In the magic tower, the most common ones are various magic materials, tools, utensils, etc. Rob looked around and threw the things he thought were useful into the storage ring.

Magical materials, Rob had already cleaned up the laboratory downstairs, and he specially picked up those precious and rare materials. After spending more than 200 years in the magic tower, he stayed in the laboratory for most of the time and had a very high vision of various materials.

After getting to the bedroom, he found that in the laboratory, there were precious and rare materials, but the most rare materials were all placed in the bedroom. On the row of shelves against the wall, there were ten soul crystals stored.

How did the soul structure come from? The soul structure, as the name suggests, is a soul-owned structure. The weakest structure must have a soul to be called a soul structure. This structure has a relatively high intelligence and can engage in some more complex tasks. It is a more advanced structure than a mechanical structure.

So how did the soul of the construct come from? It was born from the soul crystal. In the dark alchemy, there is a magic to extract souls from the living person, but this is not to be tolerated by the orthodox magic world. The technology of extracting the living person to refine the construct has been severely hit since its birth.

It was not until the emergence of the soul crystal that the soul construct really entered the orthodox magic world and flourished. Now, most of the repetitive non-important work in magic towers like Saidi are done by the constructs. A small number of them are extreme enough to have only one living person in the entire magic tower like Saidi.

Even the soul structure began to spread to the ordinary class of powerful and wealthy businessmen, becoming products that are no longer exclusive to the magic world. Especially those noble women with special hobbies, there are also specially customized bed-specific soul structures for them to choose from.

The soul structure has gradually become a tool to influence the magic world and the powerful.

Soul crystal is the key to the increasing number of soul constructs. With this efficient, safe and moral soul generation tool, soul constructs can be produced on a large scale and applied to various fields.

However, soul crystal is not so easy to obtain. This is something that even if you have money, it is useless for ordinary people to get this thing, but when it falls into the hands of the builder, it can immediately turn into a transformation and become a builder who can make soul constructs.

There are actually ten soul crystals in the bedroom, each of which has a weak soul fluctuation, and it is obvious that the soul is nurturing. The process of soul crystal nurturing souls is very simple. It will automatically disturb the soul energy in the air and nurturing it into a complete soul. The whole process is fully automatic and can be completed wherever it is placed.

Rob naturally put such rare materials into the ring without saying a word.

"Dear Mr. Construct, what should you do to let me go? No matter what conditions you have, just open it, I can make a devil's oath and will definitely keep my promise, as long as you let me go." The strange bird, who had tried every means but still couldn't get Rob's response, finally became anxious.

This strange construct added magic crystals several times to the magic cage. It would take at least half a year to wait until all of these magic crystals are exhausted. If it were the past, the monster bird would be trapped in the cage at most. But now Saidi is obviously dead, which means that no one will feed it.

If it is not released, it will starve to death before the magic crystal is exhausted. After realizing this, the monster bird will find that its situation becomes even more dangerous when Maddy is not dead.

Demonic oath? When he heard this noun, Rob suddenly became interested because he had heard this noun and knew that it was probably a kind of oath or something, but he didn't know what it was.

"What is the magic oath?" Rob's mouth made a cold and hard mechanical sound, like a few copper skins scratching, a little deformed and sharp.

A low-level metal and wood structure like him originally had no sound structure. He removed this sound device from a damaged high-level structure and modified it himself. He only secretly tried it a few times when no one was present, but was not skilled in using it.

Although the sound is very unpleasant, at least I still express what I want to say clearly.

The strange bird looked at Rob in surprise. Such a strange structure, obviously with a very high-level structure with a very intelligent one, doesn't even understand what the magic oath is?

A smart construct almost only exists in legends. As a level nine monster... the strange bird of the fantasy bird has never seen it with his own eyes. I think that even if such a high-level construct is omniscient, he will definitely not understand such common sense issues even if he knows everything, right?

"The Demon Oath is a kind of oath based on magic and spirit, with coercive binding power." The strange bird explained.

Robumu looked at the strange bird blankly, and Mu had no expression. The low-level structure was originally expressionless, and the glassy eyes could not express the emotions in his heart.

"Don't understand?" The strange bird was a little angry when he was seen and asked with anger.

Rob nodded.

"Hu." The strange bird sighed helplessly. What could he do? If he didn't convince this strange structure to release it, it might starve to death because it was not fed. When he thought of this serious consequence, the so-called dignity and arrogance of the monster as a level nine monster were thrown to the alien plane.

"In the name of me, Durodo, as long as the noble constructor is willing to let me out, Durodo will never hurt the constructor. If you violate this oath, you will lose all your feathers and die." Blue Feather Ling is a level nine flying monster known for its gorgeous feathers. It is the most terrifying way to die for it.

As the strange birds were muttering, a pattern emitting a faint light appeared outside the cage, which was composed of some strange lines, like some kind of text.

Rob stared at the pattern for a while, and could not see any destructive power, then he carefully stretched out his finger and poked the pattern.

The pattern suddenly exploded, and the energy penetrated into Rob's body along Rob's fingers.

A large amount of information was carried in the pattern, and it was imprinted into Rob's soul, instantly allowing him to understand what the so-called demon oath was. This is a kind of spiritual magic with compulsory nature, cast by the creature that made the oath and formed a brand. When the creature that made the oath violated this promise, the spiritual magic would backfire itself.
Chapter completed!