At this time, Xu Xian'er took out a pill from the brocade bag she carried with her and ate it, recovering some strength. Then she began to check her surroundings, trying to find a way to break the deadlock.

After taking the pill, the two of them can use a little bit of spiritual energy, but it is only the spiritual energy contained in the pill.

"My spiritual sense is much stronger than yours. You should rest first. I will take a look."

"good."

Lin Tian released his spiritual sense and began to search everything around him, trying to find out what was hidden here, which mountain it was, which formation it was, or some treasure, etc.

The divine consciousness surged out like a tide, spreading outward inch by inch, searching the situation here, but to no avail.

"Strange, no matter what formation it is, it should leave clues, why don't I feel anything?"

Lin Tian frowned deeply. It was too quiet here, so quiet that it was a little scary. Moreover, these caves were a little strange. They looked like...

Thinking of this, an idea arose in his mind.

“Are these connected tombs?”

Lin Tian talked to himself, his heart full of doubts. He didn't know why, but he always felt that something was wrong here, but he couldn't find out what was wrong.

It seemed to be different from what he had imagined. Could it be that his script had changed again? His spiritual consciousness continued to spread outward, and Lin Tian finally found a clue in the crack of a cave.

His spiritual sense extended along those tiny traces and found that there was actually a huge altar there. The altar was surrounded by various bones, all of which were incomplete.

Seeing this scene, Lin Tian's eyes widened in surprise, because he found many corpses of monks that had been chopped into pieces around the altar, including those of humans, monsters, and demon beasts.

This mountain is indeed a tomb, otherwise there wouldn't be so many bones piled up, and so many corpses of monsters.

"What’s wrong with you?"

"This should have been a sect of immortals, but I don't know why everyone inside died. If I'm not mistaken, they all died instantly."

"Moreover, these corpses do not look like young people. They should be cultivators who have practiced for many years. But now they have all turned into white bones, and there are no scars on their bodies..."

"But I think there must have been a war here, which is why these situations occurred. Perhaps these demon beasts and monsters were also involved, so they were killed."

After listening to Lin Tian's narration, Xu Xian'er guessed that she observed the situation here carefully. The more she thought about it, the more she felt that there should be traces of a great battle here.

"Let's not talk about this for now. I found that there is spiritual energy flowing in that cave. Let's go there and try our luck."

Xu Xianer nodded, and then walked towards the cave platform with Xu Xianer.

But after walking for a long time, they still didn't get out. It seemed as if it was very close, but they couldn't get close to it.

"It seems that we can't just walk out. Maybe we need to break some traps."

After thinking for a moment, Lin Tian made a decision. There was no telling how many traps there were in this cave. If he explored it rashly, he would probably die here.

However, the two people without spiritual energy did not notice that in the corner of the cave, several skeletons stood up silently.

His body twisted strangely towards the two of them, his mouth opened, revealing his white teeth, and his eyes flashed with a ferocious cold light.

At this moment, these skeletons seemed to turn into evil spirits, smashing the walls and rushing towards the two of them.

Lin Tian and Xu Xian'er's reaction speed was not slow. Just as they set off, they felt a huge pressure coming.

A series of muffled sounds were heard, and Lin Tian and Xu Xian'er were knocked over by a terrifying shock wave and fell heavily to the ground.

Because they had no spiritual energy to protect them, both of them were seriously injured. Lin Tian, ​​who was holding Xu Xian'er in his arms, even spat out a mouthful of blood.

"Why did so many skeletons suddenly appear?"

Xu Xian'er looked at the skeletons appearing around her and couldn't help but be shocked.

"This should be a sacrificial site, and those skeletons should be the guardians here. It seems that this formation not only blocks this space, but also the entrance to the cave."

"It seems that this is where the center of the formation is."

When Lin Tian saw the scene in front of him, he guessed that this should be the center of the formation.

As for who set up the formation and what it was used for, he was not in the mood to study it now.

Because the skeletons in front of him were so terrifying, and he found that these skeletons all emitted a faint black luster.

“It’s so scary to look at these skeletons without spiritual energy.”

Xu Xian'er was a little panicked because she felt a cold breath emanating here, which made her feel uncomfortable.

"Don't worry, they are just a few skeletons. I will protect you."

Lin Tian said with a smile, but then he coughed up blood, and then he turned his gaze to the skeleton.

For some reason, they seemed to have lost their aggressiveness at this moment.

"Look, those skeletons are holding an iron plate with ancient words written on it. There are also patterns on the iron plate. Are they asking us to guess a riddle?"

Xu Xianer observed it carefully and then said.

"Yes, it seems that the iron plates in the hands of these skeletons should be a puzzle. If we can't guess it right, then we may encounter some troubles."

Lin Tian looked at the iron plates held by the skeletons and found that they were all made of black iron sheets.

Although there were very complicated symbols drawn on it, Lin Tian and Xu Xian'er still recognized the meaning of these symbols, although they didn't know why they could understand them.

But at this time, they couldn't care less and could only try their best to guess the answer.

Lin Tian looked at the skull with his eyes slightly narrowed, and quickly analyzed the meaning of these symbols in his mind. Soon he figured out the answer.

"These symbols should mean 'three', and this thing that looks like 'six' should mean 'seven'."

After analyzing the meaning of these symbols, he immediately told them what they meant.

"Panax! See if there is Panax notoginseng on the pattern on their hands!"

When this answer came out, Xu Xian'er looked at him in surprise, appearing very surprised.

Because she never expected that Lin Tian could analyze the answer from these few simple sentences.

Pointing at the skeleton holding Panax notoginseng grass, in an instant, it and the skeleton in the riddle disappeared together, leaving only a few iron plates on the ground.