When Han Yu came to the underground, he was a little surprised by the scene in front of him.

At the bottom of this small lake, there are dense fist-sized caverns, and some fist-sized green oil rats are burrowing through these holes.

At first glance, these rats look similar to mine rats, but if you pay close attention, you can still see the clues.

Han Yu casually wrapped his hands with spiritual power, and grabbed a small mine rat forward, and found that these mice had sharp and sharp hair, but their teeth were similar to ordinary mice, a little short.

If an ordinary person reaches out and grabs it, the palm of the hand must be bloody.

"Sea Spirit Mouse.." Han Yu took the mouse and looked at it a few times, and a classic book he had read appeared in his mind, and the name of the mouse appeared in his mind.

This kind of rat has close relatives with the mine rat, but this kind of rat is much more powerful than the mine rat, and it is a second-order demon beast.

In addition to their sharp burr protection, they also use several small spells at random, and this rat is often seen in some waters that are not deep, and it is not easy to hunt between some rock crevices.

He felt very kind to see the rats in this underground, and he didn't want the stone spirit to solve them. He threw the mouse in his hand, and suddenly the little mouse "squeaked" twice, turned into a green shadow and disappeared.

Han Yu became more and more satisfied with this kind of small island, although the spiritual veins of the island were not excellent and would not attract those high-level demon beasts, the lake could resist the detection of divine thoughts, and hiding here was definitely a safe thing.

However, it is a pity that Han Yu can no longer retreat like this.

It wasn't because of the lack of elixir, let alone a bottleneck, but because he had no follow-up cultivation techniques and couldn't retreat.

Of course, he could also choose exercises that could only be cultivated during the Dan period, but this kind of thing only existed in the Sun and Moon Twin Cities.

Han Yu asked Shi Ling to dig a temporary cave in the place where the spiritual energy was pure underground, and turned all these materials on his body into puppets before he could get out.

This place can also become a cave for him, with a natural isolation of the divine mind is a lake, if you don't use it, it will be a waste.

The spiritual veins of the island are on a continuous mountain range more than ten miles away from this lake, and it is convenient for the stone spirits to devour the spiritual energy in the spiritual veins.

With Shi Ling's magical ability to manipulate earth and stones, it is effortless to make a small cave.

In just half an hour, the prototype of a cave came out.

Several of Han Yu's caves are lazy and exquisite, and this cave is certainly no exception. He used the array weapon he bought in the city to make a simple defense.

With this multiple insurance, he can be regarded as impregnable.

But Han Yu suddenly seemed to remember something, and hurriedly took out the black jade slip from the storage bag and used his divine sense to check the contents inside.

However, he looked at it for a while and then took it back, it was not difficult to arrange the Shadow Array, but it lacked several rare materials, so he had to give up.

Then he took out a storage bag from his body, poured the aura into it, and the light on the ground flashed, and a small half of the materials in the stone chamber appeared.

Han Yu then calmed down, planning to refine the puppet while also sacrificing another flying sword.

He had already prepared the materials, and it was just right for him to do this now.

Then, the island where outsiders had invaded became calm again, and no one knew that there was an additional human.

....

One day two years later, above a sea in the Sea of Ten Thousand Fierce Seas, there was a blue sky.

Suddenly, the sky above fluctuated, and dense black points of light suddenly appeared in the sky, and they gathered more and more, and in less than a moment, the sky formed a black flare in mid-air.

A moment later, the black flare became extremely unstable, exploded in a roar, and the phantom of the giant tower appeared out of thin air more than a thousand feet above the sea.

The tower is submerged into the sky, no one knows how tall it is, and the whole body seems to be made of some early-extinct materials and bones, which is extremely beautiful, exuding an inexplicable evil aura.

The moment some silver-scaled fish in the nearby sea appeared in this tower, they couldn't withstand the huge pressure and exploded and died, turning into a cloud of blood mist.

And the demon beasts in a radius of thousands of miles actually scattered and fled one after another, even some of them that had transformed into the Yuan Infant Monsters were no exception.

At the moment when this giant tower appeared, Han Yu was putting the flying sword that had been refined into his body, when he suddenly felt a burst of hot breath, and the two fragments in his arms were floating in mid-air out of thin air.

Before Han Yu could react, one of the lenses turned into a streamer and was engraved on his eyebrows, turning into a jet-black hexagonal rune.

The other lens hovered in mid-air, trying to pounce outward.

Han Yu subconsciously grabbed it with his hand, and an invisible force shook his hand away, and the lens disappeared after just a blur.

At the same time, in the Nine Dragons Sea, which is tens of thousands of miles away from the giant tower, all the holders of the lenses also had this kind of encounter, the mirrors turned into runes and inscribed on their bodies, and those deep dangerous prohibitions, some fragments in the secret mansion also converged towards the giant tower like the one Han Yu had just had.

"Could it be that the Tower of Babel has been opened?"

Han Yu took out a bronze mirror and looked at the strange pattern on his forehead, feeling the invisible aura emanating from the rune, as if he felt a certain kind of summoning in the distance.

Han Yu put away the bronze mirror and fell into deep thought.

The Tower of Babel has the lower part of the Taishang Origin, and of course he is unwilling to miss it. But there must be various crises in the tower, and he may fall if he is gone.

After weighing the pros and cons, Han Yu's face showed a resolute look. He had already started planning for this matter, even if it was a mountain of swords and a sea of fire, he would have to go through it.

He didn't want to be trapped in the mid-stage realm for the rest of his life, and he wanted to be able to form a Yuan Infant and go back to take revenge.

Thinking of this, he took the stone spirit back, appeared directly in the sky above a small dirt slope, took out a brand-new machine armor, and a yellow light broke through the sky, and left this deserted island in a blink of an eye.

In the Nine Dragons Sea, there was an undercurrent surging, and on a remote island in the Sea of Fog, a blood-red light rose to the sky, and then a coffin also flew over, turning into a palm-sized and entering his arms, revealing a blood-red young man with blood-red eyes.

The black mark also appeared on the man's forehead, but he closed his eyes and felt it, and his face became a little ugly. He stood there and thought for a moment, but he fled in a certain direction.

When he came to the sky above a cave, a blood ray with the thickness of a bowl appeared in his hand and smashed a cave, only to find that the monks here had already left, and this was just an empty cave.

But the young man didn't seem to give up, and actually attacked another monk's cave.

But when he returned to this place after running dozens of caves in a row, he found that there was not a single monk in the sea of fog.

The blood-robed young man looked extremely ugly, and he fled back to the cave, but soon ran out again. An extra white bead appeared in his hand, and countless bright lights submerged into the mist, dispelling all the mist within a radius of more than a hundred miles.

He looked up at the clear blue sky and didn't make any other moves.

I don't know how long it took before he let out a distraught whisper.

"There is really some trouble going to the Sea of Ten Thousand Fierce Beings from this body, and I can only find a way to use my previous relationship, and I don't know what price to pay. I'm no longer the Blood Demon Ancestor I used to be, and I don't know how much of that favor I had left. And that kid last time, when I go to the Tower of Babel to restore the cultivation of the Yuan Infant Period, I will definitely fulfill your little wish. The blood-robed young man said coldly, and he no longer hesitated to rise into the air, turning into a bloody light.

Then two pillars of blood-red light shot out, smashing his cave into ruins.

Then, in the blink of an eye, the blood left the place, disappearing without a trace.

Han Yu was a little worried about bumping into the demon beast in the process of flying, because the direction of this guidance seemed to be the direction of the main island, but after several days, there was still nothing.

He didn't know that he was being targeted by his old enemy.

He looked very nervous along the way, cautious along the way, but nothing happened, which made him breathe a sigh of relief.

However, on this day, Han Yu was hurrying according to the guidance, and suddenly the light in front of him flashed, and there was a crackling sound and a dazzling light, and at a glance, he knew that there were monks fighting there.