My villain, Ximen Qing, married Pan Jinlian at the beginning

And what is the most important weapon for defending the city?Of course it was a cannon.

Now that he has this city wall, Ximen Qing thinks that he can use his thousand soldiers to defend against the attack of thousands of people without much problem.

With the blessing of the Hongyi Cannon, the ability to defend the city will be even more terrifying. Tens of thousands of people may not be able to capture it. Ximenqing's city is only garrisoned by 1000 people!
So Ximen Qing did not hesitate, and directly exchanged the manufacturing technology of this Hongyi cannon.

After exchanging the manufacturing technology of the Red Barbarian Cannon, Ximen Qing's exchange value is still 4000 points.

Seeing the exchange value, Ximen Qing began to think again.

In the end, Ximenqing chose to exchange the 4000 point exchange value for some useful technologies.

After all, Ximen Qing now has more than 1000 troops under his command.

In addition, many refugees also joined the military camp.

The current overall strength of Ximen Qing has reached more than [-] people.

These soldiers who had previously fused heroic souls were [-]% loyal to Ximen Qing.

Ximen Qing intends to build these [-]% loyal soldiers as the core elite army in Ximen Qing's fiefdom.

Now that Ximenqing can absorb refugees and increase the number of troops.

Then it would be a waste of exchange value for Ximen Qing to continue to exchange for Heroic Soul Soldiers.

So, the remaining 4000 exchange points are naturally exchanged for some available technologies, which can be used to build or help Ximenqing's fiefdom.

After watching it for a long time, Ximen Qing was immediately attracted by a technique.

This technique is called the crucible steelmaking technique!
The crucible steelmaking method refers to the method of melting metal material into molten steel in a graphite clay crucible.

It was first applied by the British Huntsman in 1742. He cut the carburized iron into small pieces and placed them in a closed clay crucible.

When heated outside the crucible, the iron material continues to absorb the carbon in the graphite and melts into high-carbon molten steel.

Finally, it is cast into small ingots and forged into the desired shape.

The British Huntsman invented the crucible steelmaking method, which made molten steel for the first time in European history.

The key to this invention is to manufacture a refractory material that can withstand high temperatures of 1600°C to make crucibles.

Since then, various high-quality steels such as tool steels have been smelted by the crucible method.

This crucible smelting technology is also an important technology that promoted the industrial revolution.

In the current Ximenqing army, most of the weapons are made of iron.

First of all, iron is more likely to rust and is not easy to use for a long time. In this case, the cost will be quite high.

In addition, the hardness of iron is far less than that of steel.

And steel can not only be used in the manufacture of weapons.

Steel can also be used in construction, making various tools and so on.

So if steel can be smelted through this crucible steelmaking method, then the effect on Ximen Qing will be huge.

Therefore, although this crucible steelmaking method is still very expensive, it needs a full 3500 exchange value, which is almost all of Ximen Qing's exchange value.

But Ximen Qing did not hesitate, and chose to exchange for this crucible steelmaking method.

After the exchange was successful, Ximenqing directly exchanged two technologies this time, which seemed to be of great effect.

Thinking of this, Ximen Qing was also quite excited.

Then Ximen Qing withdrew from the system space.

As for the manufacture of these Hongyi cannons.

There are also tool materials for the crucible steelmaking method, as well as the process steps of refining.

Ximenqing now only needs to draw their design drafts clearly and write down the precautions.

Ximen Qing can be handed over to other craftsmen to make.

There was no need for Ximen Qing to do it himself.

Because after Ximenqing built various functional areas such as blacksmith shop and so on in the fief.

Ximen Qing exchanged for various heroic souls with special skills.

So there is no need for Ximen Qing to do these things at all, just leave them to the people below.

After exiting the system space, Ximen Qing got up and went to his fief.

Ximen Qing, who just came to the fief, got another piece of good news.

It is the glass firing technology that Ximenqing has acquired a long time ago, and has successfully fired a batch of finished products.

After hearing the good news, Ximen Qing immediately smiled.

On the other hand, Ning Zhongze looked at Ximen Qing curiously.

"Officer, what is this glass? Why are you so happy?"

Because Pan Jinlian needs to manage the sales of sugar and distilled wine.

And Yue Lingshan wanted to help Ximen Qing look at the pharmacy.

So only Ning Zhong followed Ximen Qing's role after serving Ximen Qing to get up.

At this moment, although Ning Zhong and Ximen Qing do not have the name of husband and wife, in fact, they are already husband and wife.

Now Ning Zhong looks like Ximen Qing's wife, and the two are very close.

Of course, this intimacy was in the absence of Yue Lingshan.

After all, Ning Zhongze still hasn't figured out how to explain her relationship with Ximen Qing to Yue Lingshan.

"This glass is a good thing. As long as I do a little bit of tricks to sell it, even a glass product, I can sell it for a high price of 1000 taels of gold!" Ximen Qing said with a proud smile.

Originally, when Ximen Qing built the entire fief, he spent a lot of money.

Even Ximen Qing's rich family has consumed a large part of it.

In the case of financial difficulties, the successful firing of this glass is tantamount to giving Ximen Qing a huge way to make money.

And this Ningzhong didn't expect at all that Ximen Qing would say that this thing called glass could be sold for a high price of 1000 taels of gold.

So Ning Zhongze's curiosity was even more aroused. Is this glass some kind of rare treasure?

But shouldn't rare treasures be natural?For example, how can things like night pearls be manufactured?
Then Ning Zhongze, who was puzzled, followed Ximen Qing to a tightly guarded area.

Ximenqing was in the fief, and there were several tightly guarded areas, and a large number of soldiers were sent to guard them.

Because these are all related to Ximen Qing's core technologies of various monopoly nature!
Only a monopoly can exchange for greater economic value and have the greatest voice.

And this glass is even more so. The technical difficulty of glass manufacturing is not particularly high, and its materials are also very common.

So in this case, if the technology of glass manufacturing is leaked out.

Then glass is no longer a luxury that Ximenqing wants to create, but a very common street stall.

Although Ximenqing may release glass technology in the future, at least not now.