Lou Xiaowan was like a frightened bird, and he stood up with a flick, his blushing face buried deep in his chest.

Li Huai tidied up his clothes, took a deep breath, calmed the restlessness in his body, and said, "Come in!" ”

"See the prince!"

Li Xin was covered in the dust, his face was blown out of two dry red blood spots, and his lips exploded into countless bloody mouths.

Li Huaiben wanted to get up and help him, got up halfway, looked down, sat down slowly, and raised his hand calmly, "Get up." ”

"Thank you, Lord Wang!"

Li Xin stood up, glanced at Lou Xiaowan a little more, and was a little surprised, so he immediately turned his gaze back.

"How?" Li Huai asked.

Li Xin took off the burden on his back and put it in front of Li Huai's table, "Lord Wang, where you let the ministers go, the ministers have gone, but the ministers don't know if this is what the prince wants." ”

The baggage was opened, and it was filled with black stones, and Li Xin also inserted labels on the black stones, indicating the source of the address of each stone.

Li Huai picked up a piece at random, looked at it carefully, and suddenly felt better, "It's this thing, you didn't find the wrong one." ”

Li Xin was a little curious, "Lord Wang, does this black stone have any purpose?" ”

In fact, they are no strangers to this kind of black stone, especially Taiyuan County, which is adjacent to Liangzhou, which is everywhere.

Although Liangzhou is not as much as Taiyuan County, there are also a lot of underground reserves, enough to dig for decades.

"It's called ...... Coal! ”

Li Huai said solemnly that it is a very important energy source.

When he first arrived in Jiuyuan, he read the local geographical chronicles, and the geographical chronicles said that there are strange stones in Liangzhou, the quality is like ink, hidden under the soil in the mountains and wilderness, there is a peculiar smell, highly poisonous, fragile, can not build a house, it is really useless, this stone is the most in Taiyuan County.

Li Huai thought at that time that this might be coal, so according to the records of the geographical chronicles, he marked out the map and asked Li Xin to find it.

Sure enough!

This is coal, but the people of the world still don't know how to use it, and because it is poisonous, ordinary people dare not touch it easily.

If you can grasp this opportunity and get rich, wouldn't it be simple!

However.

He now has ten million taels of silver in his warehouse, but he can't exchange it for a grain of grain. There are no 100 in Shangjun, and it is in vain to ask if you ask. The ice and snow have not melted, and the Chang'an Qinglong Chamber of Commerce has no way to transport the grain over.

If you want to get rich, you have to fill your stomach first!

"Tian Qing, Tian Qing, you are really a great crime, delaying the development of this king for at least one year." Li Huai sighed helplessly.

Li Xin was full of question marks, he had just come back, and he didn't know what had happened in Jiuyuan.

"Xiao Wan, you send someone to call Lu Youqi and Yan Gaoyang, I have something to discuss with them." Li Huai commanded.

Glancing up at Li Xin.

"You go wash first, I'll ask the kitchen to prepare some food for you, and come back when you're done."

"Thank you, Lord Wang!"

Li Xin traveled all the way, and as soon as he came back, he met Li Huai, and indeed he hadn't eaten yet, and he was hungry.

Not long.

Lu Youqi, Yan Gaoyang and the others all came to Li Huai's courtyard, and they all stood respectfully, watching Li Huai squatting on the ground, playing with a pile of black sludge.

No one knows what this is doing.

No one dared to ask.

"Miss Lou, I heard that you became a princess and a female official, which is really gratifying." Li Xin took a bath, changed his clothes, and after he was full, he was the first to talk to the small bowl upstairs.

Lou Xiaowan looked a little absent-minded, and just said, "Thank you!" ”

"Why don't you wear an official uniform?" Li Xin asked curiously.

Lou Xiaowan's face immediately turned red, and he lowered his head and said, "This is the official uniform I am wearing, Taoist." ”

"Oh!"

Li Xin nodded, and said, "I still think the official uniform is good, Wen Chi Wu Xuan, I should be regarded as a military minister, I don't know if I have a chance to wear a Xuan color official uniform." ”

After speaking.

He peeked at Lou Xiaowan again, his eyes were full of envy, recalling that he had followed the prince to fight in the past, and he had also worn a military uniform.

Afterward.

It's always been cloth.

Lou Xiaowan has put on official uniforms, when will it be his turn, Li Xinxin silently thought.

"Do you think that the prince may be different from what we think?" Lou Xiaowan said silently.

"What's different?" Li Xin asked rhetorically.

"It's ......"

Lou Xiaowan didn't know what to say, "That is, maybe the prince is not delicious, no, the prince is also delicious, but what is really good about him is...... Forget it, as a courtier, you shouldn't criticize the prince. ”

Li Xin was confused, and at the same time he also discovered, "I don't understand what Miss Lou said, but ...... Miss Lou, you look at the prince's eyes, it seems to be different. ”

"Huh?"

Lou Xiaowan turned his head and asked in a weak heart, "Which ...... What a difference. ”

"You didn't dare to look at the prince in the past, but just now, you looked at the prince with both eyes, including when you talked to me."

Li Xin, a straight man, said it directly, in fact, what he wanted to express was that Lou Xiaowan didn't look at people when he spoke.

It's rude!

"Is there one?"

Lou Xiaowan touched his forehead, looking even more empty.

Syllable!

Then.

Li Huai pressed his palms and used his innate divine power to squeeze the sludge into a square, and then poked some holes with his fingers.

Put it directly in the brazier.

As the coals dry the coals, the bottom turns red.

Li Huai took out the coal again and put it on a shelf, and the bottom of the coal was still burning.

It was a success the first time!

Li Huai washed his hands, beckoned everyone over, and surrounded the burning coal.

"What do you see?"

"There's fire." Yan Gaoyang said first.

"Tasteful." Lu Youqi said.

"It's very warm, it can replace charcoal, but I don't know if I can boil water for cooking." Lou Xiaowan said.

Li Xin tilted his head and thought, "This thing can also be burned?" ”

I can burn it!

That's the key!

In ancient times, the most important energy source was flame, which was needed to cook rice, boil water, and heat for heating, and only fire.

There is also a simple way to make fire, that is, to burn wood and hay.

This is actually very inconvenient for people who live in the city, and it is not easy for them to collect firewood.

Therefore, the profession of firewood collector was born, that is, coolies went outside the city to collect firewood, and then picked it up in the city and sold it to those in need.

"If this king takes it out and sells it, and it is not more expensive than firewood, will anyone ask for it?" Li Huai looked at everyone.

Brush!

All four nodded at the same time.

"Definitely!"

Others don't know, they want it anyway.

"Follow me."

Li Huai led them into the study and instructed the small bowl in the building: "Go and bring the fourteenth volume of B14." ”

"Yes."

Lou Xiaowan nodded.

Li Huai is a very particular person, and the words he draws and writes must be packed in paper bags.

Then it is divided into four categories: A, B, C, D, and marked with numbers, and stored in partitions.

Lou Xiaowan is easy to find, and I reached out and got the fourteenth volume, and the front of the paper bag reads: Coal Worker Daquan!

Two stars were also drawn.

The prince said that this represents the level of confidentiality, and the more stars, the higher the confidentiality.

Lou Xiaowan has always wondered that such a confidential thing is placed on the bookshelf so casually.

Can it still be considered confidential?

Li Huai opened the fourteenth volume, which was thick with a stack of paper, drawing various patterns, and annotations.

are distributed to them.

"Honeycomb coal?" The one in Lu Youji's hand is exactly the way to make honeycomb coal.

"That's what you just saw." Li Huai explained.

Everyone couldn't help but nod.

It's really vivid, with rows of small holes, like honeycombs.

These holes are also explained on paper in order to allow better air circulation so that the coal can be fully burned.

"Shearling."

Li Xin took a look at it and put it down, he knew about these half a month ago, otherwise he wouldn't have been able to bring the coal back.

They saw these two articles, which is the whole process of turning coal mines into combustible honeycomb coal, and how to use honeycomb coal, which is the key.

"Coal ...... Furnace! Yan Gaoyang looked at the stove drawn on the paper and the annotation of the coal stove, and the more he looked at it, the more excited he became.

"This coal stove is so magical, it can even adjust the size of the fire, the honeycomb coal is arranged layer by layer inside, and the lower one is ignited above, and there is no need to repeat the ignition, it is simply born for honeycomb coal."

Li Huai wanted to correct it, "It's not simple, this is tailor-made for honeycomb coal, you look down." ”

"Tongs, kettles, fireboxes, ......"

Anything they could think of, and anything they couldn't imagine, it was all here, and it was very simple.

Even if you haven't seen these things, you can use them as long as you hold them in your hand.

Their mood began to surge.

This can not only bring huge economic benefits, but also very convenient, people no longer have to worry about the lack of firewood to burn.

Coolies don't have to go to the wilderness and snow to collect firewood with their bare hands in the winter.

"Lord Wang, he is really a god!"

The only thing they don't understand is that they don't know how Li Huai came up with these unbelievable things.

Maybe the prince really has divine help.

Li Huai couldn't bear to splash them with cold water when he saw them so excited, but he still had to tell the truth.

"These things are ours, but we don't necessarily hold them. Because it's so simple, as long as we make it, within three months, someone will copy it. ”

Moreover!

"We can't expect the people of Liangzhou to go hungry to mine coal for this king!"

Speaking of the last word.

Lu Youqi lowered his head, his face full of self-blame, eager to find a crack in the ground to get into.