Seeing these origin stones, Tang Zhen's mood immediately relaxed a lot.

Tang Zhen's reserve of Origin Stones had long been depleted, which also made the mobile phone unable to be replenished due to lack of energy after sealing the Holy Dragon City, and completely entered a dormant state.

Without the assistance of his mobile phone, Tang Zhen's combat power was greatly reduced, and many important things could not be carried out, and he was also very helpless about this.

Therefore, resuming the re-operation of the mobile phone is extremely important for Tang Zhen, and the most critical point of resuming the operation is to absorb and replenish a large number of origin stones!

Originally, there were still a lot of origin stone reserves in the Holy Dragon City, but after the city was sealed, he couldn't take them out at all, so he had no choice but to teleport out of the barbaric war zone and try to collect them through other methods.

However, things like origin stones are basically only circulated among king-level monks, and there will be a large number of reserves in national-level buildings, and if Tang Zhen wants to collect them, he can only find a way from these buildings.

Forced by the situation, Tang Zhen had to take a shortcut.

As a result, before Tang Zhen could take action, he unexpectedly obtained the Origin Stone that almost filled half of the metal room, which was definitely an unexpected surprise for him!

After absorbing these origin stones, the dormant phone can definitely resume operation, and there will even be a large amount of surplus.

As for the usefulness of these origin stones, Tang Zhen knew very well in his heart that they should be the main energy source used to maintain the operation of the rune magic array, and according to the number of accumulations, it was estimated that it would not be a problem to run for thousands of years!

God knows which guy was so extravagant that he directly stored so many origin stones in order to maintain the operation of the rune array!

Silently gave a command in his heart, and the mobile phone he wore on his chest vibrated violently a few times, and then he saw that the origin stone in the metal room was rapidly reduced, and it didn't take long for only a thin layer of ground remaining.

Looking at the mobile phone interface that reappeared in front of him, Tang Zhen's heart relaxed slightly, and a smile appeared on the corner of his mouth.

Stepping into this metal house, the things inside immediately came into Tang Zhen's eyes, it turned out that in addition to a large number of origin stones, there was also a "person" here!

It's not entirely right to say that this guy is human, because he doesn't have hands or feet except for his head and torso, but instead has metal wires extending from his body and connecting to the control nodes of the rune circle, which looks extremely solid.

Obviously, Tang Zhen's previous inference was very correct, this guy who could no longer see his original appearance was the core of this rune array, and the giant sarcoma was also controlled by it.

But the guy was dead, because in the back of his head, a whisker that had pierced the metal house was attached, but now it was broken, and a large amount of slime was dripping to the ground.

The real cause of its death was a huge hole in its head, on which lay a strange dead bug that was supposed to exist in the brain.

Judging from the traces of the corpse, this guy should have just died.

However, what really shocked Tang Zhen was that there was a cornerstone platform in this room, and there was a cornerstone of the building city that was hanging in mid-air!

This ruined world full of terrifying giant insects turned out to be a special building city!

Tang Zhen was a little confused by this sudden unexpected situation, but soon his eyes lit up, and he thought of the information he had seen in the Dream City Lord's notes, which seemed to record this special kind of building.

Space building, as long as it is completed, will form a special and independent small world, with the continuous upgrading of the building, this independent small world will continue to expand!

This kind of building city can be encountered but not sought, and there are only a few dozen of them that have appeared publicly in the history of the building world, and it is unknown whether there are other hidden space buildings.

The building city owned by the Dream City Lord is actually a special kind of space building city!

The main function of this kind of space building is to provide an independent small world, but there is no building inside after completion, and the residents of the building city must build it by themselves if they want to live in the house!

Therefore, the ruins of the buildings outside were all built by the residents of the building city here with ordinary materials, and Tang Zhen did not find a trace of the atmosphere related to the buildings of the city.

As for why these buildings were destroyed, I think it has nothing to do with those giant bugs!

Walking to the cornerstone platform and taking a look, Tang Zhen found that it was still operating normally, and it was also recognized by the cornerstone general control platform in the theater.

That is to say, as long as Tang Zhen has the identity card of the residents of this building, he can directly use this cornerstone platform to trade, but if he wants to obtain the highest authority of the entire building and use the special functions of the space building, he needs the permission of the city lord.

However, it is not easy to obtain the authority of the city lord, it requires a series of complicated steps, and finally it has to be recognized by the cornerstone platform, which is also the reason why there are few usurpations in the city.

Since Tang Zhen was lucky enough to encounter this rare space building, he naturally wouldn't miss it easily, even if the residents of the building city here still existed, he would not hesitate to snatch it!

Fortunately, the residents of Loucheng here have been dead for I don't know how many years, and they have completely become a borderless land, which saved Tang Zhen a lot of trouble.

Since it has been decided to take this abandoned building city for himself, the cornerstone of the building must not be moved, and it is even necessary to protect it at all costs, because once others know about the existence of this cornerstone, it is estimated that they will rush to snatch it desperately!

Because the inhabitants of this building are dead, anyone can take them out until a new master appears!

Thinking of this, Tang Zhen couldn't help frowning, because the access channel from the outside world is definitely a huge hidden danger, and if you want to monopolize this building city, you must firmly guard the passage entrance.

Thinking of this, Tang Zhen immediately waved his hand, and more than a dozen drones appeared in front of him, and then flew towards the location of the passage according to the instructions.

Waved his hand again and released the only five armed robots left, so that they could also participate in the protection of the passage entrance, Tang Zhen breathed a sigh of relief.

With the protection of drones and armed robots, I believe that no one will be able to enter here in a short period of time, and what Tang Zhen has to do is to speed up and usurp the authority of the lord of the building!

If you don't get the main control platform of the Savage War Zone, or if the lord of the building city here still exists, this matter will become very difficult, and when the vast majority of the building monks encounter this situation, they will basically choose to take the cornerstone and let the building city be destroyed!

After all, under normal circumstances, it is definitely easier to simply destroy!

"Can you hack into the cornerstone platform here and help me get the permission of the city lord?"

Tang Zhen gave an order to his phone, and then waited for its reply.

[Analyzing...... Can it be bruciedly cracked, is it possible to execute the command? 】

Today's mobile phones have become more and more perfect, which also makes Tang Zhen much easier to operate, and many things can be done with just one command.

"Crack it now, the faster the better!"

Tang Zhen was overjoyed and immediately gave instructions to confirm.

The mobile phone that got the command immediately began to work, because there is a mobile phone replication system in the main control platform of the Savage War Zone, so a lot of data can be called, which also makes it much less difficult to crack.

Just as the mobile phone began to crack the cornerstone platform that invaded the building, Tang Zhen's eyes turned to a table next to him and landed on a stack of books.

Maybe you can learn a thing or two from these dusty books!