After withdrawing from the state of visualization, Xin You could clearly feel that his soul had become tougher and stronger like steel that had been tempered thousands of times.

Next, Xin You visualized the thousand-year-old ghosts at the rate of 1 to 3 thousand-year-old ghosts every day, and fought with the increasingly powerful thousand-year-old ghosts in the dim visualization space.

Before, he definitely couldn't withstand such a high-intensity cultivation.

Fortunately, now that his soul is strong enough, he has been practicing non-stop day and night, although he feels very tired, he still gritted his teeth and persevered.

If he couldn't hold it anymore, he would rest for an hour or two.

During this break, he either closed his eyes to relieve his fatigue, or walked around this sanctuary in the Eleah civilization to relieve his nerves, which were always tense.

The shelter was long gone, and under the control of the cold wave, it was running at full capacity.

The air-making machine was activated the moment the cold wave seized control of the shelter, and the turbid air containing the poison was absorbed and filtered, and the fresh air was released.

On the street, there are alchemy puppets that have been activated, they play the role of cleaning, in the room, on the street, the dust that can be seen everywhere has been swept away by them, and the dry bones in the room have also been carried away and cleaned up.

"Do you know how these people died?" Cold Tide pointed to a dry bone that had been carried away by an alchemy puppet and asked Xin You.

"I don't know." Xin You shook his head.

"This is a secret shelter, and the people who died here were all workers and alchemists who were responsible for building this shelter, however, after the shelter was completed, the owner of this shelter killed these people in the vault with a special alchemy potion, and as a result, how many years have passed, and the owner of the vault has not reappeared until the destruction of his civilization, and this shelter has gone through tens of thousands of years and has been sealed until now." Cold Wave Road.

Xin You was a little staggered.

He had always felt that the death of these dry bones looked very strange, and it turned out, similar to what he had guessed, that these people were all poisoned.

In the shelter, there are 192 alchemy puppets covered in pitch black and responsible for patrolling and guarding, of which 160 have the combat power of 2 or 3 stars, and 32 have the combat power of the human male rank.

In a secret warehouse, there are 17 king-level alchemy puppets, all of which have bright silver bodies, and the surface of their bodies, whether it is armor or blades, or even their eyes, are engraved with fine runes, these runes are as small as the texture of the skin, and they can't be seen at all if you don't look closely.

This made Xin You realize that the cold wave was right, the alchemy civilization and the technological civilization seem to be very similar, but they are actually two completely different civilizations.

According to the words of Cold Wave, these 17 puppets can be regarded as multi-functional combat-type puppets produced by the Eliya civilization, they can not only hold melee weapons and rush to kill, but also skillfully operate a variety of long-range alchemy weapons to kill enemies from a long distance.

It's just that, in addition to their sense of battle, their other self-consciousness is not strong, and in terms of intelligence, they are far inferior to Xin You's evolvable alchemy puppet - Xin Kui.

In the entire Vault, the most powerful combat power is not these 17 silver multi-functional combat-type alchemy puppets, but a middle-aged uncle with a long beard and a somewhat decadent appearance.

The uncle is wearing a somewhat old alchemy armor, his name is Kuqi, he is not a human, but a terrifying alchemy puppet with a human appearance, with the peak combat power of the king level, and the only alchemy puppet with a name in the entire Ailea civilization refuge.

Cold Wave said that the alchemy puppet Kuqi can almost represent the peak combat power of the Ailea civilization, and the stronger alchemy puppets than it are the half-step sage level and the sage level, and this kind of puppet is not nothing, but in the entire history of the Ailea civilization, the number of such legendary-level alchemy puppets does not exceed 200.

This information was obtained by Cold Wave from the vault's database.

In the interval between Xin You's cultivation of the "Ghost Burial Sutra" forging chapter, Cold Wave once invited Xin You to watch a 'military exercise' between alchemy puppets.

The venue for the exercise was placed in a barren area at the edge of another dimension.

The two sides, about 1,000 meters apart, were the 17 silver-glittering king-level alchemy puppets on one side, and the king-level peak puppet called Kuqi on the other.

Xin You and Cold Wave stood on the top floor of a high-rise building, condescendingly looking down on this outnumbered war.

With the order of the cold tide as the commander, the alchemy puppet Kuqi, who had the image of a decadent uncle, suddenly disappeared from Xin You's eyes.

Yes, it just disappeared.

Even if Xin You had opened the Void Eye long before the battle began, and entered a state of slowdown, the decadent uncle Kuqi still disappeared out of thin air in front of Xin You's eyes.

Kuqi's speed was too fast, and its speed was beyond the limit of what Xin You's eyes could capture.

This is a sign that the difference in strength between them is too great, and even if Xin You enters a state of slowdown, he still can't make up for the gap between them.

Fortunately, with those 17 silver figures, Xin You could barely see their movement clearly.

Ten bright silver figures turned into ten silver streamers and rushed forward, while the other seven silver figures stepped back as ranged attackers.

Their speed is extremely agile, and they can easily reach 5 times, 7 times, or even 10 times the speed of supersound.

Not to mention anything else, in terms of speed, these king-level alchemy puppets are definitely qualified.

Alchemy golems cannot use magic attacks, and the long-range weapons they use include alchemy bows covered with runes, alchemy crossbows that are dozens of times more complex than ordinary crossbow machines, and in addition, there is also a kind of magic alchemy cannon that can shoot a beam similar to a laser, and even matter can be annihilated.

After the battle began, just for a moment, with a bang, even a ripple visible to the naked eye appeared, and the bright silver puppet that rushed to the front was like being hit by a high-speed crystal magnetic train, and flew directly backwards hundreds of meters away, and its entire body was deformed.

In the next moment, three more bright silver golems were knocked out.

Hundreds of meters away, puff, puff, arrows full of runes burst into the air, and the terrifying speed caused ripples to appear in the space visible to the naked eye.

Faster than the runic arrows were two straight dark blue rays.

It's just that these terrifying ranged attacks all fell in the air.

The rune arrows and the straight dark blue beams of light did not make any waves after falling into the black mist at the edge of the other space, like mud cows entering the sea.