Above the endless wasteland, a huge black city crawled on the ground like a giant beast.

The walls of the city were full of dense Yin soldiers and ghost generals, and if Lu Yu was here, he would be very surprised to find that the Yin soldiers and ghost generals in this giant city were different from any city he had seen before.

They patrolled the walls in an orderly manner, walking in order.

It's like a squad of well-trained and well-equipped soldiers!

On the gate, which looks like the mouth of a fierce beast, there are three big characters written on it - Underworld City!

This is the base camp of the Ghost Emperor of the Underworld, the Immortal City is a fortress that he has spent thousands of years of hard work to build, and he is very confident that even if he is besieged by the three top Ghost Monarchs.

As long as he is in the Underworld, he will be invincible!

But now, the Ghost Emperor felt that even if he was in this impregnable city, he didn't have the slightest sense of security.

Because the Diyuan Dragon Monarch was actually promoted to a ninth-order Immortal Monarch, and he also issued an edict that if he didn't go to the Hanging Sea to meet him within a month, he would be killed to set an example!

No matter how powerful the eighth-order Ghost Monarch is, the Ghost Emperor is not afraid at all, even if he can't be defeated, there is no problem in escaping.

But how are you going to fight the ninth-order Immortal Monarch?

The distance between this is estimated to be the same as the gap between a first-order geist and an eighth-order ghost monarch!

But the Ghost Emperor didn't want to go to the Hanging Sea upside down from the bottom of his heart, why did the Earth Yuan Dragon Monarch summon the top ghost monarchs to the Hanging Sea to meet him, it was nothing more than wanting to rule the entire ghost world.

And these ghost kings will become the swords and guns in his hands!

Where is there any freedom to speak of?

Sitting on the throne, the Ghost Monarch let out a long sigh, knowing that this was the result, it was not easy to return to the ghost realm before, and if he stayed in the human world, he could hide for a while.

"If I take the shit luck and find the Book of Life and Death, maybe I can also be promoted to the ninth rank!"

After muttering a word, the Ghost Emperor couldn't help but think of Lu Yu's figure.

He had seen this human being more than once, at first when he appeared next to Cao Qiuran, he was weak like an ant, but after a short period of time, Lu Yu actually grew into an existence that could be compared to himself.

Abnormal!

It's weird to grow at such a fast rate!

"Could it be that he really controls the book of life and death in his hands, so the speed of growth is so fast?"

But soon he denied this idea, if there was really a book of life and death, he should be able to help the Nine Phoenix Ghost Emperor to be promoted to the ninth order, and he would not be chased by the Earth Yuan Dragon Monarch like a water dog.

But why did Diyuan Longjun chase him?

"Even if Lu Yu doesn't have a book of life and death on his body, then there are definitely clues to the book of life and death, so he will be besieged and killed by the four top powerhouses of Diyuan and Longhuai, so the arrogant Nine Phoenix Ghost Emperor will desperately protect him!"

How could I not have thought of this?

I knew that this was the case, I shouldn't have fought and killed when I entered the human world at that time, so I just expressed my attitude and showed favor to Lu Yu!

The Ghost Emperor sighed again, now that the passage to the human world has been destroyed by him personally, the chance of seeing Lu Yu is already very small, maybe the next time they meet will be a soldier again.

At this moment, the Immortal Ghost King's brows moved, and the expression on his face became very exciting.

Surprise, surprise, disbelief, and other emotions all welled up on his face.

Because at this moment, there were four incomparably powerful auras descending on the sky above the Underworld City, these four auras were all top emperors, and there were three that he was very familiar with, namely Cao Qiuran, Lu Yu and the Nine Phoenix Ghost Emperor.

I was still thinking about how to see Lu Yu and them again.

And in the next second, these three people appeared directly in their own city, what is this, did God respond after hearing his call?

At this time, the sky above the city of the underworld.

The four of Lu Yu stood in the east, west, north and south directions, encircling the Underworld City.

Originally, Lu Yu and the others just wanted to try their luck, but they didn't expect to sense the powerful aura of the Ghost Emperor from a distance, and the four of them cautiously approached this huge city before revealing their aura.

Surrounded by the four of them, it is believed that the Ghost King will definitely be unable to fly.

At this time, the high-level ghosts in the Underworld City also discovered the existence of Lu Yu and the four of them, but they did not panic, but appeared in an orderly manner where they should exist.

"Buzz ——!"

From all sides of the city, pitch-black pillars of light began to rise.

These pillars of light converged in the sky to form a semi-circular translucent barrier, enveloping the Underworld City tightly.

Seeing these well-trained Yin soldiers and ghost generals, Lu Yu's eyes showed a deep look of surprise, it was the first time he had seen such ghosts, in his impression, most of the ghosts were chaotic and crazy.

There is little reason to speak of, and when you see someone, you will rush up and bite twice.

And after encountering ghosts of a higher rank than themselves, they will appear to surrender.

But after feeling the coercion of the four of them, the ghosts in this underworld city only panicked for a moment, and then began to organize the defense system in an orderly manner.

It's incredible!

I have to say, this Ghost King really has two brushes!

Lu Yu looked at the black translucent barrier below and said to the other three:

"I'll try the hardness of this turtle shell first!"

As soon as the words fell, he raised a hand, only to see a huge fireball quickly gathered on his palm, and the fireball quickly grew larger, and soon turned into a super fireball with a diameter of four or five meters.

The fireball emitted an unusually terrifying heat, and the void near it was burned and distorted.

"Go!"

Lu Yu held the fireball and threw it down.

I saw that the fireball was holding a black-red flame tail and crashed into the black translucent barrier.

"Boom!"

There was a loud muffled sound, and the whole city seemed to tremble, and black and red flames burned all over the barrier above the Underworld, and when you looked at it from the city, it felt as if the entire sky was on fire.

But that's all, although Lu Yu's fireball was very powerful, it didn't cause any damage to the barrier.

The flames above the barrier slowly extinguished, and there was not even a crack on it.

After seeing this scene, the four of them all showed surprised looks, they could all feel how powerful Lu Yu's blow was, but this barrier was unharmed.

After a second of silence, Lu Yu said:

"It seems that we still underestimate this Ghost Emperor, everyone, let's do it together!"

"Good!"

As the words fell, a burst of rich gray-yellow light emerged from Cao Qiuran's body, a heavy grinding disc appeared in his hand, and the Nine Phoenix Ghost Emperor also spit out fire snakes and ice balls.

And the Red Dragon Girl drew out a spear in dark gold, and the murderous aura on the spear was pervasive.

Lu Yu was not idle, and he once again gathered an even larger fireball.

Just when the four of them were about to make a move, the figure of the Ghost Emperor quickly appeared in front of everyone, and he said loudly to Lu Yu and the others:

"Don't fight, I surrender!"