Seventeen days later.

Calculating the time, Green has already touched the edge of the world three hundred and twenty-two times in this fragment of the world without specific coordinates and references.

This fragment of the world is indeed constantly changing its form, like a soft irregular jelly shape.

After so many times of shuttling through the bottle mouth world to search, on this day, after Grimm, who was flying boringly and boringly, passed through the chaotic energy ribbons, suddenly, a foreign object shadow in the upper corner made Green stunned.

This is......

The real yàn room of the metal castle has finally been found!

More than 300 meters high, the main castle is connected to dozens of houses, exuding a cold metallic luster, and there is an energy harvesting device at the top of each house, although most of them have been damaged, but there are still a few that are running automatically, and from time to time there are flashes of light.

Since there is no sky, ground, or direction to be traced in this bottle-mouth world, this castle is a reclining and floating foreign object in Grimm's field of vision.

After adjusting himself to the same angle as the castle, Green cautiously flew towards the metal castle.

According to the information of the sorceress metal villain, this metal castle is the thing that comes with the bottle-mouth teapot seal world, and it is the flying machine of the ancient mechanical wizard, which was later transformed into a real yàn room by her mentor's mentor.

And her mentor, after the defeat of Shiyàn, "roosted" in this metal castle.

Well?

On the metal gate of the castle, the deep marks of the six fingernails are very conspicuous, and they are a finger deep, which should be caused by the deformed monster transformed by the metal villain mentor in this castle.

Without the protection of the wizard's cover, Green was extremely cautious about such an attack.

Thinking like this, with a "crunch", Green pushed open a gap in the metal gate seven or eight meters high with a slightly solemn face, and walked in.

The gate automatically "creaks". Close again.

The fragments of the magic crystal lamp were scattered on the metal floor, and there were some other miscellaneous items, and I don't know what the mechanism principle was in this metal castle, but it actually had gravity to simulate the wizarding world environment.

Suddenly, as if he had noticed something, Green paused to pick up a scale from the broken debris.

The scales are blue-gray, unstriped, like a shell, and are made of very hard material, presumably the scales of some ancient invertebrate protist.

"Is it self-evolution?"

Green muttered to himself after guessing. He shook his head in self-denial and said, "No, it should be a reflection of rejection." Just like bloodline witchcraft, without the wizard's long-term self-will, these foreign objects will soon have some kind of repulsive reaction with the wizard himself, or mutate, or expel them. ”

There is no dust in the metal castle, because there is no mass of biological cell metabolism here, and there is no dust from nature, so it is still brand new.

After passing through a metal corridor. Green made his way to the castle hall.

The four walls of the castle hall tens of meters high are full of claw marks, and the large crystal chandeliers on the ceiling, which were once luxurious and beautiful, have now fallen to the ground. Broken and old.

This time, Green found a large trace of metal dissolution.

Walking over to the metal layer of the dissolution marks, Green reached out and stroked and felt.

After a while, Green got some information. This is probably the instinctive witchcraft that the metal villain crystal ball image mentions that her mentor left behind in the cell's memory during his lifetime.

Judging by the state, it should be some kind of dissolving liquid sorcery, and the ice attribute sorcery should be able to perform some restraint.

Tilt your head. Green looked at the environment in the hall and his eyes began to think.

Needless to say, the greatest wealth of any wizard's private residence is the wizard's knowledge in the real yàn room, and this metal castle has so many rooms, it obviously takes a while for Green to loot it.

And before that, since you want to get rid of that unintelligent monster, it's better to be prepared.

Thinking like this, Green cut through the dimensional gap, took out a large number of high-purity fire crystals and magic stones, and began to arrange them according to a set of regular trapped magic arrays.

After a full hourglass time, he briefly tested the magic array, and under the face of truth, Green nodded in satisfaction, and his figure disappeared from the hall in a flash.

Search from room to room, where there is a disgusting, thick stench.

Most of the rooms were vacant, and occasionally some of the rooms that used to store real yàn materials were also destroyed, and the real yàn specimens were eaten.

Gradually, as Green went deeper and deeper into the metal castle, a door that was still protected by magic prohibitions made Green slightly stunned.

Call!

The unquenchable flame ignited, and Green's hand landed on the magic ban, and after resisting it for a while as the magic ban flickered and flickered, it finally went out with a "poof", and Green pushed open the metal door of the room with a "squeak".

"Uh, what is this?"

The room was empty, only a black round metal ball in the center was very abrupt, I don't know what it was.

Green's eyes flashed under the face of truth, and he walked over in confusion.

The diameter of the metal ball is about three meters, the metal material is very special, and the feel is a little soft, it seems to be a strange witch weapon, which requires an elemental code to control and control.

"Hmm? It turned out to be a windfall, and I don't know what it was. Without hesitation, Green directly closed the metal ball into the dimensional gap.

When it comes to cracking elemental codes, there are specializations in the art industry, and some of the Demon Hunters in the Holy Tower have guys who specialize in this type of wizarding knowledge.

Slightly delighted, Green left the room and continued to search the other rooms.

It was a real room for collecting insect specimens, but now it is a mess, and all the insect specimens are missing.

It was a real room for collecting plant specimens, and it was also a mess, an orange vine bud that could take root in the metal was hidden by the rubble, and Green was very surprised to collect it carefully.

The library was littered with shredded pages that had been eaten and torn, and Green had collected some barely legible books and scrolls.

......

Half an hourglass later, finally, at the door of an open hall, Green stopped.

"Finally found it!"

In the battle stance, Green unlocked the first layer of wild instinct for the first time, and after a dense layer of scales poured out of his body. The face of truth looked at the monster that seemed to be amiss.

Overall, it is a crawling creature on all fours, clinging to a wall like a gecko, biting at a sheepskin scroll, seemingly eating as if it were a piece of leather.

A pair of hind limbs are extremely thick, with what appears to be some kind of sucker-like structure under the feet, and there are still some scales that have not fallen off.

The forelimbs and claws have six sharp nails tens of centimeters long, like six sharp knives, shining brightly and exuding a ghostly light.

The scales on his body had completely peeled off, revealing the bright red musculature beneath the scales, and a head almost as hideous as a beast was bared with fangs. The nose sniffed back and forth.

Well?

No, it also has a large mouth on its abdomen, which is also the source of the despair of humans, this is some kind of mutation produced by the transplantation and grafting of dark wizard cells?

"Roar! Meat ......"

With a "boom", the monster hissed and rushed over the moment it spotted Green.

A pair of claws that looked like six-handled sharp knives and daggers dissolved the metal wall lightly, and a pair of suction cups under the feet of its hind limbs allowed it to crawl on the wall as if it were walking on the ground.

"Drink!"

With a loud shout, Green reacted with great speed and pressed it on the monster's hideous head. Leaping up on his feet, he dodged a pair of sharp claws from the opponent.

With a "squeak", twelve claw marks were scratched on the metal floor.

After the pupils of the eyes under the face of truth shrank, there was a "bang", and the monster's head was pressed to the ground by Green. At the same time, after quickly collecting the life information of the monster, Green jumped backwards with great agility.

Boom! Boom!

The three firebirds exploded in witchcraft, and the billowing flames instantly submerged the monster, and Green flew towards the magic array with a piece of minced meat in his hand.

"It's so weak. Compared to Cheng Dù on the crystal ball image of the metal villain, he is not at the same level at all, is he hungry?" guessed, Green smiled excitedly.

Fortunately, the strength of the opponent's life box fell sharply after being reincarnated. I didn't come in to investigate.

Of course, even if this monster is only the strength it has now, it is by no means something that the metal villain Wizard Ao Yi, who has only been reincarnated for decades, can deal with.

While preparing for the curse witchcraft, Green quietly waited for the monster to break into the magic circle.

"Roar......

A fierce and brutal phantom rushed out, without any hesitation, and plunged into the magic array, and for some reason, Green suddenly found that the magic array became difficult to control at the moment when the monster broke in.

What's going on?

For a moment, after thinking about it a lot, Green suddenly had a flash of inspiration, could it be because this monster was a master of the magic array before his death?

In this way, it also explains the powerful source of magic forbidden by the metal villain wizard Shiyàn Castle.

With Green's poor knowledge of magic prohibition, he can only fiddle with it in front of some exotic creatures or magic apprentices.

Green couldn't help but feel a little annoyed and ashamed in his heart, the magic ban he had spent a lot of time arranging was broken by a wizard walking corpse who had lost his mind, and it was a bit embarrassing.

"It doesn't matter, though...... Frost Greatsword!"

After taking a deep breath, Grimm cast the same inferior cursed sorcery as he stretched out his hand and a frost greatsword appeared.

Suddenly, the surrounding temperature also seemed to drop, and large ice crystals flew up.

This is the sorcery that Green completed during the three months when he came to the Metal Villain Castle to recuperate after obtaining Millie's Ice Essence Body talent, and after taking the time to learn the knowledge of the ice element during the past few years of travel.

Overall, it is also a reference to the talent of the Flame Giant for refining the lava greatsword.

Drink!

After the frost greatsword slashed in the air, protecting it from dissolving black water, Green glanced at the giant sword that had melted most of it, and after the magic surged, there was a "crunch, crunch" sound, and the frost greatsword condensed again.

Without hesitation, Green charged back at the hungry monster with the Frost Greatsword in hand......

After an eighth-hourglass time.

The Frost Greatsword in Green's hand turned into ice crystals in the sky, kicked the hard crumble of flesh that had been cut into several pieces by himself, shook his head, and was about to continue to probe other valuable things in this metal room, when he suddenly sensed that something was wrong.

Knock, knock......

In the belly of this monster, there was still a faint heartbeat that did not stop.

"Heart of Life!"

After Green exclaimed, he quickly peeled off the monster's already hard broken corpse, and a beating bloody heart appeared in front of him. (To be continued......)