Li Yuanai looked at the letter seriously and bit his lower lip unconsciously. This butterfly effect made him really difficult to accept.

Looking at Li Shimin's decision, Li Yuanai knew in her heart that this was the only opportunity.

If Goguryeo did not conquer this time and the battle to stop in Mount Shan would be a huge loss.

No matter what, you can't repeat the same mistakes.

only……

Li Yuanai felt helpless and felt that he was a person in charge of logistics and was helpless in the war on the front line.

Then he scratched his head again, as if he couldn't do anything on the front line?

Just by reading this "Romance of the Three Kingdoms", can you play big shots like Li Shimin, Changsun Wuji, and Li Ji in Military Strategy?

If they can't handle it, they can only make up the numbers by themselves.

Looking at the letter "The local surrender estimates that winter may begin in September. Things to keep warm should be prepared as soon as possible to ensure the overall situation." Li Yuanai's eyes flashed with a hint of heat. All he could do seemed to be able to do was to get the logistics in order to get the logistics in this battle. The logistics of this battle was the key.

Cotton coat, quilt!

Li Yuanai said: "Actually, cotton coats and quilts are easy to raise, which is a fixed number. I would not have been able to make up more than 100,000 sets of cotton coats and quilts in Tang Dynasty. The real key to keeping cold is charcoal fire. Only with charcoal and fire can we keep warm."

"Carbon fire?" Li Zhi said in surprise.

"Yes!" Li Yuanai nodded solemnly and said, "The most difficult thing in the cold winter is the night, especially the cold winter in the Greater Northeast, which is even more understandable to us non-locals."

In later generations, Li Yuanai always heard that the cold in the south was magical damage, and the cold in the north was physical damage. Wolves from the north froze into husky in the south.

Those who say this have never truly experienced the coldness of the north or northeast.

Especially in the Great Northeast, Li Yuanai had an experience.

It’s not a lie to be in Jilin in winter, it’s cold and sprinkle water into ice.

Fortunately, the technology is developed and every household has heating, so he hurried in the heating and didn't dare to go out of the door.

He didn't know how the climate in the ancient Northeast was compared with later generations, but even as later experts said, the global climate in the Tang Dynasty was in a warm period, and the temperature in the Northeast was not easily resisted.

It is impossible to survive the cold winter in the Northeast with just cotton coats and quilts.

There must be charcoal fire.

Li Yuanai said firmly: "Without charcoal fire, even if the soldiers who conquered Goguryeo were selected by the northern prefectures, they could not resist the coldness of the northeast."

Li Zhi looked at Li Yuanai deeply and said, "That's true, I can only persuade my father to withdraw from the army."

"Why?" Li Yuanai's expression changed slightly.

Li Zhi said: "Supplying charcoal fire is not in line with reality. Although ordinary charcoal fire is easy to obtain, it can burn too quickly, and a charcoal cannot last for an hour. The logistics of charcoal needs for a hundred thousand troops cannot support it. You spend a month sending charcoal to the front line, and the front line soldiers are exhausted in ten days. How can the logistics of charcoal bear it?"

Li Yuanai said with a strange look: "No, the charcoal distributed by the court can be burned for three days."

Li Zhi was almost desperate and said in a bad mood: "It's really 'why not eat meat minced'. The charcoal sent to you by the court is white charcoal, which is a tribute to the court. It is a charcoal made with special techniques with high-quality hardwoods. Use white charcoal to keep warm to a hundred thousand troops? Why don't you choose Rui charcoal? Rui charcoal is charcoal tributed by the Western Regions. It is made of rare hardwoods in the Western Regions. It is more than a foot long. The charcoal is green and hard as iron. It is burned in the furnace without flames and has light. Each can be burned for ten days, and its heat is too hot to be approached."

He paused and said, "What's more, white charcoal has a fatal weakness and is extremely susceptible to moisture. The northeast is wet and cold. How to transport it in large quantities?"

Li Yuanai was stunned and suddenly slapped his thigh and said, "Tea ceremony charcoal, you can use tea ceremony charcoal."

Li Zhi was surprised and said, "What is tea ceremony charcoal?"

Li Yuanai smiled and said, "It is one of the most advanced charcoal, which combines the spots of white charcoal and black charcoal, and a magical tool for heating."

In his previous life, he went to the Northeast to buy oak.

Oak International is called Chinese oak. Its wood has a large proportion of weight, hard texture, large shrinkage and high strength. The color is light apricot yellow. After using it for a period of time, it will turn brown and red with unique wood grain, clear and beautiful texture, appear dignified and steady, elegant and quaint, and is very suitable for making furniture and floors.

Oaks are widely distributed, but truly good oaks are spread all over the Northeast, especially Changbai Mountain and Xing'an Mountains.

When talking to the Northeast oak merchant, the other party introduced the characteristics of oak and specifically mentioned the tea ceremony charcoal.

The reason why oak is expensive is not only used to make furniture, but also to make tea ceremony charcoal.

Tea ceremony charcoal is black charcoal, but it has the characteristics of white charcoal, which is resistant to burning and has uniform heat, no pollution, easy to ignite, and moisture resistance.

In ancient times, the highest etiquette of wealthy families in hospitality with tea ceremony was the most ritual of the tea ceremony.

Even in modern times, Japan, which retains tea ceremony culture, has purchased tea ceremony charcoal from the Northeast to meet domestic demand.

Li Yuanai didn't care so much at the time. The merchant introduced this way just to increase the price.

In his era, he paid attention to practice and convenience.

Even in Japan, there is only a small part of the tea ceremony that has maintained the complicated ancient times. How could it be that demand is so great?

After Li Zhi talked about common sense in this area, he immediately remembered this memory.

The method of making charcoal is very simple and not difficult at all.

The difficulty lies in the lack of wood.

Isn’t the front-line army located in the Changbai Mountains?

There is nothing else in Changbai Mountain, but there are many oak trees.

Especially in this era, Changbai Mountain has not undergone large-scale destruction and oak is not difficult to find.

Li Zhi was a little confused.

Li Yuanai hurriedly said, "I have read an ancient book and said that a tree called oak is everywhere near Taibai Mountain. This tree is hard and huge, and can make charcoal, taking into account the characteristics of white carbon black charcoal. We do not need to transport charcoal to the front line. We just need to recruit good charcoal makers and start kilns on the front line to cut oak charcoal on the spot to serve the needs of the army."

Taibai Mountain is Changbai Mountain, but it was called Taibai Mountain in this era.

Li Zhi looked at the sixteenth uncle in front of him speechlessly, who was a little unsightly. He could not even tell the difference between white and black charcoal at first, so why did he make a tea ceremony charcoal in a short while?

If it weren't for the real experience of Li Yuan'ai's performance in recent years, Li Zhi would have suspected that he was lying and complained: "Oak wood is made of charcoal, but it is not called oak wood charcoal, what is the tea ceremony charcoal?"

Li Yuanai thought it was right. Tea Saint Lu Yu must have not been born at this time, right?

It is not popular in this era. Tea is more similar to medicine, not drinks. And drinking tea requires oil, including onion, ginger and garlic. Anyway, Li Yuanai is not used to drinking it.

"It's called oak charcoal, it's called oak charcoal!"

Li Yuanai doesn't care about the name. As long as he can help the front-line army, nothing matters.

Li Zhi still chose to believe in Li Yuanai and directly ordered the recruitment of charcoal craftsmen from Chang'an, Luoyang and other places.

Li Yuanai couldn't wait to leave: "I'll go deal with the cotton coat and quilt matter, and wait for the charcoal craftsman to arrive in Jicheng to inform you."
Chapter completed!