Lin Sen simply borrowed the blacksmith of the Cheng family, and under his guidance, the blacksmith quickly made what he wanted.

Although there are now new farmers with good blacksmith skills in the Lin family's Zhuangzi, it is still very difficult to get some iron materials over there, and it must be more convenient to make these iron objects on the Cheng family's side.

Although Lin Sen was favored by Li Shimin, the nobles of Chang'an City were obvious to all, but his rank was there after all.

If you really use iron materials, I'm afraid it's not a decimal, with his current weight, he runs to get more, and people estimate that they won't sell him this face, and they will have to carry out Cheng to bite them in the end. Rather than that, it's better to let them get it in the first place.

And Lin Sen felt that this thing could only be popularized among the nobles at the beginning, and most of it was due to this, this kind of iron-consuming thing could not be used by ordinary people, and it might not even be qualified to use it.

"Well, this thing is a charcoal-burning stove, of course, you can burn wood, but it's not as resistant to burning as coal, and the heat is higher, and it warms up faster.

With these chimneys, there is no need to worry about the soot making the house black, and the possibility of charcoal poisoning is reduced. Lin Sen pointed to the round iron stove and said to Cheng Yanjin.

This thing is naturally according to the style of the charcoal stove of later generations, with air inlets below, and a small drawer-type iron plate, which can support the falling carbon ash, and the design is relatively more scientific and reasonable than the furnace at this time in the Tang Dynasty.

"It's better to ignite and burn longer." As he spoke, Lin Sen simply began to demonstrate the process of making a fire, making straw and lighting it with tinder, then adding it from a small wood, and then putting coal in it when the fire was strong enough.

This process did not take much time, and after a while, several people began to roast around the road.

In the countryside of his hometown in later generations, this kind of stove has always been very popular, Lin Sen has to help burn it when he goes back to see his elders, even when he is an adult, this is one of the two major pleasures that he must play when he returns to his hometown, and the other is to use a pressurized water well to press water, so the operation is also very familiar.

"Let's get another iron kettle, there's hot water to drink at any time." Lin Sen said with a smile.

"It's also very pleasant to talk around the fireplace, of course, you can also put an iron pot or copper pot, you can eat hot pot directly here, and it is another refreshing enjoyment."

"There's also a kind of stove that burns what I call briquettes, and it's not pure charcoal, but a certain amount of clay is added to it, and it's pressed and molded.

The biggest advantage of this thing is to improve the utilization rate of charcoal, because those carbon slag and toner powder that are not easy to burn can be directly pressed into briquettes and will not be wasted. ”

As Lin Sen spoke, he took out a briquette that had been lit from the stove here and put it in the briquette stove.

"Well, these two stoves are okay, right?" Lin Sen proudly followed Cheng Biting Gold to show his work.

"The stove is very good, but I think the business of coal is more promising, and when these things are sold to thousands of households, everyone's demand for coal will definitely increase dramatically."

If charcoal and toner can be used, then the original small profit will become a small profit, let's make a small profit, even if you count the freight, this thing has to make money. Cheng Yanjin stared at these warm stoves and said thoughtfully.

"Uh, yes, the charcoal will definitely become more and more popular in the future, or the father-in-law thinks long-term and has a unique vision." Lin Sen admired convincingly.

It's not that he forgot to sell coal, of course he knew that selling coal was a big business, and the profits contained in it were even more terrifying, mainly because the thinking of later generations restrained him.

After all, the coal bosses of Jin Province in later generations left too deep an impression, and there were too many rumors about various black coal kilns in the early years, so he subconsciously felt that this kind of thing that was close to trading without capital was not something he could play.

The interests involved are intricate, and it takes countless lives to grasp the profits of this piece, so I unconsciously ignore this huge financial road.

But he forgot that the one sitting in front of him, as well as the group of Ziwuxun he could call, were themselves behemoths that could be covered, and it was not too difficult to reach into such a dazzling business, especially when many people did not realize the huge benefits contained in it.

"So don't rush to get these two furnaces on the market first, and wait until I call the old brothers to take down the Weibei coalfield." Cheng Yanjin admonished.

"I understand." Lin Sen nodded knowingly.

"By the way, is it true that you said that cutting too much wood can cause all kinds of disasters?" Cheng Yanjin followed up and asked.

"Naturally, it's true, well, maybe look at the several disasters in previous years, especially the diversion of the Yellow River, and then see if the water in the lower reaches of the Yellow River is more turbid than before, you can see that a lot of land along the river must have been taken away." Lin Sen said with some uncertainty.

The main reason is that the greening rate at this time is not too high compared to later generations, even if there is an ecological imbalance in a few areas, or soil erosion, this performance will not be too obvious, otherwise he would have directly regarded this matter as a big discovery, and the idea was reported to Li Shimin.

"Well, as long as you can get people to chop less firewood." Cheng Yanjin seems to have the intention of using this as an excuse to promote something.

"Oh, I almost forgot, as is customary, this stove and the future charcoal business are all yours.

People who are about to start a family have to have some inheritance that can be passed on, but they can't wronged my daughter. Cheng Yanjin patted Lin Sen's shoulder fiercely and said.

Although he has always shown that he is not very interested in seeing Lin Sen and his daughter, in fact, licking calves is still indispensable.

"Well, I definitely can't treat Huaiyu badly. But I have no problem with the stove as is customary, and I dare not take this part of the carboniferous mine.

This thing requires too much manpower and material resources, and it has to rely on your face, and I can't help much, it's a shame to take this job. Lin Sen didn't take it all down.

As he said, the name of this carboniferous mine is not right, he is a principled person, of course he can try his best to fight for his own, this is not his own benefit, and he does not mean to accept it plainly, although he knows that Cheng Yanjin is completely kind.

And this is Cheng Yanjin now does not see how big the profit of the carboniferous mine is, this is indeed a foundation that can be passed on, I am afraid that when the time comes, it will really be mined on a large scale, and their perception of this element in their hands will change.

Therefore, it is somewhat unnecessary to affect the originally strong relationship, and Lin Sen also believes that he will be able to find more and better industries in the future.

In addition, there is something that is difficult to explain, this coal mine is bound to involve a lot of lives, and for this kind of money, Lin Sen does not really want to be contaminated.

"Without these stoves you provide, the charcoal will never be on the table, and the sales will never go up, so it is only natural for you to take a copy.

If you really don't want to go, just throw some money in. That's it. Cheng Yanjin waved his hand to stop Lin Sen's words.

"Okay." Lin Sen replied with some gratitude.

In any case, Cheng Yanjin really didn't treat himself as an outsider, he really took care of half of his son.

"I almost forgot, and the most important thing, I received the news that there will be a big war in the next year, do you want to try?" Cheng Yanjin's rare emotions when he said this were a little complicated, with both expectation and worry.