Seeing the four people who were turning the mechanism waiting for them, the atmosphere on the bulge became extremely tense, and everyone's expressions were serious.

Although everyone agreed that Lin Yuhan's method was very good and very likely, no one dared to assert that this was the correct answer before seeing the results, so every time the four of them moved a point, everyone seemed very nervous.

Syllable!

Hearing this voice, everything that followed made everyone stunned at first, and then everyone was overjoyed.

"It's on! That's the answer!" Xinluo shouted excitedly.

It turned out that at the same time as there was a noise, a small square door suddenly opened on the ground where they thought there was no trace in the center. The small door split into four pieces and contracted to all sides at the same time, and then something rose from the inside and appeared in front of everyone.

"Spirit crystal, is this the thing under the boss?" everyone said in surprise when they saw that there was a piece of spirit crystal on top of the thing that appeared.

"This seems to be a formation!" Cheng Yu looked at this thing, but there were various formations drawn on it, obviously, this was a small formation.

"That's right, it's indeed a formation, look at this card slot, it's the same as the one with spirit crystals on the card here. If I'm guessing correctly, this should also be the slot where the spirit crystals are placed!" Xin Yun said, pointing to an empty slot on top of this small formation.

"It must be like this, as long as you put the spirit crystal into this empty slot, you can activate this formation, maybe there will be a way to get to the bottom!" Xinluo said excitedly.

It was the biggest discovery they've found in so long. Moreover, this thing is useful at first glance, not some useless discovery.

How could he not be thrilled to finally find his way to the abyss below, and it was so frustrating to be on this little platform for so long.

"Senior Brother Yu, don't you also have a spirit crystal, you quickly take out a piece of spirit crystal to open the formation. I don't want to be here for a moment, I really want to get out of this place and get some fresh air outside. Xinhai couldn't wait.

Cheng Yu nodded and didn't say much, he had obtained several huge spirit crystals in Huo Yu's lair. In addition, the spirit crystal veins in his mountain and river diagram can also produce spirit crystals, so their luck is indeed quite good.

If this formation requires other energy bodies, it will really be finished. Of course, in the cultivation realm, the spirit crystal itself is a very rare thing, so these builders may also think that using such a thing as an energy body can stump many people.

Because even if it is a spirit crystal vein, it is very difficult to produce a spirit crystal, not to mention, it is difficult for normal people to even see the spirit vein, let alone the spirit crystal vein.

And it is very difficult to get the spirit crystal vein to produce spirit crystals. Therefore, they will use spirit crystals to make energy bodies, and I believe that many people will not be able to pass through here.

In the cultivation realm, the most ordinary energy body is the spirit stone, but this kind of thing is believed to be possessed by a monk. Especially those who can break into this place, I believe that the strength is already very good.

Therefore, it is not difficult to come up with some high-grade spirit stones.

Perhaps, they also thought about using other rare power crystals, but they might not have too many of them themselves. In this case, if they want to come in in the future, they will not have enough spars to activate this formation.

And the spirit crystal may happen to be the one they themselves have the most, so that they can not only stop others, but also allow themselves to open the formation at any time.

But they were afraid that they would never have thought that the spirit crystal, which was very rare for others, was nothing to Cheng Yu.

He has a large number of spirit crystals, and they can choose whether they want to be big or small.

Cheng Yu looked at the empty slot, found a piece of spirit crystal of the right size and carefully put it into the empty slot, his mood was also a little excited, and at the same time, he was very looking forward to the way of life that they had been looking for in their hearts.

The others were also excited when they stood behind, they seemed to have seen the hope of life, and the road to life was just around the corner.

"Well, why hasn't there been a reaction yet?" However, after a long time, there was still no imaginary picture appearing, which made everyone puzzled.

"It can't be that something is wrong, right?" said Xinluo with some anxiety.

Everyone was expecting a miracle here, but the miracle didn't happen, and they seemed to have a new problem.

"No, it's already like this, is there something else going on?"

"Could it be that this formation is an incomplete formation at all, and we need to perfect this formation first?" Xin Yao asked.

"It's not impossible, I'll check it out first!" Cheng Yu nodded and said.

After he had studied the formation in the Immortal Demon Tower for so long, such a small formation was not very complicated for Cheng Yu. In his Immortal Demon Tower, several formations he had mastered now were much more complicated than this formation.

Therefore, it was relatively easy for him to check the integrity of this formation.

Everyone saw that Cheng Yu was carefully checking the formation, and they didn't bother him, but they were extremely depressed in their hearts.

They worked hard to make such a major discovery, but they got stuck again at the last critical moment, which really made people feel bad.

"Can you Senior Brother Yu find out the integrity of this formation? He doesn't seem to know this formation, and he can't see it if it's complete, right? Moreover, as far as I know, unless it's a formation master, it's difficult to see the problem with the formation you encounter for the first time. What's more, if these guys deliberately embarrass us, he will definitely do tricks in the most difficult places in the formation, which makes it even more difficult to see the problem. Xinhai said with some concern.

"If that's the case, it's really troublesome, these guys shouldn't be so vicious, right?" Hearing Xinhai say this, Xinluo was also a little worried.

"It's hard to say, you think about it, since we entered the Skyyang Domain, which trouble will be a simple trouble?

Since they have such thoughts, it is very common for them to do something with this formation. Maybe there is more than one place where this formation has problems, and if you don't make this formation, it won't work at all!"

"It's impossible, if it can't be used, then what if they want to go down by themselves?" Although it may be a little difficult to find out where the problem with this formation is, this formation must be usable, and it is impossible for them not to leave a way out for themselves!" Xinhe shook his head and said.