Ten thousand miles of blood crystals, Ji Yunkong's "Tracing Back to the Original" disappeared in less than an hour, and in desperation, they could only continue to hollow out the land, and when the blood crystals under the surface were exposed, they would use the "Tracing Back to the Original" again. As a result, the speed at which they could travel was greatly reduced, and the valley itself was vast, and it would not be so easy to find such a tedious place to make blood crystals.

However, the two of them have time, there is naturally a stream in the valley, and cut a lot of edible wild fruits, otherwise, the two masters will probably starve to death in the valley.

"Here?" The two finally found their destination, and all the "back to the roots" points to one place in the earth. And this place is also different, the blood crystals under the land here are already much better than other places, and nearly 10,000 curse seals can be stored in each blood crystal. Even, the surrounding land, there have been traces of real blood crystals, these natural blood crystals, have been placed in important places, and the spell seal engraved inside is also the most critical part.

"This should be the back side of that mountain." Ji Yunkong fiddled with the purple gold compass in his hand and said categorically: "It seems that the people of 20,000 years ago, in order to facilitate and better control and deal with the trivial matters in the valley, built the place of control very close. ”

"I still don't understand, you say, 20,000 years ago, why did people build such a cage, who are the people who are imprisoned here? Purple gold, Jedi black steel, thousand-year-old dark iron, and countless precious mineral deposits, all used to make blood crystals? Emperor Yan shook her head, at least, she was reluctant to do this.

Ji Yunkong said with a smile: "I don't know who is being held here, but it must be a great power, at least at the level of the top ten masters." Otherwise, it would not have been possible to build a huge cage with tens of thousands of miles of blood crystals. As for the price, you forget that purple gold and other things are extremely precious in the eyes of martial artists, but they are useless for spells. Especially in the glorious era of spells, these things, shaped like scrap metal, seemed to be wasted in the current era, but at that time, it was a great saving on the cost of blood crystals. ”

"And, of course, the most important thing." Ji Yunkong's eyes suddenly changed.

"Look here," he said, pointing to the bright red pieces of natural blood crystals around him, "Most of the formations engraved here are necessities of life and defensive spells. For example, spells that make rain on their own, spells that encourage plants to grow, and spells that block the wind are all powerful forces that make people enjoy life. Aside from the torrent of spells that each night has, almost none of them are attacking, and even if it is, it is designed for the prisoners inside. Perhaps, the ancient sorcerers had already anticipated something, and used this place as the existence of the fire that survived the destruction. However, it seems that they didn't have time to use it, and died outside for some unknown reason. I'm afraid that this reason is closely related to the destruction of the spell civilization back then. ”

"You mean, this was once the last refuge of the spell civilization, and they tried to fight?" Emperor Yan asked, "What's the matter with those cages?" ”

"Who says evacuation can't be used as a cage? Don't forget, if you are one of those people, it is impossible to predict the future destruction, and you can't be gullible with the slightest divination of providence, right? It's a good place to use it all. Ji Yunkong smiled, "Senior sister, I think our focus should be on being inside the cave, rather than relying on clues from the outside world to deduce. ”

Emperor Yan snorted dissatisfiedly, Ji Yunkong obviously deduced something, but he didn't tell himself. What the hell does this guy's head look like? Is it possible to infer things from 10,000 years ago just from these clues?

Emperor Yan ignored Ji Yunkong and walked into the mouth of the black hole in front of him alone. Inside, the winding path is secluded, but countless blood crystal fragments are embedded in the mountain wall, all of which are illuminated spells, and the entire cave is like daylight.

Emperor Yan had just taken a few steps when he suddenly felt a trance in front of him, knowing that it was the shifting array that was working. When she opened her eyes again, her eyes widened, and she looked at everything in disbelief—in front of her eyes, a huge skeleton, at least a hundred feet long, and there was no end in sight, and a single skeleton almost filled the entire belly of the mountain. What's even more amazing is that this skeleton, which has been dead for an unknown number of years, still exudes endless might, and Emperor Yan can even feel the strength of the skeleton owner before his death.

It is a standard snake bone, and although it is huge, the characteristics of the snake cannot be concealed. The difference is that on the spine of the back, two bones stick out to form two huge wings.

"It's Teng Snake." Ji Yunkong also walked out, "The legendary beast that can 'dance and fly', there are clouds in ancient books: the beetle snake swims in the fog and the dragon rides the clouds. It's a creature that can compete with a dragon. ”

Emperor Yan suddenly felt a little dizzy, Teng Snake, of course she knew the legend of this creature. But that's just the legends! Now, this mythical creature has actually appeared in front of him! Although in the form of bones.

"This ...... Is this, could it be? A terrible conjecture suddenly appeared in Emperor Yan's heart.

Ji Yunkong nodded: "Don't hesitate, you guessed right, this is the material they used to make blood crystals, haven't you always wondered before, where did they get the blood to make blood crystals?" The blood of a peerless master is too small, even if it is sucked dry, it will create more than a hundred pieces at most, but the alien beasts are different, they have huge bodies and strong qi and blood, if they are trapped here, kept in captivity, and do not stop bleeding, before they are drained, they can provide at least tens of thousands of blood crystals. ”

Ji Yunkong pointed to the ground, and there were countless iron chains around the neck and body of the bones, and there were also spell marks engraved on the iron cables. Moreover, there are many iron chains falling to the ground, which shows that the strange beasts bound here are by no means just Teng Snake. These beasts are full of treasures, even dead fur and bones are of great use. The reason why this snake skeleton survived is probably because the spell masters didn't have time to deal with it.

Emperor Yan took two steps back, and the shock brought to her by the scene in front of her was too great. Ancient beasts were imprisoned here, and could only become lambs to the slaughter, and they had to die with their blood. Such a scene is chilling just to think about. What kind of great tricks did those ancient spell powers lay here? With such a glorious civilization, how did they get destroyed? Why did all the spells disappear almost overnight, leaving only a few remnants left?

Compared with Emperor Yan, Ji Yunkong's face didn't have much discoloration, perhaps, he had already deduced something from the previous intelligence. The only surprise is that an ancient beast like Teng Snake really exists!

"Hum" The ghost fear on the back of Ji Yunkong's empty hand suddenly buzzed uncontrollably, only to see it suddenly fly out of the scabbard by itself, like a mosquito that smelled blood, and inserted it into the skeleton of the Teng snake with a "bang".

Suddenly, the humming sound of the demon fear roared, and a powerful force was transferred from the skeleton of the Teng Snake to its body. In the blink of an eye, the original white and shiny skeleton of the Teng Snake actually became dull, and after a while, it simply turned into a pile of powder. The demon fell to the ground, giving out a bout of dissatisfaction that he hadn't eaten enough. Coming out, this Teng Snake skeleton has stood upright for 10,000 years, and there is not much essence left in it, and the ghost is obviously not addicted.

Ji Yunkong reluctantly picked up the fierce sword, but the ghost fear did not stop there. Instead, its blade pointed to the other side—there, a unicorn stone carving