Locke devoured the soul fire of three existences of the same level in a row, and his own soul fire naturally increased a lot. Although Locke's spiritual power was close to exhaustion at this time, Locke knew that once his spiritual power was fully recovered, he would definitely be able to go further. If he summoned a fifth-level undead creature, Locke believed that after his improved spiritual power, he would be able to summon one or two more times.

The three undead creatures that Locke summoned in a row were just ordinary skeleton creatures, and under Locke's preparations, none of the three skeleton creatures escaped Locke's attack, and all of them were beaten by Locke within two moves and lost their ability to resist, and Locke easily devoured the soul fire.

Resolving the battle in an instant also allowed these summoned undead creatures to have no chance to cause any damage to Locke's room, and they didn't even make much of a fight. After the three skeleton creatures were killed by Locke, the only thing left was the skeleton frame after the body was defeated.

If it was before, Locke didn't care about these skeleton shelves that existed at the same level, even if these skeleton shelves were refined into bone essence, they would not be able to improve their strength. But now, Locke also attaches importance to these relatively fragile bones, because the dead air contained in them is what Locke needs.

If Locke wants to restore the undead magic consumed in his body, what he needs most is naturally a rich death qi. Although the amount of dead air in the bones is not much, and even less can be absorbed by Locke, but the accumulation of a large number of bones and corpses can also create an environment full of dead qi for Locke, so that Locke can absorb the dead qi and restore the undead magic consumed in his body.

As soon as Locke's mind moved, the stone tablet located in the skull that had been calcined by the soul fire appeared in front of Locke, and the bones on the ground disappeared in an instant, piled up in the space of the stone tablet altar.

Putting away these bones, Locke was about to put away the stele again to meditate to restore his mental power, and his mind inadvertently swept over the altar space, but there was a flash of inspiration in his mind, and he had a new idea.

Locke summoned three fifth-level undead creatures, and the spiritual power in the soul fire was nearly exhausted, but there was still most of the magic power in his body. Of course, even so, if Locke wants to recover these magic powers, he needs to use the alchemy potion he has placed in the magic bag.

Although Locke has stored some bones and corpses, it is difficult for Locke to release much undead qi for Locke to absorb, and most of the dead qi released by these skeleton corpses will escape into the air and be wasted.

Locke's mind penetrated into the altar space, and found that after just a few days, the corpses he placed in the altar space were still the same, not much had changed, but the skeleton shelves taken from the undead creatures had begun to slowly release the dead qi stored in the bones.

In the altar space, there was still some dead air at this time. Although the concentration was far less exaggerated than in the undead plane, Locke could feel a lot more dead than in the space around him.

Originally, Locke used the altar to collect bones, and he also planned to wait until the number of bones was sufficient, and then put them in a relatively closed and secret place, so that these bones could release dead qi, enough to absorb them by themselves, and refine the alchemy potion of the undead.

However, at this time, Locke unexpectedly discovered that the bones in the altar space had released dead qi in the space, and naturally he had a new idea.

Locke wanted to see if he could enter the altar space, if he could enter it, not only would he be much safer and more secure, but it would also bring great convenience to him to absorb the magic of the undead.

In the altar space, there is no air that normal living people need. However, Locke didn't care about this, and Locke believed that he could still do it by using the stele and filling it with some gas. What's more, Locke is essentially an undead creature, and although he has flesh and blood and can breathe, Locke can also control himself to stop breathing.

As the thought flashed, a passage instantly appeared in front of Locke. This is not the same as Locke's usual collection of items, Locke wants to collect those items, and just by thinking about them, the items will instantly appear in the altar space. At this time, Locke wanted to enter the altar space himself, but found that an unknown passage appeared in front of him.

The moment the passage appeared, Locke felt that his little remaining spiritual power began to be consumed again, although it was not as consumed in an instant as when summoning undead creatures, but this consumption was endless. If it weren't for it, Locke devoured the soul fire of an undead creature and replenished some of his spiritual power, and Locke's spiritual power would not even be able to maintain this small passage.

Locke did not venture into the passage, but moved his mind and probed his mental power into it, which was close to exhaustion. After all, once the other end of the passage is an unknown place, Locke may not be able to return to it once he steps in.

"Sure enough, it's the altar space. The passage wasn't long, and at the other end of the passage, Locke sensed the bones piled up in the altar space.

After knowing that the other end of the passage was in the altar space, Locke also let go of the scruples in his heart, and jumped into the cylindrical passage of the passage with a diameter of no more than half a meter.

As soon as Locke stepped into the altar space, the passage was gone. Of course, the passage did not disappear on its own, but disappeared under Locke's control, because there was no passage, and Locke's spiritual power needed to be consumed at all times, and Locke's own spiritual power was close to exhaustion.

After Locke disappeared, there was only a stone tablet more than two meters high left in the room.

In the altar space, Locke can easily sense the dead qi that exists around his body, although it is very thin, but since Locke can sense the existence of dead air, it means that Locke can absorb the dead qi from the environment where the thin dead air exists.

Although Locke could sense the existence of dead air, Locke's spiritual power had been depleted, and it was not suitable to absorb the thin dead qi in it.

Now that he has proved that he can enter the altar space and recover the magic power he consumed, Locke is naturally not in a hurry.

At present, Locke's first priority is to recover his depleted spiritual power, at least to the point where he can allow Locke to open the altar space passage again and leave the altar space.

Locke Zhilu said that when he entered the altar space, it was already the second half of the night, and it was not far from dawn.

Then, Locke began to meditate directly in the altar space.

Worried that he had been meditating for too long, Locke did not meditate deeply, but only planned to recover a little mental energy in the shortest possible time and be able to return to the room.

Time flickered, and an hour passed, and although Locke's spiritual power was still far from being fully recovered, it was nearly one-tenth, which was enough for Locke to open the altar space passage again.

Under Locke's control, the passage was opened again, this time within the altar space.

Without the slightest delay, Locke appeared outside the stele through the passage, and this time Locke only consumed a small amount of spiritual power.

After leaving the altar space, the huge stone tablet was also included in the soul fire by Locke's idea.

His mental strength was exhausted, and although Locke had gained a lot, he also felt quite tired.

After arriving on the couch, Locke completely entered deep meditation.

In deep meditation, Locke's perception of the outside world is also minimized, but once danger comes, Locke can still wake up from deep meditation in an instant.

As Locke meditated, his spiritual power continued to recover. In the process of recovering the spiritual power, a small amount of impurities in it were also eliminated due to meditation, making Locke's spiritual power more pure and condensed.

Undead creatures can improve their strength with the help of the soul fire that devours their kind, and the soul fire will naturally have impurities. After devouring the soul fire, meditating is more conducive to the undead creatures, purifying their soul fire, condensing their spiritual power, and thus laying a solid foundation.

As an undead creature, Locke naturally knows all about these common senses.