After making up his mind, Qin Nan harnessed a Heavenly Demon Mother Tree Root and headed straight towards the ground. The roots of this mother tree, the tail end is very sharp, it can be said to be indestructible, and any soil layer of sand and stone structure can be easily broken, until Qin Nan went to a mysterious place.

At first, Qin Nan drove the branches of the tree and first entered the floating soil, and he himself did not have any hope for this, because if he went underground, where would there be a better way out?

About ten minutes later, Qin Nan harnessed the roots of the Heavenly Demon Mother Tree, completely pierced through the floating soil, and entered a softer layer of soil.

In the case that the soil layer was already very strange, if such a thing happened again, Qin Nan suddenly felt even more strange, even the roots of the Heavenly Demon Mother Tree seemed very abnormal and extremely active.

The first layer of floating soil just now is characterized by its thickness, and it took more than ten minutes to even break through the roots of the Heavenly Demon Mother Tree, which was a situation that Qin Nan had never encountered before, and the Heavenly Demon Mother Tree had never encountered it.

Until now, he has entered the second soil layer, which is even more strange here, because the soil layer is softer, and Qin Nan can faintly determine whether what he perceives is real or not through the changes in the tail end of the roots of the Heavenly Demon Mother Tree.

"In this layer of soil, there is a water dragon breath. "This is the secret that Qin Nan discovered, that's right, there is a water dragon in the soil.

Of course, it doesn't mean that there is a dragon living underground here, the breath of the water dragon is a symbol of the breath of the dragon king in the water, and under such a mysterious atmosphere, there must be something amazing.

Qin Nan didn't believe it at first, because where could it be so coincidental? He had just encountered the aura of a water dragon? This was too much of a coincidence.

But after observing the changes in the roots of the Heavenly Demon Mother Tree, Qin Nan determined the idea in his heart, there was indeed a water dragon qi underneath, but it might be because the soil layer above was too thick, so that it had not yet emerged from the surface, formed a terrain, and was silted up in the ground at a depth of 100 meters.

The roots of the Heavenly Demon Mother Tree, in such a situation, can absorb a large amount of water dragon qi and convert it into the energy it needs. The Heavenly Demon Mother Tree itself is a green wood attribute, but when it takes root and sprouts, it is contaminated with the power of pure yang true fire, which has cultivated its fire wood physique, whether it is the power of fire attribute or the power of wood attribute, it can be digested.

Like the water dragon qi in front of him, it is obviously watery, but it can be easily absorbed by the Heavenly Demon Mother Tree, firstly, because this water dragon qi is domineering, not to mention the big tree, even if a person goes to drink two sips, it is also a good medicine to strengthen the body, cure the disease, and strengthen the body without illness.

As for the roots of the Heavenly Demon Mother Tree, its obsession with this water dragon qi was simply uncontrollable, and it was always frantically advancing alone in the soil layer with the water dragon qi, as if it was about to hollow out its old nest.

For the water dragon qi, after the roots of the Heavenly Demon Mother Tree were absorbed, the benefits were self-evident, and Qin Nan could clearly see that the annual rings of the Heavenly Demon Mother Tree were increasing. At the beginning, Qin Nan also tried to stop the Heavenly Demon Mother Tree, afraid that a greedy and endless guy like it would make some mess under this ground, after all, this is not on the ground, if something happens, then I don't know how troublesome it will be.

But later, Qin Nan quickly dispelled this concern, because no matter what, the owner of this water dragon qi would definitely not live in the soil, they must have secret caves in the depths of the soil layer, this was one of Qin Nan's guesses, because how could there be large creatures in the soil to survive?

Qin Nan not only dispelled this concern, but also gradually developed a strong interest in it, that is, what was the origin of the owner of this water dragon qi? This greatly aroused his curiosity.

According to the location and thickness of this water dragon qi, it can be judged that the other party is at least an emperor-level demon beast, of course, this is only the most conservative estimate, Qin Nan also faintly estimated the possibility that the other party is an emperor-level demon beast.

At this time, Qin Nan harnessed the roots of the Heavenly Demon Mother Tree, pierced through the thick layer of soil, and suddenly entered an underground undercurrent. That's right, it's an undercurrent, not very big, but it can be found that the source of the water dragon's qi is related to this undercurrent.

Qin Nan immediately controlled the roots of the Heavenly Demon Mother Tree to advance, along the winding undercurrent channel, and after a while, the surroundings were completely quiet, and there was no longer the "whoosh" sound of the water flow in his ears, it was really quiet.

Seeing this, Qin Nan was taken aback, and then he began to have a lot of surrounding environment, only to see that at this moment, the environment where he and the roots of the Heavenly Demon Mother Tree were located was pitch black, very quiet, and it looked like night, on the wall not far away or on the stones on the ground, there were still some dwarf plants growing, according to this situation, Qin Nan faintly judged that he had entered the sea.

He entered the soil layer from the land, and then accidentally discovered the water dragon qi along the soil layer, and then followed the water dragon qi to the sea, if the source of this water dragon qi is in the sea water, then it is not strange to say.

The family that created this water dragon qi must be the overlord of the sea, even if they let their water dragon air flow out for dozens of miles, no one dared to openly jump out and swallow it secretly, at most they hid in the dark and sucked two mouthfuls.

It can be seen that the guy who created this water dragon qi has a very difficult position, and with his own breath alone, he can suppress all the fierce beasts in the nearby seas, so that he does not dare to approach easily.

Of course, Qin Nan has not yet analyzed what the other party is based on this water dragon qi, which is also one of the reasons why he is extremely curious.

At this time, Qin Nan figured out where he was currently and what kind of environment it was.

This is a sea in the center of the earth, that's right, Qin Nan vaguely remembered that it was called this way, the ocean in the center of the earth was connected to the ocean by a waterway, but it was in the center of the earth, and it was not really presented outside the surface.

After figuring out the situation, Qin Nan drove the Heavenly Demon Mother Tree to move in the direction of the top. There was also water on top, and it was also pitch black all around, and the scene looked slightly eerie.

The location where Qin Nan and the Heavenly Demon Mother Tree's roots came out just now was just one of the many tributaries of this Earth-Centric Ocean, just like a supporting vein of a heart, it could be said that it was important or not, anyway, it was the same thing.

At this moment, Qin Nan felt that his eyes lit up!