Xiao Yu and Li Fei only mentioned the issue of official procurement - after all, with his position as the head of the household department, it is impossible to talk about things that can be done by a small official.

Being able to mention it to Li Fei already shows that he is very close to the people.

However, Xiao Yu obviously attached great importance to the issue of carbon gas, and asked Li Fei again.

"Actually, it's mainly due to the inadequacy of the stone burning."

This kind of question is really pediatrics for Li Fei, who has a university education, and he is willing to popularize such scientific knowledge, so he said while leading Xiao Yu to Yongning Fang:

"Whether it's charcoal or charcoal, it may not be burned enough, but if it can be burned sufficiently, there will be no problem. But if the burn is not sufficient, then the things released are poisonous, and it is easy to poison people or even poison them......"

"Sure enough, this is the truth...... Xiao Yu sighed and said: "Actually, everyone vaguely knows that there is a problem with charcoal, but no one can say it clearly, so they don't care very much...... Alas! ”

Xiao Yu didn't say much, but Li Fei could roughly guess.

It is estimated that Xiao Yu's old dragon or something else was injured by charcoal, and I don't know if he survived.

"You're very good!" Xiao Yu was a big man after all, so he quickly changed the topic and continued to ask:

"I just don't know how much this furnace and honeycomb coal cost, and what is the selling price?"

Li Fei didn't answer this question, but asked Xiao Yu instead:

"Do you know how much charcoal is a pound now?"

After all, Xiao Yu is a household secretary, and he is still very concerned about people's livelihood, and said:

"As far as the old man knows, ordinary charcoal is a pound of more than ten to dozens of yuan, and the best silver frost charcoal can be sold for seventy or eighty yuan or even hundreds of yuan, and it is more expensive, so there is no popularity, don't mention it!"

Li Fei smiled, he pointed to Yongning Fang, and said:

"I have organized people in Yongningfang and three villages outside the city to make honeycomb coal, one honeycomb coal weighs two catties, and the selling price is three Wen!"

"What?" When Xiao Yu heard this, she almost jumped up!

This has reduced the price by nearly ten times!

Does this still make people live?

Xiao Yu knew that he had lost his temper, he calmed down his emotions, grabbed Li Fei's hand, and said:

"Is that true? Can the price of coal really be reduced to two catties and three cents? ”

Li Fei smiled: "Since I said it, it naturally makes sense...... Of course, compared to charcoal, honeycomb coal must be burned in a furnace, unlike charcoal, which can be made with a charcoal basin.

However, a stove can be used for several years or even more than ten years, and on average, the money saved by honeycomb coal in one year is enough to buy several stoves! ”

This is certainly true!

The furnace is no matter how much iron it costs, and it is not the kind of large boiler in later generations, just a dozen centimeters in diameter, even if you add a chimney, how much iron can it cost? The selling price will not exceed 100 Wen.

But with honeycomb coal, the price of charcoal for ten days is definitely enough to buy two stoves even if the efficiency is halved, five days a day, and the money saved in one winter!

"Let's go, the old man wants to take a look!" Xiao Yu really couldn't stand it this time.

Just said that I would introduce official procurement to Li Fei, and part of it was to appreciate Li Fei and send personal favors.

But now, it was completely frightened by the "money scene" described by Li Fei!

If what Li Fei said is true and can be done, then Chang'an City's charcoal industry will definitely be disrupted!

Li Fei did not refuse, and directly took Xiao Yu to the new courtyard of his house.

And the blacksmith went back to his blacksmith's shop—he was going to make a cigarette pipe.

Entering the yard, Xiao Yu found that there were many people making honeycomb coal in the yard in the open space, and when she saw Li Fei coming in, she straightened up one by one and said hello:

"Phineas are back!"

"Fei Ge'er has worked hard!"

"Brother Fei'er, come and see, how about I did this?"

"Don't bother Fei Ge'er, didn't you see that Fei Ge'er was in trouble? Just do it yourself, delay Feige'er's big event, and I can't spare you......"

Xiao Yu could see that these people respected Li Fei from the bottom of their hearts.

There is another layer of understanding about the person in front of you!

Li Fei pointed to the piles of coal dust and red clay in the yard and said:

"This is the raw material, to put it bluntly, it is basically worthless, and the cost is extremely low!"

He pointed to the men again and said:

"Some of these people are the neighbors of Yongningfang, and some are from the villages outside the city, I am a cooperative, everyone does it together, and sells it in a unified manner, so that the pricing is not easy to change, and everyone will not think about how to solicit customers. It is good for everyone to be able to put your mind into making honeycomb coal! ”

Xiao Yu stroked his beard and nodded approvingly!

Well arranged, this kid is good!

However, when he saw those people mixing red clay into the coal, he still frowned.

But Li Fei didn't avoid him when he did this, and he couldn't say anything.

Li Fei took Xiao Yu into the room, pointed to the stove in the middle of the main hall and said:

"You see, here is a good honeycomb coal stove, not big, easy to place, as long as the lid is added, the chimney is made, then the problem of carbon gas is easy to solve."

As he spoke, Li Fei lifted the lid, opened the door on the ground floor, and then poked it with tongs to let the fire burn, covered the lid, picked up the iron kettle from the side and put it on the stove, and after a while, the teapot was hot.

"Isn't it much more convenient to use this thing to not only boil water, but also to bake things?"

Xiao Yu stepped forward, lifted the teapot and looked at it, stretched out his hand to feel the temperature of the stove, and said:

"Well, it's really warmer, not as dry as the fire in the charcoal basin, it should be more durable, and it's enough to warm people, but the house is big, I'm afraid one is not enough......"

"The house is big, you just need to make the stove bigger." Li Fei almost rolled his eyes and said, "If the house is big, it means that the main family is not poor, then you only need to build a big stove." You don't need to burn honeycomb coal, you only need to burn lump coal, and the temperature will definitely rise immediately......"

"Can you also burn lump coal?" Xiao Yu didn't expect that there was a coal stove as Li Fei said, and he was immediately interested.

"This honeycomb coal stove was originally used by poor people, or when it was cold in spring and autumn, but it was not freezing." In the face of potential customers, Li Fei explained in detail:

"Therefore, the materials used are relatively cheap, and the selling price is relatively low. If it is a well-off family, it is more convenient to use lump coal, but it is a little more troublesome to clean up! ”

As he spoke, Li Fei described the kind of stove that was common in later generations.

Xiao Yu immediately understood.

After all, the principle is the same.

Seeing that Li Fei explained so frankly, Xiao Yu finally asked that question:

"If it's for the sake of the poor, why should it be mixed with red clay, isn't this no different from profiteers?"

When Li Fei heard it, he was happy!