Twenty miles away overnight, he came to the foot of a mountain, followed closely by the people of the Yan tribe, turned around a few times, and found a mountain col, both sides of which were full of weathered cliffs, and the white stones were very conspicuous in the moonlight.

"That's right! Here it is. Zou Yu jumped off the war horse, walked over and dipped a little with his fingers, and nodded to Zhang Zhongjian after tasting it.

"Okay, camp, rest here tonight!" Zhang Zhongjian ordered loudly, and then waved his hand to his subordinates.

"Yes!" The warrior replied, and then dragged the Tatar people down, and without much effort, two screams were heard in the distance.

Trying not to think about it, Zou Yu turned his head to pay attention to the mountain, and looked around with the bright moonlight, a stream in the distance flowed down from the mountain, the sound of the water was murmuring, and there were many trees under the mountain, which could be said to be a natural treasure.

"Leave me a hundred people, and set up a sub-base here, Uncle Zhang, you check if there are any powerful enemies nearby." Zou Yu found Zhang Zhongjian and discussed.

"There is no problem, there are only sixty war horses, I will take sixty people away, and let people go back to say to their families, and the cattle and sheep will be raised here, so as not to run back and forth." Zhang Zhongjian said.

"It's okay, Uncle Zhang, take a look at this!" Zou Yu took out the wrapped medicinal herbs from his arms and put them in front of Zhang Zhongjian.

"What kind of herb is this? Important? Zhang Zhongjian asked puzzled.

"This is called ginseng, also called earth spirit, grass and Dan, there are three treasures in the northeast, ginseng, deer antler, and Ula grass. This is one of them, it has a strong tonic effect, and even saves lives, and the life hanging by a thread contains a tablet, which can last more than six hours. Thinking of the wild ginseng that was out of reach in the future, Zou Yu was a little excited.

"So good?" Zhang Zhongjian asked in disbelief, his eyes widened.

"Yes, this kind of thing is available in Goguryeo and Wadao, but the best effect is in this white mountain and black water, and in other places, the effect is more than a step worse." Zou Yu replied in the affirmative.

"Good things, I will exchange more with the Ya clan in the future." Zhang Zhongjian nodded, since Zou Yu said it was a good thing, then he must do more.

"Not only that, as I said just now, there are three treasures in the Northeast, ginseng, deer antlers, and Ula grass!"

"Deer antlers, ula grass, what are they? I know that deer blood is a great tonic, and the venison is also very tender. Zhang Zhongjian asked curiously.

"Deer antler velvet is the horn on the head of the deer, you can catch some and raise it, take the antler velvet, and after two years he will grow it again, which has a strong effect of replenishing qi and blood, as for the Ula grass, it is this kind of weed." Zou Yu said as he squatted down and took out a handful of weeds.

"Isn't this a weed, cattle and sheep still love to eat, do you want us to eat this?" Zhang Zhongjian asked with a frown.

"How is that possible!" Zou Yu couldn't help but roll his eyes, "This is for warmth, this grass is cut, beaten hard, dried in the sun, sewn into clothes or shoes, the warmth effect is very good, we lack materials, can be used to make quilts." ”

"Good stuff! I'm struggling with how to spend the winter, and you've solved a big problem. Zhang Zhongjian's eyes lit up and he said happily.

"Without further ado, let's arrange for someone to harvest tomorrow."

"Okay, I'll take fifty people to find out the news, and by the way, grab one or two more, and keep the rest for you, you just look at the arrangement." Zhang Zhongjian made a decision.

……………

As soon as the morning dawned, Zhang Zhongjian led people to set off, Zou Yu arranged for two people to go back to the village to report the news, and the rest of the people were part of the people who mined cliff salt ore, and part of them harvested Wula grass, cut down trees, and collected wood and fire.

Zou Yu thought of a very simple solution, because the melting point of salt is very low, even if it is warm water, it will be allowed into the water, so he asked people to collect the ore, then crush it, although the conditions are simple, but the wisdom of the working people is infinite, stone to stone, so that the ore from large to small, and then from small to broken, and finally all the size of a finger, Zou Yu feels that it is enough.

Dig a big pit in the ground, several people in a group, carry a tree, tamp it hard, spread it around with cowhide and sheepskin, and a puddle of stagnant water appears. Then fill the puddle with water, put in the gravel, and stir vigorously with a stick.

Stir the ore for a while, and then continue to put it until there is too much ore in it to stir, and then stop, and then the water in the pool has become turbid and thick.

People were asked to fill all the water, because there was no big pot, so they had to use the clay pots and bowls of the march, and slowly fill them, and then a wooden barrel that had just been made was set up, and on the earthen stove dug in the ground, a fire began to be made.

The reason is very simple, that is, first melt the salt in the ore, then cover the barrel with two clothes, pour the brine and filter it, so that the impurities are removed, and then start to boil the water to evaporate as much as possible, and in the process, keep adding the stirred brine to it.

Because it is a wooden barrel, it is heated through stones, so the fire below is very large, and most of the wooden barrels are wrapped in the ground, and the temperature is very slow at first, and when the soil is dry, it starts to transfer heat, which is actually not slow.

After an hour and two hours, there was finally only a little bit of water left in the barrel, which was extremely thick, and there were already many white particles in the barrel, attached to the walls and bottom of the barrel.

After a while, the water slowly disappeared in everyone's eyes, and a layer of white appeared under the eyes, like snow, Uncle Wang disregarded the temperature, reached out and twisted a little, and threw it into his mouth.

"Salt! Salt! It's the best refined salt! In the expectant eyes of the onlookers, his lips trembled a few times, and Uncle Wang shouted excitedly.

"Roar!" The crowd erupted into an excited roar, in this era, salt and money are hard goods, and being able to make salt is the same as making money, of course, it is exciting, especially if you make it yourself.

Zou Yu was equally filled with a sense of accomplishment, watching them lift the barrels, carefully scrape off the salt, and pile it on a sheepskin. After two or three hours of busy work, only about a pound of salt, which may seem like a small amount, but it does not affect everyone's mood, and in their opinion, it is completely worth it.

The snow-white salt, in the sun, is a little dazzling, and many people can't help but try a little to confirm that they are not mistaken, and the eyes that look at Zou Yu again have become different, mixed with admiration and respect. In the past, I may just think that he was smart and had many ways, so I trusted him, but now I have a feeling of being shocked, the kind of person who is one level higher than himself and not at the same stage, and this mentality gradually appears in the hearts of others.

This is not to alienate Zou Yu, but to respect him more, to respect knowledge and ability, just like a primary school student, facing a professor, admiring each other from the bottom of his heart.