Everyone was blocked outside and could not go in, while Cheng Yu started to arrange the formation alone inside.

Although there are only four runes in the Dayan inheritance training formation, the formation is quite complicated. Cheng Yu thought about it carefully before starting to do it.

Because the cultivators in this formation will absorb a large amount of spiritual energy when they break through, the formation itself can also gather spiritual energy, which is equivalent to the function of a spirit gathering array.

However, in order to allow this formation to improve the realm of more people at the same time, Cheng Yu also planned to set up another ancient spirit gathering formation to gather more spiritual energy.

The Thirty-Six Peaks were originally a spirit-locking and spirit-gathering formation, and Cheng Yu had deployed ancient spirit-gathering formations everywhere on the fourteen peaks of the Cheng family in the past few months, so the aura of the Cheng family can be said to be very strong.

Now Cheng Yu is going to set up a spirit gathering array on the Cheng family's training tower, and is planning to place a spiritual crystal in the eye of this ancient spirit gathering array.

This spiritual crystal originally appeared with Huo Yu on the Misty Island in the Death Forest. He only used these spiritual crystals to create a set of goddess accessories for each of his women.

There are a total of seven spiritual crystals in his hand, each one is very huge, especially the large spiritual crystal in the middle surrounded by six small spiritual crystals. It is so huge that it almost stands as big as a building.

Therefore, the six originally huge spiritual crystals appeared very small in front of it, but in fact, just such a small spiritual crystal was already very large.

Cheng Yu was actually very curious about this. There were so many strange things about the holy city. Such large spiritual crystals were very rare even in the fairy world.

But Cheng Yu didn't think about it and didn't care. The Holy City controlled the world's resources at the time, so being able to possess such a large spiritual crystal shouldn't be anything!

Of course, Cheng Yu couldn't put all the smaller spirit crystals here to make the eyes of the ancient spirit gathering array. Instead, he took a piece of spirit crystal as big as a fist from above.

Even though this spiritual crystal is only as big as a fist, the spiritual energy contained in it can be described as massive, and the spiritual energy in this spiritual crystal is very pure.

With such a piece of spiritual crystal as the formation eye, even if the ninth floor is crowded with people, the spiritual energy contained in this spiritual crystal is enough for them to break through together, and it is absolutely impossible for them to absorb the spiritual energy inside.

over.

In addition, when no one comes in to practice, this ancient spirit gathering array continuously absorbs spiritual energy, most of which will be absorbed by the spiritual crystals.

Only when someone comes to practice, this spiritual crystal will release spiritual energy. In this case, the spiritual energy contained in this spiritual crystal will never be exhausted.

Although the ancient spirit gathering array is nothing new to Cheng Yu, he still needs to spend some effort to deploy such an improved and upgraded version of the ancient spirit gathering array.

In particular, this piece of spirit crystal is of great value, and anyone who sees it will probably become greedy. So after Cheng Yu spent half a day setting up the ancient spirit gathering array, Cheng Yu then began to set up the Dayan inheritance training array.

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Compared with the ancient spirit-gathering formation, this Dayan inheritance cultivation formation can be considered a truly top-notch formation. Anyone who can create such a magical formation is definitely a true formation wizard.

At least in Cheng Yu's opinion, except for the old man of Tianzhen, there is no other formation master in the world who has such ability.

Therefore, even if he already had the formation diagram, it was still quite difficult for Cheng Yu to arrange it. It took him more than ten days to arrange the formation.

"Masterpiece! This is the truly great masterpiece!" Cheng Yu said excitedly when he saw the formation he completed.

The completion of this formation also marks that from now on, even if he is not in the Cheng family, Cheng family disciples can use this formation to improve their realm and cultivation.

Although this seemed to reduce the family disciples' dependence on him, he believed that his prestige in the Cheng family would never be reduced.

Because in order to hide the array eye spirit crystals of the ancient spirit gathering array, they specially arranged several illusion arrays.

After the magic array was set up, Cheng Yu was very satisfied with what he saw, because if Xinhe and the others came in to take a look at this time, they would definitely be surprised. Isn't this the Fairy and Demon Tower?

It turns out that Cheng Yu arranged the scene of the Immortal and Demonic Tower in the illusion array. In this way, no one who has been brought to the Immortal and Demonic Tower by Cheng Yu to improve their realm will doubt the authenticity of this place.

Others don't know that when he was here to help people improve their cultivation, he actually entered another dimension, so they always thought that they made a breakthrough here.

In this way, everyone will always think that from the beginning, their formation is the one arranged by their family leader.

"Now that the formation is complete, I wonder how the effect of this formation will compare with the effect of the training formation in the Fairy and Demon Tower?" When everything was ready, Cheng Yu's only worry was the effect of this formation.

After all, this is his first time setting it up. Although the formation has been completed, it is a replica after all. The only way to determine the effect is to find someone to try it!

Therefore, Cheng Yu, who was so impatient that he had to wait for something to happen immediately, rushed out immediately.

But as soon as I walked out, I was shocked by the person in front of me!

"What are you doing?" Cheng Yu said speechlessly when he saw the group of people in front of him.

"Junior brother Yu, you finally came out. Tell us, what are you doing inside?" Xinhai looked inside curiously, but didn't see anything strange, and he was very confused.

"What can I do, but you, don't tell me that you have been staying here since I came in?" Cheng Yu said angrily.

"Haha, aren't we curious about what new things you have come up with?" Xinluo also laughed.

"I'm going to disappoint you. I'm just meditating in seclusion. What new things can I come up with?" Cheng Yu really had nothing to say to these people. There really wasn't any secret to doing something by himself.

Fortunately, I had already greeted the guards, otherwise they would have discovered all my little secrets.

"You four, come in with us!" Cheng Yu looked at the four guards outside the door and said to them.

The four guards looked at each other, wondering what the owner of the house wanted to do all of a sudden. But the owner of the house had already spoken. Although they were curious, they did not dare to ask more questions and followed him directly inside.

"Oh! Just stay here and wait for us to come out!" Cheng Yu was about to close the door, but when he saw Xinluo and the others also coming in, he blocked them directly.
Chapter completed!