Entering the back mountain of Meihua Villa, after passing through layers of restrictions, they finally arrived at a cave.
Before entering the cave, Lin Bai looked up and saw three ancient characters "Wangyue Cave" written on it.
The cave is not very big, only about ten square meters. Except for the entrance, the other three sides are stone walls as hard as iron.
After walking into it, Lin Bai just glanced at it and took in the layout and scenery inside. He couldn't help but feel curious, what was he doing here?
Ji Canghai remained silent and took out a jade token from his storage bag. After using the magic formula to sacrifice it, the jade token erupted into bursts of dazzling white light and slowly fell on the stone wall.
Immediately afterwards, hidden runes appeared on the three stone walls and the ground, shining continuously with the light.
"Teleportation array!"
Lin Bai recognized at a glance that this was a teleportation array.
"No, it's not an ordinary teleportation array..." Lin Bai carefully observed the surrounding array patterns and felt strange for a while.
With Lin Bai's current level of cultivation, he was no longer unfamiliar with the teleportation arrays, but the current teleportation arrays made Lin Bai feel that they were different from the current teleportation arrays in the demon world.
"This is the ancient teleportation array!"
"But... this ancient teleportation array is too small. It should not be able to teleport over long distances!"
Lin Bai didn't ask any questions. As the ancient teleportation array slowly rotated, white light flashed and all the warriors in the cave disappeared.
The cave returned to calm again, and there was no trace of Lin Bai, Ji Canghai and others anymore. The teleportation array runes in the cave slowly dimmed, and finally disappeared.
When the dazzling white light of the teleportation array disappeared in front of Lin Bai's eyes, Lin Bai realized that he had appeared in a dark space.
Looking up, most of the surrounding areas are made of stone walls, and there are no wooden buildings.
There was no firelight in the dark space, and the stone walls were inlaid with many luminous stones that emitted a faint light.
There are many sparkling spiritual plants growing on the ground, which also dispel some of the darkness in this space.
"Underground?" Lin Bai was stunned for a moment, and realized later that... they should have teleported into the underground.
And beneath the ground, it should be beneath the mountains of Meihua Villa.
But Lin Bai's words to himself attracted Ji Canghai's attention, and he calmly explained twice.
"It is indeed underground!"
"But it's not just ordinary underground!"
"There is at least a hundred thousand feet between this place and the ground of Meihua Villa, and there is a layer of 'Tiangang Rock', a layer of 'Hongxin Rock', and a layer of 'glazed soil'..."
Hearing Ji Canghai's voice, Lin Bai took a deep breath.
Mixed core rock, glazed soil, and a dozen other strange materials mentioned by Ji Canghai are currently the hardest things in the demon world.
These minerals are extremely special and cannot be used to refine elixirs and weapons. They are usually used by warriors to build cities and fortresses.
Especially the "Tiangang Rock" is known as the hardest rock in the demon world.
It is said that the Imperial City of the Chu State was built with Tiangang Rock. Together with the attainments of the Tianji Pavilion's weapon refiners and array masters, the Imperial City was built into the strongest fortress in the world of demons.
"That's it." Lin Bai nodded with sudden realization: "No wonder Jiuyou Demon Palace would set up a teleportation array to reach here!"
Ji Canghai nodded and said: "That's right, if you don't rely on the teleportation array, it will be difficult for ordinary warriors to penetrate the hardest rocks in the demon world in these dozens of layers!"
Lin Bai narrowed his eyes. The headquarters of Jiuyou Demon Palace was actually built under the ground of Meihua Villa, a hundred thousand feet deep.
It is also separated by dozens of layers of indestructible rocks. If it is built like this, even if it is discovered, this fortress-level place will not be able to be breached for a while.
"It's rare for Jiuyou Demon Palace to find this place." Lin Bai smiled bitterly. Who among the ordinary warriors would go underground a hundred thousand feet deep with nothing to do when they are full.
"We didn't find it." Ji Canghai led everyone out of the teleportation array and said as he walked: "Meihua Villa found it, but this place was not built by Meihua Villa."
Lin Bai was confused by Ji Canghai's words.
Sect Master Mei laughed dryly at this moment and said: "This matter is related to the secret of my Plum Blossom Villa. I shouldn't have told it to Prince Qin originally, but since Prince Qin is interested, it doesn't hurt to say a few more words."
"I wonder if Prince Qin knows...why the territory of All Saints Mountain is called 'All Saints Mountain'?"
Lin Bai shook his head.
Seeing Lin Bai shaking his head, Sect Leader Mei was a little disappointed. Lin Bai actually didn't know anything about it?
He patiently explained: "Then Prince Qin should know where the most relics of powerful people in the demon world are, right?"
Lin Bai smiled and said: "I know a little bit."
"Due to the geographical environment of the Demon Realm, the living environment in the Northern Territory is too harsh, the Southern Territory has high mountains and dense forests filled with filthy gas, and the Western Territory has been in chaos all year round with wars between various countries."
"Only the Eastern Region of the Demon Realm is relatively peaceful, and martial arts are extremely prosperous. Many strong men hope to travel to the Eastern Region of the Demon Realm."
"And after these powerful men arrived in the Eastern Region of the Demon Realm, the places they visited most were the Imperial Capital of Chu State, and then the territory of Wansheng Mountain."
"Because there are rumors that there are countless caves of powerful people buried in the All Saints Mountain territory and relics of ancient times."
Sect Master Mei nodded and said, "Yes, this is the territory of the All Saints Mountain!"
"It is no exaggeration to say...Prince Qin can almost find the caves of some senior masters if he digs hundreds of feet into the ground in the more famous mountains and rivers in the Wansheng Mountain area!"
"This is Halloween Mountain!"
"It is known as the cemetery where gods from ancient times are buried!"
When Sect Master Mei mentioned this, Ji Canghai interjected: "The territory of the demon world was originally part of the spiritual world."
"There was a great war in the spiritual world back then, so that the territory of the demon world broke away from the spiritual world and sank into the void, becoming the demon world today."
"And the core area of that battle was in the Eastern Region of the Demon Realm."
"And the core area within the core area is the territory of Halloween Mountain!"
"So this moment is indeed the cemetery of the strong men in ancient times. In the battle between the spirit world and the demon world, I don't know how many strong men fell on this territory!"
Ji Canghai paused and said to Lin Bai: "Not to mention other things, these are just the secrets and secrets treasured within the territory of Wansheng Mountain. Any book that is spread out can become the inheritance of other top sects!"
"After the Demon Realm sank into the void, the fat piece of meat in the Eastern Region of the Demon Realm also experienced countless years of fighting and fighting."
"For example, the territory of the All Saints Mountain is only a sect that emerged half a million years ago. Even earlier, there were other powerful forces controlling this territory!"
Hearing Ji Canghai talk about the ancient history of the demon world, Lin Bai took a deep breath. Although he had never experienced that battle in person, he could still feel the majesty and earth-shattering power of that battle.