Datang: The prince of salted fish was overheard by Li Er

Ordinary coal will produce a lot of smoke, and because there are too many impurities and high sulfur content, it will be like poisonous smoke when it is burned.

Such coal is of course impossible to use indoors.

However, the coal washing and coal preparation workshops obtained by system sign-in can just solve this problem.

The clean coal produced in this way not only has extremely low sulfur content, but also is colorless and smokeless when burned, and it burns for a long time, making it an excellent fuel for keeping out the cold.

Although according to the current technological means, even the system cannot reduce the sulfur content in coal to the level of modern technology, but the buildings of this era are not sealed environments.

Therefore, the poisonous gas produced by the burning of coal hardly causes much harm to the human body.

The more common charcoal in this era also has such problems, and the carbon monoxide produced by incomplete combustion can also kill people.

Moreover, because charcoal requires a lot of manpower and material resources in the manufacturing process, the price has always been high.

Li You still remembers the song "The Charcoal Seller" by Bai Juyi that he had learned before, which described an old charcoal seller who cut firewood and burned charcoal in Nanshan all year round.

The difficulty of burning charcoal is described in the poem.

Although in the end the envoys in the palace almost forcibly plundered and generally paid more than a thousand catties of charcoal with half a bolt of yarn and one zhang silk, the tight demand of charcoal can also be seen.

At the same time, it also shows that in Datang, it is not ordinary people who can afford charcoal in winter.

Compared with the expensive charcoal, the clean coal that Li You will produce is almost free.

In particular, the coal mine that Mu Bin found is a shallow coal mine, and there is no need to drill coal wells, just open-pit mining.

Li You walked around and found that the ore vein in this place was not small, and even extended beyond the scope of his fiefdom.

"Commander Mou, buy the area where this coal mine is located."

"In addition, I sent people to Datong, Yulin and other places to survey the coal mines, and found that they were of good quality and quickly bought them."

This time, Li You is merciless in his actions. Now Dou Dan's cement workshop has started construction, and Duan Lun and the Ministry of Industry's red brick kiln have also started construction.

Over time, the demand for coal will inevitably increase significantly.

In order not to be choked by the aristocratic family in the future, Li You urgently needs to control these resources in his own hands.

The purpose of his acquisition of Meishan was not to dominate, but to protect himself.

After finishing speaking, Li You thought of another matter, so he asked Mou Bin to survey the distribution of iron mines in various places.

After the coal industry matures, the iron and steel industry is bound to prosper.

With the system's urgency, Li You had a premonition that the system would soon teach him the steelmaking workshop and steelmaking techniques.

Since he had to do things sooner or later, he naturally had to plan ahead now.

After the investigation was over, Li You asked Wang Xuance and others to leave first, and then he summoned the system placement workshop.

Although the three of Wang Xuance are also Li You's confidantes, after all, they were not sent by the system to sign in, and it is estimated that they will not be able to accept a workshop out of thin air for a while.

In fact, Li You didn't have to be so careful.

On the second day after he put down the workshop and left, the three of Wang Xuance came here secretly.

When they saw a workshop rising from the ground, all three of them exclaimed the magic of immortality.

In fact, the three of them were very curious about the workshop in Shence Mansion before, not knowing where such brilliant workshops and craftsmen came from.

Now it seems that those workshops also come from the hands of immortals.

As a result, they admired Li You even more, and felt that Li You was a disciple of all immortals. Otherwise, at such a young age, how could he have such superhuman wisdom and various methods that made them unimaginable.

After Li You placed the workshop, he stayed in Lanzhou for three days.

It was rare for him to go out once, so he naturally wanted to enjoy it.

In the end, if he hadn't received the letter from Concubine Yin, Li You probably would have played for another ten days and a half before going back.

Before leaving, Li You handed over a suitcase to Wang Xuance.

"Xuance, what's in here should be enough for you to use for a while."

"Remember, this matter is too dangerous, so be careful. If it doesn't work, you can just hand over the money to them!"

Li You said in a deep voice.

Wang Xuance took the suitcase, nodded emphatically and said, "Thank you for your concern, my lord, I, Wang Xuance, will definitely live up to my trust."

"Even if it is death, the prince's property must be preserved."

Li You quickly interrupted him and said, "No, I'd rather not have those properties than see you in trouble."

Then Li You turned his head to look at Su Dingfang and Pei Xingjian and said, "It's the same with you, you are all future famous generals of my Tang Dynasty, I will never allow you to sacrifice your life for this little gold and silver."

"Your life is to do great things."

"Remember, life-saving comes first in a crisis."

Li You's words came from the bottom of his heart.

He understood that it was all because of him that these people would enter the Turkic grassland at this time and do such dangerous things.

If something happened to them, Li You would probably live in guilt forever.

Li You's sincerity also moved Wang Xuance and the three of them. Isn't it what they wanted in their hearts for a master who loves his subordinates so much.

It can be said that what Li You said to persuade them to cherish life, on the contrary, gave the three people the urge to die for their confidants.

If Li You knew this was the result, he probably wouldn't have said that today.

After bidding farewell to the caravan, Li You led his people towards Chang'an.

In the end, because Li You was really not in a hurry, he walked too slowly and missed Sutou.

Just when everyone was preparing to spend the night in the suburbs, they found a small village halfway up the mountain.

"Although the village is a bit smaller, it's better than us sleeping in the wild."

After Li You gave some instructions, he asked Mou Bin to take people to the village to prepare first.

However, after waiting for a while, he saw Mu Bin come back in disgrace.

"Commander Mou, what's the situation in that village? Why, others won't let us in?"

Mu Bin nodded and said, "Yes, we were just about to enter the village with a few brothers, but we were stopped before we went up the mountain."

"Oh, there is such a thing? Why are there still villages in the land of Tang Dynasty that people are not allowed to enter?"

"Could it be that there are Turkic spies in this village, so they dare not let outsiders in?"

"And Commander Mou, he won't be stopped by a few villagers, right?"

Li You asked suspiciously.

Unexpectedly, this time Mou Bin nodded again and said: "My lord, this village is really not allowed to go, I think we should go on the road overnight, even if we stay at the foot of this mountain for one night, it is not appropriate."

This time Li You was even more surprised, who exactly did Mou Bin meet up there that would make him not want to stay here for a moment.

Seeing Li You's suspicious eyes, Mou Bin said with lingering fear: "My lord, you really can't go to the village above, because the people there are sick!"