Li Shimin was a hard-working emperor.

It is no exaggeration to say that he has everything on his plate.

Just when the young eunuch went to call Li Kuan to enter the palace, he listened to Fang Xuanling's report again.

"According to you, the court can't do anything now?"

Li Shimin frowned and refused to accept the facts Fang Xuanling said.

Fang Moududu, Fang Xuanling's strategic level has always been very high, but in the face of natural disasters, there is no good way.

"Your Majesty, the price of charcoal in the West Market has doubled. Even the coal that no one used before has become popular, but what followed was a series of carbon poisoning accidents. Yesterday, there was even a six-story house.

Mouth all..."

Coal cannot be used, this is already the consensus of everyone in Datang.

Although its price is only a fraction of that of charcoal, it is deadly stuff.

"The weather is so cold and the people have no way to keep warm. If it continues like this, something big will happen."

Li Shimin was an emperor who had come through war, and he had a very deep understanding of the power of the common people at the bottom.

Otherwise, we would not have said something like "water can carry a boat but also capsize it."

"At the moment, we can only consider asking some wealthy households to donate some charcoal and burn it in some charity halls, so that people who have no heating methods nearby can stay in the charity halls. However, this is ultimately a drop in the bucket. If there is a way to solve the heating problem of the common people,

, that can truly solve the problem.”

Li Shimin is actually very clear about what Fang Xuanling said, but it is useless to know clearly.

"Your Majesty, is it not easy to solve the heating problem? Wei Chen has a solution!"

Li Kuan's sudden voice frightened the little eunuch who brought him in.

At a small scale, this matter is interrupting His Majesty's memorial, but at a larger scale, it is suspected of eavesdropping on the secrets of the imperial court.

However, no one present obviously focused on the little eunuch.

"Li Kuan, don't be ridiculous. You can talk about this kind of thing casually."

Li Shimin was initially pleasantly surprised, but when he saw that the person coming in was Li Kuan, his face immediately dropped.

On the contrary, Fang Xuanling felt a little bit like a dead horse being treated as a living horse doctor, so she quickly said: "Your Majesty, His Royal Highness the King of Chu said that there is a solution, it won't be a big deal if you might as well listen."

Fang Xuanling originally had no hope, but after saying this, he suddenly thought of the recent news that the Prince of Chu's palace was buying minerals on a large scale, and his originally cold heart suddenly became eager.

Could it be that King Chu really had a solution?

Or is the so-called solution he said just to contribute his own coal mine?

If that's the case, it doesn't make sense.

"Humph, let's listen to it. If it really makes sense, I won't argue with you. Otherwise, you will be punished for all the crimes. It's better for you."

Although Li Shimin hoped in his heart that Li Kuan could find a solution to the heating problem, he had little confidence.

It is true that in all these years, Li Kuan has not done many things worthy of his trust.

To be more precise, Li Kuan has never done anything that makes him trustworthy.

"Your Majesty, Prime Minister, I have a general understanding of today's problem. It's just that the price of charcoal has increased and the supply is insufficient, and the people do not have enough heating materials..."

Li Kuan wanted to analyze it from beginning to end, but he was interrupted by Li Shimin as soon as he started, "Aren't you talking nonsense? Who didn't know this was like this? What I need is a solution!"

"Your Majesty, don't be anxious! It just so happened that Wei Chen brought something in, please take a look first before talking."

After Li Kuan finished speaking, he motioned to the young eunuch at the entrance of the palace to bring what he wanted.

Why Li Shimin was looking for him? Li Kuan could think of it with his toes.

So when I entered the palace, I thought about how to deal with it, but I didn't expect to encounter Fang Xuanling and Li Shimin discussing the cold disaster.

This time it’s even better, kill two birds with one stone!

"What is this black thing? It looks a bit like coal, but the coal sold outside is in pieces, which seems very different from this one."

Fang Xuanling was not a prime minister who was aloof from the world. He immediately recognized what the young eunuch had brought in.

"Fang Xiang, you are right, this is made of coal, but the coal used to make this thing has been crushed and made into a honeycomb shape using a special model, so I gave it a name, honeycomb briquettes."

"Coal briquettes? That's quite appropriate, but coal is poisonous. Can making it into honeycombs solve this problem?" Fang Xuanling looked at Li Kuan in confusion.

"Prime Minister, in order to solve the problem of carbon poisoning, we must first understand what carbon poisoning is and why it is easy to be poisoned when burning coal, but there are few records of poisoning when burning charcoal."

Li Kuan did not answer Fang Xuanling's question directly, but explained the problem at his own pace.

Carbon poisoning is nothing more than carbon monoxide poisoning. In future generations, anyone can tell why.

In fact, this is not a profound and complicated problem, but Datang lacks systematic physical and chemical theories, and no one can accurately explain the cause of carbon poisoning.

"Don't try to titillate people there. If you have anything to say, please tell me immediately."

Li Shimin felt that Li Kuan today was a little different from usual, less impetuous and more calm, and actually looked a bit like his younger self.

However, he has never been good at expressing his feelings to his sons. Although he was very happy in his heart, what he said was...

"Whether it is coal or charcoal, the substances burned are actually the same. But because charcoal is relatively loose and burns relatively fully, there will be no poisonous gas that causes carbon poisoning, or in other words, there will be very little of this poisonous gas, and it is not easy to treat

People cause harm.”

"But coal is different. Coal that has not been treated will not be fully burned when directly burned, and will release a large amount of poisonous gas. In order to keep warm in winter, doors and windows are often closed, so it is easy to cause carbon poisoning when burning coal.

."

After listening to Li Kuan's explanation, both Li Shimin and Fang Xuanling seemed to understand.

But at this time, none of them interrupted Li Kuan.

"I don't know if you have noticed, but if you stir the burning fire with a stick, the fire will become bigger."

Li Shimin frowned and thought for a moment, "This is indeed true. In the past, when marching in the field, the fire was about to go out, and the soldiers would often stir it up with wooden sticks, and the fire would become bigger again."

"Then has your Majesty ever thought about why this is happening?"

"why?"

"Because it burns more fully."

"Burn more fully?"
Chapter completed!