Yun Lan returned to the place where they had fought the iron-eating spider in the first place, and it had become unrecognizable.

Judging from the things they left for her, all the materials that could be used have been collected, and not even those little spiders have been spared.

However, it is also normal, the fourth-order demon beast is full of treasures for Jindan stage monks.

Spider crows, carapaces, and spider silk can be used to refine magic weapons; Inner pills and poison sacs can be used for alchemy and medicine; The blood, the tough epidermis on the stomach can be used to make talismans; If you don't dislike it, eat its flesh, and your cultivation can also grow.

But Yun Lan didn't come to pick up the leaks, her target was the Iron-Eating Spider's companion mine, the Sound Stone.

This is an extremely rare material, and since he has decided to stay and explore this relic mansion, Yun Lan will naturally not let go of this rare material.

It's true that she won't need it now, but no one can guarantee that she won't need it in the future, so it's better to collect some and keep them for later use.

With the appearance of the exit of the Immortal Relic Mansion, many monks who were injured in the Relic Mansion rushed to this side, and Yun Lan met several waves along the way, and even a few people he saw when he broke the formation before.

After them, a lot of people did come in.

These monks did not doubt the authenticity of the exit, because the exit and the entrance looked exactly the same, just like the two brothers, Ming Zhao and Ming Ye, and they could basically guess its function at a glance.

Yun Lan used ethereal tricks to hide her aura, and passed them by the cover of trees ten meters away.

No one noticed that there were a few more retrograde people when most of them were preparing to leave this very dangerous secret realm.

The iron-eating spider was huge, and its floor area was not much different from that of the Flame Demon Bull, except that its eight legs accounted for most of it.

The advantage of its large size is that its trajectory is very clear, and with the group of small spiders, Yun Lan easily found the direction it came from, and followed those traces to the center of the relic.

In a month's time, the smell of the iron-eating spider leaving a shock to other demon beasts along the way had long since dissipated, and through the second layer of formation, Yun Lan encountered many demon beasts.

She doesn't care if she is below the fourth order, if she encounters a fourth-order demon beast, it depends on the situation.

If the race is weak, and the materials on his body are not helpful to Yun Lan, he will go around directly; Those with equal strength will fight with them, accumulate combat experience, and become familiar with today's strength; Powerful ...... At present, I have not encountered a powerful demon beast.

That iron-eating spider was a mid-fourth-order demon beast, and the level of the demon beasts around the original place should not be very high.

Now the tide of beasts in the relics has stabilized, but the demon beasts have not returned to their original area, and are only trying to move back. Therefore, the forest is chaotic, and the spirit grass that was originally guarded by demon beasts has also been destroyed, and only treasures such as mineral veins are still well preserved.

The Heavenly Star Lotus guarded by Mo Jiao could be said to be an exception, it was originally staying in the outer area, and if nothing else, the Heavenly Star Lotus would only attract the surrounding third-order demon beasts when it matured.

Who knew that a battle of sixth-order demon beasts had brought so many competitors to it, and finally died at the hands of Yun Lan.

Yun Lan was in a hurry, cultivating at the same time, and when he met the demon beasts, he fought with them, and soon became familiar with the power of the peak of the Jindan period.

Her current strength plus the top-grade magic weapon mace, there is no problem in fighting a mid-fourth-order demon beast, plus the demon beast does not have all kinds of means like human cultivation, and without the intervention of a third party, grinding can also grind to death, but it is basically impossible to fight quickly.

If he encounters a demon beast at the peak of the fourth order, as long as it is not the one that is good at speed, Yun Lan is sure to successfully escape.

Yun Lan's location was getting deeper and deeper, and she even saw a fifth-order demon beast from a distance.

What is the concept of a fifth-order demon beast?

The fifth-order demon beast is equivalent to the distraction period of human cultivation, that is, the realm of Master Yun Lan, Ming Xuzi, and Uncle Xuancheng Daoren.

Fortunately, that guy was far enough away from her, otherwise Yun Lan would not be able to escape the other party's lock, no matter whether she used a divine step or an ethereal trick.

This also made Yun Lan more and more sure of his previous judgment, there must be more than just those two sixth-order demon beasts in the Relics Mansion, there are other more powerful guys lurking.

The traces of the iron-eating spider eventually disappeared into a mess of rocks, and in the distance was a wide river, connected by a large tidal flat.

The tidal flat is the middle zone between the high tide and the low tide of the great river, Yun Lan does not know where the source of the river water is in this immortal relic mansion, and where it flows, there is actually a high tide and low tide, but it is certain that there must be a lot of demon beasts lurking in it.

Yun Lan searched for a while, and finally found a clue behind a small stone mountain on the shore.

The inside of the stone here is tightly glued to the spider silk, and if you don't pay attention, you will really think of this place as a natural stone mountain.

Fire attribute spells can melt these spider silks, although Yun Lan is an ice attribute spirit root, but now she has other ways to use fire.

She took out the Vermilion Bird Feather she had obtained from the formation from the ring, and the bright red feather caused a wave of heat as soon as it appeared in the air.

Yun Lan placed it on the spider silk, and the spider silk was immediately ignited.

Without the support of spider silk, the stones slid to the ground, revealing a dark cavern about a man high.

It still doesn't feel right, how can a spider be so big, such a small cave to enter?

After wandering around the entrance of the cave for a while, there really didn't seem to be a passage around that could accommodate the iron-eating spider to enter, so Yun Lan prepared to seal the entrance of the cave again.

This cave is so small, you can't even fight if you go in, Yun Lan doesn't need to bet on the probability of this cave leading to the sound stone mine.

There's no way the iron-eating spider could get in from here, there must be other passages nearby.

Moreover, if you seal the entrance of the cave before leaving, you can also avoid some accidents, even if something comes out of it, when it opens the stone at the entrance of the cave, it will also make a sound to remind Yun Lan.

Yun Lan used her spiritual power to move the surrounding stones over, preparing to bury the hole directly, instead of blocking it like before.

Unexpectedly, as soon as the stone was thrown in, before it hit the ground, a spider silk flew out of the cave and attacked Yun Lan.

A three-foot-thick wall of ice instantly appeared in front of Yun Lan, blocking the path of the spider silk.

The spider silk was so powerful that it barely stopped after piercing the ice wall.

You must know that this ice was condensed by Yun Lan with spiritual power, and its hardness was equivalent to that of a low-grade magic weapon, but it was easily pierced by the other party.

Yun Lan's divine sense quickly swept over the other party, it was an iron-eating spider that was about the same height as a human, and it was even smaller than the group of small iron-eating spiders that the big iron-eating spider had brought before, but its strength had reached the late stage of the fourth order.

？？？？？？

It is recorded on the Spirit Beast Collection that the female of the spider monster beast is much larger than the male, but this gap is inevitably too big.

Moreover, after giving birth, female spider-like monsters often eat male spiders to replenish their own spiritual power consumed by giving birth, but this one has become an exception.

Fourth-order demon beasts did give birth to such a little bit of wisdom, just such a little wisdom, did they still give birth to feelings?

Four days ago, Yun Lan only got her share of the materials on the iron-eating spider from Huang Xinyue, although several days have passed, but for the demon beast, it is still possible to detect the breath left by his spouse on the other party at close range.

The iron-eating spider roared and burst out of the burrow on eight long legs, as if to avenge its mate.

Despite the small size of the male, the metallic glow on its body was brighter than that of the female.

Moreover, its cultivation has reached the late stage of the fourth order, and its strength should not be underestimated, perhaps this is also the reason why the female iron-eating spider left it alive.

It is impossible for it to break through to the late fourth order by eating this male, but if you keep it, it will have one more bodyguard to take care of.