The abrupt system prompt sound in his mind made Zhang Dongyun stunned.

At the same time, in the distant valley, a brilliant ball of pure gold suddenly rose.

The movement of the Blood Demon Ring also stopped, and it seemed to turn its attention to the golden light.

That direction is where the core of the immortal trail is located...... Zhang Dongyun looked over there, equally surprised.

But what made him care more was the cold mechanical sound that sounded in his head.

Invincible City......

Isn't this a game that he was halfway through development when he was in Blue Star before he traveled through time?

Poor Mr. Zhang worked overtime until half of the time was overworked, and when he opened his eyes again, he arrived in this fantasy world.

Could it be because of obsession, the invincible city system in the game has crossed over with him?

The golden light in the distance suddenly expanded, sweeping away the white clouds and smoke in the canyon.

In the flash of golden light, in the white cloud abyss, a four-sided heroic city was built!

Xiongcheng landed, and Bai Yunyuan shook again, earth-shattering.

Such a change not only shocked Zhang Dongyun and the Blood Demon Ring, but also alarmed the two factions of the Hanshan Sect and the Mountain Tiger Hall who were fighting in the distance.

The two sides stopped and faced off on both sides.

While paying attention to the opponent, everyone paid more attention to the glittering golden city in the distant valley.

"What's going on?"

The big man surnamed Cao was shocked: "In this barren mountain and wilderness, there are no roads and no people, how can there be a city?"

The young man beside him had a flickering eye in one eye: "It's like the legendary powerful and powerful Dongfu...... Wait, could it be that senior?"

"The Cave Mansion of the Great and Powerful?" on the other side, everyone in the Mountain Tiger Hall exchanged glances with each other.

They suddenly left the people of the Cold Mountain Sect here, and rushed towards the golden city in the distance.

The big man surnamed Cao was moved: "The relics of the cave of the powerful and powerful must have countless magic cheats and rare treasures. ”

The one-eyed young man hesitated: "That senior just now ......"

"He was either rescued or kidnapped just now!" the big man interrupted the other party.

He beckoned all his fellow men to rush to the distant city:

"Whether he was taken away or rescued, it shows that he is just an empty shelf!

Baoshan is in front of us, if we miss it, we will be cheap to the people of Shanhutang, and then it will be our retribution!"

The big man said, grabbed the one-eyed young man, and ran towards the city.

On the other side, Zhang Dongyun looked at the city that flashed with golden light, and sighed in his heart.

To some extent, the evil emperor Ming Tonghui did not fail.

It is likely that he has succeeded in refining the Immortal Trace Core Fragment.

It's just that at a huge price, I was forced to be reincarnated.

If Zhang Dongyun hadn't crossed over, the evil emperor who used the spirit stone jade fetus to resurrect could also clean up the mess here now.

It's just that this may not be what it is now.

If only the existence of this world is considered, the evil emperor's plan can almost be said to have succeeded.

It's a pity that there are changes outside this world.

A traveler from the Blue Star brought the evil emperor to ruin.

While Zhang Dongyun sighed, the cold voice of the machine continued to sound in his mind.

[System binding successful!]

[City Lord: Zhang Dongyun

Current range: 1,000 meters from east to west, 1,500 meters from north to south, 500 meters above and 500 meters underground】

Zhang Dongyun looked strange.

The immortal core of this fantasy world was actually combined with the invincible city system that he was thinking about in his mind?

Birth of a true invincible city?

However, is this system still the same as the one he originally designed?

[This system is called the invincible city system, no matter what the city lord himself is currently cultivating, as long as it is within the range of the invincible city, it is invincible, no existence can harm you, and you can control the life and death of all living beings in the city, after you build the city, except for yourself, can not be destroyed, can not be destroyed. 】

[After exceeding the current coverage of the system, your strength will depend on your own cultivation. 】

The system prompt sounded again, and Zhang Dongyun breathed a sigh of relief.

That's the system he set up in the first place.

At first glance, Invincible City is the equivalent of a camp, safe house, or safe spot in other games.

At first, it was indeed just a small city.

However, the system will generate upgrade tasks, and the city lord will receive a different number of point rewards after completing various upgrade tasks, and when he reaches a certain number of points, the city lord can upgrade the city and expand the coverage of the system.

Theoretically, there is no limit to the number of upgrades, and there is no upper limit to the range.

As long as the city lord has enough bonus experience, the system can cover one country in one city, one city in one realm, and one city in all worlds, until the entire game map is covered.

In this city, the lords of the city are absolutely invincible.

But the problem is, it all works only in the city.

Zhang Dongyun is now outside the city, and he is an ordinary person.

The first priority is to go to the city first.

The Blood Demon Ring in front of him was also shocked by the appearance of the Golden Light City, and its ferocious aura was slightly restrained.

Your Majesty's refining of the core fragment of the immortal trail has not failed?

If it weren't for that, he wouldn't have been forced to reincarnate and rebuild.

It will not cause all the prohibitions in the ring to dissipate.

But what about that strange city?

Just when the old devil in the ring was in shock, Zhang Dongyun suddenly stepped forward.

He calmly looked at the tall fat man in front of him who had been turned into a puppet by the Blood Demon Ring.

Then he raised his hand and reached for the Blood Ring on the other's finger.

The blood light on the ring suddenly froze, like a frightened beast.

When Zhang Dongyun's finger approached the Blood Demon Ring, he could faintly feel that the other party would burst out at any time.

But his hand, steady and natural, took the ring off the tall man's finger in an understatement.

As soon as the ring left his body, the fat man with a stiff expression and dull eyes suddenly appeared dazed and weak on his face.

Then he closed his eyes and fell directly to the ground, like a collapsed mountain of meat.

"Do you recognize what that is?"

Zhang Dongyun was calm and calm, putting the silver ring on his finger.

The blood light on the ring was strong and weak, and it kept shaking: "Uh...... One, a city?"

"Wrong. ”

Zhang Dongyun put on the ring, walked calmly, and walked unhurriedly towards the distant Xiongcheng:

"It's my city. ”