Although the voice disappeared, Jiang Liu continued to sit there cross-legged, recalling the sound he heard twice, and imprinted the scriptures and meanings in his mind clearly, and then he opened his eyes.

Yuan Qing's face suddenly met Jiang Liu's eyes, her originally delicate face, just a cursory wipe, still like a little cat.

Yuan Qing looked at Jiang Liu with a surprised expression:

"You heard it too, didn't you? It seems to be a sermon, but I can't hear it clearly, are you like that? It's amazing!"

When Yuan Qing said this, Jiang Liu couldn't admit that he could hear it, and said perfunctorily with a smile:

"It's indeed the voice of the scriptures, magical, amazing!"

Jiang Liu didn't know how the Canghai Sword Saint did it, and he didn't know why he could hear it clearly, but Yuan Qing couldn't.

Jiang Liu asked Xiao Zheng, and Xiao Zheng explained that the spiritual power of the Canghai Sword Saint when he was lecturing resided here, and under certain conditions, it would be activated.

As for why only he could hear clearly, Xiao Zheng was talking about the spiritual channel or something, anyway, Jiang Liu felt that it was very mysterious, and he couldn't understand it for a while, so he didn't delve into it anymore.

The question now is how to get out of here.

Jiang Liu and Yuan Qing both turned around in this cave several times, but they didn't find any other entrances and exits except for the entrance of the cave they had just entered.

However, Jiang Liu felt that if this was really the former preaching dojo of the Canghai Sword Saint, it should never be so simple.

Assuming that the entrance of the cave where the swamp poisonous dragon came in was the original gate of the Canghai Sword Saint Dojo, the cave in front of it was similar to a hall, and the cave where it was now located was obviously a pulpit.

Jiang Liu didn't believe that there would only be two caves in the Canghai Sword Saint's preaching dojo, so where was the place where the Canghai Sword Saint practiced and lived?

Jiang Liu decided to look more carefully, and if he really couldn't find another way out, Jiang Liu planned to go back to the cave before and carve an exit above the hole where the swamp poison dragon had entered.

At this time, Yuan Qing suddenly shouted:

"Jiang Liu, come and see, why is there a stone wall in front, but here it is so smooth?"

Jiang Liu came to Yuan Qing's side, and when he saw for himself, the stone surface under his feet was very smooth, obviously the traces left by people who often walked.

But when I looked up, there was a whole stone wall, which was the same as the stone wall in other places, and there was no obvious sign of connection.

However, Yuan Qing's discovery still gave the two of them hope, and no one would keep walking around a stone wall.

"There must be room for something else to come back on. ”

Regarding Jiang Liu's statement, Yuan Qing nodded, but how to open this space now.

Jiang Liu carefully observed the marks on the ground, and he noticed that the clearest place on the ground was about three feet away from the stone wall, and he could see that this was a place where people often stood.

Jiang Liu stepped on it with both feet, trying to coincide with the clearest part, and even Jiang Liu jumped a few times and stomped a few feet, but the stone wall in front of him was motionless and did not move.

Yuan Qing'e frowned slightly, and said thoughtfully:

"Could it be that there are other mechanisms?"

"According to what you said, the Canghai Sword Saint must be a frank person, and he shouldn't have set up so many Karakuri in his dojo, why do I feel that something is wrong?"

Jiang Liu vaguely felt that something was wrong, but he couldn't think of it all of a sudden, and patted his head hard.

Yuan Qing looked at Jiang Liu's anxious look, and comforted with a smile on the side:

"Don't worry, we have time, besides, if it doesn't work, we'll gamble on our luck and go back the same way. ”

Jiang Liu suddenly exclaimed excitedly:

"Close! Close!"

Yuan Qing didn't know what Jiang Liu was talking about, and stood there looking at him in a daze.

"Why don't you close the door?!"

Jiang Liu called out in shock, Yuan Qing was a little panicked, and said nervously:

"What are you closing? Jiang Liu, are you alright?"

Jiang Liu looked at Yuan Qing, who was nervous, smiled and said:

"Think about it, the predecessor of the Canghai Sword Saint left here, why didn't he close the door of the dojo at that time?"

Yuan Qing hadn't kept up with Jiang Liu's train of thought, and when she heard Jiang Liu ask her, she said with a worried face:

"Could it be that the time is too tight and you forgot it?"

Jiang Liu only vaguely felt that it was more reasonable for the cave door to be closed, whether it was when he was preaching the scriptures, or when all the disciples dispersed and only the Canghai Sword Saint himself was left.

Jiang Liu couldn't explain it all at once, after all, before it was opened, it was just speculation.

"I'll try it first. ”

Jiang Liu searched carefully in the cave, but did not find any mechanism that could be pressed, and used the detection system to search carefully under the swamp at the entrance of the cave.

Sure enough, Jiang Liu found a circular button embedded in the stone wall in the passage into the cave, which was on the right side of a flat ground in the middle of the two staircases.

However, the button is under the swamp, and if you press the button, you can only dive into the swamp.

"You're waiting here. ”

Jiang Liu told Yuan Qing to walk down the swamp, sneaked to the flat ground in the middle of the two stairs, and felt the round button on the stone wall on the right.

Jiang Liu slapped the button, and soon, there was a vibrating sound of the mechanism running on the stone wall.

The river could not open its eyes in the swamp, so it had to retreat into the cave, and soon there was a dull crashing sound in the passage.

At this time, Yuan Qing stood in front of the original stone wall and suddenly shouted:

"It's open, Jiangliu, it's open!"

Jiang Liu looked back, and the stone wall in front of Yuan Qing, which was more than two meters wide, was slowly lifted upward.

Jiang Liu guessed that when the door of the cave was closed, the stone wall in front of him could be opened and closed automatically, and now it seems that he guessed correctly.

As for how to control the switch of the stone wall when the door of the cave is opened, now that the stone wall has been opened, there is no need to explore.

Jiang Liu came to Yuan Qing's side, and a bright space appeared in front of the two, and the two of them walked in with a look of amazement.

Yuan Qing forgot to ask Jiang Liu how he came up with a way to open this space.

Jiang Liu looked at the cave in front of him, the cave was not big, only more than a hundred square meters, but directly opposite a two-meter-square transparent sword qi seal, like a large floor-to-ceiling window, providing plenty of light in the cave.

Jiang Liu didn't know how to use the sword qi to arrange this effect, but he could feel the gentle sword qi on the seal.

On the left and right sides of the transparent sword qi seal, there were two half-human-high flower pots, and the plants planted in them were actually still alive.

The layout of the cave is also very simple, with stone tables and stone benches, several futons, a large wooden bookcase, and a stone platform.

On the stone table, there was a jade book, spread out there, and Yuan Qing walked to the table to look through it.

Jiang Liu also leaned up and saw that the cover read: A Brief History of the Eternal Continent.

This is actually a history book, and there are a few lines of small print engraved on the cover:

The north corner of the Eternal Continent is about to be sealed, and I have compiled this book to stay in the dojo to prove that the place of sealing is one with the Eternal Continent and the same source.

If the seal in this cave is not broken, the spiritual power of the sword soul fruit next to the seal is still there, and eating it can nourish the sword soul.

Yuan Qing looked at the jade book intently, obviously interested in the content of the book, and there were words in her mouth from time to time:

"In the year 3523 of the Three Ages of the Eternal Continent, the Demon Spirit Clan, the Ghost Clan, and the Skeleton Clan jointly invaded the Eternal Continent, and the Heavenly Sword Emperor and the Haoyue Sword Emperor led a total of 100,000 Sword King divisions, which lasted three years, and Fang Ping wiped out the invasion of the three clans.

The Eternal Continent 4th Era 211 ......"

Jiang Liu didn't bother her, quietly walked to the side and sat down, as for the content of the book, wait for Yuan Qing to finish reading it, and let Xiao Zheng scan it.