The next morning, Ruya came to the small blast furnace early, but the old man of iron had obviously arrived before him, and at this moment he had already poured a furnace of molten iron into the grinding tool and was cooling it.

"Uh, you're old enough," Ruya said.

"People are old, feel less, don't get up while they can still get up and do more work, and when they breathe, they can't do it" The old man didn't look at Lu Ya, and threw the cooled iron into the furnace by himself, and pulled up the bellows with all his might.

"You have a good mentality, you have a good mentality" Lu Ya was a little speechless.

"Oh, by the way, uncle, I'll bring you some men in a while, and they will be your subordinates in the future, and then you can just command and sit in charge" Lu Ya finished speaking and walked to the other side.

Feeling a shadow enveloping him, the old man of iron, who was concentrating on beating the pieces of iron, looked back and saw Ruya with a group of strong orcs standing behind him like a wall.

"Aren't these captives, oh, how can you let them come here, what if they want to steal this precious skill. Yes, kill them all" The old man first felt anxious and complained, and then with a hint of madness, he grabbed a half-finished spearhead next to him and wanted to rush over to kill people.

"Don't, old man, wait first, these captives have already signed a slave contract, and I am not going to sell them to others again, in the future, these people are your subordinates, and you don't have to do the dirty work and tiring work yourself, just leave it to them." Lu Ya quickly explained after stopping the old man.

"Huh~ Startle me, Xiao Lu, you should know how important this smelting thing is, in that case, then leave them behind, and ah, it's best not to let other other foreigners know your secrets in the future, otherwise you may not know when someone will be killed or taken away, even if it is a slave, it may be controlled by others, so you must be careful in the future" The iron old man's eyes were serious, so Lu Ya felt a little that he didn't know him.

"I know, uncle, okay, I'll leave a few people to do the converter, and you can just look at the rest of the arrangements."

Lu Ya first let a few slaves transport a lot of clay, and then he personally and commanded these people to make a pot similar to a thermos bottle that is reduced by half in length and magnified dozens of times in volume, and it is simply done with an inclined bracket to be completed, not that Lu Ya does not want to make it bigger, but this mud paste thing is really not very strong, if it is made a little bigger, it is estimated that there is no need to pour molten iron into it, it is estimated that it will collapse by itself, and there are more experimental components at the moment.

Lu Ya has only read the book, and has not practiced, if it can really succeed this time, he will find a way to make it bigger, but at this moment Lu Ya is worried about the raw materials.

"These iron ores, it is estimated that they will be exhausted in a few days, where will I get them then, hey~~ I don't want to, let's talk about it then" shook his head Lu Ya stopped thinking about it, and turned his head and came to the old man of iron.

Long away, Ruya heard the old man scolding.

"Lightly, you damn it, such a big piece of iron felt is about to be smashed by you"

"You two haven't eaten, pull the wind like a girl"

"And you, you can't hold it steadily with a pair of pliers, why don't you just hand it over to him and smash it"

"Hey~ Hurry up, you guys, this fire is going to be extinguished"

"Hey~ I said Xiao Ke, don't be lazy, you see that the iron striker has no strength, I don't know how to give him a pullback spell"

I thought that the old man Tie, who was more resistant to outsiders, actually stood there and did nothing, a pair of big hands went straight to the ground, and he had the style of a general, but how did Lu Ya look at it and feel that this scene was like those instructors when he was learning a driver's license at a driving school.

And I hadn't seen him for a few days, and I almost forgot that the priest named Kroger I had brought back was actually pulled by the old man of iron to restore the strength of those slaves, and he would never have thought that he would become a member of the blacksmith shop after thinking that he had been highly respected in the tribe before.

"Ahem~ These individuals who have arranged for your old are still satisfied," Lu Ya asked closer.

"All of them are clumsy, they still have to be trained well, which is like me, I think I was in ・・・・・ with my master back then"

"Okay, don't talk about it, I know that you were deaf, clever, studious, shrewd and capable...

"This, in fact, I'm not that good anymore, it's just that back then, forget it, there doesn't seem to be much iron ore, you can go get some more" The old man was a little embarrassed by Lu Ya's praise.

"This, iron ore, I'll think of a way, when the time comes, you can first return all the inferior iron tools in the clan to the furnace, you can't stop this research, is there anything else" Lu Ya also had a headache when he heard the iron ore.

"And~, that doesn't seem to be a big deal, oh, by the way, this wood is always useless, if only a few more chopping wood would be enough. "The old man couldn't think of any other needs for a while.

"Wood, hey~ yes, in fact, if you make steel from wood, it is not only time-consuming, but also waste, and you can't make good steel," Lu Ya was also a little depressed.

"If you don't use wood, what else can you use, it's hard to use a magician" The old man felt that Lu Ya was talking nonsense, and gave him a big roll of his eyes.

"You don't have to despise me, I haven't asked you yet, do you know anything like coal, or what do you think humans use to make steel?"

This question Lu Ya has always wanted to ask, after living here for so long, Lu Ya felt that there should be coal in this world, but he had never seen it, and now the iron old man reminded Lu Ya of this after talking about the lack of wood.

"This~ They didn't let me see how to make steel, those real steelmaking are hidden in places we can't enter," the old man of iron was a little embarrassed.

"Then you are old, what have you learned?" Lu Ya couldn't help but be even more speechless after hearing the old man's words.

"Woo~ It's just to open the weapon, touch the oil, move things or something, occasionally when the human craftsman chats, I hear some bits and pieces, don't you learn to make iron, besides, other tribes are similar to iron-making..."

"Oh my God~~" Lu Ya was afraid of his forehead, and deeply doubted whether his decision to hand over this stall to him was correct.

After sorting out his thoughts, Lu Ya said slowly. "Uncle, coal can be understood as a kind of black stone that can be burned, the temperature and durability released after it is ignited are incomparable to wood, and it is also more conducive to smelting steel, if this carbon is processed into coke, then the time spent in making steel will be several times faster than wood, and the quality of molten iron is indeed several times better than that of us now."

The old man had never heard of carbon, and when he heard that this kind of carbon was so powerful, he couldn't help but grow his mouth in surprise.

"And this kind of thing, oh my God, it must be very precious."

"If I remember it, there should be a lot of this carbon, most of them are buried in the ground like all kinds of ores, but some of them should not be too deep, and some of them should be in the open air, well~ they are like~ like, hey, just like this, but the weight and feel like stone" Ruya found a charcoal block on the ground that had not been burned and had been charred on the ground.

"You mean it looks like this?" The Iron Old Man suddenly widened his glasses with a ghost-like expression.

"Well, that's right, except they should be bigger chunks or clusters together," Ruya continued.

"You come with me"

The old man suddenly grabbed Lu Ya and ran outside the tribe, and after leaving the tribe, he walked to the west for only a few minutes and came to a small dirt bag, which was very close to the tribe, and further on it was a mountain that was not too high, and the trees on the mountain were sparse and there was not much life.

The old man let go of Lu Ya and walked to the dirt bag, squatted down and gouged with his hands for a while, and a black stone leaked out, and with the hammer he carried with him, he knocked down a palm-sized stone and held it in his hand.

"Let's see, if it's this," the old man said excitedly, handing the black stone in his hand to Luya.