In the Tai Chi Hall, Li Shimin and Fang Xuanling stared at Li Kuan using a fire stick to light the briquette stove.

After listening to Li Kuan's words just now, they already have a brief understanding of the situation of briquettes. Now they have to see whether the facts are the same as what Li Kuan said.

"Your Majesty, when you use the briquette stove for the first time, you need a little charcoal or other flammable things to help ignite the briquettes. After that, you only need to replace the briquettes one by one after they burn out."

Li Kuan also used briquettes when he was a child. Even when Li Kuan traveled through time, people in many rural areas were using this cheap thing.

"According to what you said, the briquettes are burning all the time, isn't it too wasteful?"

Li Shimin can be regarded as a frugal emperor, at least in his early years, Li Shimin was like this.

So after hearing what Li Kuan said, his first reaction was waste.

"Your Majesty, your Majesty, you have got the point right."

Li Kuan put his hands on the briquettes that were starting to turn red, and answered Li Shimin's questions in a leisurely manner, patting him on the butt lightly.

"If an ordinary stove keeps burning without turning off the flame, it will definitely waste a lot of materials, and even waste more than what is used. But has your Majesty noticed that there is one difference between my briquette stove and ordinary stoves?

"

"What's different? Apart from the slightly weird shape, I don't see much difference from the charcoal stove." Li Shimin walked around the briquette stove and looked at Li Kuan in confusion.

"There's not much difference, but have you seen this little iron piece?"

"Small piece of iron? Is this what you are talking about? What is its use?" Li Shimin saw that there was a round iron sheet on the bottom of one side of the entire stove.

"That's right, here's the beauty." Li Kuan showed a smile that met social expectations, "When I explained carbon poisoning just now, I mentioned the principle of combustion. If the burning object cannot fully contact with the air,

It will burn incompletely, or even not burn at all..."

Before Li Kuan could finish speaking, Fang Xuanling suddenly slapped his head, "I probably understand. Could it be that this small iron sheet is just empty briquettes in contact with the air? Open it when you need to use it, so that the briquettes can be fully burned; if you don't need to use it,

Cover it when necessary to prevent the briquettes from burning as much as possible, thus making the briquettes more resistant to burning."

When Fang Xuanling said this, Li Shimin quickly understood, "So, this briquette and briquette stove are really good things and are very suitable for every household. By the way, is this briquette expensive?

"

"Your Majesty, the cost of this briquette is very low. An ordinary craftsman can process two thousand briquettes a day. Counting the people who dig and crush the coal mines in front of us, one person can produce more than 500 briquettes on average, so Wei Chen thinks that a penny

Five briquettes is a relatively appropriate price."

Li Kuan likes money, but he is not the kind of person who would take advantage of others for money.

Chang'an City and even Guanzhong Road are in great need of heating materials during this period. If cheap briquettes are available, at least half of the problems can be solved.

"Five for one penny? Your Highness the King of Chu, how many briquettes does an ordinary family of five need in weather like this?"

Fang Xuanling looked at Li Kuan a little nervously, for fear of hearing a very high number.

If briquettes are to be used in thousands of households, they must be cheap and easy to use, otherwise they will be useless no matter how good they are.

Li Kuan: "In weather like this, if you stay at home all day, heating will consume more coal. You will need about ten briquettes. If you use it sparingly, seven or eight will do."

Li Shimin: "Is it just heating or does it include cooking two meals a day?"

Two meals a day, you read that right.

In the Tang Dynasty and even most feudal dynasties, ordinary people had two meals a day.

As the saying goes, work at sunrise and rest at sunset, there is no such thing as lunch for ordinary people.

At most, when farming is busy, the morning and evening meals are just a little thicker.

"Of course it does not contain it. In fact, when using this briquette stove, you can use it for both heating and heating. Put an iron pot on it and fill it with water. You can also boil water without delaying heating. Similarly,

It would also be very convenient if you cook something in stew."

From the looks of Li Shimin and Fang Xuanling, they seemed to intend to promote briquettes on a large scale. Naturally, Li Kuan wanted to seriously introduce the advantages of briquettes.

The various things that his palace has sold are still hoping that the mines outside the city will turn into mountains of gold and silver so that they can buy them back.

"If the weather is not cold, how many briquettes does an average family need per day?"

Fang Xuanling had already made some calculations in his mind. It seemed that there was a way to cope with this late spring cold. At this time, he began to pay attention to longer-term matters.

It is worthy of being seen through the ages.

"Mr. Fang, if ordinary people just cook, three or four briquettes a day will be enough. For those who are more economical, two or three briquettes may be enough."

Fang Xuanling calculated an account silently in her heart.

At two or three yuan a day, it only costs half a penny, and it costs more than a dozen pence a month.

For the mountain people, it is naturally not a small number. They are very good at cutting firewood and there is no need to use briquettes.

But for people in Chang'an City, whether they are buying firewood or charcoal, they need more than a dozen pennies a month. Nowadays, briquettes are convenient and cheap, so there is no reason why they should not be popular.

"Your Majesty, outsiders have many misunderstandings about His Highness the King of Chu. Even the humble ministers did not understand the wisdom of the King of Chu before. The coal mines outside the city had already been mined in the pre-Sui Dynasty, but it is not until now that His Highness the King of Chu has truly

It has played its role, which is truly turning waste into treasure and benefiting the country and the people."

Li Kuan solved something that Fang Xuanling had been worrying about recently, so he naturally didn't hesitate to give a few words of praise.

"Kuan'er finally did something serious. But Wuji made a mistake this time, and all the nobles in Chang'an City made a mistake."

There was no smile on Li Shimin's face, but he felt satisfied in his heart.

"The coal mine was sold for 300,000 guan. The Changsun family thought it was a good price. If someone wants to buy the coal mine again in a few days, Wei Chen estimates that His Highness the King of Chu may not be willing to sell it for 300,000 guan."

Fang Xuanling glanced at Li Kuan with a smile.

"Xuanling, please stop praising him, otherwise he may do something unreliable again. The top priority is to immediately increase the production of briquettes so that the people of Chang'an City can use briquettes in the shortest possible time!

"
Chapter completed!