"Shuigen, it's so dry here, and it's bare, where will there be water." The second egg doesn't want to do it, he wants to be lazy.

"We're all here, dig and see. You must know that the terrain here is high, if we dig out water here, we can lead it to Wanfu Village, and it will be much more convenient for us to wash, cook, feed the cattle and drink water. Shuigen is persuading everyone, and with the expansion of Wanfu Village, the problem of water diversion is becoming more and more prominent.

Most villages are built on the water, but Wanfu Village was originally only used as a temporary base for the people. It was close to the mines, and as more and more houses were built, many people began to write letters to their families to move in. At that time, it was inconvenient to herd cattle and sheep here, and raise some livestock, and it was inconvenient to rely on only a few wells.

So the people began to dig again, and with a bang, the iron hoe of the second egg dug out a black thing.

"What is this?" Mizugen noticed next to him, and he picked up the black stone and looked at it.

"Look, there's still one down there!" Someone shouted again.

Erdan is a rough nerve, and he has a simple opinion on unsolved things: "It's just a broken stone, what's there to look at."

"It's not a stone, it's a charcoal!" The man cried out again.

"Ryoko, what is this?" Mizune didn't know what carboniferous was.

Your guy named Ryoko was overjoyed and said, "Brother Mizune, this thing is a treasure." It can be burned as firewood, and it will not be extinguished overnight. If you can use this to smelt copper, it will be much better than firewood! ”

A lot of charcoal and firewood is needed to smelt the copper mines, and the wood on the surrounding hills is almost all cut down. If this thing can replace firewood, it will be a great joy.

"You mean really?" Mizune asked.

Erdan still didn't believe it, he scoffed: "Pull eggs, I haven't heard that you can use stones to burn fire."

Ryoko looked at Erdan: "Do you dare to bet, if this thing can be used as firewood, you give me the current person to let me call for a month."

Erdan thought for a while: "Okay, if you can't burn the fire, you can also be a slave for me."

Ryoko picked up the iron hoe and dug a few more times, and then threw himself into the soil: "Yes, open-air coal, everywhere!"

Pan Da was stunned and high-spirited, the emperor really treated himself well, and this Huangling Mountain was in full swing.

"Commander Pan, Commander!"

Pan Da, who was patrolling, was stopped by a shout, and he turned around and saw several people running over.

Liangzi was panting, holding a pile of black stones in his arms, and said breathlessly: "Commander Pan, this is what we found in Bald Ridge."

Pan Da was stunned and looked at these black things: "What is this?"

Ryoko held it in his arms: "This is called charcoal, which can replace charcoal and firewood."

"What?" Pan Da was obviously surprised: "You mean these stones can make fire?"

Mizugen believed Ryoko, and he nodded: "Yes, if this thing is cultivated in the furnace, it will not be extinguished day and night."

Seeing that Pan Da was still hesitant, Liangzi hurriedly said: "Don't hide it from the commander, my father has gone down to the charcoal well, and I know this thing."

Pan Da was stunned and believed: "It's really so magical, how many other things are there in Bald Ridge?"

Liangzi looked at the hard charcoal in his hand: "The commander will know after a try, according to the villain's observation, there should be all under Bald Ridge."

Now Pan Da is worried about the matter of fuel, which is very large in copper smelting, especially charcoal must be used for some steps. So although they are guarding a huge copper mine, the output is still a little unable to keep up. If this coal is really so magical, it solves the fuel problem.

"Okay, I'll try it later." Pan Da was stunned and took them to the room and asked his subordinates to bring out an earthen stove. There was firewood burning in the stove and a pot of water on it.

Towards noon, the soldiers and men came back to rest. Curious, a large number of people immediately gathered around.

Although coal is scarce, there is no shortage of knowledgeable owners. Someone recognized: "Ryoko, where did you get the coal?" It's a good thing, and if we had it, it would be much easier for us to smelt. ”

The others asked, "What is this coal?"

The man said: "Charcoal is like charcoal, it burns longer than charcoal, and the fire is bigger." This thing is amazing, fill it in the stove, and you don't need to add firewood all night. ”

Others were not convinced: "How do you know that there is such a thing in the world."

The man was angry: "I don't know, I used to go down to a charcoal well, this thing is deep in the ground, I have dug this thing in the deep well of Bazhang."

Everyone immediately burst into laughter, apparently no one believed that there was such a thing in a place eight feet deep. But there are also people who speak out in support: "There is indeed this thing in the deep well, and I have dug it."

So everyone believed it, and Pan Da was stunned and believed a little in his heart: "Okay, today I want to see what is wrong with this stone."

The Han Dynasty used coal as fuel. There are coal blocks and briquettes unearthed from the iron smelting site of Tieshenggou in Gongxian County, Henan Province and the baking fan kiln of the Han Dynasty in Guxing, Zhengzhou. Coal mining technology was developed during this period. It is generally excavated along the outcrop, but straight shafts are often dug as wells.

Xue Zong, a Jin person, said that during the Cao Wei period, there were coal wells in Wu'an City that were eight zhang deep. During the Northern and Southern Dynasties, coal was called coal.

The coal here in Balziling is obviously an open-pit coal mine, and due to geographical changes, it is deposited in the shallow coal layer on the surface, and the coal can be mined directly through the open pit.

The firewood burned very vigorously and made a crackling sound. Ryoko threw the charcoal in her arms into the earthen furnace, and after a while, the flames gradually went out.

Pan Da was stunned: "What kind of thing is this, there is not even a flame."

A person who knew the goods next to him shouted: "Don't worry, the commander will come out when the fire comes."

Sure enough, less than a cup of tea, the charcoal fire in the stove began to glow red and burst into flames.

The crowd was overjoyed: "Look, it came out, it turned red, and it turned out that stones can also burn fire."

Pan Da was even more stunned, this thing could actually ignite a fire. And you don't need to chop wood, you don't need to burn firewood, you can burn it directly from the soil.

Ryoko found a clay and began to blow wind on the earthen stove, and after a short time the earthen stove became more and more vigorous, and even the walls of the furnace became red.

驐龠, a kind of air blower.

There is a picture of the iron smelting in the Han Dynasty smelting portrait stone unearthed in Teng County, Shandong, which has 3 wooden rings and two round plates, and is made of leather. Pull the leather open, and the air enters the sliver through the intake valve; The air in the leather is compressed, and the air in the lobe enters the air duct through the exhaust valve, and finally enters the smelting furnace. The technology of iron smelting in the Han Dynasty was greatly developed, which was closely related to the improvement of the power of the smelter. The blower itself is a leather slug, which probably dates to the Tang and Song dynasties.

Pan Da was stunned, not only him, but also the onlookers who ate melons.

Erdan put his arm on Shuigen's shoulder: "Shuigen, this, this thing can really burn."

Mizune: "Don't forget that you asked him to summon him for a month."

Second egg: "......"

Pan Da was stunned and waved his hand and shouted: "Quickly pass on the Jingshi and inform the Son of Heaven that there is this artifact!"