"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 sense any monster aura."

"Because, the originally sealed monster aura has completely escaped from the constraints of the Space Stone and merged with the monster aura of lizards on the ground." Fang Tiannan said, "It is precisely this reason that we may not be attacked in this underground palace. Otherwise,..."

Fang Tiannan smacked the corner of his mouth and muttered, "A demon cemetery with his own 'spiritual sense', especially a demon cemetery with late-stage seventh-level strength, is not something that everyone can safely enter!"

"Then what is the purpose of this space stone?" Caidie asked curiously.

"Just confirm whether this is a stone of space." Fang Tiannan thought about it and said, "Although all our discussions before seemed very reasonable, there was no factual basis. Therefore, with the existence of this stone of space, I think we can roughly believe all our previous speculations."

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

"After all, it's an unfamiliar place. If you don't have any understanding at all, what's the use of even the perfect ones we speculate?" Fang Tiannan thought and said, "Next, let's look for something special in this underground palace."

"You mean, the corpse of the senior of the demon clan?" Caidie was stunned. Then, she suddenly smiled and said, "How many years have passed, even if you want to find it, you can't find it..."

"This is not necessarily true." Fang Tiannan glanced at Caidie and said with some meaning.

Although, in the dark environment, Caidie could not see Fang Tiannan's expression at all. However, from the tone of speaking, Caidie could still feel that Fang Tiannan seemed to be in a much happier mood at this moment.

Subconsciously, Caidie also felt that even in the underground palace, the worry in her heart had dropped sharply.

......

Fang Tiannan almost explored the entire underground space along the walls of the underground palace!

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

"I said, you must be energetic and have no place to vent, right?" Caidie stood in a corner of the underground palace after Fang Tiannan began to investigate.

Fang Tiannan has no opinion on this.

However, after hearing Caidie's words, Fang Tiannan looked up and said in the direction where the other party was, "If you still have leisure time, why not do me a little favor?"

"You said." Caidie responded generously.

"It is to find out all the things in this palace." As he said that, Fang Tiannan threw out a piece of thing in the direction where Caidie was standing.

Even in the dark environment, Fang Tiannan and Caidie could not see each other, but something passed by in the air, and the movements brought by the two could not escape the two of them. Subconsciously, Caidie took the things that Fang Tiannan threw in her hand.

"Is this?" Caidie was obviously stunned.

"I don't know what this is, but when I leaned against the wall and searched, I found that something like this would appear at a certain distance." Fang Tiannan explained, "I was curious for a moment, so I picked it up and checked it. I found that there was a special energy on it. If it weren't for the fact that it was kept in my hand, it would be difficult to find it."

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

"Do you know?" Fang Tiannan's eyes lit up and said, "That would be even better. Please help find all these stones first, and then let's see if these stones are taken out, will the defense of this palace be so powerful?"

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

"Oh?" Fang Tiannan said playfully, "The formations of your demon clan holy land and the formations around the cemetery also use this kind of stone as the cornerstone?"

"What do you do if you ask so clearly?" Caidie said angrily, "But even if you know it, it's useless, because, besides 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 cornerstones of the formation and destroy them, otherwise, the formed formation has been formed and there will be a continuous source of power to maintain the operation of this formation. Even if you destroy some of the cornerstones of the formation, there will be no big obstacles for this formation. It is nothing more than the time when the formation is run, it may not last long because of your destruction..." Caidie continued to explain.

"Isn't that right?" Fang Tiannan looked at Caidie with a little strangeness, "As long as it is this formation, it won't last long, we can wait until the formation stops before considering the way out?"

"The so-called short time here is relative to the existence time of the formation." Caidie is not as optimistic as Fang Tiannan. "Do you think that a formation that has been running since ancient times, even if it is 'not long', can we wait for? Besides, the stronger the formation, the more formation cornerstones you need. Like the formation in the underground palace where we are currently in, I think there is no way to activate it without hundreds of formation cornerstones."

For a moment, Fang Tiannan became a little interested in his discovery.

......

Fang Tiannan wandered around the walls of the underground palace, but he still couldn't find more than a dozen cornerstones of the formation. That's fine, at least, Fang Tiannan still discovered something, right?

However, compared with the number of formation cornerstones contained in the entire formation speculated by Caidie, Fang Tiannan has found too few of them at present.

Fang Tiannan even thought that not all the cornerstones of the formation will appear within the range of the formation. To put it bluntly, Fang Tiannan, based on the number of cornerstones of the formation and the arrangement of cornerstones in the underground palace, obviously some cornerstones of the formation are outside this underground palace!

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

Unless Fang Tiannan destroys the formation that covers this underground palace in advance, if you want to find all the formation cornerstones, you can only have a delusion. However, what is the reason why Fang Tiannan found so many formation cornerstones? Didn’t he go to destroy the formation?

Fang Tiannan thought that what was placed in front of him was undoubtedly an impossible task!

And as Fang Tiannan and Caidie became quiet, in this dark underground palace, Fang Tiannan could almost hear his heartbeat!

"Can you really have to be here and wait for death?" Fang Tiannan's thoughts were running rapidly. However, in this way, he had to rely on the rescue of the woman in green and others on the ground. Not to mention for now, how much time would it take for the woman in green and others to carefully dig into the existence of this underground palace? Facing the formation that enveloped the underground palace, what would the woman in green and others have the same method?

Fang Tiannan thought that he and Caidie were now like they had entered a closed cage.

People outside cannot get in, and people inside cannot get out!

Subconsciously, Fang Tiannan returned to Caidie's side. No matter what, Fang Tiannan was not alone, he was in an underground palace. With Caidie's company, Fang Tiannan could at least find someone who could talk and chat, relieve the doubts in his heart, and spend time.

"I said, you won't give up just like that. Just sit on the ground and meditate and adjust your breathing, right?" Caidie looked at Fang Tiannan's actions and said in confusion, "This doesn't seem to be your style."

"What's my style?" Fang Tiannan asked with annoyed look.

"Always persist, don't give up." Caidie blinked and said, "Didn't you always do this before?"

"But you saw it, it was completely useless." Fang Tiannan spread his hands and said, "It's better to adjust his condition instead of doing it in vain. Besides, what's the use of working hard alone? Anyway, I've seen it too. I still have you here,..."

"What do you mean is that I didn't work hard?" Caidie was not upset when she heard this. Instead, she looked relaxed and freehand, and said, "I'll tell you, just as you were busy, I had already thought of a good idea."

"Oh?" Fang Tiannan looked at Caidie with suspicion, "Then I need a rest. Next, it depends on your methods."
Chapter completed!