Karen is quite satisfied with the success of her consumption in the territory store this time, if it weren't for the fact that the territory upgrade requires 500 million territory energy, Karen may spend some territory energy to draw lottery.

[Ding, you consume 1 million territorial energy and buy 10 [Skeleton's Crossbow Arrows]!] 】

[Ding, you consume 1 million territory energy and buy 10 [Undead Blacksmith Workshop]!] 】

[Ding, you consume 1 million territorial energy and buy 10 [Undead Tailor Studios]!] 】

[Ding, you consume 1 million territorial energy and buy 1,000 [Blood Saplings]! 】

[Ding, you consume 1 million territory energy, buy 10 [Undead Skill Scrolls]

With a wave of his hand, Karen once again threw 5 million territory energy, and after buying a batch of materials, she stopped the consumption of the territory store this time, and asked Geyi to distribute the batch of materials he bought, and Karen officially began to retreat and cultivate to improve her strength.

It's just that as soon as Karen retreated, he immediately discovered a rather embarrassing thing, that is, he suddenly found that he didn't seem to have a way to improve his strength.

If Karen is still a human, it is very simple for him to improve his strength, and now that he controls the entire Bourbon Kingdom, he can have as many methods of human cultivation as he wants, but the worst thing is that Karen is no longer human.

As an undead, he can't use human cultivation to improve himself at all, which makes Karen somewhat blind, and she tosses in the Tower of Bones for a long time, and Karen finally tosses three ways.

One is to integrate the way of human cultivation and create a set of methods suitable for the cultivation of the undead.

One is to consume the energy of the territory and gamble on your luck in the [Territory Store] to see if you can draw a method suitable for the cultivation of the undead.

Both of these methods are somewhat unreliable, with the former taking too long and the latter requiring luck and territorial energy.

Karen thought it over for herself, but finally gave up on both options.

And after giving up these two methods, Karen can only improve her strength at this time, and that is to use the book of death that Caesar gave him before, which contains the inheritance of the necromancer.

This is the only sure means that Karen currently has in her hands that can be used to cultivate and improve herself.

In the absence of a choice, Karen found the Book of Death from the space ring, and prepared to come to a demonic dual cultivation to improve her strength.

It's just that Karen never thought that the book of death was surprisingly similar to him.

Karen picked up the book at this time, and the spiritual power had just poured into the book, and before she could guide it, a huge amount of information began to pour into Karen's head, and suddenly Karen fell into the ocean of magical knowledge.

And Karen's state doesn't last an hour or two, or a day or two.

From the moment he began to accept the information in the Book of Death, Karen had been in this state, and she did not wake up for most of the month.

In fact, Caesar didn't have any kind intentions when he gave Karen this book of death.

If Karen was curious at that time and really got his hands on the Book of Death, then Karen would be in the current state, which would be extremely fatal for Karen at that time, and a bad Karen might be killed directly at that time.

Fortunately, a series of events happened later that left Karen with no time to study the Book of the Dead, which saved Karen from a difficult situation.

Even after Karen took the Kingdom of Bourbon, she was made a hit by this 'Book of Death'.

It can be seen that Karen's strength is constantly improving in this state, and if nothing else, when Karen wakes up again, his strength should be able to meet the conditions for territorial upgrades.

Karen was immersed in the ocean of magical knowledge on the other side, and on the other hand, Karen's territory and the Bourbon kingdom did not stand still because of Karen's retreat, and even began to develop rapidly.

The development and changes on Karen's territory are mainly in two aspects, one is the undead army under Karen's command, and the other is the various undead technical talents under Karen's command.

In both aspects, Karen has made arrangements, and the development of the undead legion mainly relies on the level 6 [Tower of Bones].

Geyi will arrange a group of first-order undead to enter the Tower of Bones every day, and the Level 6 Tower of Bones can provide 12,000 experience a day, which is enough for a first-order undead to be directly promoted to the third order.

The level 6 Tower of Bones can hold 120 undead at a time, and in addition to Karen herself, some of his henchmen and undead with special talents, the Tower of Bones can also have 100 slots free.

In other words, in Karen's territory, 100 third-order undead can be born in a day!

This method of mass-producing third-order undead is simply terrifying, as long as Karen is given a year, he can create a third-order undead army of close to forty thousand.

Such an undead legion, even a seventh-order powerhouse can resist or even crush it.

Don't look at the five undead of Caesar before, fighting an army of 250,000 is as easy as beating 250,000 dogs, oh no, it should be said that it is as easy as beating 250,000 dogs.

In addition to the fact that the strength of Ika's army is not good, more than 90% of the 250,000 are first-order, it is more because their morale is not good, and they will collapse directly if they are casually beaten, and if they change the 250,000 undead, the result will be completely different.

The undead are not afraid at all, as long as there is an order from Karen, they will charge with their lives, and in the face of such an army of undead, even if it is five seventh-order powerhouses or even several times more seventh-order powerhouses, they can't bear the front!

Of course, under normal circumstances, there would definitely not be a seventh-order powerhouse so stupid to face hundreds of thousands of undead, they have a way to defeat hundreds of thousands of first-order undead armies in a roundabout way, but if it is replaced by tens of thousands of third-order undead armies, it is not so easy.

As long as it is arranged properly, tens of thousands of third-order undead legions can leave a few or even more seventh-order powerhouses behind.

And war is never so simple as fighting between the enemy and us, tens of thousands of undead armies may not be able to deal with a few seventh-order powerhouses, but if you kill into the rear of the enemy, the blow that can be inflicted on the other party is definitely not as simple as killing a few seventh-order powerhouses.

It can be said that the tactic of the Sea of the Undead cannot be outdated no matter when it is.

This is also the reason why Karen is obviously in sight of her seventh order, and she is constantly working hard to cultivate the army of the undead!