If the strongest sealed monster in this Water World was the Hell Hydra King, Yue Yang definitely would not believe it.

What he was most concerned about was this Hell Hydra King could be the subordinate or friend of some ancient being that just wouldn't die.

Just like that black bearded Mo Long who was sealed in the Death Boundary within the man-eating lake in the Southern Heaven Realm, the Ancient Demon Shark, Ancient Island Whale, Dragon Electric Eel and Cuttlefish King were also sealed together with him. These five Hell Hydras might just be the subordinates of some ancient monster, who knows?The Hell Hydra King seemed to have a certain intellect as it had a doubtful gaze when it saw Yue Yang and the Stone Element Stone Element Medusa.

The other four Hell Hydras were the complete opposite, especially the ones who just reached adulthood. They attacked Yue Yang and Stone Element Medusa the instant they saw them. Many gigantic heads spouted raging flames, icy frost, thunder, lightning, black fog and poison, all at the same time, charging towards their enemies ferociously.

Having a long history of battle, Stone Element Medusa was undaunted.

The level pressure was nothing to someone who was as intelligent as her.

She wanted to accept the battle but Yue Yang felt that carelessly starting the battle was the most foolish decision, since it might just be what the Ancient Demon King wanted.

"Let's go!" Yue Yang said, flying up high.

In this water world, flying was not restricted by the Code.

Even though Stone Element Medusa was not very good at flying, but as a Beast close to becoming a Holy Beast, floating in the sky would not be a problem for her.

Four Hell Hydras that were the size of small islands, spouted different attributes of attack towards Yue Yang and Stone Element Medusa, weaving up a fire net in the sky. If Stone Element Medusa was the only one, she might not be able to completely dodge the attacks. However, Yue Yang held her hand and skillfully got out of the fire net, escaping at a fast speed while keeping close to the water surface.

The Hell Hydras pursued relentlessly but soon realised that Yue Yang had left their attack range and disappeared, teleporting in an instant.

Having lost their target, they could only helplessly return back to their King's side.

The Hell Hydra King's eyes contained suspicion, as if it was thinking of something.

Responding quickly, it submerged underwater in a hurry. The four Hell Hydras could not understand what was happening, but they closely followed their king. At a depth of one kilometer underwater, the seabed was not in complete darkness. Rather, there was a peculiar scene. The seabed had countless glowing plants and animals, decorating the seabed brightly like the starry sky. Underneath some gigantic glowing plants shone as bright as the day.

There was nothing on the water surface, but the seabed was thriving with life, turning the place into an indescribably marvelous world.

Seeing the Hell Hydras swimming across the sea, all the fishes hid inside the reefs. Some of the glowing plants even shrunk into a lump.

However, the Hell Hydra King did not bother about the surrounding and went straight towards a huge underwater forest.

The size of the forest was unknown, every tree was old and at least a hundred meters tall.

After entering a distance of ten kilometers, a wide vacant land appeared.

An Ancient Seal, which was ten times bigger than the Ancient Teleportation Portal outside, appeared in the center of the vacant land in the forest, surrounded by ten crystal pillars. The Hell Hydra King returned to the center of the Ancient Seal, wanting to rest when suddenly its eyes suddenly opened. Looking towards the southeast direction, Yue Yang's silhouette appeared on top of a crystal pillar.

"Thanks for leading the way, I finally understood what was happening. "

Not waiting for the Hell Hydra King to get angry, Yue Yang immediately teleported away.

So much for the Ancient Teleportation Portal sacrificial offering, everything was all the Ancient Demon King's schemes. There were three parts to the Ancient Demon King's plan: First was to separate Yue Yang from his party and then get a hostage to drive him mad. Second, it would be to get Yue Yang to fight with Hell Hydra the moment he enter the Ancient Teleportation Portal. When both sides were exhausted, the Ancient Demon King would strike. Third, when Yue Yang killed the Hell Hydras that were guarding the place, he would provide the chance for the Ancient Demon King to release his companions... These Hell Hydras were the guards. Yue Yang did not know why they were guarding, but they were definitely guarding. The real monster was still sealed in the Ancient Seal, unable to escape!

Those Heaven Realm Goblins and Dwarves should be workers that were providing food to the Hell Hydras.

It could be that the Ancient Demon King convinced the Heaven Realm Goblins, so when the sacrifice begins they would drive away the Heaven Realm Dwarves.

If Yue Yang did not arrive, these Heaven Realm Dwarves would have all escaped and the Hell Hydras would have no one to support them. They will then leave the seal in search for food, letting the Ancient Demon King have his way.

Returning to the water surface once more, Yue Yang immediately asked Stone Element Medusa, Storm Mermaid, Thunder Naga and Ice Serpent Demon to search the whole isle on this water world separately, killing the Heaven Realm Goblins above. Only through getting rid of the Heaven Realm Goblins, the Heaven Realm Dwarves would be able to stay in this water world for the time being. Considering the a dwarves were very well tamed, they would not leave this water world.

Inside Yue Yang's heart, he had a strong premonition that after this small secret battle, there would be a huge war and waiting for him.

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