Although there were some accidents in the blasting, the sand and gravel came to the face, the ears were deaf, and the blast furnace collapsed, but the effect was better.

Coming down from the viewing platform, Zhao Dezhao first visited the unlucky guy who was injured by the stone, calmed him down, and took the officials to start the inspection.

"This is a cement road, the stone of the mountain is powdered, and then water is added to solidify it, forming a flat land, which is hard over the stone. As a result, it can be used to build roads, river embankments, bridges, and houses in the future, and the effect is amazing. ”

Many officials saw this road when they came, but they didn't look carefully to greet Zhao Dezhao.

At this time, many people lie on the ground to observe the smooth cement road, and the blast furnace has this cement road to transport steel, which saves a lot of effort.

Lian Kun also asked someone to bring over a hammer and hit it on the road. "If it's an ordinary rock, it will be broken when you hammer it. But cement is different, it is more tough, and there will only be pits when knocked, and it will not crumble. ”

Yao An, a thorn from Fushui County (Zhongxiang), saw Zhao Dezhao with a smile on his face, and leaned closer and said: "Stay behind, the Han River crosses Hanjing and turns to the south, and since then, the terrain on both sides of the strait is flat, and it floods every rainy season. This cement, I am in great need of Fushui County. ”

Yu Zhuoran, a thorn from Jiangling, hurriedly said: "No matter how big the water in Fushui County is, is it comparable to my Jiangling area?" Left-behind ......"

Zhao Dezhao smiled: "Don't fight, don't fight." This cement is different from steel, which requires coal and iron ore to produce, and it is an important weapon of the country. When the cement formula here in Hankyung Prefecture is stabilized, production will be opened in all state capitals.

As long as there is limestone in the local area, it can be produced. Therefore, after you go back, in addition to stabilizing your farming work, you must send people to check all kinds of minerals in your jurisdiction.

In the future, this cement plant will be repaired to every city, every township and even every village in the Great Song Dynasty, and all this will require your hard work. ”

Everyone was shocked. "In this way, wouldn't it exhaust my Great Song national strength?"

Zhao Dezhao said with a smile: "It's not in place at one time, first build the road of the big city, and then build the road of the township, do what you can." ”

An official whispered: "With this thing, the city will never be afraid of being breached in the future." ”

Zhao Dezhao laughed when he heard this: "This is true, but my Da Song is not only this skill, in addition to cement, there are many new things." It took a few years to develop, so that the army of the Great Song Dynasty could resist the enemy outside the borders, and this city would no longer need a city wall in the future. ”

A group of officials looked at each other, always thinking that this was okay, but why couldn't it be convincing?

If the city has no walls, is it still called a city?

The Great Song Dynasty is strong, although it can defend against the enemy outside the borders, but is it about to decline?

Cai Lingxing couldn't help but ask: "Stay behind, since the city doesn't need a city wall, why do you want to lead the water of the White Dragon River and the Black Dragon River to the west moat of Fancheng?" ”

Zhao Dezhao said with a smile: "This involves another big plan, the moat is not for protection, but for water and pollution." You've all seen the ditch in the west of the city, right? Those ditches are just for sewage and purification.

In the future, if any city wants to build a house, it is necessary to dig a ditch and discharge sewage. Leave a wide enough road to cope with the burden of future population increases. ”

Although the resettlement site in the west of the city has not yet been built, only roads have been left and ditches have been dug, but the planning drawings have come out, and the painters have drawn future renderings.

As for the resettlement site, it is the largest project in Hanjing Mansion today, and these civil officials have naturally known about it for a long time in Hanjing Mansion.

Hanjing Mansion is the benchmark set by Zhao Dezhao, and any urban construction in the future must be based on this requirement and this standard.

It is necessary to let sewers and sewage appear in this world a thousand years ago and become the benchmark of the world.

The main road of each city cannot be less than 50 meters wide in large cities, 30 meters wide in small cities, and less than 10 meters wide in auxiliary roads.

With such a standard established, the city in the future will not need to be demolished every 10 years or 50 years.

Everyone sighed that it was too expensive, but Zhao Dezhao pretended not to hear.

The construction of Hankyung Mansion will not bear fruit until next year, and when these officials see the newly built community next year, they will know the benefits.

Now let them spend an extra third of the cost to build underground pipelines, they are reluctant, and they will be willing to do so in the future.

In later generations, the cost of such a project was twice as much, because the construction of underground pipelines was no less expensive than building a two-story building.

But in the Great Song Dynasty, labor is not costly, that is, it costs a little more material.

The materials are all controlled by the government, and this cost is pitifully low after removing labor.

It's not like building a city at a time, and this cost can still be afforded.

After visiting the cement road, everyone came to a blast furnace that was still running.

Without a power source, a blast furnace today requires hundreds of people to keep it running.

Filler, discharging personnel, transport personnel, charcoal burners, and two large teams of air blowers.

Filling, the personnel who discharged the material are wearing thick linen overalls, which are a bit similar to the sacks of later generations, only slightly thinner.

Most people wear their linen clothes wet on their bodies, so that they will not be burned if the gas holes in the furnace explode and the iron filings splash.

The blowers were naked one by one, each wearing only a crotch cloth, revealing their toned muscles and shaking the wheel.

With the help of the lever principle, this roulette wheel pushes a huge blower, two blowers, one up and one down, and simultaneously supplies air to the furnace.

In order to increase the furnace temperature, this air supply does not blow the cold air directly, but passes the air through a warming chamber before it can be blown into the furnace.

This technology is definitely more than 800 years ahead of its time, and compared with later generations, only the pure oxygen supply process is lacking.

But without this pure oxygen, the furnace temperature would not reach 1,500 degrees, and all the iron would only be semi-melted, not melted into molten iron.

Although it is adapted to local conditions and does not have the shock of the big industry in later generations, for these officials, the scene in front of them is also very shocking.

Four furnaces take turns to produce steel, and the steel is transported to the large factory next to it for hammering and forming, quenching, and annealing.

Nearly two hundred craftsmen each took three or four apprentices, each with a different task, making different parts.

So as soon as you come in, you can hear the sound of bells and bells.

It's messy, but it's also orderly.

In addition to making parts for the waterwheel linkage, most of the craftsmen here are still making iron knives.

At least within ten years, iron knives are still in short supply.

Under the guidance of Lian Kun, Zhao Dezhao led everyone along the blacksmiths' delivery channel, all the way north, to the Han River.

There are more than a dozen different large factories here, which are said to be large factories, but in fact, the front and rear eaves are houses more than three meters high, and the roofs are up to five meters high.

However, the progress of the house is relatively deep, about ten meters, more than 20 meters long, there is no partition wall in the middle, only the columns built of blue bricks, supporting the roof.

Each workshop creates different accessories, and the raw blanks transported over are molded and finished.

Most of these officials couldn't understand it, and they just looked around.

Then Zhao Dezhao led everyone to climb across the embankment and came to the 100-meter-wide platform built on the inside of the embankment.

More than 20 waterwheels have been erected here, one husking workshop and two dough grinding workshops are already in operation, and there are dozens of houses next to them, all of which are empty.

It is not surprising that rice hulling and grinding flour, a technique that has been handed down since the Han Dynasty, however, there are several waterwheels with a diameter of 20 meters, which attract everyone's attention.

The diameter of an ordinary waterwheel is four or five meters, and the larger one will not exceed seven or eight meters, but no one has ever seen such a large waterwheel.

Jiangling Thorn Shi Yu Zhuoran saw a lot of waterwheels, because with the help of dense rivers, there are countless small workshops, and almost every village has its own workshop.

He asked in surprise: "Stay behind, such a huge waterwheel, I'm afraid the axle can't afford it!" ”

Zhao Dezhao nodded. "So not only can such a waterwheel not use a wooden shaft, but even a steel shaft can't afford it, and it must use bearings to make the waterwheel run."

"Bearings?"

Zhao Dezhao nodded. "It's a new thing, but it can't be done yet."

Everyone was puzzled, and Zhao Dezhao pointed to a waterwheel with a diameter of four meters and explained: "This waterwheel has two parts of force and can create three or four parts of the product. That waterwheel has three parts of force and can create five parts, and the bearing is equivalent to nine parts, so you have to take it step by step......"

As soon as he explained, everyone understood.

Bearings are one of the most important components of industrial equipment, and they are processed with high precision.

Even if you want to make the simplest, most basic bearings, there is no such process now.

Because the steel balls, inner rings, and outer rings of the bearings all need lathes, grinders, and milling machines to manufacture and polish, and without these equipment, there is no way to produce bearings.

Now we can only upgrade the industry step by step, and we can only think about building lathes and other equipment.

In order to build a lathe, it is necessary to create a standard slide rail, fixture, and drill bit.

This in turn involves all aspects of material technology and processing technology.

After the tedious affairs during this period of time are handled, Zhao Dezhao is ready to spend half a year to overcome these difficulties.

With the experience of the Ming Dynasty, Zhao Dezhao is not worried about these difficulties, but it will take some time and energy.

Only through these brought out a group of professionals can he gradually lose his hands.

At present, only the grinding machine workshop can be operated, and even this grinding machine is actually very rudimentary, so to speak, it is a grinder.

However, with this grinder, the craftsmen who make iron knives save a lot of work.

They don't need to hammer the blade there and then grind it slowly on the whetstone.

The knife edge can now be ground directly on the grinder and then quenched.

Officials are interested in grinders, and simple changes can make tedious processes easier.

They observed in turn, Zhao Dezhao introduced it, and then went out of the workshop and looked at the Peach Blossom Island opposite.

"Stay, then it's a gunpowder workshop?"

(Let's start with the fourth watch today...... ）