After hearing Na Gu's words, Ren Baqian was more certain.
When he heard about the poisonous brine, he already had an idea. Although it was poisonous, everything in the world was made up of ions and molecules. Under certain conditions, there would definitely be a chemical reaction.
This meant that the salt could be extracted or the toxicity could be eliminated.
The black water was also emitting the smell of rotten eggs. It was very likely to be a kind of black brine. This kind of thing existed on Earth, and it had been refined and used by the ancient people using the crystallization of wisdom nearly 2,000 years ago.
This was the predecessor of the famous "well salt." After understanding the situation in this world, Ren Baqian specially researched all kinds of information about well salt. In fact, it wasn't just the sea that produced salt. People in Sichuan, Tibet, and other places used various methods to extract salt from nature, which was a necessity for daily life.
There were also various methods. Sunning salt from natural brine on the surface and salt crystallization from saline-alkali land were the simplest. Without these conditions, there were many other methods to produce salt. Well salt was one of them.
Among them were black brine wells, yellow brine wells, and stone wells. They mainly extracted seawater that accumulated underground after the evolution of the earth's crust. Or in other words, metamorphosed seawater.
The black brine well referred to the poisonous black brine. This metamorphosed seawater was usually 300 meters underground. However, due to earthquakes or other reasons, it would occasionally form springs or pools.
It was precisely because of this that Ren Baqian immediately thought of this when he heard them mention the poisonous brine.
"Do you have that brown brine there? It's also salty and poisonous, "Ren Baqian immediately asked.
The reason why he asked this was because black brine contained a large amount of sulfate and yellow brine contained barium. Both types of brine were poisonous to the human body. However, if they were mixed together in a suitable ratio, the sulfate and barium could be converted into barium sulfate crystals. This would eliminate the toxicity and allow the extraction of well salt.
Of course, the premise was that the black pool was indeed black brine. Furthermore, there were no other poisonous ingredients in it.
According to the short description just now, Ren Baqian felt that the first possibility was very high. As for the second possibility, it was hard to say.
"No." The burly man replied coldly. Even though he knew that Ren Baqian worked in the beast park, it only made him less hostile. It didn't mean that he would treat Ren Baqian kindly. In fact, Ren Baqian's thin and weak body looked similar to the people of the Yun Nation and Great Xia. He didn't like people like him. This had already penetrated deep into his bones.
"Yes!" Na Gu suddenly thought of something and turned around to refute the burly man. "The last time we met in the mountains, Da Gong was so thirsty that he drank a mouthful of water. After that, he didn't have any energy for the entire afternoon and shot an arrow straight at the toothed beast's face. You were almost pierced through by the beast. Wasn't that water what he said? “
"Hmph." The man snorted coldly and turned his head away.
Na Gu turned to look at Ren Baqian and said, "There's a crevice in the mountain. The water there is exactly like what you said, but it's a little brown and can't be drunk."
Ren Baqian was delighted to hear this.
He was just asking in passing. He didn't expect that there would really be one.
"May I know where your village is?" Ren Baqian asked.
"What are you doing?" Na Gu immediately became vigilant.
"I don't know where your village is. Where can I find the Black Water Pool and the other water?" Ren Baqian asked.
"Why are you looking for this thing? Do you think you can use it as salt? I already told you that it's poisonous. "Na Gu looked at him suspiciously.
"Since it's poisonous, there must be a way to detoxify it. Everything in this world reinforces and counteracts each other. "
"Hmph, I don't believe you!" Na Gu said straightforwardly.
"You have to try to find out. If you really want to look for it, I can hire you as a guide and use salt as revenge. How about that? "Ren Baqian tried to tempt her.
Na Gu rolled her eyes and stuck out a finger. "I'm a good hunter. If you want to hire me as a guide, you will need at least half a catty of salt a day."
Ren Baqian looked at her outstretched finger and thought about what she said. He was very curious. If she wanted half a catty of salt, what would she do? Stick out two fingers?
At the thought of this, Ren Baqian subconsciously stuck out two fingers and asked, "How many is this?"
Na Gu was stunned at first. Then, she flew into a rage and asked, "Do you think I'm a fool?" She immediately flashed her fists, which were one size bigger than those of the women on Earth. She didn't forget to bare her teeth at Ren Baqian like an enraged cat.
Ren Baqian estimated the strength of the Dayao people and looked at Na Gu's fists. He estimated that if he was hit in the chest by such a small fist, he would probably vomit his liver out.
"Half a catty of salt, I agree." Ren Baqian immediately changed his words.
"Huh? Well, if you have a good hunter like me as your guide, you will benefit greatly! "Na Gu retracted her fist, raised her head, and proudly said with her chest puffed out.
"Are you really from the beast park?" Na Gu thought for a while and asked again.
Ren Baqian took out a sign from his pocket and said, "Look at it yourself."
"I don't recognize it. I don't understand it." Na Gu spread out her hands.
"I told you long ago that this is Caretaker Ren from the beast park. Do you think he would impersonate you to deceive you?" Tie Dao said.
Na Gu looked at Tie Dao and then at Ren Baqian before saying, "I'll believe you first. Our village is on Nine Peaks Mountain. After you leave the city, head southwest and you will reach there in one day. There is a luoweng horn at the foot of the mountain. If you blow it, I will hear it. "
"What horn at the foot of the mountain? Where can I find it? "Ren Baqian spread out his hands. How was it possible to find a horn at the foot of the mountain? What was the difference between this and looking for a needle in a haystack?
"It's not a horn, it's a luoweng horn. You don't even know what a luoweng horn is? There is a stick erected at the foot of the mountain. The luoweng horn is hanging on it. "Na Gu widened her eyes and looked at Ren Baqian.
Ren Baqian saw that Na Gu was looking at him as if he was an alien who didn't even know what a luoweng horn was. He turned to look at Tie Dao and asked, "What is a luoweng horn?"
"A luoweng is a wild beast in the mountains. It has a single horn and is as fast as lightning. When the horn is plucked from its head, the sound can be heard five kilometers away. "Tie Dao explained.
"Can it really be heard five kilometers away?" Ren Baqian had a doubtful look on his face. What did it mean to be heard five kilometers away? Ten kilometers was about five kilometers. It would take about an hour to walk.
Even if it was in an open space, to be heard five kilometers away would require at least 120 to 130 decibels.
It was probably the sound of an airplane taking off or thunder.
Ren Baqian didn't believe that a horn could be blown so loudly.
Tie Dao smacked his lips and said, "There are usually big-eared monkeys in the village. If they can hear the sound of the luoweng horn from afar, they will know that there are guests coming."
Ren Baqian finally understood.
He turned to look at Na Gu. He wanted to ask her where the luoweng horn was, but she probably wouldn't be able to explain it clearly.
"In that case, let's go back first. If we are going to look for the Black Pool, we will go to Nine Peaks Mountain to look for you."
"Remember to bring salt," Na Gu reminded him.
"I won't forget. In that case, goodbye. "Ren Baqian cupped his hands.
After walking for a distance, Teng Hulu asked, "Caretaker Ren, can salt really be extracted from the Black Pool?"
"It's not extracting, it's refining. As for whether or not it's harmless, it will depend on the situation, "Ren Baqian said. He wasn't very confident and could only say half of it.
"If that's the case, that would be great." Teng Hulu was a little excited.
"This matter requires Her Majesty's approval," Ren Baqian said unhurriedly.
"As long as Caretaker Ren has a solution, Her Majesty will definitely support it," Teng Hulu said. "There will definitely be official positions that will be awarded."
Ren Baqian grinned. This was also one of the reasons why he asked about this matter. Since he was here, he couldn't possibly stay in the beast park and be a caretaker forever, right? Or would he be satisfied by making some items from Earth and earning some money?
If he was in a world similar to ancient China, he might really do that. There was nothing wrong with being carefree.
However, there were too many unknowns in this world. Without a high status, he wouldn't be able to understand too much.
For example, he hadn't seen the kirin until now. It was said that there was someone in the palace in charge of it.
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