Zhang Fan put away Long Yuan and set his eyes on the long-awaited target, "I feel that when we come to this small underground world, every step is full of danger, whether it is or not the Spirit Gathering Crystal is pulling me here, it is best not to let us down." ”

Fang Yu was puzzled and said, "Zhang Fan, didn't you say before that there was a large amount of spirit gathering crystal energy that attracted you here?

"No, those energy breaths are still spiritually crystallized, but the reason why I'm here is not sure is because don't you think there's one thing that's strange?"

Fang Yu still didn't understand what was strange, Jian Xin also nodded and said, "It's really strange, Yu'er, think about it, since it was a large number of spirit crystals that attracted Zhang Fan to come here, then it stands to reason that there should be a lot of spirit crystals here?" But since we came in, in addition to seeing them on some giant beasts, have you seen other spirit crystals around?" Moreover, those beasts that can condense crystals in the body are only a few, so where is the source of that large amount of spiritual crystalline energy?"

After Kenshin said this, Fang Yu was only an afterthought at this time, it was true, from the moment they fell by mistake, Fang Yu didn't see a piece of spirit crystal exposed on the surface, you must know that when they were in the Qihuangshan mine before, those elves didn't dig deep, that is, they could find so much crystal ore in the ground, but since the energy is so big that it can attract Zhang Fan to come here, it doesn't mean that the amount of ore here should not be less than that of the mine, but now there is indeed no shadow of a crystal around.

"Really, what do we do now, do we still want to go up to the central island?"

"Naturally, you still have to go, and there is no reason not to go and find out when you are here, but you have to pay more attention. ”

Zhang Fan and the three of them landed on the huge floating island with the help of Jian Xin, and as soon as they got here, Zhang Fan hadn't even landed, but they felt that they had passed through an invisible shield, and the aura and fluctuations that attracted Zhang Fan to find it before entering it were more than double or twice as strong, as if the entire air was filled with that breath.

Zhang Fan didn't think this was a good sign, because the transparent shield that shrouded the entire floating island obviously isolated everything on the island from the outside world, and most of the powerful aura in it lingered here for this reason.

And this Zhang Fan didn't think it would be a natural formation, because the artificial traces in it were too obvious, although it was not very strong, but from this floating island, he felt a trace of fluctuations caused by the spirit array drive, and when he walked in it, he saw more large and small waterfalls.

The huge column of water from the lake at the bottom flows upside down into the island, apparently nourishing the suspended land in the form of this waterfall, in which the streams are everywhere, the fish and birds are happy, and the water vapor from the water falling from the heights is a colorful rainbow in the beauty of this paradise.

Although the beautiful scenery is in front of them, but Zhang Fan and the three of them do not have the heart to appreciate, the closer to the interior of the island, Zhang Fan can't help but feel nervous, after walking for dozens of minutes, the three of them saw a waterfall that should be the largest in the island, and now he is deeply aware of the magnificent feeling of the flying stream down 3,000 feet.

The huge water curtain spanning nearly a thousand meters slammed into the ground from top to bottom, and a large amount of water vapor rushed towards Zhang Fan and the three of them, and the water vapor was hot and humid and full of soft spiritual power, which made Jian Xin and Fang Yu, who had been tired for a long time, feel comfortable.

At this moment, Zhang Fan noticed that there was an obvious little light flickering in the waterfall, and the source of the strong large number of spirit gathering crystal fluctuations was the place of flashing, "Found it, what we are looking for should be on the other side of this waterfall." ”

Hearing this, Jian Xin made a move of sword qi to draw a huge water curtain out of a blank channel, through the faint light of this channel, Zhang Fan could only see a dim pitch black, the three of them walked in cautiously, but to Zhang Fan's surprise, when he saw the pitch black outside, he thought it was because the outside light shone too little, but at this time, when he looked closer, he realized that this was not the case.

I saw a black ink-like thing like a smooth mirror blocking Zhang Fan's way in front of them, "Knock knock," Zhang Fan tentatively tapped twice, and two dull voices came out, "What is this? Is it just a huge mirror wall under such a big waterfall?"

But Zhang Fan could still see that the flickering light was still shining inside, "Senior Kenshin, do you know what this thing is made of?" Kenshin shook his head and said, "I haven't seen this kind of thing either, this thing is not like any known substance that has been recorded in our spiritual capital in terms of material or strength." ”

Fang Yu began to gently touch the surface of the thing with her hand, but to her surprise, the black mirror wall that Zhang Fan couldn't knock in before, but at this time, she directly let her hand go in, "Zhang Fan, Grandpa Jian Xin, you see, this, this is ........."

Seeing this, Zhang Fan also tried to slowly stretch his hands in, "This thing is really strange, just now I hit it hard like a solid stone, why is it so gentle to pass now? How is this thing so similar to the principle of Newtonian fluid?"

Jian Xin and Zhang Fan looked at each other, and they walked towards the black mirror wall together, originally they thought that they should be in a dark space after entering, but surprisingly, Zhang Fan and they seemed to have entered another world, as far as the eye could see, and above their heads were full of stars.

The other side of the foot is crystal clear, and the water surface that can reflect all the details of the three of them in great detail, like a huge water mirror, looks so luxurious and beautiful, and when you walk in it, you are worried that the mirror under your feet will suddenly break and fall.

Walking towards the shining point step by step, what gradually appeared in front of them was a round stone about the size of an ordinary basketball quietly placed on a stone pillar, and after the three of them were sure that there was no threat around, Zhang Fan tried to stretch out his hands to touch it, wondering what this thing was, because it was completely impossible to see its specific situation from its stone surface full of pits.