After the Golden Skull King walked out of the Sea of Skulls, in just a few days, the vast territory near the Sea of Skulls was all under the rule of Nicholas. More than a dozen lord-level existences, all of them joined the Golden Skeletron's camp just like Locke.

After devouring the soul fire of the first fourth-level undead creature, Locke stopped continuing his research on necromantic magic.

For Locke, it is better to study necromancy now than to wait until his strength level is increased and his mental power is stronger, because then he can save more time.

Immediately, Locke put all his mind on finding the mid-level undead creatures.

In Locke's soul perception, there were already third-level undead creatures everywhere near the Sea of Skulls.

Focusing all his energy on hunting, Locke's speed was naturally extremely fast, and in one day, Locke crossed a considerable distance. Finally, on the second day, another being of the same level was discovered by Locke and devoured the soul fire.

In the following time, Locke would be able to find a fourth-level undead to grow and devour for as little as one day, or two or three days at most.

Moreover, as time went on, the chances of Locke encountering a fourth-level undead creature also increased.

After more than ten days, Locke knew that it was not far from being promoted to a fifth-level undead creature. Because on this day, Locke had sensed that the fire of his soul was showing signs of imminent promotion.

In the past ten days, Locke has killed more than twenty fourth-level undead creatures, from the beginning of the whole day not necessarily being able to find a single intermediate undead creature, to now in one day, it is enough to meet several existences of the same level, and the number of mid-level undead creatures near this sea of skulls is also increasing dramatically.

Because, every day you wait, there will be a large number of low-level undead creatures who are in the bottleneck of promotion to advance to intermediate level.

And the number of undead creatures in the vicinity has not decreased due to frequent killings, but is still slowly increasing.

In the Sea of Skulls, a huge number of undead creatures emerge from the light curtain every moment to meet new challenges.

The concept of hierarchy between undead creatures is very strict, and unless there are some special circumstances, there will be no undead creatures of different levels fighting each other at all. There will be no higher-level undead creatures wantonly killing lower-level beings.

The number of undead creatures of different levels is pyramid-like in a certain proportion, and the slow increase in numbers comes from the appearance of higher pyramids. In the absence of a large number of high-level undead creatures, the birth of higher-level undead creatures will not affect the lower-level undead creatures.

Suddenly, another mid-level undead creature appeared near Locke. Because it was still outside the range of Locke's soul perception, all Locke did not perceive the existence of the other party, and still continued to look for a target.

This mid-level undead creature is also a skeleton creature, and when it senses Locke's level, it doesn't pay attention to Locke, and continues to move forward casually.

"Well, fifth-level skeleton creatures. Before he knew it, the skeletal creature appeared in Locke's mental perception.

After sensing that this was actually a fifth-level undead creature, Locke was overjoyed, and this was also the first fifth-level undead creature that Locke had encountered during this period of time. Locke himself was on the verge of advancement, devouring the soul fire of a fifth-level undead creature, and he would definitely advance immediately.

In an instant, Locke was about thirty degrees away and rushed after him.

At this time, Locke had already surpassed the ordinary fifth-level undead creature in terms of speed, and in a blink of an eye, he was in front of this fifth-level undead creature.

Locke's actions naturally did not conceal this fifth-level skeleton creature. However, it does not consider an undead creature of a lower rank than itself to be a threat to itself. Although the soul fire of the fourth-level undead creature no longer works on him, if the other party offends him, he doesn't mind taking advantage of the situation to solve Locke.

The skeletal creature was oblivious to the fact that it had become Locke's prey.

This skeleton creature can become a relatively rare fifth-level undead creature near the Skull Sea, and naturally it also has some origins, it is a servant creature of one of the lord-level existences that went to the skeleton, so after signing the contract, it can quickly be promoted to two levels and become a fifth-level undead creature.

Seeing that Locke was indeed coming at him, the skeleton creature immediately planned to teach the blind skeleton warrior in front of him a lesson, let him know his majesty, and then kill him.

As soon as the skeleton creature came into contact with Locke, he realized that he was thinking too much.

Unexpectedly, the situation of easily crushing the other party did not appear. On the contrary, as soon as he made contact, he was carelessly cut off several bones by a row of bone spurs on Locke's arm.

Realizing that Locke was not as weak as he thought, the skeleton creature immediately planned to deal with Locke's attack seriously.

As soon as they collided, Locke raised his hand again and attacked him. This is Locke's first fifth-level undead creature to fight, although Locke knows that he already has the combat power of a sixth-level undead creature, but he does not mean to despise the other party in the slightest, but he intends to solve the other party quickly.

The skeleton creature, faced with another blow from Locke, immediately raised its claws and prepared to block Locke's blow.

"Bang. Under the block, although the skeleton creature blocked Locke's attack, the arm bone was also broken by blocking Locke's blow.

This head-on collision also made this fifth-level undead creature understand that his first defeat was not because of his carelessness, but because the opponent's strength was originally stronger than his own.

In an instant, this fifth-level undead creature was clear, although the opponent's strength level was lower than his own, his real combat power was stronger than his own, and he did not seek death when he shot at himself, but regarded himself as a prey.

Locke's attack was blocked by him, and it didn't surprise Locke. The other party has not lost the ability to act, and has not been weak in combat instinct and wisdom, so he naturally knows how to resist.

Raise his other bony claw and slash at the arm bone of its spirit. This time, although the opponent sensed Locke's attack, he was hit by Locke's blow before he could block it.

"Click. A chunk of the skeleton creature's stout skeleton snapped in response.

Wounded by an undead creature of a lower rank than himself, the skeletal creature was not ashamed, and the thought of escaping came to his mind for the first time. Since its birth, this undead creature has killed nearly a hundred undead creatures along the way, and every time it encounters an existence of the same level, it has no idea of fleeing without a fight.

Low-level undead creatures, because of their instincts, encounter and kill with their peers, and they can only kill each other or be killed by the other party, and basically there is no situation of fleeing without a fight.

However, now this undead creature is already a fifth-level undead creature, or a contract creature, and its wisdom is far from being comparable to its low-level being, so after discovering that the skeleton warrior in front of him is stronger than himself, he will immediately think of escaping.

"I want to run. Locke was also not surprised to see the other party running away, because if he were himself, he must have run faster and crisper than the other party. However, this skeleton creature has no advantage in terms of strength or speed, and it is only wishful thinking to escape from Locke's hands.

With a movement of his mind, a retardation technique was thrown by Locke. The dual consumption of mental power and mana in the body shows that this necromancy prepared by Locke did not fail.

"Well, it didn't work. "The skeletal creature didn't run any way because of the sluggishness that Locke toss, not even a slight pause. It can be seen how useless this curse-type necromancy is in battles between undead creatures.

For the ineffective retardation technique, Locke had already prepared, and he threw a retardation technique, just to test it.

Although the skeleton creature fled as soon as possible, the result remained unchanged, and it was doomed to fall when it met Locke.

In less than ten minutes, the skeleton creature's skeleton was violently dismantled by Locke.

Picking up the head of this skeleton creature, Locke just sucked it easily, and the soul fire of a fifth-level undead creature merged into Locke's soul fire. With the integration of the soul fire, Locke's soul fire began to surge violently, and the familiar feeling appeared again, and Locke knew that he had advanced.