Chapter 430: Eyeballs Are Not Biological

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If you want to understand it simply, you can think of it as a stove for roasting sweet potatoes made from gasoline drums. Put the sweet potatoes one by one from the top, cover them, roast them in the oven, and then take them out. The blast furnace is poured from the top layer of ore and a layer of coal, of course, it can't be taken out from the top, it is all burned into molten iron, and only the bottom of the blast furnace can be opened, and the slag and iron are produced.

If you want to burn the ore into molten iron, you need to drum in a lot of air to support combustion, and the stove for roasting sweet potatoes is not strong, so you can fan it with a fan, but the blast furnace may not be enough to fan the wind with a fan. Han Ji can combine the hand-cranked fan, the transmission and the water wheel, although the water wheel rotates slowly, but through the speed change of the transmission, the fan can rotate rapidly, so as to continuously blow a large amount of air into the blast furnace. This is probably a little better than the effect of the water row blast he invented in the original history.

However, the blast furnace needs to maintain the furnace temperature that can burn the ore, and when the cold air is blown in, the temperature in the furnace will drop sharply, so that a process of blasting, heating, blowing and heating up again is formed, which is not only time-consuming and time-consuming, but also wastes a lot of resources. Liu Han said a word about sending hot air to the blast furnace, the reason is not profound, Han Ji quickly figured it out, the question is how to turn cold air into hot air?

You know, if you want to reduce the original temperature in the blast furnace as little as possible, the hot air sent in, not to mention roasting sweet potatoes, is estimated to be a matter of minutes when you roast a camel. Then, Liu Hanshao carried out a new education that combined inspiration and flickering for Han Ji and other technicians, for example, let's build a hot blast stove in the middle of the air supply pipe, and put some bricks like honeycomb in it. There is also the kind of poisonous gas that can stun people blown out of the blast furnace, which is actually coal gas, if you can cover the blast furnace and connect it to a pipe, the gas will be collected and transported, and it will be used to heat the blast furnace, and there is no need to waste coal.

The first time I heard that a stove was specially built to "burn the wind", Han Ji felt both happy and stressed, his brows were wrinkled, and his eyes were happy and worried. Liu Hanshao didn't expect them to be able to study it all at once, as long as he gave a general direction, let them slowly tinker with it.

"Your method of transporting materials by winch is too backward, manpower is limited after all, take the time to go back to Luoyang, there are treasures in the institute, it will be of great help to you."

Han Ji asked in surprise, "What baby?" ”

"Steam engine."

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To the north of Pi's, to the north and to the southwest, there is Caisangjin.

Along the big river, from Caisangjin to the north, about ten miles is the famous Hukou Waterfall.

When Liu Hanshao arrived in Caisangjin, Xiahoudun had already brought people to wait here, but the Minister of Water Resources of the Great Han Kingdom had obviously just arrived, and he didn't even wear a "work official uniform" with a badge ribbon. The trouser legs were rolled up to the calves, the shirt sleeves were rolled up to the arms, the calves were muddy and not yet dry, and the face was gray and washed out by sweat. It's just that what shocked Liu Hanshao the most was that Xia Houdun was wearing an eye patch on his left eye.

"Minister, Hang, please see Your Majesty."

Liu Hanshao hurriedly took a few steps forward, held Xiahoudun's arms, stared at his blindfold and asked, "What's the matter?" ”

Xiahoudun smiled, as if he was still a little embarrassed and replied: "It's okay, when digging the canal, let the stones burst a little." ”

Liu Hanshao turned around and asked Yang Xiu, Zhuge Jin and others: "Why didn't anyone tell my brother?" ”

Yang Xiu and Zhuge Jin were silent, Cao Cao also wanted to speak and stopped, but Xiahoudun hurriedly said: "Your Majesty, Your Majesty, don't be angry, you can't blame others for this, I don't allow them to say it." ”

"You fool, even if you don't tell your brother, you have to go back to Luoyang for treatment. We have President Hua in Luoyang, so many hospitals, and ......"

"The construction period is tight, and I can't do without it."

Immediately, Xiahoudun smiled bitterly and said: "The minister asked the doctor in Hedong to take a look, saying that the eyeballs were broken and useless. ”

Poor man, my brother didn't let you lead the troops into battle, why didn't you keep your eyes? Could it be that this eyeball is not biological, and is destined not to be used by you? Is this the cruelty of reality, or is it a trick of fate?

Liu Hanshao couldn't help but say, "Yuan let ...... Brother, you have suffered! ”

Hearing Liu Hanshao shouting "brother", Xiahoudun's heart warmed, so he no longer called His Majesty, but said: "Han Shao, you can't say that." I am a vulgar and despicable husband, I can get you not to give up, and let me serve the country, this is my blessing. ”

His eyes were blind, and he didn't even complain, Liu Hanshao's eyes were red, and he seemed to be unable to flicker anymore. Coincidentally, Cao Cao couldn't help but step forward, so he patted Xiahoudun's arm and said to Cao Cao: "Good brother, this is our good brother!" ”

Cao Cao knew that Xiahoudun's eye was injured, but he had not seen him after the injury, and when he saw it just now, he felt pain in his heart, but Liu Hanshao stepped forward first, so he restrained himself and put himself behind. At this time, he looked up at Xiahoudun's blindfold, and saw that Liu Hanshao's eyes were red, and he didn't know whether he should feel sorry for Xiahoudun or be happy for him, so he had to nod again and again with emotion.

"Han Shao, brother, it's rare for you to come here together, let me accompany you to take a look at our canal."

Liu Hanshao and Cao Cao cleaned up their respective moods and said in a loud voice, "Okay." ”

The river channel built by Xiahoudun is on the east bank of the big river, the starting point of the south is Caisangjin, and the starting point of the north is one or two miles upstream of the waterfall, with a total length of nearly 20 miles. The bottom of the river is seven zhang wide, and the top is ten zhang wide, and the excavated earth and stones are piled on both sides to build an embankment. It's just that some places on the east bank of the river are close to the mountain, and the mountain has to be dug to open a canal, so the river embankment is connected to the mountain, which is more like a road built by the side of the mountain.

The river is very neatly built and extravagant, because both the bottom of the river and the embankment are covered with stone slabs and cement. Xiahoudun said, don't look at the riverbank was originally mostly mud and sand, but the further down you dig, the more complicated the situation becomes, there are hard rocks, I don't know how big they are, and there are also rocks that look like rocks, but they break when you reach out and grab them. If the river is not paved completely, once the water is released and navigable, the water flow is very rapid, and it may not be long before the river is washed uneven, bringing hidden dangers to boats, and even rushing out of the waterfall, so that the river is completely scrapped.

Think about it, the upstream river is so wide, when you get here, it shrinks like a spout, and the mud and sand are all down, if the rock is not hard, how can it resist the erosion of thousands of years?

Liu Hanshao asked suspiciously: "It's okay to say that if you encounter soft rock, if you encounter hard rock, it will be very difficult to excavate, right?" ”

Xiahoudun explained: "Each has its own troubles, but we always have a way to deal with it. To catch up with the soft place, you must first tamp it, and then lay the stone slab, and when you catch up with the hard place, you should first set it on fire, and then pour cold water on it, and it will be easy to dig. ”

This is the "hot method", using the principle of "hot expansion and cold contraction", during the Warring States Period, when Li Bing and his son built Dujiangyan, they used this method.

Liu Hanshao gave Cao Cao a thumbs up, but praised Xiahoudun: "Talented!" ”

Xiahoudun said "ashamedly": "Han Shao doesn't dare to say that, this is all the credit of those technicians, and I will lead everyone to work." ”

"Isn't it good to lead them to work?"

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Heading north along the repaired embankment, there are still quite a few people working in the river. Nowadays, among all the construction sites where there are captives working in the Han Dynasty, Xiahoudun has the highest proportion of prisoners here, because most of the time, they just dig pits and build soil, and they really have no technical content.

However, there was a rebellion in the past, and now Liu Hanshao came to inspect the construction site, Xiahoudun did not know how to wake up, and let the prisoners work as usual, which made Xu Chu very dissatisfied, and sent a lot of Yanyun guards to Liu Hanshao's side.

Xiahoudun also noticed the change in the guards around Liu Hanshao, and explained in a little panic: "Your Majesty, in order to be navigable in the spring of next year, it is the minister who ordered them to continue to work, because there is a lot of rain in autumn, and it is rare that the weather is good these days......"

"It's okay, it's okay, that's how it should be."

Liu Hanshao comforted and said: "Brother, I originally wanted to see how everyone usually works, if the slate cement in the river is paved to make my brother look beautiful, what is the difference between it and painting green paint on the mountain for greening?" ”

Everyone was stunned when they heard it, and painted green paint on the mountain? Which loser came up with the idea, is being the emperor blind or stupid?

Liu Hanshao didn't explain, and asked Xiahoudun again: "These people are still working hard, right?" Is it easy to manage? ”

"It's ok. Anyway, they don't need to fight and die, and the guards usually don't treat them harshly, and they also teach them to speak more refined words and learn Chinese characters. Haven't we had another reward recently? Whoever does more work, who eats better, so they rush to do the work. It is...... Just ......"

Liu Hanshao asked curiously: "What is it?" ”

Xiahoudun said "ashamedly": "It's just that the minister's money is too little, and if you want them to eat better, you don't have so much money." ”

Liu Hanshao stared at Xiahoudun with wide eyes, as if he was looking at some rare species. Dare to be emotional, but also a person who pays to work?

Don't look at what Xiahoudun said casually, he can use and dare to use the most prisoners, in fact, there is a reason. First of all, Xiahoudun is tall and mighty, with a fierce face, and he will have a kind of deterrence to everyone. But after getting to know this person, you will find that he is actually disgusting and kind, and treats those under him a lot of care, who encounters difficulties, it is common to send money and things; One day the work is too hard, to improve the food for everyone, see a little meat; Even if he was an ordinary captive, he might have drunk the water brought by Xiahoudun when he was tired from work, and he might have been visited by Xiahoudun when he was sick.

In addition, Xiahoudun did it himself, and would roll up his sleeves and work with everyone, digging the deepest pit and moving the heaviest stones. Especially when my eye was injured, I couldn't pull my eye out and eat it in my mouth, but I returned to the construction site two days after the injury.

Everyone advised him to rest for a few more days, but Xiahoudun said: "Our river canal is too important, the sooner it is connected, the sooner it will be cooled and rich, and at that time, the people will be able to live a good life." ”