Yuan Shu seems to have Yuan Yao's idea a long time ago.

After hearing Yuan Yao say this, his face did not show joy, but shook his head.

then refuted Yuan Yao.

"Yao'er, you're thinking too simply."

"These homeless people only want a bite to eat, and there is also some grain in the treasury of my Dazhong Kingdom, if you only need soup porridge to save them, then my father is naturally willing."

"But these homeless people not only have no food, but also have no place to sleep, although this Huainan area is located in the south, but when winter comes, the cold is biting, most of these homeless people are thinly dressed, not to mention the wind and snow, even an autumn rain can freeze them to death."

"Can you solve their food problems, and can you also solve their accommodation problems?"

Being able to ask this question shows that Yuan Shu, the old man, is not stupid enough to go home, at least he still knows some things.

But if you think about it carefully, if Yuan Shu was really a fool, he wouldn't have laid down such a huge family business.

Yuan Yao heard Yuan Shu say this, the expression on his face did not change, but showed a trace of calmness.

On the way here, he had already thought that Yuan Shu might ask this, so he naturally had a way to deal with it.

"Father, you can rest assured of this, your son has already had a way to deal with it."

"Oh? Tell me about it? ”

As soon as Yuan Shu heard Yuan Yao say that he had a countermeasure, he immediately became interested, picked up the wine bottle on the desk, took a sip, and savored the sweetness of the rice wine.

"When Erchen attacked Cao's army in Runan this time, he accidentally found some black stones in the mountain stream, these stones can actually burn, and the flames produced are enduring, a few points better than firewood."

"If it can be mined in large quantities and used to heat these displaced people for the winter, there is no problem at all."

More than 100,000 or even more displaced people, let them warm up for the winter, just chopping wood and burning fires is definitely not enough, not to mention whether there is so much wood around for the displaced people to use.

Even if there were, all the wood was cut down, but it would not be as useful as coal.

What's more, coal mining has another role for Yuan Yao.

Huainan, as one of the five largest coal mines in China, has huge coal reserves, and if coal can be mined, whether it is used for heating or daily use, it can bring great convenience.

What's more, the heat generated by the combustion of coal is much higher than that of firewood, and coal is the foundation for forging weapons and developing other technologies in the future.

Yuan Yao just wanted to get the coal out first, so that he could make the next preparation.

Originally, Yuan Yao was still thinking about how to explain the burning stone to Yuan Shu, but when Yuan Shu heard what Yuan Yao said, instead of showing surprise, he already knew that such a thing existed.

"I'm talking about coal?"

"Father also knows?"

"I know a little bit about it, when my father was young, I heard that there were blacksmiths in Runan Mountain who used to go up the mountain to quarry stones for burning."

Yuan Yao was stunned, he thought that coal had not yet been discovered and used by the world in this era, but he didn't expect that in this era, not only had people begun to use coal, but also used it as fuel, and tried to smelt weapons.

"My father is wise, what my son said is this kind of coal, as long as it can be mined in large quantities, the coal will definitely solve the problem of the displaced people in winter."

"What's more, this thing can not only solve the problem of displaced people, but also make money!"

Yuan Shu was not interested in this so-called charcoal, this thing has actually been discovered a long time ago, and even some people have used it in the previous dynasty, but this thing will produce thick smoke when burned, plus there will be a choking smell, compared with other fuels, it has a great disadvantage.

The big families of this era, their way of heating in winter, is generally made of charcoal, which is made of carbonization by using firewood, not only has no smell, but also almost no smoke.

Ordinary people's families naturally can't afford to use charcoal, but ordinary people can go directly to the mountain to chop firewood for heating and cooking, which is more convenient and trouble-free than using charcoal.

Coal mining is not easy, and there are drawbacks, so naturally no one uses it.

That is, those craftsmen who strike iron, because the flame strength of firewood is not strong enough, only use charcoal for burning forging.

But now when I heard Yuan Yao say that these black and undesirable charcoals can actually make money, they immediately became interested.

"Tell me more, how can this thing make money?"

Yuan Shu may not be interested in relieving the victims, but he is very interested in making money.

After becoming the emperor, Yuan Shu knew that his family business did not seem to be as much as he imagined, and the expenses in the palace were a large amount of expenses every day.

Although his family had a big business, he couldn't withstand that kind of consumption, and in order to maintain his extravagant life, Yuan Shu even cut military spending.

It is precisely because of this that the combat effectiveness of the soldiers under Yuan Shu's command will become weaker and weaker, and they will be vulnerable.

Yuan Shu, who was already picking and searching, cherished every amount of money and would not reward it easily.

If it weren't for Yuan Yao's great achievements this time, Yuan Shu wouldn't even be willing to be rewarded.

Unexpectedly, now Yuan Yao actually said that the charcoal could make money, which naturally surprised Yuan Shu slightly.

Yuan Yao didn't immediately explain to Yuan Shu, but instead asked Yuan Shu rhetorically.

"Does Father know how much that charcoal is worth?"

Yuan Shu thought about it for a moment before answering.

"Does Yao'er think that because his father is the emperor, he doesn't know the price of money?"

"I've heard from the little yellow door in the palace that a stone of charcoal outside can be sold for about 3,000 yuan."

Yuan Yao nodded, although what Yuan Shu said was slightly different from what he knew, it was not bad.

On average, a pound of charcoal is about twenty or thirty yuan.

Some smokeless charcoal has a high value, which can be sold for forty or fifty yuan a catty, and the worse quality charcoal is naturally cheaper, and even a few pennies a catty.

But the family is rich, and they never treat themselves harshly, so they basically buy the best smokeless charcoal on the market.

Naturally, prices have also risen.

"Father, if there is a way for the sons and daughters to get rid of the smell of charcoal, and it can also make it burn without producing smoke, and the price is half cheaper than charcoal, does my father think this charcoal can replace charcoal?"

"What! Can you make it possible to burn charcoal without producing smoke, and at half the price of charcoal? ”

"Is that true?!"