When these undead creatures besiege Locke, they need to risk being killed by Locke, as long as they are careless and Locke seizes the opportunity, they will lose their resistance under Locke's series of calculated attacks, and be slashed and devoured by Locke.

Although Locke was surrounded by dozens of third-level undead creatures, as long as Locke was willing, with his powerful bone frame and a little faster speed than these third-level undead creatures, Locke could easily break out of the encirclement of these undead creatures.

However, Locke has no intention of getting rid of the siege of these third-level undead creatures, for Locke, these third-level undead creatures besieging him can be regarded as food for his own promotion to improve his strength, with the help of the soul fire of these third-level undead creatures, Locke is sure that he will directly advance to the fourth-level intermediate mage skeleton.

After devouring dozens of third-level soul fires, a restlessness that was about to advance once again appeared in Locke's soul.

In this case, Locke also used the help of constantly casting the undead attack magic bone spear shot instead of meditation to calm the restlessness of the soul fire that was about to be promoted.

Another few minutes passed, and Locke, who had devoured the soul fire of more than thirty third-level undead creatures, finally reached the edge of promotion.

When another soul fire was devoured by Locke, Locke's soul fire finally began to transform irrepressibly.

The fluctuation of Locke's promotion to the fourth-level undead creature also transmitted a greater distance, making the undead creatures within a radius of hundreds of meters in the vicinity know that another mid-level undead creature was born on the battlefield of the Dao Dao.

"I'm continuing to waste my time. Seeing that there were still twenty or so third-level undead creatures left around him, he took the initiative to retreat from the encirclement of Locke, and Locke secretly said in his heart.

Although the intelligence of the third-level undead creatures is not high, after Locke killed dozens of his companions on his side, coupled with Locke's promotion to become a middle-level undead creature, Locke's powerful combat power deterrence, and the natural suppression between the middle and low levels, made these low-level undead creatures finally give up the siege of Locke because of instinctive fear.

Seeing that these third-level undead creatures took the initiative to retreat, Locke did not continue to pursue and kill these low-level undead creatures.

Because of the promotion to become an intermediate skeleton mage, the soul fire of low-level undead creatures can no longer enhance Locke's soul fire, and the soul fire of third-level undead creatures may only be used to replenish the mental power consumed by Locke when he casts undead magic.

Soul perception radiated, and Locke could easily perceive situations within a hundred meters of his body.

In Locke's soul perception, there were hundreds of third-level undead creatures and more than a dozen mid-level undead creatures.

These third-level undead creatures are basically the undead creatures on the zombie side, and only a small half of the more than a dozen mid-level undead creatures are undead creatures on the Locke side.

Obviously, on the battlefield, except for Locke and a few sixth-level undead creatures, the contract servants on the side of the Bone Dragon Lord were at a one-sided disadvantage. Basically, all of the second-level undead creatures were slaughtered within tens of minutes of the engagement.

Moreover, the undead creatures above the third level on the side of the Bone Dragon Lord were also besieged and killed in large numbers, and they were in a precarious situation.

Even several sixth-level undead creatures on the Bone Dragon Lord's side were also entangled by the sixth-level undead creatures on the hostile side, and there was no way to get out at all.

At this time, the number of undead creatures on both sides of the war combined was less than a thousand. It can be said that after a big battle, more than a thousand undead creatures have fallen on both sides.

The second-level undead creatures on the Bone Dragon Lord's side were almost completely lost. There were only two hundred of the more than 1,000 undead creatures still alive at this time, and almost more than four-fifths of them had fallen.

More than half of the undead creatures on the zombie lord's side have also fallen, but at this time, there are already more than five hundred undead creatures.

In the ensuing battle, the contract servants on the zombie lord's side had an absolute advantage, both in terms of numbers and individual strength. Although the surviving undead creatures on both sides of the war are relatively powerful, in the next battle, the undead creatures on Locke's side will inevitably lose more.

At the very beginning of the big melee, the sixth-level undead creatures on Locke's side seized the opportunity and killed dozens of mid-level undead creatures in just over ten minutes.

However, even so, the number of mid-level undead creatures on the Zombie Lord's side is already higher than that of the Bone Dragon Lord's.

Moreover, in the ensuing battle, the zombie lord's side continued to have sixth-level contract minions rushing to join the existence of the same level against Locke's side.

These sixth-level undead creatures who rushed from the battlefield of lord-level existence were all undead creatures who were hit by the bone dragon lord in the great battle.

However, these sixth-level undead creatures, although they were injured in the battle with the Bone Dragon Lord, their own strength did not drop much, and they were completely able to confront them head-on in the face of existences of the same level.

After several sixth-level undead creatures on Locke's side were dragged down, the enemy's lower-level, medium- and low-level undead creatures also began to quickly kill the middle- and low-level undead creatures on Locke's side by virtue of their strength and numerical superiority.

It is precisely because of this that there are only two hundred undead creatures left on Locke's side at this time.

Although the intelligence of the middle and low-level undead creatures is not too high, they also know that with the advantage of their level, they give priority to killing those second-level undead creatures that are one level lower. After killing all the second-level undead creatures on Locke's side, these third-level undead creatures continued to surround and kill the third-level undead creatures on Locke's side together with their numerical superiority.

There were even some extra third-level undead creatures besieging the fourth-level undead creatures on Locke's side under the orders of the fourth-level undead creatures on their own side.

At this time, on the battlefield, the ratio of undead creatures killed on both sides was more than one to two, and this ratio was still increasing. Over time, the ratio of the two sides will rise to 1 to 3, 1 to 4, or even higher, after all, the difference in strength between the two sides of the fierce battle will continue to widen.

Locke was promoted to a fourth-level undead creature, and his own combat power naturally increased a little again.

Before he was promoted, Locke's overall combat power was stronger than that of most fourth-level undead creatures. After being promoted to the fourth-level undead creatures, although Locke's physical strength has not increased again, his speed and dexterity have improved a lot, surpassing the ordinary fourth-level undead creatures, especially in terms of dexterity, which has reached the level of a fifth-level skeleton warrior.

In this way, Locke's overall combat power has approached or even reached the level of a fifth-level undead creature.

In the soul perception, on the battlefield, there are piles of bones everywhere, there are more than 1,500 bones of fallen undead creatures, and the number is naturally quite large, especially among these undead creatures, there are some larger ones, and the number of bones left behind after the fall is also more.

Locke Zhilu said, among these piled bones, there must be a small number of bones of fifth-level undead creatures.

After the end of the Great War, the bones of these fifth-level undead creatures will definitely be able to further their strength. Of course, the premise is that you can survive until the end of the war.

Because of the relationship between the servant contract, the contract servants of the Bone Dragon Lord such as Locke did not get the orders of the Bone Dragon Lord, even if they were defeated, they could not choose to flee the battlefield.

Violating the rules of the servant contract will result in a ninety percent chance of falling directly, and another ten percent likely to be a drop in strength level, and being easily killed by the undead creatures on the zombie lord's side devouring the soul fire.

Promoted to the fourth-level undead creatures, Locke devoured the soul fire of more than thirty third-level undead creatures. And by analogy, if Locke wants to advance to the rank of a fifth-level undead creature, the soul fire of the fourth-level undead creature that he devours must also need more than thirty.

As for the advancement of the soul fire that devoured the fifth-level undead creatures, Locke had not considered it for the time being. Although Locke had the strength to kill higher-level undead creatures at a lower level when he was at a low level, it was also because Locke had such strength by virtue of the strength of his body bones.

At this time, after being promoted to the intermediate undead creature, Locke's body bones have not been strengthened in any way, and the accumulation at the low level has been fully digested by Locke, so that Locke at this time is not sure to jump over the level to kill the fifth-level undead creature.