The sun is vast, the green mountains are faint, and although the sun is hot, there is occasionally wind on the top of the mountain.

Because the two hills are not far apart, and the ancients had strong eyesight, everyone could see from a distance with their eyesight and could fully understand every move opposite.

...

Here on Xiaoyan Mountain!

After Li Yun collapsed the cliff, he first selected a large stone the size of a millstone, then swung the hammer and thumped it twice. The big stone was smashed into pieces by him in a blink of an eye.

boom!

Li Yun threw the sledgehammer to the ground.

He turned his head and glanced at Cheng Chumo, and suddenly waved to him, "Come here, I'll teach you how to extract refined salt..."

Cheng Chumo hurried forward, his eyebrows and eyes full of excitement. A group of Cheng's servants and a hundred refugees came over hurriedly with all kinds of tools.

"I've all been optimistic..."

Li Yun coughed, bent down and picked up a few stones that were smashed by him from the ground, and said in a deep voice: "If you want to refine salt in the stone salt mine, the first step is to smash the big stone. The more you smash, the better it is. The easier it is to break, the easier it is to save trouble. If it can be smashed into powder, then I will be your ability..."

Everyone was stunned and looked at each other foolishly.

Li Yun smiled and said, "Of course, no one in the world has such ability. If we want to turn stones into powder, we need tools..."

Cheng Chumo quickly inserted and said quickly: "Master, don't worry, those things have been made, all of them were cast according to the drawings you gave them, and were secretly refined by my Cheng family craftsmen."

"good!"

Li Yun nodded and asked, "Where is the thing?"

Cheng Chumo took a few steps and walked to a huge rock not far away. The little overlord reached out and lifted a piece of coarse cloth, revealing several utensils hidden underneath.

Under the vast sunlight, a faint light slightly folded out. Everyone stared at the objects and looked carefully, and found that these things were large iron cast objects.

As we see, first there were two huge iron cast grinders.

These two iron mills are black and must be as heavy as thousands of pounds. I don’t know what the Cheng family used to make such a huge iron mill onto the mountain.

Next to the iron mill is a row of ten large iron pots. This is not the small saucepan purchased by Li Yun, but the large army pot used by the army.

One pot can cook for 50 people.

In addition to iron mills and iron pots, there is also an iron pipe-like utensil. The upper end is connected to a huge iron bucket and the lower end is also connected to a huge iron bucket. The middle of the iron pipe is separated by an extremely fine yarn mesh, which is a piece of yarn mesh every three inches.

"Very good. With these things, salt refining is not difficult..."

Li Yun came forward to observe, nodded with satisfaction, and suddenly pointed at the iron pot and said to everyone: "You can do it together, first set up the millstone, then set up the iron pot, and send a team of people to fetch water."

A group of servants and refugees rushed forward and shouted horns to support the two iron mills.

At this time, Li Yun returned to the collapsed cliff and kept picking up the stone salt mine that he smashed into small stones.

He picked up five or six times back and forth, and all of them were filled into the hole of the big iron mill. Then Li Yun shouted softly and suddenly turned the iron mill hard.

Crunch, crunch!

The iron mill makes a harsh and harsh sound.

...

"What is he doing?"

"Grind stones with iron?"

On the hill not far away, Li Shimin and others were confused. The emperor pondered for a moment and guessed, "Is it necessary to grind it into stone powder?"

As it turns out, the emperor guessed correctly.

But seeing Li Yun rotate the grinder hard, he quickly grind all the small stones. Powder kept appearing under the grinder, and a color of green glaze flashed under the sunlight.

Cheng Chumo quickly stepped forward and collected the powder with a utensil in his hand.

At this time, the refugees who were taking water had returned, put down the bucket and waited silently. Li Yun and Cheng Chumo carried the stone salt powder together, and then poured it into the large iron bucket above the iron pipe.

"Pour water, soak..."

Li Yun shouted lightly, reached out to wipe the sweat from his forehead, and smiled and said, "The next time I have to wait for a cup of tea. It just so happens that the weather is a bit hot. Let's find a shade to avoid it. I will explain the principle to you again so that everyone will know the reason but not the reason..."

While speaking, the refugees had already poured water into the iron bucket, and everyone heard a sizzling sound of bubbles, as if the clear water was producing a subtle fusion with the stone powder.

Li Yun explained in a deep voice: "The content of stone salt is quite mixed. The first step is to make it into powder, and the second step is to melt it into water. After a cup of tea, the salt is all in the water and the impurities are left. This is called preliminary filtration..."

Cheng Chumo's eyes shone, and suddenly became smarter and shouted excitedly: "Master, I understand what you said, hahaha, salt is melted into the water, and when the water is dry, it turns into salt. Ahhaha, it turns out that making salt is so simple?"

Li Yun looked at him angrily and smiled bitterly: "If it was so easy, would the Wang family in Taiyuan not have thought it would be?"

Cheng Chumo was stunned immediately.

Li Yun slowly walked to the side of the iron pipe and looked at the situation of the large iron bucket. After watching for a long time, he suddenly turned on the switch of the iron bucket. He saw the water flowing along the pipe, filtering continuously through layers of gauze.

When the salt water flowed to the iron bucket below, no stone powder was left in it. Everyone was curious to look forward and found that the salt water had a hint of brown glaze glaze color.

Li Yun pointed to the salt water and said, "This is just a preliminary filtration, which removes stone powder impurities, but the water still contains impurities, which is what you call stone salt poison."

poison!

Everyone subconsciously took a step back.

Cheng Chumo swallowed nervously and whispered: "Master, how should this poison be removed?"

Li Yun glanced at him and said, "Where is the charcoal you prepared?"

“Here…”

Cheng Chumo hurried to another place, uncovered a piece of coarse cloth again, and shouted: "I got ten trucks of charcoal in total, and secretly transported them up the mountain last night."

"Get a few pieces to take them!" Li Yun shouted.

Cheng Chumo quickly agreed, bent down and chose a few pieces of charcoal to run over.

"Smash all the charcoal and wrap it in gauze..."

"Okay master!"

Cheng Chumo found a sledgehammer and smashed it hard.

Soon the charcoal was smashed into pieces and then carefully wrapped in gauze.

Li Yun threw all the charcoal into the iron barrel, and everyone heard another sizzling sound, and there were fine bubbles in the water, which made everyone amazed.

"Now, stir a cup of tea and use your best strength. The faster the mixing, the more beneficial it is."

"Okay master!"

Cheng Chumo turned into a well-behaved and agreed, and picked up a stick and stirred it hard at the iron bucket.

The brown color in the salt water gradually became lighter. When the water was free of impurities, Li Yun stepped forward and dipped it with his finger.

It tastes good when put in your mouth, it's only salty and no bitterness.

This is the charcoal that absorbs the metal toxins in the stone salt mine completely, and there is no longer any impurities left in it.

"Cook the pot, boil the fire, boil salt water, wait for the crystallization..."

At this point, Li Yun himself was also a little excited. After all, he had only checked the method of salt making on later generations on the Internet. He had no idea whether he could refine fine salt.

Now that he saw the salt water clear, he was already very sure.

On the distant hill, Li Shimin subconsciously clenched his fists. Success or failure was the emperor, and the emperor felt nervous.

Suddenly someone came over and whispered: "If this method can really turn into salt, the secret recipe must be strictly controlled. Your Majesty should make a decision early and not let a child go..."
Chapter completed!