"It's really a beast soul stone. Caidie pondered for a moment and explained, "No, it should be the Space Stone." Inside, I didn't feel any monster breath. ”

"Because, the demon beast aura that was originally sealed has completely gotten rid of the shackles of the space stone, and it has merged with the lizard-like demon beast aura on the ground. Fang Tiannan said, "It is precisely for this reason that we may not be attacked in this underground palace." Otherwise,......"

Fang Tiannan smashed the corners of his mouth and muttered, "A demon clan cemetery with its own 'divine sense', especially a demon clan cemetery with late-stage strength of the seventh order, not everyone can enter it safely!"

"Then what is the purpose of showing me this space stone?" Caidie asked with some curiosity.

"Just to make sure if this is a space stone. Fang Tiannan thought about it and said, "Before, all of our discussions, although they seemed to be very reasonable, did not have any factual basis, so with the existence of this space stone, I think, we can roughly believe that all our previous speculations have been made." ”

"Uh,......" Caidie paused and muttered, "I really didn't see it, your style is quite rigorous." ”

"After all, it's an unfamiliar place, if we don't have the slightest understanding at all, even if our speculation is perfect, what's the use?" Fang Tiannan pondered and said, "Next, let's look for what else is special in this underground palace." ”

"You mean, the corpse of the demon clan's predecessors?" Caidie was stunned. Immediately, he suddenly pursed his lips and smiled, and said, "How many years have passed, even if you want to find it, you can't find it,......"

"Not necessarily. Fang Tiannan glanced at Caidie and said meaningfully.

Although, in the pitch-black environment, Cai Die couldn't see Fang Tiannan's expression at all. But. From the tone of his voice, Caidie could still feel that Fang Tiannan seemed to be in a much happier mood at this moment.

Subconsciously. Rainbow butterflies also feel it. Even in the underground palace. The worry in my heart has also been sharply reduced......

Fang Tiannan was almost along the walls of the underground palace, putting the entire underground space. I've explored it all!

Immediately afterwards, Fang Tiannan urged his own spatial power, and in the entire underground palace, he kept trying to conflict, as if he could break through the defense of this underground palace with the pure power of space.

"I said, you shouldn't be energetic and have no place to vent, right?" After Fang Tiannan started to investigate, Caidie stood in a corner of the underground palace.

Fang Tiannan didn't have any opinion on this.

However, when he suddenly heard Caidie's words, Fang Tiannan raised his head and said in the direction where the other party was: "If you still have leisure and leisure, you might as well do me a small favor, how about it?"

"You say. Caidie replied very generously.

"It's to find out all this thing in this palace. As he spoke, Fang Tiannan threw out a piece of something in the direction where Caidie was standing.

Even in the pitch-black environment, Fang Tiannan and Caidie couldn't see each other, but there was something passing through the air, and the movement brought by it still couldn't escape the induction of the two. Subconsciously, Caidie took the things that Fang Tiannan threw over and took them in his hands.

"This is?" Caidie was obviously stunned.

"I don't know what it is, but when I was leaning against the wall and looking for it, I found that there would be something like this at a certain distance. Fang Tiannan explained, "I was curious for a while, so I picked it up and checked it, and found that there was a special energy on it. It's hard to spot if you don't hold it in your hand. ”

"This should be the cornerstone of the formation!" Caidie said uncertainly when she heard this.

"Do you know?" Fang Tiannan's eyes lit up and said, "That's better, you help find all these stones first, and then, let's see if we take out these stones, will the defense of this palace be so strong." ”

"It's not that I know it, but according to the information I loaded from the classics of the demon clan, this kind of stone is the cornerstone used to set up the formation in ancient times. Caidie explained, "Almost any formation master will use this kind of stone when setting up a formation. ”

"Oh?" Fang Tiannan said playfully, "Then the formation of your Demon Clan's Holy Land, as well as the formation around the cemetery, also uses this kind of stone as the cornerstone?"

"Why do you ask so clearly?" Caidie said angrily, "However, even if you know the Tao, it is useless, because, in addition to the cornerstone of the formation, you should know that any formation has a magic eye, right?"

"If you can't find the magic eye of the formation, can't you break this formation?" Fang Tiannan asked.

"Unless, you can take out all the formation cornerstones and destroy them, otherwise, the formed formation has been formed, and there will be a steady stream of strength to maintain the operation of this formation, even if you destroy some of the formation cornerstones, there is no big obstacle to this formation. It's nothing more than the time that the formation runs, and it may not last long because of your destruction. ......" Butterfly continued to explain.

"Isn't that right?" Fang Tiannan was a little strange, looking at Cai Die, "As long as this formation doesn't run for long, we can wait for this formation to stop for a while, and then consider a way to get out, right?"

"The so-called short time here is relative to the existence time of the formation. Cai Die was not as optimistic as Fang Tiannan, "Do you think that a formation that has been running since ancient times, even if it is 'not a long time', is something we can wait for? Besides, the more powerful the formation, the more formation cornerstones need to be used." Like the formation in the underground palace where we are now, I think, without hundreds or thousands of formation cornerstones, there is no way to urge it. ”

For a while, Fang Tiannan was a little interested in his discovery......

Fang Tiannan walked around the wall of the underground palace, but he didn't find more than a dozen formation cornerstones, so forget it, at least, Fang Tiannan still found something, didn't he?

However, compared to the number of formation cornerstones contained in the entire formation that Cai Die had speculated, what Fang Tiannan had found so far was really too few.

Even, Fang Tiannan also thought that not all the foundation stones of the formation would appear within the scope of the formation. To put it bluntly, according to the number of formation cornerstones and the arrangement of the formation cornerstones in the underground palace, it is obvious that there are still some formation cornerstones outside this underground palace!

At this moment, Fang Tiannan couldn't even get out of the periphery of the underground palace.

Unless it was Fang Tiannan who had destroyed the formation that shrouded this underground palace in advance, otherwise, it would only be delusional to find all the formation cornerstones. However, what was the reason why Fang Tiannan had to find so many formation cornerstones?

Fang Tiannan pondered, what was placed in front of him was undoubtedly an impossible task!

And as Fang Tiannan and Caidie both quieted down, in this dark underground palace, Fang Tiannan could almost hear his heartbeat!

"Could it really be that you can only sit here and wait for death?" The thoughts in Fang Tiannan's mind were running rapidly. It's just that in this case, you have to rely on the rescue of the woman in green and others on the ground. Not to mention for the time being, how much time does it take for the woman in green and others to carefully excavate the existence of this underground palace, and what kind of way will the woman in green and others do in the face of the formation that envelops this underground palace?

Fang Tiannan pondered, he and Caidie were now like they had entered a closed cage.

The people outside can't get in, and the people inside can't get out!

Subconsciously, Fang Tiannan returned to Caidie's side. In any case, Fang Tiannan was not alone, he was in an underground palace. With Caidie's company, Fang Tiannan can at least find someone who can talk and chat, solve the doubts in his heart, and pass the time.

"I said, you won't just give up, just sit on the ground and meditate and breathe, right?" Caidie looked at Fang Tiannan's actions and said with some puzzlement, "This doesn't seem to be your style." ”

"Then what is my style?" Fang Tiannan asked angrily.

"Keep holding on and don't give up. Butterfly blinked and said, "Didn't you always do this before?"

"But, as you can see, it doesn't work at all. Fang Tiannan spread his hands and said, "Instead of working in vain, it's better to adjust your state." Besides, what's the use of me working alone, anyway, I can see it, here, isn't there still you,......"

"What do you mean, do you think I didn't work hard?" Caidie was not annoyed when she heard this, but looked relaxed and freehand, and said, "I can tell you, just in the time you are busy, I have already thought of a good solution." ”

"Oh?" Fang Tiannan looked at Caidie's gaze, full of suspicion, "Then I need to take a break, and then, it's up to you to do it." ”

(To be continued......)