Cheng Yu put the two giant death veins into the Immortal Demon Tower, and felt the two death veins through the Immortal Demon Tower, and he was very happy in his heart, now his own ghost cultivation army can cultivate well.

Before, I was worried that there was only one death vein, how to deal with it when the time came, after all, Xin Yao's Yin Sky Mirror also needed death qi to cultivate, and there were still so many ghost cultivators hidden in his Immortal Demon Tower, and these ghost cultivators naturally couldn't let others know.

Therefore, although a death vein was enough for them to cultivate together, they couldn't let Xin Yao and them know about the existence of ghost cultivation, so it was quite troublesome to use it once it was used.

But now, well, he actually got two dead veins here, which just solved his problem. Therefore, Cheng Yu put these two dead veins in different places, one for ghost cultivation and one for Xin Yao.

Cheng Yu's Yuan Shen appeared in the Immortal Demon Tower!

Don't look at the Immortal Demon Tower is just a tower, but it has a huge space, each floor is not as simple as it seems, there are still many independent spaces, and these ghost cultivators have always been placed by Cheng Yu in an independent space on each floor.

"Master!" Seeing Cheng Yu appear, all the ghost cultivators knelt respectfully in front of Cheng Yu.

Back then, when the ghost cultivators invaded the human world, he led Xinhe and them to eliminate a lot of ghost cultivators one after another, and most of those ghost cultivators were robbed of their heads by Cheng Yu, and Xinhe thought that these ghost cultivators were killed by him, but they didn't know that all of these ghost cultivators who were robbed of their heads were actually left by Cheng Yu.

Now there are almost hundreds of ghost cultivators here, and the lowest cultivation of the ghost cultivators who invaded the human world back then was also the ghost guard, that is, the Jindan period, so the minimum cultivation of these ghost cultivators that Cheng Yu accepted was also the Jindan period, especially the ghost three and the ghost wind and the ghost to the three, because they had been with Cheng Yu for the longest time.

He fused the ghost venerable who was caught later, as well as Kunlun's Wu Hongcai and Zhu Zhisheng, with the three of them, so they were both second-level ghost venerables in the middle stage of the merger, and Ghost Wind was the first-level ghost venerable in the early stage of the merger.

As for the rest of the ghost cultivators, they are all ghost envoys and ghost guards.

In the past, Cheng Yu felt that their strength was too low, and there was no way to help them cultivate, but now, with such a large giant death vein, just hundreds of their ghost cultivators, even if they were to be held to death.

"Well, it's embarrassing for you to stay here for so long, but there is no way to help you cultivate!" Cheng Yu said as he looked at so many ghost cultivators.

"Master, it doesn't matter, as long as you catch a few more human masters and fuse us, we will be much faster than we cultivate!"

"Are you so easy to catch as a human master?" Cheng Yu shook his head and said with a smile.

In order to help them improve their strength, he can't go outside every day to catch human masters, he is not so cruel. After all, it was very cruel to let the ghost cultivator merge with the human in this way.

If it weren't for an enemy who had a deep hatred for himself, it would be absolutely impossible for him to deliberately capture humans to merge with ghost cultivators. If you do, you're really going to be a demon.

"Hehe, with the master's strength, it's not enough to catch a few human masters at the level of Ghost Venerable!"

"Okay, it's impossible to catch human masters for you, but I brought you a good thing today, with it, you don't have to worry about no way to cultivate!" Cheng Yu said with a smile.

"Master, what is it?" the ghost cultivators asked curiously.

Although the three ghosts and a few of them have been fused, after all, there are still hundreds of ghost cultivators here, and it is impossible to use this way to improve their strength, so he will have to find hundreds of merge stage masters to kill.

Moreover, they have no way to cultivate, even if they help them become ghost venerables now, but their realm is basically still in this realm, and there is no way to continue to improve, unless Cheng Yu kills stronger human masters, such as the Mahayana period, and then fuses them.

Although this is indeed a rapid increase in strength, it is not a long-term solution after all. Only by allowing them to cultivate on their own can they continuously improve their realm and strength.

Suddenly, Cheng Yu suddenly got one of the dead veins from the other.

Wow!

The ghost cultivators felt the rolling dead air, and suddenly felt that their whole body was comfortable, as if the fish on the shore had suddenly jumped into the water!

"This ...... Is this the Death Vein?" said Ghost San in shock.

"That's right! This is exactly a giant death vein, with it, you can absorb the death qi to your heart's content in the future!" Cheng Yu said with a smile.

"Master, how did you get the vein of death? Did you go back to the underworld?"

Because the death vein only exists in the Yin and Netherworld, just like the spiritual vein of the human world, there is no in the Yin and Netherworld. And this death vein is much better than the yin and evil qi.

For their ghost cultivation, the Yin and Yin Qi is too mild and too weak, and the Yin and Yin Qi is too tyrannical, only this death qi is both powerful and not as violent as the Yin and Yin Qi, and the effect of cultivation is much better than that of the Yin and Yin Qi and the Yin and Yin Qi is the most suitable for ghost cultivation.

However, death veins are rare even in the underworld, so it is impossible for a little ghost cultivator like them to obtain death vein cultivation, and only the ghost king is eligible to obtain death vein cultivation.

Now seeing such a big death vein, and hearing Cheng Yu say that this death vein was prepared for their cultivation, all the ghost cultivators immediately rejoiced.

If this is in the underworld, but only the ghost king can enjoy the resources, now they are with a human, although most of the reason is broken, but there is a dead vein to enjoy, they feel at this moment, it turns out that it is not unjust to follow a human being.

With such a big death vein, their cultivation and realm will definitely improve by leaps and bounds. Even if Cheng Yu didn't find a human master to fuse with them, it didn't matter.

"Do I have to go back to the Netherworld to be able to get the death vein?" Cheng Yu said with a smile.

"Apart from the Netherworld, is there any other place where there is a death vein?" the ghost cultivators said curiously.

In their consciousness, only the netherworld has a dead vein, and there can be no dead vein anywhere else.

"Isn't this already in front of you? the world is so big, how can it be compared to the Netherworld, what the Netherworld has, and other places will naturally have!" Cheng Yu said with a smile.

"Master, so this death vein will be used exclusively for us to cultivate in the future?" said Ghost San excitedly.

Although it was now a second-order ghost venerable, if it wanted to improve its strength again, it would have to wait until Cheng Yu caught a more powerful human master.

But now there are so many low-level ghost cultivators here, even if he catches a powerful human being, Cheng Yu is afraid that he will have to raise those low-level ghost cultivators first.

In this case, it would be even more difficult for it to improve its strength, but it would be different with this death vein, it could completely rely on these death veins to cultivate by itself!