Karina also knows a lot about Cassine, which is actually the city she discovered, and the mobile fortress that she found in the city, so she doesn't need much to say about the city.

So when Rocky asked this, Karina also stood up and stood side by side with him in front of the sand table.

"It's too big, it's bigger than Foggy Mountain Castle. ”

Looking at Cassin City on the sand table, Karina remembered the scene of her previous trip to Cassin City, and then said a key problem, the city is too big.

What she said is also the truth, and it is the point.

Despite its remote location, Cassin City is a large city in the kingdom, and the area is even twice the size of Misty Mountain City, which will be a key question for Rocky to control Cassin City.

Because it can be seen from the battles of this counteroffensive war that it is not difficult to capture a city, and the real difficulty lies in how to defend a city after it is captured, which is the real difficulty.

Based on Karina's experience in this counteroffensive, the larger the city, the more difficult it is to defend, and the larger the city, the more hits need to be put into defense, which even the coalition forces will find unbearable, let alone Rocky.

The reason why the coalition forces were able to control three large areas in a row was not because there were enough troops and a large number of troops were stationed in each city for defense, but because the coalition forces were moving fast enough, and every time the coalition army captured an area, they would occupy all the cities in the area as quickly as possible, and then send a large army to carry out a large-scale carpet sweep of the entire area, sweeping away all the demons in the area, so that the defensive tasks of each city would be much lighter.

But Rocky obviously can't do this, with his ability, even with Karina, plus the Myront family, it is impossible to sweep in the area of Skybreaker Peak, and without this large-scale sweep, the number of demons in the area will not decrease, and even if Rocky occupies Cassin City, he will suffer endless attacks.

However, Cassin City is so large that Rocky simply does not have enough defenses to defend it, and the final result will be that even if he can capture the city, it will not be long before he will be repelled by the demons, no matter how many times this result is repeated.

In fact, this is also where Rocky is in a dilemma, since he wants to capture Cassin City, he has been to Kasin City more than once during this time, and he also found that Cassin City is indeed too big, if you want to defend such a city, you can't do it without tens of thousands of defensive troops, but even if he throws all his troops into it, even if he adds the strength of Karina and the Myront family, he can't make up tens of thousands of defensive troops.

"I have a way ......"

And just when Rocky was at a loss, Karina spoke.

I saw her frowning and staring at the sand table, staring for a while before continuing: "If the city is reduced a little, it may be able to hold it." ”

"You...... Say what?"

Hearing this, Rocky couldn't help but look at her, obviously not understanding what it meant.

Then Karina explained in detail: "If it is the current Cassin City, we will not be able to stand it no matter what, not only are there not enough people, but the original fortifications of the city have long been destroyed, and there is no way to defend it. ”

"But if we can make the city smaller, I mean, wouldn't it be easy to build an inner city inside the city and defend it through the inner city?"

"You mean...... A city within a city?"

"That's right!"

Nodding, Karina said that she meant that, and then Rocky frowned and thought for a long time.

The idea was indeed interesting, to rebuild the fortifications in Cassin to form a city within a city, so that the pressure on the defense would be much less, and since the fortifications were all newly built, the defense would not only be less stressful, but also more intense.

It's a good idea indeed!

After pondering for a moment, Rocky nodded, thinking that Karina's idea was very reliable, so he immediately called Lilia and asked Lilia to contact Master Winn, who had previously upgraded Thunderhawk City, and asked him to come to Thunderhawk City again.

As a master of Sky City upgrades, Wynn is also quite thorough in the study of city defenses, and he has made a lot of suggestions for the fortifications of Beishan Village at the beginning, so if you want to build a city within a city in Cassin City, he is the most suitable person.

After arranging these things, Rocky looked at Karina and asked, "Are you interested in renovating the Rose City?"

"Oh?"

As soon as she heard Rocky ask, Karina's eyes immediately lit up, she had already heard of the city's armed transformation carried out by Thunder Eagle City, and even knew that the transformed Thunder Eagle City had a fierce record of destroying six cities in a row outside the Nightless God City, so when Rocky asked this, she immediately nodded.

"You mean the City Armed Project, the one led by Master Orton?"

"Yes, if it were you, the teacher might be willing to help you transform Rose City. ”

"That's great!"

Knowing that Rocky is willing to carry out an urban armed transformation of his Rose City, Karina is of course a hundred willing.

"But you'll have to pay for it. ”

"Of course, no problem, no problem at all. ”

Nodding without hesitation, Karina didn't care about the cost at all, you must know that since Rocky killed six cities in a row outside the Nightless God City, how many people wanted to know why Thunder Eagle City had such a powerful combat power, and later figured out that the city arming plan proposed by Orton in the early years was successful, so countless people wanted to inquire about the ins and outs of this plan, and wanted to modify their own cities, but none of them succeeded, even the Magic Energy Research Institute.

In fact, the most depressed thing about this matter is the Magic Energy Research Institute, because Orton carried out this project with the support of the Research Institute, but unfortunately it failed, but after seeing the power of Thunder Eagle City, when the Research Institute found out all the previous research materials, it was found that no matter how it was verified, it was still a failure, and then people realized that the success of the city armed plan was entirely because of the use of rune technology, so they outsiders should not think about it, and the same is true for Karina.

Although she has a very good relationship with Rocky, she also knows that this technology must be Rocky's most important secret, so she has never tried to inquire in vain, for fear of ruining the relationship between herself and Rocky, she believes that once Rocky is willing to share these technologies, then she will definitely get them first.

But the truth was even better than she expected, and Rocky didn't plan to share the technology right away, but since Karina was willing to give up the coalition to help him, he wouldn't treat his own people badly.