The dark cave was not dark and damp as expected, but very dry, and there were no dark creatures like bats.

Yun Fan stepped on the dusty ground, leaving footprints one by one, the wounds on his body had healed when he broke through to the Spirit Sect realm, and the blood on his body was gradually dried, leaving a large red mark on his clothes.

Looking at the dust all over the ground, Yun Fan was even more sure that the existence here was definitely not a living thing.

Soul Seven's figure was no longer visible, but Yun Fan and the giant bird were walking forward unhurriedly, with Soul Seven in front, he was not worried about anything happening.

The tunnel of the cave is some distance, and after walking for half an hour, Yun Fan faintly saw that at the end of the cave, there was an iron door, and the two sides of the door were inlaid with night pearls, exuding a faint light.

Soul Seven stood in front of the iron gate, staring at the iron door closely.

"Master, what about the mysterious existence?" Yun Fan looked around, but he didn't find anything, all of them were uneven mountain walls, and they were all unobstructed.

The giant bird also turned its head in confusion, trying to see what the mysterious existence that had scared it for so many years really looked like.

"Isn't it right in front of your eyes?" said Soul Seven with a nod in the direction of the iron gate.

"Huh?" Yun Fan was stunned, raised his head and looked at Soul Seven's line of sight, but he didn't see anything.

"No, I don't. Hey, what is that?" Yun Fan just asked with some confusion, but out of the corner of his eye, he caught a glimpse of a black protrusion directly above the iron gate, but in the dark cave, it was easy for people to ignore its existence.

"It's the source of that murderous intent, in other words, the so-called mysterious existence. Soul Seven said lightly.

"Is it?" Yun Fan looked at the black protrusion in disbelief.

"Then I want to see what it is!" Yun Fan snorted coldly, flipped his right hand, and a huge night pearl appeared in his hand, and with a flick of his fingers, the night pearl was deeply embedded in the wall above the iron door, and the place was illuminated in an instant.

It was also at this time that the black protrusions were really exposed in front of people.

Yun Fan looked intently, but found that the black protrusion turned out to be a semicircular bead, and looking at the traces next to the bead, it seemed to be embedded in it alive.

The surface of the bead is covered with dust, which obscures the contents of the bead, making it difficult to see what it looks like.

With a slight wave of Yun Fan's sleeve robe, the dust on the surface of the bead scattered in a stream, revealing the objects inside.

When they saw the contents of the bead clearly, the giant bird and Yun Fan couldn't help but widen their eyes, but Soul Seven still looked calm, as if he had already guessed it.

"That incomparably tyrannical killing intent just now, is it coming from?" Yun Fan looked at the contents of the bead in disbelief, and couldn't help but swallow his saliva.

"What, you still want to try the feeling just now?" Soul Seven glanced at Yun Fan playfully, "If you want to give it a try, I can help you." ”

"Ugh. Yun Fan was speechless for a moment, and touched his nose in a sneer, the feeling that life was worse than death just now was too difficult, and he didn't want to experience it again.

"Is this what has scared me for hundreds of years?" the giant bird also couldn't believe its eyes.

In that bead, something was quietly suspended, something blood-red.

A drop of blood-red essence blood!

"I've been stunned by a drop of essence blood for so long?" the giant bird was a little dumbfounded.

It had always thought that this cave was inhabited by a mysterious powerhouse with extraordinary strength, but in the end it found that it was only a drop of blood, which was no less than a drop from heaven to hell, which made it a little unacceptable.

"Do you feel that this little drop of essence blood has shocked you for hundreds of years, and you feel extremely aggrieved?" Soul Seven glanced at the giant bird.

"Isn't it?" said the giant bird subconsciously.

"Stupid, do you know whose essence blood this is?" Soul Seven sneered.

"Is it difficult or the essence blood of the divine beast?" the giant bird couldn't help but retort.

"Although it's not the essence blood of a divine beast, it's not far off. Soul Qi looked at the incomparably scarlet essence blood fixedly, and muttered, "This is one of the four fierce beasts, the essence blood of the eyes!"

"Jairus?" Yun Fan's pupils couldn't help but shrink suddenly, "That the legendary Jairus, one of the four fierce beasts that is almost comparable to the Four Great Divine Beasts?"

"What is that?" the giant bird had a confused look in its eyes.

"You know the Divine Beast, but you don't know the Fierce Beast?" Yun Fan turned his head and glanced at the giant bird a little strangely.

"Well, there's something about the Divine Beast, and I've heard from those who have been here. The giant bird said with some embarrassment, "It's the guy I eat, that guy is very good at telling stories, and he tells so many stories that I can't bear to eat him." ”

"Then didn't you eat him in the end?" Yun Fan rolled his eyes a little speechlessly, and observed three seconds of silence for the fat man who racked his brains to tell a story, it was really unlucky to meet this kind of unscrupulous bird.

"He's finished telling the story, I still don't eat him, why are you keeping it? Grab food from me?" said the giant bird.

"Well, the explanation is powerful. The corners of Yun Fan's mouth couldn't help twitching.

"So is that Jairus the same existence as the Four Great Divine Beasts?" the giant bird couldn't help but ask.

"Let's just say that. Yun Fan thought for a while, recalled the records in the classics, and said, "The legend of the four fierce beasts is brutal and murderous, and everywhere they go, corpses are everywhere, which can be said to be a real murderer, but there are not many records about them in the classics. ”

"This is what you humans have recorded about the four fierce beasts?" Soul Qi glanced at Yun Fan with some disdain, "What kind of bullshit record, do you know why Qinglong, Vermilion Bird, White Tiger, and Xuanwu are divine beasts, while Jianxi, Gluttony, Zhu Yan, and Qiqi are fierce beasts?"

"Well, maybe I don't have a lot of books in my family. Yun Fan scratched his head a little embarrassed, and then asked with some curiosity, "Then why is this?"

"Because they lost the fight that year. When Soul Seven said this, his expression was quite strange.

"Ga?" Yun Fan and the giant bird on the side were all dumbfounded.

"Did you lose the fight?" Yun Fan's forehead flashed with three black lines, "Do you mean that back then, the eight of them had a fight, but they lost the battle, so they had no choice but to take the name of the four fierce beasts?"

"You can say that, but these four guys are also really murderous, and their temperaments are a bit extreme. Soul Seven said helplessly, "Compared to them, the green dragons are still good-tempered, and it is understandable to be the four great divine beasts." ”