoes, he will get a big bag, and it will not even disappear for more than ten hours.

Today, I didn't get bitten by mosquitoes, which is very strange!

Mainly, someone goes in with a shield, silky and ultra-thin, and enjoys the bondage experience!

"No~!" Zhao Yunxiang shook his head, "Maybe it's a rabbit, and the rabbit has big ears." ”

"Okay...... I hope it's a rabbit......" Lin Qingyu pouted and said.

"How's the shell search?" Zhao Yunxiang arranged the job to find the shells, and now there are many clam shells and conch shells lying in the open space of the shelter.

As for the giant clams shells, they don't add because that's their bowl!

When the kiln is built and the pottery is fired, the pottery bowl can be used!

But now you have to tann the python's skin!

As early as prehistoric times, our ancestors knew how to use animal skins to cover their shame and keep warm, and the animal skins at that time were not specially treated and were very uncomfortable to wear.

With the continuous attempts of predecessors, there is finally a set of things to increase the flexibility of leather, that is, soaking, deacidification and other processes.

Instead, all they have is the snake skin of a python, without excessive fur, and now it's just that the subcutaneous tissue attached to the snake skin is not easy to clean.

Therefore, sodium hydroxide caustic soda is needed to soften and inhibit bacterial regeneration.

Of course, Zhao Yunxiang does not have sodium hydroxide, but there is ready-made calcium oxide, that is, lime!

The chalk and plaster we come into contact with are made of lime, and they are made of calcium hydroxide and hydrated lime.

Some of the lime comes from special stones, and some comes from shells.

That's right, the powder after these shells are crushed is calcium oxide!

"Do you want to make lime out of shells?" Lin Qingyu saw Zhao Yunxiang tear the snake skin off the tree and soak it in the water by the sea.

There are fewer bacteria in seawater, and the salt of seawater contains alkali, which is corrosive and can improve the flexibility of snakeskin.

If you add lime powder and tanning it, I believe it will be able to make it look like it is ideal.

Tanning leather is just a try......

No, it's a toss!

People don't toss teenagers in vain, although Lao Zhao is 23 years old this year, he still has a tossing heart!

"Alright, let's start now, crush the shells!"

Zhao Yunxiang came to the shade with a pile of shells and smashed the shells on the anvil with a hammer.

The hammer is naturally the hammer made of gears, and the anvil is the shell of the gearbox that was removed from the yacht, this shell is very thick and flat, and it is very convenient to make an anvil!

The shells are crushed, and these things have different thicknesses, and they can be separated by blowing the wind.

Just put the shell powder on the leaves, and then slowly sprinkle it in the sea breeze, and the particles that fall straight down are larger, and those that are driven away by the wind are small particles.

After dozens of minutes, many fine particles are sorted, and as for those with larger particles, they continue to be hammered until they become powder.