When the craftsmen learned the technique of the kang kang and after the successful experiment, hundreds of people quickly integrated into Sanchuan County, with Luoyang as the center, and began to radiate to all directions.

Moreover, to build a kang for the people's homes, it does not need wages, only needs to take care of the food, and for a while, everyone looks forward to it.

Since it was the order of the county guard, the first house in the local governor's house was successfully tested, and the villagers cheered for it, and they clearly felt the warmth.

Therefore, the villagers in various places felt the benefits, and naturally there were no obstacles, but they helped each other, and the speed of building the kang continued to accelerate.

Seven days later, the craftsmen had built an iron furnace and then a chimney, all of whom had been seconded from the Shang Workshop.

When Yinggao saw the freshly baked stove, he was also amazed, and the Great Qin Shang Workshop gathered skilled craftsmen from all over the world, which was really worthy of its reputation.

"Childe, it's done!"

Glancing at Gong Yi Qin, Yinggao smiled: "Find a few people to carry it over, let's try to see how it works!" ”

"No."

Under Yinggao's guidance, the stove was connected to the chimney and the ignition began.

After a while, the wood was already burning, and Yinggao threw the coal into it, and he didn't know the difference between anthracite and anthracite, but the stove would tell him.

A quarter of an hour later, the coal burned, and the shogunate became warm.

"Childe, this strategy works!"

Gong lost Qin Daxi, and his cheeks turned red with excitement: "In this way, the entire Great Qin will die a lot less because of the cold." ”

"Hmm!"

Nodding, Ying Gao glanced at Gong Yi Qin, and said: "But burning it like this is not a way, not only is it smoky, but also the price is high, and ordinary people can't use it." ”

"The coal is crushed into powder, and then mixed with wood chips, lime, loess, etc., and kneaded into briquettes one by one.

Speaking of this, Ying Gao looked at the smoke in the chimney, thought for a moment, and said: "By dry distilling this large bituminous coal, you can get a kind of coke, which is heat-resistant, has strong firepower, and can be used to forge bronze and iron. ”

"You are responsible for this matter, and no one will disclose the specific matter, otherwise the military law will be engaged in ——!"

"No."

..........

The reason why Yinggao did this was to be able to forge iron weapons on a large scale, and then replace bronze weapons.

Great Qin is not only the Central Plains, but also countless sea frontiers, in his lifetime, he does not know whether he will drive big ships to run rampant on the ocean, but the seeds must be planted.

Everything was on the right path, and before I knew it, fifteen days had passed.

Wang Hu is training, and Meng Xiao is even more so.

In Sanchuan County, Ma Xing is in charge, and at this time, Yinggao is idle. Lying in the shogunate, it was warm, and for a while, he was too lazy to move.

Briquettes continue to be produced, and the whole Zhengzhou is busy, and at this time, briquettes have also entered thousands of households, whether it is to burn the kang or not to use it, the sales volume continues to rise.

At this time, Ingengo also realized that someone needed to run this matter, and then it could maximize the benefits.

.........

In desperation, Yinggao returned to Xianyang.

Although coal is not used, it belongs to the mining industry, and the large use of coal will inevitably make iron tools swept in.

When the time comes, there will inevitably be a huge influx of money.

.........

"Tie Ying, you wait here, this son will go by himself!"

When the weather turns cold, waiting on the carriage and horse field is a difficult thing to do, and Iron Eagle is only his guard, not his retainer, and sometimes, he needs to grasp the scale.

"No."

Approaching the royal city, Tie Ying no longer worries about Yinggao's safety, after all, the Xianyang Royal City is the most heavily guarded place in the world.

"The sons and daughters visit their fathers, their fathers are ten thousand years, and the great Qin is ten thousand years old——!"

Walking into the study, Yinggao bowed solemnly and said.

"Hmm!"

Ying Zheng was not surprised by Yinggao's appearance, and he got the news as soon as Yinggao set foot in Xianyang City. It's just that he didn't say anything.

Putting down the bamboo slip in his hand, Ying Zheng looked at Ying Gao, and after half a sound, he said: "You are not in the camp of Jingxian County, and you have not received the edict of the king, why did you suddenly return to Xianyang?" ”

Hearing this, Yinggao's heart moved, and then suppressed the thoughts in his heart, and said to Yingzheng: "Father, my son has found a coal mine in Sanchuan County. ”

"And it has been mined, it can be used as fuel instead of charcoal!"

"After the study of Gong Yingqin, he found that this coal can be used for heating, fire, and forging iron, so his son came to report to his father."

Hearing this, Ying Zheng's eyes burst into extreme light, staring straight at Ying Gao, and said, "Is this true?" ”

At this moment, Ying Zheng was also shocked.

He naturally knows what kind of changes it will bring to Great Qin if what Yinggao said is true, and as a king, he naturally knows the current situation of Great Qin.

In the Great Qin, the bronze craftsmanship has reached an extreme, and even the weapons manufactured exceed the iron tools, which is also the reason why the three armies of the Great Qin have not changed their clothes.

All kinds of thoughts flickered, flashing in Ying Zheng's mind, and suddenly, his heart was full of anticipation.

Facing Ying Zheng's expectant gaze, Ying Gao paused word by word, and said: "This is natural, the sons will never deceive their fathers, in Sanchuan County, the sons and the princess have already conducted experiments." ”

"At the same time, in Sanchuan County, the ondol technology was researched, and the furnace was created, and the effect was good after testing, but there is still room for improvement.

"What is a fire kang?"

Although he has not seen the stove, Ying Zheng can probably guess a thing or two, but he is really confused about the fire kang technology.

Ying Gao bowed his hand slightly to Ying Zheng, and said: "The fire kang is built with bluestone blocks and a kang wall, and there is a flue in the kang wall, which is covered with a relatively flat stone slab, and the stone slab is covered with mud to touch the flat, and the kang mat can be used after the mud is dry. ”

At the same time, the kang has a stove and a smoke mouth, the stove is used to burn firewood, and the smoke and heat produced by burning wood pass through the wall between the kang to heat the stone slab above to generate heat, so that the kang produces heat. Finally, the smoke is discharged from the ondol smoke port through the chimney. ”

"Since the stove and smoke are outside, it is safe to burn even thin coals!"

"This not only solves the problem of sitting and sleeping, but also dissipates heat through so many kang surfaces and maintains a high temperature in the room."

……

8)