Everyone was chatting quietly on the side, but this time everyone's topic was no longer about this formation, but they were all looking forward to what treasures they could find below after opening the formation, or to see what the sealed thing was.

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Cheng Yu, on the other hand, sat selflessly in front of the formation and polished the spirit crystal. He needed to constantly modify the spirit crystal according to the appearance of the empty slot. If it was polished properly, he would show a satisfied smile. If it was polished incorrectly, he would

Will frown.

Several women see that every time a problem arises, Cheng Yu needs to be solved. Seeing Cheng Yu's concentration, they always feel sorry for Cheng Yu. But there is no way. The greater the ability, the greater the responsibility. This has always been the case.

The pride in their hearts.

Whether it's checking the formation or polishing the spiritual crystal, it's a meticulous job. You can't be sloppy, otherwise all your efforts may be wasted.

Sweat flowed down Cheng Yu's cheeks, and several women wiped the sweat carefully for him, with distressed expressions on their faces.

"Don't be so anxious, we can wait slowly!" Yao Na wiped Cheng Yu's sweat and said gently.

"It's okay, this little thing is not difficult for me!" Cheng Yu smiled at Yao Na and continued to polish the spiritual crystal seriously.

After more than three hours, Cheng Yu created a suitable spiritual crystal according to the shape of the empty slot.

"I'm not sure if this spiritual crystal will work. I've worked very hard to polish it according to the shape of the empty slot. I hope it can succeed in one go!" Cheng Yu took the crafted spiritual crystal and prepared to place it in the empty slot.

, I was also very nervous.

Others also looked at Cheng Yu's movements nervously, hoping that the spiritual crystal that had taken so long to create could successfully activate this formation.

Click!

When Cheng Yu pressed down the spiritual crystal, everyone clearly heard the sound of the spiritual crystal getting stuck in the slot.

"It should be okay this time!" Everyone felt that their hearts were about to jump into their throats.

However, what was disappointing was that after waiting for a while, no other reaction was seen.

"Failed?" Everyone said in disappointment.

Even Cheng Yu showed extreme disappointment at this time. He spent so much effort to polish such a piece of spiritual crystal, but he didn't expect that the final result would not fail.

"It seems that it has indeed failed. It has been so long and there is still no response!" Xinhe shook his head and said helplessly.

"What should we do now? Is this a problem with the spiritual crystals or something else? Is the exit really down there, and those guys took away the two spiritual crystals below when they went out?" Xinhai guessed.

"Master, I think there is something wrong with your spiritual crystal!" At this time, the Black Demon stood up and said.

"What should I say?" Cheng Yu looked at the other person and said.

"Although Master, your spiritual crystal was polished according to this empty slot, the structure inside this empty slot is not ordinary and can be said to be a bit complicated. It is definitely easy for you to make mistakes if you polish it like this. I think Master, you should polish it

It would be more reliable to take out this piece of spiritual crystal and then copy it according to this piece of spiritual crystal!" Black Demon said, pointing to the port of spiritual crystal that was originally stuck in the slot.

"Yes, Junior Brother Yu, you might as well take off this piece of spiritual crystal and polish it. It will definitely work!" Xinhai said, patting his thigh.

Without any comparison, it would be much easier to make mistakes if you just roughly polish it according to the shape of the groove.

"But if this piece of spiritual crystal is removed, this piece of spiritual crystal will be useless. If this slot is different from this slot here, wouldn't it mean that this piece of spiritual crystal will also be destroyed?" Cheng Yu

He said with some hesitation.

"If we can create the correct spiritual crystal based on this spiritual crystal, then even if this spiritual crystal has expired, we can still copy it. At most, it will only be a waste of time and a spiritual crystal!" Black Demon said.

"Okay, then I will take off this piece of spiritual crystal and take a look. I hope the two slots are the same!" Cheng Yu thought about it. Anyway, after taking off this piece, even if it fails, he can still do it.

Make an exact copy of this spiritual crystal.

In case it is not used here, it turns out that this slot can still be used.

Snap!

Cheng Yu took off the spiritual crystal at once, and clearly felt that the color of the spiritual crystal turned white after being taken off, and it no longer had the unique luster of the spiritual crystal. This showed that the spiritual crystal had indeed failed.

.

Then Cheng Yu took off the one he had polished before, and then carefully compared the two empty slots, and a look of surprise suddenly appeared on his face.

"Great, these two empty slots are indeed the same. Now I should just copy this spiritual crystal into two pieces!" Cheng Yu said happily after seeing the result.

"It scares me to death. I'm really afraid that these two empty slots are different, otherwise I will waste a lot of time!" Seeing this result, everyone finally showed a smile after being nervous and depressed.

"Now that we have the template, we have to polish a few pieces of spiritual crystals to get them out. If there is no exit below, even if we get down there, we still need to use the spiritual crystals to open the formation leading to the top." Cheng Yu thought for a while.

said.

"Well, in that case, let's help you polish some spiritual crystals. It will be faster. Anyway, we already have a template." Xinhe said.

"Master, we can also help you polish one!" Black Demon and White Demon also said.

"Well, it should be almost enough for the four of us to polish four spiritual crystals. We will use two here and leave two for backup below!" Cheng Yu nodded and said.

So, the four people began to compare and imitate the original version of the spirit crystal. Cheng Yu compared the original version with the spirit crystal that he had polished before, and found that the spirit crystal that he polished based on the empty slot was much less.

Something less.

Now that they have the template, the four people can create the spirit crystal much faster than Cheng Yu's previous exploration on his own. The speed has at least doubled, but even so, it still took the four people more than an hour to polish the spirit crystal.

"It's finally done. There should be no problems this time!" When the four people finished, looking at the four spiritual crystals that were exactly the same as the template, everyone's confidence increased greatly. They believed that they would be able to successfully activate the formation this time.

.

Cheng Yu first put one of the spiritual crystals back into the slot where the spiritual crystal was originally. There was no reaction except for the sound of the crystal being inserted into the slot, because it was obviously turned on.

If the formation is from bottom to top, there must be an empty slot below connected to the formation.

And when Cheng Yu was about to insert another piece of spiritual crystal into the slot to open the formation leading below, everyone became nervous again and kept praying in their hearts. They had spent too much time and energy here.

But they can't fail again, otherwise they really don't know what to do!

Snap!
Chapter completed!