Li Lizhi found it unbelievable." Mother, this..." Isn't it too expensive?"
"No! " You know this effect too. It's completely different with or without thermal underwear. As long as the effect is the same, there's absolutely no problem.”Empress Zhangsun was very confident.
Li Lizhi nodded." I understand!”
"Go back and talk to the expert first. If there's no problem, it's settled.”
"Mother, the master has one more condition.”
Empress Zhangsun thought to herself that it was indeed not such a good thing. She asked,""What condition?"
"I don't want copper coins or silver, I only want gold!”
Empress Zhangsun heaved a sigh of relief. Although this was a little troublesome, it was still acceptable.
Empress Zhangsun asked," Even jewelry is not allowed?”
"No!" Li Lizhi quickly shook her head." Only gold!”
"Yes, there should be no problem.”"Mother has to go and see your father," said Empress Zhangsun."She might not be back until very late.”
His meaning was clear. He didn't need to come over at noon.
"Mother, how is your body? Why don't you let your son go!"
Empress Zhangsun shook her head." It's alright. It's alright now. It's time to go out for a walk!”
After Li Lizhi left, Empress Zhangsun also prepared to meet the others.
It was winter, so it was better to send these thermal underwear over as soon as possible.
The most important thing was to tell Li Shiming about this matter. Li Shiming had been paying attention to the situation of the expert behind Li Lizhi.
...
He racked his brains but failed. Looking at the map of Chang 'an, Xiao Ran felt that his abilities were limited.
Suddenly, a small black square symbol attracted Xiao Ran's attention.
Xiao Ran seemed to have an inspiration in an instant.
Didn't this small black square symbol represent a coal mine?
The coal mine was not the main point. The main point was that this icon was near Chang 'an Fortress.
Xiao Ran suddenly thought of a solution to the cold weather.
Xiao Ran quickly searched the Internet to see the quality and storage of coal mines near Chang 'an City.
What was marked now must have been mined recently, so the Great Tang must have still had coal back then.
In winter, the price of charcoal remained high. On the one hand, it was not easy to make charcoal. The technical level of the people was very limited. Most of the time, it depended on luck.
In this era, ordinary people needed to keep warm. The rich burned charcoal, while ordinary people could only burn firewood.
Although burning charcoal was time-consuming and laborious, because it burned more efficiently and did not produce too much smoke, it was very favored by the imperial palace and the great clans.
The winter of the 7th year of Zhenguan was colder than usual. The demand for charcoal increased, and the price soared!
This was a drawback of this era, and the imperial court often found it troublesome.
When these aristocratic families saw that there were benefits to be gained, they naturally would not miss the opportunity.
As for the lives of the commoners, they did not care!
The influence of these aristocratic families was too great.
Soon, Xiao Ran found detailed information about the coal mine near Chang 'an City.
Xiao Ran carefully compared the map of the Tang Zhenguan period with the current map and found that the coal mine was very close to Chang 'an City.
In a place called Yujiagou.
The storage of coal was very frightening. What surprised Xiao Ran even more was that this was actually high-grade coal!
Unlike ordinary coal, ordinary coal would produce a large amount of smoke. Moreover, due to the high impurities and sulfur content, it would be poisonous when burned.
In the later generations, the honeycomb briquettes and briquettes that were commonly used by people actually needed to be refined, commonly known as coal washing.
However, in this era, it was too difficult to wash coal. It was almost impossible.
There was no need to use coal at all. Yujiagou was an open-pit coal mine, so it was even easier to mine.
There was basically no mining cost, and it was almost the same as directly transporting it back.
This kind of good thing was actually kept in the 21st century!
The sulfur content of the coal was extremely low, so the coal washing process was much simpler.
Therefore, it was very feasible. Xiaoran was confident that he could handle the coal washing problem.
Most importantly, it burned colorless and smokeless, and it burned for a long time. It was an excellent fuel for keeping out the cold.
The buildings of this era were not sealed, so the gas from the coal was not a big problem and could be ignored!
This book comes from：m.funovel.com。