After taking the mineral salt back, it was Mu Bai's turn to be busy.

To refine table salt, activated carbon must be available first.

But to make activated carbon, you must first have charcoal-making utensils.

There is almost nothing left in the caves of the tribe.

Therefore, although refining salt is not a sophisticated technology, it is a huge project for Mu Bai at this time.

After coming back, the wild cow was looking forward to eating salt.

But after seeing that Wu was busy, the pile of mineral salt was still motionless, and he was anxious in his eyes.

And he doesn't understand Wu's actions at all!

"Mang, what the hell do you say Wu is doing? Didn't you say refining salt? ”

"Let's just make a big stone pot first, maybe it can be used, but why are they still tinkering with wood now?"

The bull was puzzled.

The stone pot that had just been made was so huge that he thought it was for boiling water, but he didn't think that Wu had put wood in it.

He also set it on the fire and burned it vigorously.

Now the cave is filled with the smell of burnt fire and smoke.

Put wood in a pot and boil, it's unheard of!

"Shall we eat wood tonight?"

Suspiciously, he took a piece and examined it carefully, it was indeed just ordinary firewood, and it was no different.

"Wu naturally has her reason for doing things, just watch it carefully!"

Mang didn't have time to talk to him, so he only said a perfunctory sentence casually.

This kind of work is stupid at first glance, so it's very good for the witch to teach them, is it possible to expect the witch to do it all the time in the future?

"Yes, yes!"

The brute bull responded, but muttered in a dissatisfied voice, "I don't just ask!" Actually, you don't understand it like I do? ”

Mu Bai didn't know them, and he didn't have time to answer questions.

Experiments on adsorption and refining using activated carbon have been done for a long time in school, but the raw materials are ready-made.

The first time I had to make my own materials, I didn't expect it.

Even if she knows the process, she may not be able to succeed or has no bottom in her heart.

After all, there is no calcium chloride needed for charcoal activation.

Alternatives, bleach, are not either.

She had recently discovered a fruit with a very sour taste, similar to the lemon in her own world.

This is what she relies on to make activated charcoal now, and I don't know if it can be done.

She first put the wood in a stone pot to charcoal, and this process alone took most of the day.

The cooled charcoal is then washed with water to remove dust and other residual debris.

The next step is grinding.

The clean charcoal is ground into a powder to facilitate the subsequent charcoal activation.

After she mixes the sour fruit juice with the charcoal powder in a three-to-one ratio, she will have to wait and see what the result will be.

At first, the tribesmen were excited.

But as time goes by, most of them are like bulls.

Watching Wu fight with some wood, he slowly lost his patience.

One moment it is burned with fire, and the other it is washed with water.

At first, it was a novelty to see that the wood had turned into a small black powder, but when Mo Bai had left the mixture mixed with sour fruit juice for a day and a night, and then put it in the pot again to roast, everyone gave up.

Without the slightest curiosity, he was able to turn a blind eye to what Wu did.

Of course, it's not right to say that all of them are wrong.

At least Mang from head to tail.

It's just watching without saying a word, and I don't know if I learn it or not.

……

Although it was quite a long time to wait for Wu to make salt, the trap she had set up under the cliff was very useful.

The bull came early the next morning, and harvested five split-billed rabbits, as well as a scimitar-horned sheep that fell and broke its hooves.

Originally, he was in a hurry to catch it back, and he was going to let the tribesmen who had eaten dried meat for many days in a row fight for tooth sacrifices, but they were collected by Wu and put into a small hole under the cave to raise.

They are also fed with grass leaves picked by the hot spring pools every day, and drink clear spring water that has not frozen in the puddles.

That treatment is very bullish.

"I don't know what to gain from the trap today!"

The person who patrolled the trap with the bull today is Yu.

He is the group of people in the tribe whose combat power is second only to the bloodline warriors, and if he can accumulate enough strength and blood in this rainy season, maybe when the dry season comes again, he will be able to break through.

"What's the use of receiving? Witches won't let us eat them anyway. ”

It is a dangerous thing to collect prey in a cliff trap by a puddle.

The half-grown cubs who chirped them were all ordered to nest in the cave, and they did not dare to let them out.

Although when Mang assigned the task, the wild bull still preempted Dashi, Black Hawk and Cangmu, but when he thought of the whereabouts of his prey, he was not very interested.

"It's not impossible!" Feng Wenyan's eyes rolled.

"Witches only feed the living, but what about the dead? Can you still not eat it? ”

Tender and fresh rabbit meat and mutton are many times better than firewood and dried jerky.

Behind the scenes, everyone looked at the few raised in the small cave and drooled.

"If you want me to say, it's enough to serve those few in the cave, but you can't add more!"

Toyomoto tried to get the bull to agree with his idea, but who knew that the next moment the bull would be angry.

"Do you want you to say, do you want you to say?"

"I don't even know when you became a witch?"

"Then tell me, is it her or you who has made us all live a good life during this time?"

"I ...... Let's talk about it! Feng was stunned by the question, but fortunately he reacted quickly, "Of course it's a witch." ”

"If you want to eat meat, listen to Wu honestly! Wu's decision, everyone listens to it, Wu can still harm everyone? ”

"That's, that's!"

The momentum of the bloodline warriors is also quite fierce, as soon as the brute bull gets angry, Feng Li's legs are weak, where do you dare to bite the tongue?

Besides, he didn't want to disobey the witch.

It's just that I'm greedy, and I want to make peace with the bull.

Who would have thought that such a big mold would be touched?

Didn't you see that the leader Mandu listened to the words of the witch?

Besides, as soon as Wu made a move, he directly froze more than a dozen gray-bearded wolves, can his life be harder than that of gray-bearded wolves?

……

In the cave, Mu Bai has made activated charcoal and is preparing to start refining table salt.

She left the trap behind her, not knowing what was going on in her people's minds.

After all, domesticating domestic animals and livestock in captivity is not something that can be achieved overnight.

Whether it's a split-billed rabbit or a scimitar-horned sheep, all of them are wild and difficult to change at present.

The few animals locked up in the cave, even if they were herbivorous animals, were still aggressive, duels at every turn, and all of them were raised to their deaths, despite the good food and drink.

When Feng found her and Mang, and offered to take on the responsibility of breeding, Mu Bai's heart was very happy.

I didn't expect that it was the beating behind the back of the wild cow that created the breeding experts in the tribe later.