Xu Yang laughed at himself and stopped looking for the secret that even the Xuan Emperor master had not found, so he didn't think he could find it.

"According to rumors, each of these shelters has a stone slab full of runes, which is said to be the secret keys of the following layers."

Xing Yixiong took out a stone slab that was square foot away. The symbols on it were ancient and vicissitudes, and seemed to contain powerful power.

Xu Yang took the stone slab and observed the runes on it. He found that many of the runes were more or less incomplete, which made him very puzzled.

"Has no one taken this stone slab ever taken away?" Xu Yang looked at the members of the Demon Slayer. He did not think that these people could preserve a treasure containing mysterious value. It was not that they were not powerful, but that the strong men coming and going to the Demon Abyss were too powerful, and there were many kings and princes.

"It's useless, the secret key cannot leave the scope of the shelter," said Xing Yixiong. "Once the carrier leaves the shelter, the secret key will automatically disappear and return to the shelter."

Xu Yang secretly praised him. He held the stone slab in his hand and walked out of the stone platform.

Suddenly, Xu Yang clenched his hand subconsciously, but squeezed it out. He looked down and saw that the secret key of the stone slab had disappeared without a trace.

Xu Yang walked back, but found that the stone slab was erected at the door of a stone house in front.

"Okay, it's really interesting," Xu Yang smiled slightly, "this secret key will disappear automatically..."

Suddenly, a flash of inspiration flashed in Xu Yang's mind, and he thought of a question: "No... Why did the black-robed Xuan King come to ask for the secret key? Don't he know that the secret key will disappear after leaving the shelter?"

"In other words, he must have a way to take away this secret key!" Xu Yang was excited and began to check the storage bracelet of the Black Robe Xuan King.

There are not many items in this storage bracelet, only a string of bone-tooth bracelets that emit light and a leather mask covered with dried blood. The remaining things are nothing more than some unknown materials, black stones and other objects.

Xu Yang was a little disappointed. He thought about it and began to check the storage ring left by Ge Baicheng, the leader of the Wolf Club.

Ge Baicheng led a group of wolves to wander in the second floor of the Demon Abyss for many years. He was indeed quite wealthy. Xu Yang poured out the things in them, most of which were materials collected by ferocious beasts, and piled up into a hill.

“Wow…”

The members of the Demon Slaying Society were amazed, they were also regular visitors to the Demon Abyss. But they had never seen so many valuable materials.

There are two most precious materials. One of them is precious blood. The aura is brilliant and powerful, and the remaining power is intimidating. You don’t need to open it. You can tell that it is at least left by monster-level monsters. The other one is a dragon tendon. Judging from its length and thickness, this dragon tendon is probably from a giant dragon hundreds of feet long.

Xu Yang also bought a dragon tendon on Jinsuo Island on Wuliang Sea. Compared with this dragon tendon, it is simply a big witch and the gap is huge.

The dragon tendons can be used to refine mysterious weapons, especially treasure bows, which are very precious.

These two materials were taken by Xu Yang. He continued to search and quickly found dozens of stone slabs.

With a thud, Xu Yang poured out dozens of stone slabs at the same time.

"This... these are dozens of 'secret keys'? The secret keys from other shelters!" Xing Yixiong almost bit his tongue, "How is this possible? Can the secret keys of other shelters be taken out of the shelter?"

Xu Yang turned over a stone slab and found that behind the stone slab, there was a strange rune drawn with blood.

Turning over the other stone slabs, Xu Yang also saw the runes drawn in blood, exactly the same.

Almost everyone came over, and even the fool could see the unusualness of this blood rune.

"Is it this blood rune that cracks the secret key and cannot bring out the shelter?" Nan Wutie, who has always been honest, couldn't help but speak.

"It's very likely." Xu Yang sat cross-legged, and he began to replicate the blood rune and analyze its structure.

Replicating runes and drawing runes is not just a simple resemblance. You should also pay attention to the connection between different turning points and the attachment of mental power.

Fortunately, this rune is not too mysterious. Xu Yang deduced it for a moment and then figured out its structure. This blood rune seems to have an inexplicable hidden suppression effect.

Next, Xu Yang transformed a needle into a mysterious force, pierced his fingertips, and began to draw runes on the stone slab where the Demon Society sheltered.

After a while, the runes were drawn.

"Try it now... maybe you can take it out. It seems that the master of Xuan Wang from the Nether Clan is prepared to collect these so-called secret keys." Xu Yang handed the stone slab to Nan Zitong and said.

Nan Zitong took the stone slab and took two steps out, and had already arrived outside the stone platform. He stared at the stone slab in his hand and suddenly shouted: "No... it did not disappear automatically!"

Everyone felt extremely strange. They had seen the magic of this secret key, and they all tried it with the mentality of the game. They personally tried it many times. Every time the secret key disappeared mysteriously and returned to the shelter. However, after Xu Yang drew this blood rune, it lost its magic and did not return.

"There are a lot of stone slabs here, so why not splice them together and check if there is anything special." Xu Yang said.

"It should be useless..." Xing Yixiong said, "There was an experiment before. He copied all the broken runes engraved on the secret key, trying to splice them, intending to discover the secrets contained in the secret key. But the final result was still messy and many runes could not be continued."

Xu Yang smiled. It would be fine to fight with stone slabs anyway.

There are numbers for each layer of the Demon Abyss on the stone slabs. So Xu Yang spliced ​​all the secret keys of these stone slabs according to the number.

"There are 29 stone slabs in total." After the final splicing was completed, Nan Zigong counted.

What disappointed Xu Yang was that these stone slabs were spliced ​​together and could not find any secrets, and the broken runes on them could not be connected in one at all.

"Hi, maybe there is no secret to the stone slab key." Nan Zitong said.

"If there is no secret, then the mysterious Xuan King, what should I do to collect these secret keys?" Nan Wutie asked back, immediately asking his brother down.

Xu Yang also agreed with Nan Wutie's point of view, and he smiled: "Maybe it's because of incomplete stone slabs."

Xing Yixiong thought for a moment and said, "Mr. Xu Yang, why not take away the stone slabs of our shelter."

"Hmm?" Xu Yang did have this idea, but before he could speak, Xing Yixiong took the initiative to bring it up, which was quite aware of the situation.

"It's useless for us to keep this stone slab, and it will attract the attention of the mysterious powerful men of the Underworld, which will have many harms but no benefits." Xing Yixiong said the reason. (To be continued...)
Chapter completed!