The upgrade of the system is finally complete.

After getting the reminder message from the system, Jiang Chuan blocked the left and right and let Bai Mu guard at the door.

No one is allowed to enter without his permission.

One of the questions Jiang Chuan is most concerned about now is whether the musket after the system upgrade can be compared with the breech-loading rifled gun in his hand.

As a result, after listening to Jiang Chuan's question, the system gave him a disapproving answer:

"Your Excellency, have you not had faith in this system for more than a year? The system must be a high-quality product. This musket may be sharp in the eyes of ordinary people, but in the eyes of this system, it is nothing more than that, so there is no need to worry about it."

Jiang Chuan didn't expect that after the system upgrade was completed, he would become despised.

He believed that if the system had an expression, it would definitely give himself a big roll of the eyes at this time.

But Jiang Chuan doesn't have time to worry about these things now. It was the system's words that gave him a strong expectation of the musket that was about to be upgraded.

With a move of his mind, Jiang Chuan had already appeared in the system base.

The Grand Butler of the Lord's Mansion was already waiting on the sidelines.

Jiang Chuan couldn't wait to tell him to find a suitable vacant land and build an arsenal by himself.

According to the system, a complete upgrade of technology can only be carried out in the arsenal after the construction of the arsenal.

The chief butler quickly led Jiang Chuan to find a vacant land, which was near the barracks outside the city, which was very suitable.

Jiang Chun immediately ordered the construction of an arsenal.

Soon a virtual light and shadow appeared out of thin air in the selected clearing, and over time, slowly became solidified, and finally became a majestic three-story building.

After the building was completely solidified, Egawa found the name of the arsenal on his management menu.

He clicked in and found that there were a dozen or so technology upgrades to choose from.

Jiang Chuan took a general look, these technical upgrades not only include the range of muskets, ammunition, bayonets, accuracy, etc., but also include the technical upgrades of all aspects of artillery, and even include the weapon development of a new cavalry unit, Dragoon.

The so-called dragoon Jiang Chuan also knew that this was nothing more than mounted infantry armed with muskets. The muskets they usually use are shorter than those of ordinary musketeers, and are better suited for fighting on horses.

Jiang Chuan roughly calculated that the total cost of upgrading these more than a dozen technologies was about 50,000 taels of gold, as well as about 10,000 units of wood and asphalt.

And Jiang Chuan calculated the existing resources at hand, which can basically meet the needs of these upgrades.

So he did not hesitate to choose a comprehensive upgrade and upgrade these more than a dozen technologies at one time.

It will take about two days in total for these technologies to be upgraded.

Once upgraded, new muskets and cannons will be made in the Gun Foundry.

In the process of upgrading the technology of the arsenal, Jiang Chuan also took the opportunity to check the changes in various other fields.

After the upgrade, he was surprised to find that this upgrade was really a revolutionary upgrade.

For the entire base, the productivity and technology level will be multiplied.

For example, in the economic field, in the past, all the income of the Gangcheon base basically came from the trade of raw materials and the sale of these agricultural products.

And after this upgrade, a new economic unit plantation appeared.

The main crops grown in this economic plantation include natural rubber, coffee, cocoa, cane sugar, and tea.

The value of these cash crops has increased several times compared to the trade of primary agricultural products and raw materials, so that they can provide a steady stream of income for the base, so that the income rate of the base has increased several times.

After inquiring with the chief steward, Egawa learned that a plantation would generate about 100,000 taels of silver per month, which made Egawa very excited, so he ordered ten economic plantations to be cultivated on the wasteland outside the city.

Among them, there is a natural rubber plantation, a coffee plantation, a cocoa plantation, a sugar plantation, and three tea plantations.

The reason for this arrangement is that natural rubber has a high value and is extremely widely used. And tea is a drinking necessity in Daming, so naturally there are more.

There is no need to worry about the lack of sales for the crops produced by these plantations, as some of them will be used for industrial production and weapon making.

Even as the system continues to be upgraded, these crops will become more and more widely used.

Among these economic plantations, except for natural rubber, which has a wide range of uses in various fields such as industry and civil use, the others are basically beverage crops used for recreation.

In addition to tea, which can find a market in Daming, others include cocoa and coffee, which basically have no market in Daming.

After all, no one in Daming today will know these things.

Maybe the taste will slowly change in the future, but there is definitely no market at the moment.

Of course, the most direct way is for Jiang Chuan to choose to sell these crops directly in the market.

To put it simply, it is possible to do business with the system.

Of course, he can also choose to exchange these things for them in the real world using the system's two-way exchange channel, provided that he finds a buyer.

In this way, ten plantations, for Jiang Chuan, according to the income of one plantation of 100,000 taels per month, then he has an income of 1 million taels of silver per month.

Although this income cannot be said to be very generous, it is also a very important input for Jiangchuan.

In addition, there are several new units in the economy, such as mints and banks.

After asking the big housekeeper, Jiang Chuan learned that this mint can not only mint silver coins, gold coins, copper coins that are now popular in the world, and even include gold ingots, silver ingots, copper coins, etc., which are now popular in the Ming Dynasty, and even make banknotes with preliminary anti-counterfeiting functions.

This made Jiang Chuan more overjoyed than surprised.

If there is paper money, it will play a huge role in the development of economic circulation.

In the future, gold and silver will be used as financial reserves and as a basis for the issuance of banknotes, and will slowly withdraw from the circulation market.

Of course, if you want to issue banknotes, you have to have a bank, and it is impossible to do this without a bank.

Therefore, the new banks not only have all the functions of traditional banks, but also include new business functions, such as check exchange and banknote issuance.

Of course, this is talking about central banks. For the private sector, the most contact is, of course, with commercial banks. Commercial banks, on the other hand, mainly use the basic means of absorbing deposits, issuing loans, and taking advantage of the difference between the interest rates of deposits and loans to earn profits.

Of course, as for the profit model of issuing credit cards, that is only available to modern banks, and the function of early commercial banks is what is mentioned above.

The bank that appears in the current system is a bank that integrates the functions of the central bank and commercial banks.

Although Jiang Chuan knew the importance of banks, he also thought about recoining a unified currency, and even discovered paper money and implemented a banking system. But the current situation does not seem to take care of these things.

So after thinking about it for a while, I plan to think about it later.

This is a new change in the economic sphere. As for the industrial field, there are more than a dozen types of factories such as textile mills, quilt factories, and steel mills.