Huang Yuanchang had the courage to come out to remind this matter, but he actually wanted to show that he was sincerely doing good for the Supervisory Government.

Because the person who controls the property of the King of Shu now is Zhu Yurao, who is the supervisor of the government, so the minerals in the former Shu Palace now actually belong to Zhu Yurao.

You must know that the reason why the Shu king line is so rich has a lot to do with the rich minerals such as gold, silver, copper, iron, and gemstones in and around Chengdu.

Huang Yuanchang thought that Zhu Yulao proposed to cancel the mining tax exemption privileges because he didn't know about it.

Unexpectedly, Zhu Yu'ao's expression remained unchanged after hearing this: "Of course, the Prince of Shu is among those who have canceled the tax-free privileges for mining. From now on, under my rule, anyone who mines or smelts will need to pay taxes!"

Hearing this, Huang Yuanchang was stunned for a moment, thinking: How much would it cost to pay normal taxes on so many minerals in a year?

Then he suddenly thought: No, aren't these taxes sent to the Supervisor's Office in the end?

No wonder.

Huang Yuanchang thought he understood what Zhu Yuluo was thinking, so he returned to his original position and stopped talking.

Li Yan and Liu Linchang understood that there was some difference between the property controlled by the Shu Prince's Palace or Zhu Yu'ao and that controlled by the Jianguo Palace.

I admire Zhu Yuyao for being willing to set such an example.

So they all said together: "It is wise to supervise the country!"

Zhu Yasuo was very indifferent and continued to the next topic.

"In addition to reforming the management system of iron mines and iron plants, what we also need to do is to improve the smelting level and production efficiency of steel.

Fei Sibu, please distribute the "Ironmaking and Steelmaking Suggestions" compiled by the Prince Consort."

Upon hearing this, Fei Zhen'e picked up a stack of booklets bound with A4 paper from the case and distributed them.

When Li Yan, Liu Linchang, Li Zuo and other five people were looking through it, Zhu Yuyao introduced: "Here are some suggestions made by the prince-in-law regarding the existing iron-making and steel-making technology of the Ming Dynasty.

Li Zheng and the two Ordnance Bureau ambassadors should know something about our Ming Dynasty iron and steelmaking technology, right?

After reading it, let me tell you whether the suggestions in this booklet are practical and feasible, and whether there are any mistakes.

If you don't understand anything, you can ask me. You must understand the above technology today, and then set up a blast furnace experiment in Chengdu.

Once the experiment is successful, it will be used in the government-run iron plants in Chengdu and Qiongzhou, so as to improve the quality and production of steel in these two places as soon as possible."

"yes."

Li Zuo, Huang Yuanchang, and Zheng Xiang agreed and looked more seriously.

Although they are not craftsmen, they have managed arms manufacturing all year round, so they naturally have some understanding of Ming Dynasty steel technology.

Knowing that the suggestions above were all put forward by the consort of the "Immortal Realm", the three of them were a little afraid that they would not understand.

But after looking inside, the three of them discovered that the suggestions put forward by the consort were basically aimed at making breakthroughs in Ming's existing technology.

That is to say, the existing technology of Ming Dynasty is broken through a layer of paper and upgraded to a higher level.

Not only could they understand it, they even couldn't help but beam with joy as they watched it. They almost couldn't help but scream with joy in Chengyun Hall.

Although Li Yan and Liu Linchang don't know much about steel smelting technology, they are both smart people.

Therefore, we can all see how helpful the suggestions above are to improving the smelting level of Daming Iron and Steel.

After a while, Li Zuo was the first to read it.

I saw him holding the book and walking out of the queue, and said excitedly: "Supervise the country, I have read it, and the suggestions above are not only practical, but also very helpful in improving our steel smelting level.

As long as it is implemented in iron plants, it can increase the current steel production by at least ten times, or even dozens or hundreds of times!"

Zhu Yulao was also very happy when she heard that the suggestions listed by Hao Guangming were recognized by her technical officials.

With a smile on her lips, she finished reading Huang Yuanchang and Zheng Xiang, and then asked, "What do the two ambassadors think?"

Huang Yuanchang said: "Li Zhengyi is right. This dredging proposal can at least increase steel production tenfold."

Zheng Xiang nodded accordingly.

The two of them were not trying to flatter each other this time, but were sincerely impressed.

Although the government-run ironworks were in decline in the late Ming Dynasty, private ironworks were very prosperous. Compared with the Song and Yuan Dynasties, the level of steel smelting has made great progress and is completely ahead of other countries in the world.

For example, the use of piston blowers has the same structure and function as modern blowing equipment, but Europe did not have such inventions until the late eighteenth century.

Another example is the technology of "using a crucible to smelt wrought iron and convert pig iron into steel", which was not available in Europe until the 18th century.

Another example is the "raw and cooked iron-making furnace" recorded in "Tiangong Kaiwu", which cleverly connects the iron-making furnace and the steel-frying furnace, and has achieved semi-continuous mass production of steel.

In addition, Suzhou Steel's steel filling smelting technology and pig iron pouring technology were unique in the seventeenth century.

Although these technologies were not completely spread in the Ming Dynasty, they were invented and created by Ming craftsmen.

In addition, the efficiency of private iron-making is not low. One of them is a bottle furnace, which is quite large and can smelt 3,600 kilograms of iron in one night, which is more than 6,000 kilograms in one day!

Moreover, the scale of iron smelting plants is not small. Not to mention the government-run iron plants, many of them have thousands of people. Even some private iron plants in the south have thousands of people.

The smelting level of these ironworks around Chengdu Prefecture may not have reached the top level of the Ming Dynasty, but for this reason, more improvements can be obtained from Hao Guangming's "suggestions".

For example, the recommendations mentioned a kind of high refractory brick, which can be made from refractory materials (high alumina clay) available in Pujiang, Dayi, Pengzhou and other places, and can be directly used to build steel-making furnaces.

(Steel-making temperature exceeds 1600°C, and high-refractory bricks made of high-aluminum clay can withstand high temperatures of 1700 to 1800°C.)

Another example is the transformation of iron-making furnaces, steel-making furnaces, and blowers, which can make the quality of iron and steel obtained from each furnace better and the output higher.

In addition, it was also proposed to establish a hydraulic forging hammer to replace artificial forging of iron into steel.

As for standardizing the smelting process to improve production efficiency, it is naturally mentioned.

In the view of Li Zuo and the others, although the various suggestions in this proposal are not easy to implement, they are indeed feasible.

And once it is implemented, as they said, it is not impossible to increase steel production by at least ten times, or even dozens or hundreds of times.

After listening to Huang Yuanchang and Zheng Xiang's words, Zhu Ayao's smile became thicker and she said: "Since you all think it is feasible, let's discuss how to implement these suggestions."

"yes!"

···

In order to improve the iron-making and steel-making level of the iron factory under her control, Zhu Yugao held a whole day meeting.

After that, she didn't care about the specific implementation - if she still had to handle the subsequent things, what would Li Zuo and other officials in charge of specific affairs do?

The next day.

Zhu Aao took Liu Linchang to the Arms Bureau again.

After the inspection was completed and they returned to Chengyun Hall, Zhu Ayao handed a brochure to Chief Liu Lin and said, "This is a brochure for establishing an arsenal. Assistant Manager Liu should take a look at it first."

Liu Linchang was used to Zhu Aa'a frequently taking out a bound booklet on A4 paper, and was even used to reading it horizontally.

In addition, the booklet did not have many pages, so he read it quickly and was amazed.

"The 'standardization of production tools and products', 'implementation of assembly line production' and 'large-scale use of hydraulic machinery' mentioned in this volume are all wonderful ways to improve the efficiency of arms production."

Zhu Aisa smiled and said: "These methods were obtained by the prince-in-law from later generations, so they are naturally wonderful methods.

What Assistant Manager Liu needs to consider is where to build the arsenal and how to implement these wonderful methods to improve the efficiency of armaments production as soon as possible."
Chapter completed!