In their opinion, it was a very difficult thing to open the passage between the two realms, even if the human Scattered Immortals or the Realm Kings of the Netherworld could open this passage, it was not so easy.

Otherwise, the reincarnation ghost king would not have been so troublesome, it took so many Nether Crystals to teleport so many ghost cultivators to the human realm through the teleportation array.

If you can open the passage between the two realms so easily like Cheng Yu, wouldn't you be able to pass the soldiers to the netherworld casually?

Thinking of this, the five of them were shocked, if Cheng Yu's strength was enough, wouldn't it be easy to send a large number of troops to attack the Netherworld?

In addition, they thought that as long as they returned to the Netherworld, Cheng Yu would have no way to control them. But now it seems that Cheng Yu wants to go to the Netherworld so easily, so wouldn't he be able to come to the Netherworld at any time to deal with them?

At this moment, the eyes they looked at Cheng Yu were even more fearful, although Cheng Yu was not as good as them in terms of realm. But when it comes to means, they are far from being able to reach them. There are too many mysteries in this human master, as if he really came to restrain their ghosts.

Not only is there the Extreme Yang Pill Fire that can easily hurt them, but there is also this powerful Yang Magic Weapon. Now even entering the netherworld is as easy as breathing, which makes them feel very insecure.

Now in front of Cheng Yu, they really have a feeling that they can't escape from Cheng Yu's palm even to the ends of the earth.

The Ghost King was already 100% sure that his current master was the human who stole the Holy Relic of the Netherworld back then.

Think about it, that human being was only in the Jindan stage back then, but he dared to enter the Netherworld, and he stole the holy relics under the nose of the Ghost King, which only a mysterious person like Cheng Yu could do.

Besides, how could a Jindan stage easily enter the Netherworld? If it was because of this magic weapon, it would make perfect sense.

However, although he was already sure in his heart, the Ghost King would not ask this question again. Because even if Cheng Yu admits it, he doesn't have any way.

Does he still want to capture Cheng Yu back to the reincarnation ghost king? Stop! He can't protect himself now.

"You guys go in! don't mess things up for me, or you'll know the consequences!" Cheng Yu said to the five ghost kings.

"Yes, master!" the five ghost kings said no more, flew into the black whirlpool, and disappeared in an instant.

As soon as Cheng Yu put his hand away, the black vortex was put away at once, and what appeared in front of him was the three black runes, and then the runes flew back into the Immortal Demon Tower again.

Putting away the Immortal Demon Tower, Cheng Yu was about to get some prey to go back, but saw Xin Yao standing opposite him.

"Senior sister?" Cheng Yu was shocked, he had been thinking about the five ghost kings and the underworld just now, and he didn't even notice that Xin Yao was following him.

Seeing Xin Yao's expression, he knew that everything just now had been seen by her.

"What's going on, why are they still alive?" Xin Yao asked with a cold look at Cheng Yu.

Before, she also saw that Cheng Yu was a little special in suppressing ghost cultivation, but she never asked Cheng Yu carefully. She just thought that Cheng Yu, like her, needed these ghost cultivators to feed the Immortal Demon Tower.

But now, she seems to find that she has everything wrong. Cheng Yu didn't use ghost cultivation as a nourishing magic weapon, but saved them all.

"Senior sister, listen to me, I can explain this matter!" Cheng Yu saw Xin Yao's expression and hurriedly said.

"Okay, then you can explain to me, what the hell is going on?"

"Actually, you're right, none of these ghost cultivators I suppressed are dead, all of them are alive!" Cheng Yu looked at Xin Yao and said.

"Why?"

"Because I want to cultivate an army of ghost cultivators!"

"Ghost Cultivation Army, what use do you want this Ghost Cultivation Army? Do you know what the consequences will be if you do this? If you let others know, you are the common enemy of the human world, and no one can save you, even our Wuji Palace can't protect you!" Xin Yao said sternly.

In the human world, cultivating ghost cultivation is a very evil thing, and only those evil demons and crooked ways will cultivate ghost cultivation. Because the ghost cultivation itself is an extremely evil thing, compared to the Yin Spirit, this Ghost Cultivation is far more powerful than the Yin Spirit.

Like the man in black who ran away before, what he cultivated was a yin soul, and that yin soul was terrifying enough. But Cheng Yu still has to cultivate ghost cultivation, she doesn't want Cheng Yu to end up becoming an evil person like the man in black.

"Senior sister, I naturally know this, but I will never let others find out about this matter. Cheng Yu nodded.

"Didn't I find out then?"

"Isn't this an accident?" Cheng Yu said with a smile.

"You're still laughing?Since this time it's an accident, how can you guarantee that the same accident won't happen again next time?This time it's me, if it's someone else next time, then what will you do?" Xin Yao said angrily.

"Senior sister, this time it was indeed my carelessness, I promise, there will never be a next time. This army of ghost cultivators is very important to me, and it is impossible for me to give up these ghost cultivators!" Cheng Yu said helplessly.

"Could it be that these ghost cultivation armies are more important than your life? Have you ever thought about me or your other women? Do you also want to become like that man in black?" Xin Yao was really angry when she saw Cheng Yu's attitude so firm.

"Senior sister, things are not as you imagined, I am different from the man in black. That man in black is a host cultivator, so he naturally becomes neither human nor ghost, and I, just to improve their cultivation place enough, will not have any impact on me. Cheng Yu explained.

"Do you think I believe it?" Xin Yao didn't believe Cheng Yu's words at all.

The impact of cultivating ghost cultivation is too great, if Cheng Yu ends up becoming like the man in black, she really can't imagine how she will go in the future!

"Senior sister, if you don't believe me, I can take you to have a look. The ghost cultivation I have cultivated is far from being as evil as you think, it can be said that it is the same as cultivating human disciples!" Cheng Yu looked at Xin Yao and said seriously.

"What do you think?"

"You go with you to the Immortal Demon Tower!" Cheng Yu finished speaking, and then took Xin Yao into the ghost cultivation space in the Immortal Demon Tower.

"You...... This...... Why are there so many ghost cultivators?" However, when Cheng Yu's Yuan Shen appeared in this ghost cultivation space with Xin Yao, seeing this dense ghost cultivation, Xin Yao was immediately shocked.

This was beyond her imagination, although Cheng Yu said just now that he wanted to cultivate an army of ghost cultivators, but she never thought that there would be so many ghost cultivators!

"This time, there are more than 100,000 ghost cultivators who have invaded the human world, and there are 80,000 of them suppressed by me, so these are the foundation of my ghost cultivator army!" Cheng Yu said with some pride!