“Who says rock brine isn’t salt?”

After thinking for a while, Bai Yuqi asked Yang Tieniu: "Is there a container for water?"

Yang Tieniu was stunned, and his eyes suddenly burst with incredible surprise, but he was afraid to ask a question, lest he get a negative answer.

He quickly took off the backpack on his back and took out a bamboo tube. When he was about to hand it to Bai Yuqi, he went back and pulled out the stopper and took a few sips.

He also handed it to Yang Xiaoshan and Gouzi beside him, asking them to take a few more sips. Inside was a bamboo tube of "fairy water" that he secretly poured from the water tank at Yang Zhao's house, and he couldn't bear to waste it.

He took the bamboo tube and asked Yang Tieniu to knock off a large piece of rock brine from the rock wall with a hunting knife, then smash it with rocks and grind it into powder.

Fill half a bucket into a foot-long bamboo tube, fill it with some bitter spring, and stir it into a saturated solution with branches.

Bai Yuqi waited for the saturated solution to settle, carefully poured the clearer part of the upper layer into a natural depression on a rock, and then launched the [Dehydration Technique] on it.

The turbid saturated solution in the puddles on the rock evaporated rapidly at a speed visible to the naked eye, leaving only a thin layer of brown powder.

Bai Yuqi picked up a little bit with her fingers and rubbed it, shook her head and released the [Separation Technique] on it, and some impurities were separated from the brown powder.

The remaining powder turned into gray-brown. Bai Yuqi dipped a little bit with her finger and looked at it, then licked a little bit with her tongue, smacked her mouth, frowned and spat it out, failing.

Seeing Bai Yuqi shaking his head, Yang Tieniu and the others tensed up and watching nervously beside them, they almost lost their despair. Especially when they lost hope after having a glimmer of hope, it was even more despairing!

"The tools are not handy."

Bai Yuqi was a little disappointed. He thought that [Separation Technique] could separate all impurities, heavy metal ions and toxic substances.

Unexpectedly, although [Separation Technique] can play a certain role, it is far from reaching a very fine level, at least it cannot separate heavy metal ions and toxic substances.

"Real person! What tools do you need?"

Yang Tieniu, who was squatting next to Bai Yuqi and watching him do the experiment, stood up with a cry, the scars on his face turned blood red, and the blood vessels around him were pulsing!

Bai Yuqi, who was startled by his surprise, thought for a while and said: "Tools used to crush rock brine, clean fine sand, fine cloth, activated carbon... uh, charcoal, what else can I

Think about it?"

Is it finally time to come up with the "black technology" of the time travellers?

The other senior time travelers are all like encyclopedias. They can dry salt, make wine, boil soap, burn lime, and make cement. They can do everything.

But when I arrived at Bai Yuqi's place, I only remembered some scenes I had read in novels. I didn't remember the process very clearly, so I could only try it first.

Yang Tieniu turned around and ran towards the village down the mountain. At this moment, the system projected: [Recommended activation spells: [Refining], [Extraction]]

"Eh~? Just wait!"

"Let me try it first, and then you go back to get the things, so as not to have to make another trip later!"

Bai Yuqi was stunned, and quickly called back Yang Tieniu, who was almost going crazy because of the fact that he could refine salt from poisonous rock brine.

[Refining Technique] and [Extraction Technique] were activated, and the previous small pile of gray-brown salt powder was cast. [Refining Technique] refined the heavy metals in the salt powder, while [Extraction Technique] only extracted the salt.

share.

"It seems like it's done?"

Bai Yuqi looked at the remaining handful of powder as white as snow with uncertainty.

Yang Tieniu excitedly grabbed a handful of salt powder and stuffed it into his mouth. Although he grinned at the salty taste, his eyes lit up and he shouted excitedly: "It's so salty! There's no bitterness or astringency at all!"

"What the hell? Are you going to eat it?"

Bai Yuqi stared at this scarred man with dumbfounded eyes. Does he have such a heavy taste?

Before he could stop him, Zhang Xiaoshan and Gou Zi acted as if they had an advantage and didn't take advantage of the bastard. They grabbed a pinch of salt powder at lightning speed, stuffed it into their mouths without hesitation, and followed the others.

Hu Xiao shouted: "It's salt! It's really salt! Snow-white salt! It must be fairy salt!"

Did the gods provoke you? Why do you blame the gods for everything?

Get some water and you call it "fairy water", get some salt and call it "fairy salt", then if I fart, are you going to call it "fairy fart"?

In fact, Bai Yuqi was not completely sure that he could completely escape the heavy metal ions and harmful substances in the rock brine. He was originally thinking about finding some small animals and conducting biological experiments first.

But before he could say anything, these three animals, big and small, volunteered to serve as guinea pigs. If they were eaten to death, wouldn't it damage his reputation as the "Emperor and Prince of Heaven"?

System projection: [Recommended activation spell: [Detect Poison]]

Bai Yuqi quickly activated the skill recommended by the system and released it on the remaining salt. If he didn't hurry up, the dog would jump on the stone and stick out his tongue to lick it.

[Detect toxicity] A layer of hazy light appears on the salt powder. The greater the toxicity, the darker the color. The smaller the toxicity, the lighter the color. It is clear whether it is poisonous or not.

Looking at the almost milky white light, Bai Yuqi breathed a sigh of relief, finally not poisoning the three animals.

It seems that his idea is correct. It is indeed possible to extract non-toxic salt from rock brine through the effect of skills.

However, due to the power of skills and limited mana, only a small amount of salt can be produced for the time being.

It seems that it is necessary to combine traditional salt-making methods with skills. Otherwise, it would be unrealistic to obtain a large amount of salt by just relying on him to refine the salt using skills.

"Master! Please give your orders quickly!"

Yang Tieniuji's eyes were all blood red.

But he was extremely excited and shouted: "What tools do I need? I'll go back to the village to get them for you!"

"Stop making noise! ​​Let me think!"

Bai Yuqi scolded and stood next to the bitter spring and began to think about it.

In fact, it is not difficult to extract non-toxic salt from rock brine and filter impurities. What is difficult is how to separate out heavy metal ions and harmful substances.

If mana were not limited, the saturated solution that could be processed at one time was limited.

In fact, he only needs a [Dehydration Technique] and an [Extraction Technique] to extract salt from the rock brine.

Otherwise, why do you think he would break the dirty rock bittern into pieces and then melt it?

This is because although the water in the bitter spring is very salty, it has not reached saturation.

In order to maximize the effect of his skills and save mana, he had to go through a series of complex processes first.

However, the first few processes can be replaced by traditional processes.
Chapter completed!