The geographical location of Dor City is very subtle.

This city originally belonged to the Frank Kingdom, located in the north of the Frank Kingdom, close to the border between the Frank Kingdom and the Marlow Empire.

Because the Frank Kingdom and the Marlow Empire are also divided by a mountain range, and the city of Dore is stuck at the exit of a valley with different numbers of digits in this mountain range, which can be regarded as controlling the throat position of this major transportation route connecting the Frank Kingdom and the Marlow Empire.

Before, the Frank Kingdom and the Marlow Empire had always had a good relationship and could be regarded as an alliance, so the city of Dore only served as a transportation hub.

Now with the demise of the Frank Kingdom, the land where Dor is located is divided into the name of the Duchy of Drake, Dor has transformed into a very prominent strategic position.

If the Marlow Empire wants to invade again, the city of Dore is impossible to ignore.

Therefore, Xu Yi cooperated with the Principal of Drake this time to build a complete urban defense system for the Principal of Drake. With this resistance to the invasion of the Marlow Empire, Dore became the first choice.

As Xu Yi said, the purpose of this system was first to provide the entire city with a complete magic protection system based on military magic machinery, which could easily resist the attacks of the Marlow Empire's army.

The ultimate goal is to complete defense tasks when the opponent even dispatches a magician, making Dor City become impure.

However, this system has a very serious problem, that is, the cost is too high.

If the city of Door, a not-so-large city, wants to fully arrange such a system, according to the budget made by the New Aircraft Chamber of Commerce, it will require a minimum investment of more than eight million gold coins.

Therefore, even if the Xinfei Chamber of Commerce takes action, it is impossible to arrange such a system for all the cities currently controlled by the Principality of Drak in one breath, and can only select the final few cities to be arranged.

Dor City is just one of them. In the future, this system will be arranged on several cities on the northern border of the Duchy of Drake, which will completely seal the route of the Malo Empire to the southward invasion of the Duchy of Drake.

For this reason, the estimated total investment amount of Drake's Principality is as high as 70 million gold coins.

Although the Principality of Drak has been vigorously developing the magic industry over the years and ensuring fiscal revenue, it has not been able to make such a huge investment.

So in accordance with the agreement between the two parties, the Principality of Drake will divide one-third of the various mineral resources on the newly acquired 170,000 square kilometers of land in the original Frank Kingdom and sell them to the New Aircraft Chamber of Commerce, and jointly develop them with the New Aircraft Chamber of Commerce in the remaining various mineral resources, which is regarded as payment.

Because the mineral resources involved in this agreement are too large, some disharmonious voices have even been heard in the Duke of Delal. It is claimed that Grand Duke Caroline is simply using the mineral resources he has finally obtained to please the New Aircraft Chamber of Commerce, and it can even be said to be a stolen country!

But from a practical perspective, with the current capabilities of the Principality of Drake, there is no way to effectively develop and utilize these mineral resources, but instead, it is left to the Xinfei Chamber of Commerce for cooperation to develop. It can be fully utilized.

The most important thing is that the Principality of Drak is simply inseparable from the New Air Chamber of Commerce.

If the New Air Chamber of Commerce had lost the support of the New Air Chamber of Commerce, the Principality of Drake would not have developed to this point, nor would it have been possible to confront a behemoth like the Marlow Empire.

So compared with the voices of doubt and opposition, Drake Duke still supports Grand Duke Caroline the most.

This time, the Duchy of Drake directly annexed a huge land of 170,000 square kilometers of the Frank Kingdom, which expanded the territory of the Duchy of Drake by nearly twenty times at once. It can be said that it completed the greatest achievements in the more than 300 years since the establishment of the Duchy of Drake, which was even unimaginable to the previous Duchy of Drake.

With such achievements, Grand Duke Caroline's prestige is naturally unquestionable.

For this reason, many nobles in the Duke of Drake have made voices. They hope that Grand Duke Caroline will be crowned as king directly, but they were rejected by Grand Duke Caroline.

"How come I don't understand what these guys are thinking?" Grand Duke Caroline showed a disdainful smile on his still gorgeous face. "They are just hoping that I will be crowned as queen and then re-enforcement. Humph, these guys are staring at this newly acquired land. These unknown guys must be thinking about obtaining a larger area of ​​territory now."

"This is normal. After all, it is a noble. Obtaining more territory is originally a tradition of aristocrats, and it also represents the glory of aristocrats." Xu Yi smiled.

"Tsk, even if I gave them a large area of ​​territory, do they have the ability to defend it?" The mockery on Grand Duke Caroline's face became more profound. "It's like you. Xu Yi, you still have an earl title in the Duke of Stantin, right? How much territory is under your name? Does it have any impact on you? Who will see if your territory is not big enough?"

"I have been emphasizing that my identity is a businessman, aristocrat or a magician. It's just a side note." Xu Yi shrugged and said with a relaxed look: "It doesn't make sense to compare the size of the territory with me. It's better to come and make more money than me every year."

"The money you make every year?" Grand Duke Caroline glanced up and down, narrowing his eyes slightly. "Xu Yi, can you tell me how much money you can make in a year with the Xinfei Chamber of Commerce?"

Xu Yi suddenly laughed: "This is not a shameful secret. You don't need to ask in this tone. Let me tell you the truth. Last year, our chamber of commerce made about 150 million gold coins a year."

"150 million gold coins!" Grand Duke Caroline suddenly took a breath. "God is here! I always knew that your chamber of commerce made a lot, but I never expected that I would make so much! The fiscal revenue of our principality throughout the year is less than 20 million gold coins!"

"That was when you were just a small principality. Now that you have obtained this large area of ​​territory. As long as you operate it well, I think your annual fiscal revenue can easily exceed us in the past few years." Xu Yi smiled. "In addition, I need to tell you one fact, that is, the income statements of our Chamber of Commerce at the end of this year will probably be very ugly."

"This is not surprising. After all, your New Flying Chamber of Commerce guards have also participated in the war directly this year. War is a very expensive thing. If the military magic machinery you produced has absolute combat power advantages, then if the war continues for a long time, whether it is our principality or your Chamber of Commerce, it will eventually be dragged down by the two huge empires of the Marlow Empire and the Candela Empire."

"You are right, so we can't delay. We must end this war in the shortest time." Xu Yi said seriously.

"How to do it?" Grand Duke Caroline frowned. "The Marlow Empire and the Kandra Empire have too deep foundations. They also have so many magicians in charge. When we face them, we can only be completely passive. It is entirely up to them to decide when the war will end."

"That's not necessarily. As long as they get hurt, let them know that continuing to maintain a state of war will only hurt them more deeply, and they will take the initiative to end the war." Xu Yi showed a dangerous smile. "First of all, what I need to tell them is that the magician is not so safe."

Grand Duke Caroline looked at Xu Yi in confusion.

During the past few years, Xu Yi has shown more than once that he is indifferent to the magician and even disdainful of him, which makes her very surprised.

Logically speaking, Xu Yi himself is already a magician, so he should know more than anyone else how terrible the magician's ability is.

Although the military magic machinery developed by the Xinfei Chamber of Commerce is also powerful, the most terrifying thing about the magician is that he is far more flexible than military magic machinery and is difficult to really limit.

Moreover, the magician is not very laborious to use the forbidden spell magic like a great magician. Once a magician is allowed to do it with all his strength, the destructive power caused is extremely terrifying.

If you just defend, you may still think of ways. But if you want to counterattack, it will be a headache to the powerful destructive power caused by the magician.

This is one of the main reasons why Caroline believes that although they easily defeated the regular army of the Candela Empire, the Maro Empire and other countries on the front battlefield, they still have an absolute disadvantage in the overall situation.

With the military magic machinery produced by the Xinfei Chamber of Commerce, they can easily withstand the attacks of the two empire camps, but they have basically no chance to counterattack.

Not to mention the magician, just by judging from the background of both sides, it is too far apart.

"Our best choice now should be to consolidate the current achievements, absorb them well, and then improve our own strength, so that we can have the capital to truly compete with the two empires. If we act rashly, I don't think it's a good choice..." Seeing the crazy meaning revealed in Xu Yi's words, Grand Duke Caroline couldn't help but persuade him.

"This is your choice as the lord of a country, it's true. But..." Xu Yi smiled and patted her on the shoulder. "Have you ever thought about a question? What is the reason why our side can easily defeat the two empires on the battlefield now?"

"Of course, it's up to the military magic machinery provided by your chamber of commerce, can there be anything else?" Grand Duke Caroline asked in wonder.

"It's true, but it's not completely accurate." Xu Yi shook his head gently. "In fact, in this battle with the two empires, we can find that the two empires have actually had some research on military magic machinery, and many military magic machinery have been put into actual use. And we can easily defeat them, relying on the current technical advantages of our Chamber of Commerce in military magic machinery. Have you ever thought about it? If the time goes by, what will happen if our Chamber of Commerce loses its technical advantages in this? "

Grand Duke Caroline's face changed slightly: "No way... the military magic machinery of your chamber of commerce is obviously much stronger than them, how could they catch up with them?"

"There is nothing impossible in this world. So we must take advantage of the fact that their technology in this area is still at an absolute disadvantage and gain enough benefits for ourselves."

"Are you planning..." Caroline looked at Xu Yi in surprise.

Xu Yi smiled and patted her on the shoulder: "Waiting for my good news." (To be continued.)
Chapter completed!