Liya's plump lips slowly drew a mysterious smile, "Everything is knowledge." What you see and hear is knowledge. ”

"What do you mean?" Xia Qiya's thick black eyebrows cycled, like two pairs together, full of confusion, the only thing she had learned since she was a child was to fight.

"Maybe you don't understand. Leah blinked, pulled out a copper-shelled shotgun from the small leather box on her waist, a specially made ammunition magazine, and pulled out the close-fitting short-barreled shotgun from her waist and placed it across the table, "Have you ever seen this weapon?"

"An iron rod with a handle?" Xia Qiya pouted, "I'm afraid, this can only be used to beat cats and dogs." ”

Leah smiled and didn't speak, she opened the safety bolt by herself, broke the shotgun, loaded the shotgun into it, and raised her hand to make a shooting gesture, "It's this kind of unsightly thing, as long as it hits the head, it can easily take the life of an orc warrior." ”

"Huh?" Xia Qiya leaned closer, and couldn't see anything special about this stick, "You didn't lie to me, did you?"

"I'm not going to cheat on my friends. Ria reopened the shotgun, took out the bullets, and showed Shakia the basic structure, "In your eyes, maybe this is like two iron pipes. But in reality, there is much more knowledge contained in it than you know about weapons. Swords, bows, crossbows, lances, daggers, etc., are simply not comparable to them. ”

"Is it so powerful?" Xia Qiya looked incredulous, "What kind of weapon is this?"

Leah glanced at her meaningfully, and slowly spat out a sentence, "Its name is the Orc Hunter." And the one in my hand is only the least powerful one. The other is more powerful, and can easily defeat orc warriors from a distance of twenty meters. ”

"Magic, or witchcraft?" said Xia Qiya, half-convinced, "This must be a magician, or a wizard to use it, right?"

"It's knowledge. Leah repeated, "There is no need for a magician, and there is no need for a wizard. A sturdy farmer, with a little training, can be easily used. ”

Xia Qiya was completely choked, her eyes widened, and it took a long time before she held back a sentence, "I always feel that you are lying to me, that is an orc warrior." Not an orc child, a farmer, how is this possible?"

Indeed, for Shakia, Leah's description is simply too exaggerated, exaggerated to be unbelievable.

Liya lifted the door curtain, looked at the heavy night, and smiled, "It's too late today, it's easy to disturb others." Tomorrow, I will show you personally, and your eyes will tell you whether I am lying or not. ”

"Really?" Xia Qiya's eyes were filled with curiosity, for fighters, the charm of weapons was extremely attractive.

"Of course. ”

"Then I'll sleep with you here today!" Xia Qiya smiled, her eyes aimed at the orc hunter in Liya's hand, and rubbed her hands, "Liya, that, can I play with it?"

"No problem. Leah graciously handed the orc hunter into her hand, but lit up the shotgun, "I can't give you this thing, there will be an accident." ”

"Uh-huh. Xia Qiya wiped her hands on her clothes eagerly, took it solemnly, looked up and down, left and right, and then put her eyes on the muzzle of the gun, trying to see what mechanism was hidden inside.

"That's right, Hunter. Taking advantage of this time, it is a good time to inquire about the news, and Leah will not miss it, "I have all sorted out my things here, why don't you tell me about the orcs, okay? You know, it is about the survival of the Black Stone Collar." ”

"No problem!Ah, by the way, do you have anything to eat here?I'm hungry in the middle of the night......"

"Yes, Luna's wisdom cake is just a little cold. ”

"It doesn't matter how cold it is, as long as it fills your stomach. ”

......

The selection of blackstone step one screening, that is, according to the size of the blackstone to distinguish, the screening method can use the wooden strip nailed with the same hole of the plane screen, with wooden stick support, on the inclined plane screening.

Step 2 crushing, that is, the large piece of black stone is crushed, forming a suitable size, and the crushing method can use stone grinding, or a simple crushing device, which is composed of a stone hammer, a support, a pressure rod, a pull rod, an iron hook, and a structural diagram is attached below.

Step 3: Choose a delicate blackstone ...... in the groove

The sun is warm outside the tent, and the curtain is lifted to let in bright sunlight. Qin Song was holding a quill in his hand and was writing and drawing on a piece of papyrus.

The so-called selected black stone is actually coal washing. For the current Black Stone Collar, it is about to be used to talk about the large number of displaced people in the town, and the food can be dealt with for the time being, but the construction cannot be delayed.

If there is no shelter in the bitter cold of winter, the fate of these displaced people will not be much better, and they will not stay here and wait to freeze to death.

The operation of the brick factory tends to be normal, but the output has not been able to increase, and it is not enough at all. The reason for this is that there is a huge flaw in the production of coal.

First of all, there is the quality of the medium, although the black stone collar is an open-pit coal mine, but the coal and coal gangue are mixed together, but also contain water, ash, sulfur and phosphorus, one-size-fits-all collected coal, the combustion efficiency is extremely low, but the difficulty of transportation is not light.

Therefore, it is imperative to increase the steps of coal preparation, which can not only greatly improve the quality of coal, the efficiency of combustion, but also reduce the pressure of transportation. The same selected coal can also be used for heating and coke.

Coke is an important raw material for ironmaking.

There is also a particularly important reason, and that is fertilizer!

Coal is also used to make ammonium sulfate, a nitrogen fertilizer, and the principle is very simple, that is, outside the middle of the chimney, hang a large wooden barrel, dig a hole at the bottom, install a water spray hole, and connect with the small hole in the chimney. When coal is burned, the water vent valve is opened, and the water is sprayed into the chimney, which will have a chemical reaction with the soot and become a mixture of soot and water, that is, ammonium sulfuric acid solution, which is collected and cooled, heated and cooled again, which is the original ammonium sulfate fertilizer.

Ammonium sulfate is an excellent nitrogen fertilizer, commonly known as fertilizer field powder, which can be used as base fertilizer, top dressing and seed fertilizer, which is widely used, high-quality and reliable, and can make branches and leaves grow luxuriantly, improve fruit quality and yield.

With ammonium sulfate, it means that there is phosphate fertilizer, and the manufacture is also very simple, using the snail shell, mussel shell and shell in the river, etc., with fire into powder screening, mixed with human urine, and then add ammonium sulfate and mix well, it is phosphate fertilizer.

As for potash fertilizer, it is simpler, bones contain phosphorus, mobile animal bones, livestock bones, snail shells, mussel shells, plant ash, can be made into simple potassium fertilizer.

The three basic fertilizers of nitrogen, phosphorus and potassium, plus river mud, pond mud and human and animal manure fertilizer, can meet the fertility part of most farmland.

Food and housing are the core of the problem of food and clothing.

Coal can not only solve the energy problem, but also solve the heating problem, and the derived products can support the subsequent metallurgical and chemical industries.

Therefore, Qin Song pondered for a whole day, constantly studied the difference between refined coal and coal gangue, and finally decided to use their different proportions to choose the most simple and feasible coal washing method - trough coal washing method.

The so-called tank coal washing method, in fact, is similar to the principle of rice washing, that is, the use of impurities such as refined coal and coal gangue, sinking in the water at different speeds, the use of the impulse of the water flow, layering, and finally complete the dehydration.

The simple and feasible solution is to dig a water tank near the open pit coal yard in the Ness River to direct the impulse of the river water and screen the refined coal.

Rubbing his sore wrist, a selection of blackstones is basically completed, and the difficulties and doubts of each step, Qin Song made notes, believing that Sir Weimar can stop the manpower and complete the procedure.

Looking at the outline with illustrations, Qin Song smiled with satisfaction at the corner of his mouth.

"Qin, are you there?"

Alice, dressed in a beautiful witch dress and cashmere underpants, stood in front of the sun, her blonde hair shining with a hint of sorrow at the corners of her mouth.

"What's wrong? Alice?"

"The bad news, we're running out of ingredients. Alice walked in a little unhappily, "Whether it's creating an anti-orc blaster or an orc sniper." We don't have much material left. ”

"That's a real problem. Qin Song stood up, looked at Alice's sparkling little face, and said unhurriedly, "But there is no need to worry so much." I've seen the general distribution of minefields, and if the number of orcs is around three hundred, it should be no problem to defend it. ”

"But. Alice pursed her mouth, not in a high mood, "Daotan Town has also been attacked by orcs, I'm afraid that even if there are gold coins to buy materials, no caravan will dare to send them." Moreover, the Anti-Orc Blaster, although mostly used low-quality cast iron, also costs a lot. It is not yet possible to recycle. ”

"Alice, come out for a walk with me, okay?" Qin Song did not give a direct answer, if the problem of iron-making blast furnace is not solved, it is impossible to smelt steel, even if it is earth-based iron-making, ore is needed.

"Hmm. Alice replied sullenly, the threat of the orcs always weighed on her like a big rock.

All the way along the gurgling Ness River, Qin Song and Alice walked side by side in the warm autumn breeze, although they were silent with each other, but the long-term tacit understanding made them trust each other and attach themselves to each other.

Looking at Qin Song's angular side face, there was a beating gaze in his eyes, revealing a kind of confidence and indifference.

Alice's depressed mood slowly calmed down for some reason.

It seems that just standing by his side has an inexplicable sense of peace.

It was a very wonderful feeling, Alice couldn't understand what it was, in her mind, Qin Song was both her teacher and her best friend, they could talk about knowledge happily together, experiment tacitly, and eat together warmly.

Yes, albeit with different looks.

But the hearts seem to be connected.

。