Under the leadership of Zhuge Jin, Guan Yu visited the hydraulic forging hammer workshop inside and out. While opening his eyes, he always felt that there were some subtle aspects that could be improved, and he couldn't help but want to ask Li Su himself to give his advice.

For example, he felt that although Li Su had a breastplate cavalry with "leather armored iron breast deck" with iron breast decks, the cost was taken into account, but the protection loopholes were still too big.

Although large hydraulic forging hammers are used to forge the armor or even the scales and leaves, forging some large heart protection mirrors for protection of vests, or forging some arc-shaped armor sheets that are half covered on the outside of the thighs and upper arms. The process cost should also be within an acceptable range, and leather should be used in the rest of the parts.

Anyway, it is still a pilot project, and it always needs to be adjusted a little bit. Guan Yu also knows that these can definitely be changed. Not to mention the other things, he went through so many workshops during the half day of inspection today, but he found that there was a sudden small accident. Everything shows that Li Su's current construction is still crossing the river by feeling the stones and is not perfect at all.

The matter was not big, there were no casualties. It was a tooth chain structure driven by a water truck to the forged hammer. Because the strength of the wooden steering wheel and the hemp rope chain was not strong enough, it broke and the hammer head hit the ground directly. Fortunately, there was no one standing next to the anvil.

Zhuge Jin seemed to have an idea of ​​dealing with such things. He ran over and asked someone to measure and record it to see how big the broken transmission steer wheel and rope chain were. After a little checking according to the accounts, he found that this was an early forged water truck built in February this year. It had been used for three months. The material selection at that time was relatively material-saving, and it seemed that it was not solid enough.

Zhuge Jin told me carefully: "Remember, use beech wood as the transmission steering wheel, the spokes must be more than four inches thick. This kind of three inches thick will not be used later. The spindle should be one foot or two inches thick, and the yellow rosewood is equivalent, and the mahogany oak can be reduced by 20% in diameter.

Well, it’s a pity that this is broken quite thoroughly. Has anyone seen it with their own eyes at that time? Was the rope chain broken first or the rudder gear broken first?"

The craftsmen next to them all said ashamed that they didn't see it.

Zhuge Jin shook his head: "Then we can only rectify both of them. We will keep a close eye on them in the future. If the accident can be reviewed, the Marquis has an order to reward three hundred yuan for wages each time, but we must not cause accidents, let alone lie. Those who cause accidents are killed, and those who have lost their wife, and those who have committed lies and misleading are punished for three years to Chengdan Chong!"

The craftsmen quickly expressed their opinions: "The Marquis treats us so kindly. He can support his family with enough food every day. How many meals of meat are there every month? How dare you deceive your heart?"

An accident during the trial period was handled like this, so who made Li Su not have better scientific management and scientific research methods?

Seeing all this, Guan Yu knew that it was definitely not the time to mass production in the first half of this year. After visiting these workshops, he saw hundreds of semi-finished iron breastplates. The quality was uneven and had not been formally sewn on the leather armor. It seemed that the output of the new leather armor was insufficient, which temporarily restricted the supporting facilities.

...

After leaving the forging workshop, Guan Yu asked Zhuge Jin: "Where is the Boya people? I have some suggestions to tell him."

Zhuge Jin thought for a while: "Brother Boya built a villa on the side of the Neijiang River in Dujiangyan a few months ago, where he specialized in trial production of various water conservancy equipment. Before the general came back, he was fiddling with something, almost looking at it, and he should still be there now."

Guan Yu: "Let's go and have a look."

As he said that, the group did not ride horses, so they walked a few miles and came to "Guanban" on the side of Dujiangyan.

The place name "Guanban" was a market town under Du'an County in the late Han Dynasty. To put it bluntly, it is a scenic spot to visit Dujiangyan.

According to the Three Kingdoms, Liu Chan was later a year and a half after Zhuge Liang's death, but Liu Chan got rid of Dong Yun's preaching control. He went out of the palace for the first time to travel, climbed Guanban and watched the Wenshui River, that is, climbed Guanban to visit Dujiangyan and climbed high to see the scenery. Liu Chan was still very ruling in his early years of eating, drinking and having fun. After he ascended the throne, Liu Chan could not go out of the palace for travel in the 12 years when Zhuge Liang was alive, and the number of palace maids who favored the concubines and palace maids was also limited by Dong Yun.

So Li Su placed his "Water Conservancy Research Institute" in Guanban Dujiangyan Scenic Area, which not only facilitates relaxation, has a good working environment, but also allows you to test and tinker with new things nearby at all times.

It was Guan Yu's first time to come, so he couldn't help but sigh like other ordinary tourists from other places: "Boya's fief is really a good place. He really knows how to choose a place to build a villa called official business, but in fact he takes care of enjoyment. This person... tsk tsk." The fastest update is mobile::

Pushing open the door of the "School", Guan Yu didn't have to be polite to Li Su, and went straight into the inner hall, and no one would stop him because of confidentiality.

After seeing Li Su, Guan Yu made it straight to the point and improved his iron breastplate and asked for a suggestion to add a back heart protection mirror and leg protection.

Li Su was also very straightforward. He stopped busy and washed his hands and said that he could make corrections: "It's okay, you can try it slowly. Now the leather armor production capacity is insufficient and it has not been sewn upwards, so it can be modified.

I originally planned to forge some parts of the armor first. After unblocking the Nanzhong trade route this year, I would take more Nanzhong animal skins to increase the production capacity of leather armor, and then make them into products. Nanzhong rhinoceros skin, elephant skin, and crocodile skins have a lot of production, and the texture is also more tough than the cowhide used in northern Yan's armor. They are all good materials for making armor."

This is not Li Su's innovation at all, because in history, the main strategic materials collected by Zhuge Liang to Pingnanzhong were not only precious items such as gold, silver, pearls and jade, including animal skins, raw lacquer, pack animals, and cinnabar.

The tropical beast leather resources in Nanzhong were the main source of high-quality leather armor in the late Shu Han Dynasty. Although the horses in Nanzhong were not good at running on the plains as war horses, they had strong loads and were suitable for mountain transportation. Since Li Su was familiar with the Three Kingdoms, he would definitely not let go of the answers he could copy.

Moreover, he must have much more things to ask for when he went to Nanzhong than Zhuge Liang. Later generations, Zhaotong, Yunnan and Liupanshui, Guizhou were famous high-quality coal mines, much better than bituminous coal in Sichuan and lower sulfur content. These places were converted to the junction of Zhuti County and Jianning County at the end of the Han Dynasty. The mountainous areas on both sides of the Tushui River south of Zhuti County are relatively easy to transport.

In the late Han Dynasty, there were already craftsmen using coal instead of charcoal to smel iron. The reason why they could not be promoted was that the coal quality in various places was uneven. Without high-quality sulfur anthracite, they could not smelite, otherwise sulfur would reduce the quality of iron.

So Li Su of course had to conquer. He worked hard to open up the shipping of Lushui and Tushui, and let Guoyuan farm to manage the waterway for these benefits.

During the heyday of the late Han Dynasty, the national steel production was only 1,000 tons, and the peak period of the Sui and Tang Dynasties was about 1,500 tons. Compared with the progress in the late Han Dynasty, the steel pouring method was mainly relied on the steel filling method.

The steel production in the Northern Song Dynasty suddenly jumped to 3,000 tonnes per year in the country. The main reason was that in the Northern Song Dynasty, craftsmen finally understood "what coal contains low sulfur and which coal mines can be used for steel on a large scale", thus popularizing coal ironmaking, which can suddenly reach 2.5 times the steel production of the previous dynasty.

In other words, when Li Su entered Sichuan, according to the archives during Liu Yan's term he searched, the annual steel output of the entire Yizhou was approximately equivalent to 200 tons in later generations.

If he could create high-quality anthracite mines in Zhuti County and Jianning County, if other smelting technical conditions remain unchanged, he would only add the variable "promoting coal ironmaking" and raise the annual steel output of Yizhou from 200 tons to 500 tons.

Isn’t it so pleasant to make tools, equipment and iron armor that there are three hundred tons of extra iron?

A piece of iron breastplate is calculated as the loss, and prepare fifteen kilograms of iron forging. Three hundred tons of extra iron is roughly equivalent to the consumption of 20,000 pieces of iron breastplate. Even if only half of them are divided into pieces to build weapons and armor, there are still thousands of sets.

Li Su couldn't tell Guan Yu all these words for a while, so he just drew a big pie to let Guan Yu know that "the current construction is only a pilot period and has not been promoted on a large scale. All large-scale production will have to wait for the continuous transportation of material resources in Nanzhong."

Guan Yu originally didn't understand geography very much. After hearing this, he was eager to try it out. He expressed his willingness to let Gao Shun's camp go to Nanzhong to see the world. At that time, he could even use war instead to train, so that the soldiers who were newly formed into the camp could see more blood. It was the iron armor they needed to expand the army, and they earned it from Nanzhong.

Li Su repeatedly dissuaded: "Chief Yun doesn't have to worry, there are opportunities. If Nanzhong is not convinced, he must fight. However, the road is dangerous and far, so you can't send too many troops. At that time, I plan to let the soldiers follow the grain transport fleet to the front line, train more troops, and take into account military losses. Anyway, if you have the chance, you will definitely work with Chang Chang and Yide."

The "let the troops rotate with the grain transport fleet" mentioned by Li Su is that in the future, during the process of Pingnanzhong, every time a fleet transports grain to the front line, the escorted soldiers stay on the front line to fight, while soldiers who have been fighting for several months will escort empty ships or ships loaded with plundering materials in the South China. This will allow a large number of new recruits to be bloody and reduce the threat of soldiers' casualties caused by tropical diseases. The diseases caused by the incompatibility of the local environment will often worsen with time. If you can return home on holidays for a few months, the soldiers' environmental adaptability will be greatly improved. Next time it is the turn to go south. With the first buffer, you may not be unacceptable to the local environment.

Guan Yu hadn't thought of these yet, so he just followed Li Su's arrangements for the time being.

"Boya is thoughtful, so I don't need to say more about these." Guan Yu admired, and while observing the semi-finished products that Li Su was fiddling with, he was a little curious when he saw several machines, he couldn't help asking, "What are these? Could it be that they are also the most important national weapons that are convenient for building weapons and armor? They look very exquisite, how can you think of them?"

Li Su subconsciously glanced at him and smiled, "Oh, this, this is something I've been having trouble recently. Anyway, I can't do anything else to prepare for the horse and soldiers, so I'll do some tricks and tricks that are related to people's livelihood.

The hydraulic mills I asked Ziyu to build have always had a bad business. The people were unwilling to pay 30% of rice bran to come to the official mill to grind rice. They would rather push and even pound rice at home.

So, I want those peasant women to find something to do. They can make some official Dashu brocade workshops so that the peasant women can know that they can pound rice at their own time. They can come to the official workshop to weave some Shu brocade to earn more. This will help me promote more efficient productivity."

When Li Sugang said this, Guan Yu hadn't understood it yet, Zhuge Jin called out: "Brother, I'm sorry for saying this. The dozen mills that have been built are basically full, and they will crush rice and flour for at least ten hours a day. Sometimes they even do not hesitate to light lamps and oil, and light a small lamp at night to continue to send people to take care of them. Is this business not good?"

Li Su smiled: "The account cannot be settled like this. I have seen it. At present, some large households use ships to transport grain to Pi County for 50 or 60 miles to grind rice, so they can only eat enough for full production capacity. We rely so much on the number of mills to get business.

But judging from the proportion, within a few miles around the mill, at least 80% of the people who are most convenient to come to Yungu are still grinding themselves. This is our sorrow."

Guan Yu was confused when he heard this and interrupted curiously: "Can you tell me from the beginning?"
Chapter completed!