"Who says rock brine isn't salt?"

After thinking about it, Bai Yuqi said to Yang Tieniu: "Is there a container for water?"

Yang Tieniu was stunned for a moment, and suddenly there was an unbelievable surprise in his eyes, but he didn't dare to ask out loud with a little fear, lest he get a negative answer.

He quickly untied the basket on his back, took out a bamboo tube, and when he was about to hand it to Bai Yuqi, he retracted it again, pulled out the stopper, and drank a few sips.

He also handed it to Yang Xiaoshan and the dog beside him, and asked them to drink a few more sips, which was a bamboo tube of "fairy water" that he secretly poured from the water tank of Yang Zhao's house, and he was reluctant to waste it.

took the bamboo tube and asked Yang Tieniu to knock down a large piece of rock brine from the rock wall with a hunting knife, and then smashed it with the stone and crushed it into powder.

Half a bucket was filled into a foot-long bamboo tube, and some bitter springs were poured into it, and a saturated solution was stirred with branches.

Bai Yuqi and the others precipitated the saturated solution, carefully poured the relatively clear part of the upper layer into a natural depression on a rock, and then launched [dehydration] on it.

I saw that the turbid saturated solution in the puddle on the rock quickly evaporated at a speed visible to the naked eye, leaving only a thin layer of brown powder.

Bai Yuqi twisted his fingers a little and rubbed it, shook his head and released the [Separation Technique] on it, and some impurities were separated from the brown powder.

The remaining powder turned gray-brown, Bai Yuqi dipped a little bit of his fingers and looked at it, and licked a little bit with his tongue, and after smacking his mouth, he frowned and spit it out, failed.

Seeing Bai Yuqi shaking his head, tensed his body and watching Yang Tieniu nervously beside them, they almost didn't despair, especially after having a glimmer of hope and then losing hope, it was even more desperate!

"The tools don't work well. ”

Bai Yuqi was a little disappointed, he also thought that [separation] could separate impurities, heavy metal ions, and toxic substances.

I didn't expect that although [separation] could play a certain role, it was far from being too fine, at least it could not separate heavy metal ions and toxic substances.

"Real people, what tools do you need?"

Yang Tieniu, who was squatting beside Bai Yuqi and watching him do the experiment, stood up with a snort, the scars on his face were blood-red, and the surrounding blood vessels were pounding!

Bai Yuqi, who was taken aback by him, thought for a while and said, "Tools used to crush rock brine, clean fine sand, fine cloth, activated carbon...... Uh, charcoal, what else do I want to think about?"

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

The other traversers are like encyclopedias, drying salt, making wine, boiling soap, burning lime, making cement, everything.

But when I got to Bai Yuqi, I only remembered some of the passages I had read in the novel, and the process was not very clear, so I could only try it first.

Yang Tieniu turned around and rushed towards the village below the mountain, and at this moment, the system projected: [Recommended activation spells: [Refining], [Extraction]]

"Eh~?

"Wait until I try it first, and then you can go back and get your things, so that you don't have to run again in a while!"

Bai Yuqi was stunned for a moment, and hurriedly called back Yang Tieniu, who was almost crazy with the stimulation of the fact that he was about to be refined into salt by poisonous rock brine energy.

Activated [Refining] and [Extraction] to cast a small pile of gray-brown salt powder from the previous one, [Refinery] extracts the heavy metals in the salt powder, while [Extraction] extracts only the salt in it.

"Seems to have been?"

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

Yang Tieniu excitedly grabbed a handful of salt powder and stuffed it into his mouth, although he was grinning with salty teeth, his eyes were bright, and he shouted excitedly: "It's so salty! There is no bitterness or astringency at all!"

"it?"

Bai Yuqi looked at this scar-faced man dumbfounded, is it so heavy-hearted?

Without waiting for him to stop him, Zhang Xiaoshan and the dog were like bastards who had a advantage and didn't take advantage of them, and grabbed a pinch of salt powder with lightning speed, and stuffed it into their mouths in a panic, and then shouted: "It's salt! It's really salt! Snow-white salt! It must be fairy salt!"

The gods have provoked you? Why do you pull everything on the gods?

Get some water out and you call it "fairy water", get some salt out and you call it "fairy salt", then Lao Tzu fart are you going to call it "fairy fart"?

Bai Yuqi was actually not completely sure that he could completely get rid of the heavy metal ions and harmful substances in the rock brine, and he was still wondering if he would find a small animal first and conduct a biological experiment.

But before he could say it, these three large and small animals volunteered to act as guinea pigs, if Nima ate it to death, wouldn't it damage his reputation as the "Prince of the Heavenly Emperor"?

System Projection: [Suggested Activation Spell: [Detect Toxicity]]

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

[Detect toxicity] shows a layer of hazy light on the salt powder, the greater the toxicity, the darker the color, the smaller the toxicity, the lighter the color, whether there is poison at a glance.

Looking at the almost milky white light, Bai Yuqi breathed a sigh of relief, he finally wouldn't poison the three animals.

It seems that his idea is correct, and he can indeed extract non-toxic salt from the rock brine through the effect of his skill.

It's just that due to the power of the skill and the limited mana, only a small amount of salt can be made for the time being.

It seems that he still has to combine traditional salt-making methods with skills, otherwise it is a bit unrealistic for him to use skills to refine alone, and he wants to get a large amount of salt.

"Command, real man!"

Yang Tieniu's eyes were all blood-red.

But his spirit was extremely excited, and he shouted: "If you need any tools, I'll go back to the village and get them for you!"

"Don't make a noise! Let me think!"

Bai Yuqi scolded, stood next to the bitter spring and began to ponder.

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

If the mana is not limited, there is a limit to the saturated solution that can be processed at one time.

In fact, he only needs one [dehydration] and one [extraction] to extract salt from the rock brine.

Otherwise, why do you think he would break up that filthy rock brine and dissolve it?

This is because the water in the bitter spring is salty, but it does not reach saturation.

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

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

For example, crushing can be replaced by stone mortar and mortar pestle, filtration with a filter device made of cloth, fine sand, and charcoal, and dehydration can also be replaced by boiling.