The crystal in the middle of the hall was called the core of the volcano by the rock giants, and before Lukka and the others arrived, the rock giants kept pouring special cold spring water from Moon Spring Island on it, so that its temperature was just enough to keep it at the level of white light.

Now, because of Dolan's unexpected appearance, which attracted everyone's attention, no one even remembered that the crystal still needed to be cooled down.

"Hurry up and water it, or at this rate, the whole volcano may erupt completely." Lukka spoke quickly, and Phil reacted quickly, and ran to the pile of jars beside the rock giant, found one full of water, and turned around and splashed it.

A large cloud of water vapor rose from the crystal, but the color of the crystal did not change, it was still a blazing light with a blue tinge in white.

"I haven't cooled down for half a day, I'm afraid a can of spring water is not enough!" Nora also ran over, and together with Phil, he kept pouring spring water on the crystals.

The situation has finally stabilized slightly, although the light on the crystal has not changed back to its original color, it has not deflected to blue again, and it seems that dozens of more cans of cold water should be able to cool down to its original state.

But at this time, Nora and Phil suddenly stopped at the same time.

"Why don't you move? you can't stop yet!" Dolan was more anxious than anyone else, probably no one was more afraid of fire than a plant.

"There's no water. Phil said as he rummaged through the pile of empty jars.

Shut up and flutter his wings and shouted: "Idiot mage, use the power of plastic energy to cast a frost spell, you should be able to block it for a while!"

Lukka spread his hands helplessly: "The power of plastic energy is still asleep, I am carrying the power of change." ”

Shut up for a moment, and shouted even louder: "Idiot, stupid, do you have a brain? What kind of power does it bring to the volcano!"

No matter how much it scolded, it couldn't make the temperature of the volcano's core rise to a lower rate, and the light emitted by the crystals deflected to blue again, and even the lava in the surrounding pools began to change from orange to golden yellow.

The obsidian ground around the lava pool had faded to black under the scorching heat, making a faint crackling sound and countless tiny cracks appeared on the surface. Even the sleeping rock giant next to him began to show a faint red color, and if the temperature rose any further, he would become a lava giant.

"Get out of the way!" Thea let out a sudden yell, a bolt of lightning bursting from her fingertips and slashing straight at the core of the volcano.

"Aren't you messy enough?" Shut up and flutter feathers, splitting lightning on hot crystals, only making the temperature even higher, and maybe it will cause the volcano to erupt early.

However, after this lightning bolt, the heat on the crystal gradually subsided, and the color even returned to golden yellow at once, something that the rock giant had not been able to do after pouring spring water for so long.

"This actually works!" Lukka knew that Thea might contain unimaginable energy, but it didn't make sense to use lightning to cool the volcano.

"No, it's hot again!" Phil shouted again.

After all, the energy of a bolt of lightning was limited, and the core of the volcano was only suppressed for that moment, and soon burst out again with the energy that continued underground.

"Stay away!" Thea waited until Phil and Nora were pushed to safety, and leapt from the ship, transforming into a silver dragon in midair, opening her mouth and spitting out a breath of lightning.

The dragon's breath was different from a small bolt of lightning, from Thea's mouth to the end of the hall, the entire cone was covered in lightning, and the entire hall shone with a silvery white light, making it impossible to look at it directly.

When the crackling sound fell silent, Lukka opened his eyes.

In the lava pool in the middle of the hall, the light from the crystal suddenly diminished, rapidly changing color, and finally turning into a black stone, unlike the obsidian around it, this stone was crystal clear, more like a crystal dyed black.

Around the crystal, the originally red-hot magma has been covered by a layer of black, and the last bit of lava in a liquid state unwillingly bubbles out of the last bubble, and then condenses into a solid.

What is even more amazing is that the rock walls that have been swept by the lightning dragon's breath have now completely turned black, no different from the obsidian on the ground.

"Look, I'll just say that the dragon crystal is something made by the dragon, right?" shut up and shouted excitedly, but its excitement seemed to be a little off.

Now, the only source of light in the hall, the pool of lava, had been extinguished, and only the scales on the silver dragon's body glowed with silver light, reflecting layers of light on the obsidian floor.

Lukka casts several light spells in a row, causing the magic effect to attach to the surrounding walls, and act as wall lamps.

"Thea, temperature! watch the temperature! you're out of range of the Iron Ship!" called Nora anxiously.

Although the silver dragon was still in the young dragon stage, and its length was more than five meters, this was still the length of time she took her tail back and coiled it around her, and the alloy iron ship naturally couldn't fit it.

Thea turned back into her human form, but instead of immediately returning to the boat, she reached out and felt the air for a moment, then shook her head and said, "It's not that hot in here anymore, and besides, I underestimated my resistance, and this bit of heat doesn't seem to be able to penetrate my scales." ”

"How did you do that?" asked Phil.

Thea's big eyes were a little dazed: "I don't know, it's just ...... Dizzy. ”

As she spoke, her body shook suddenly.

"Don't let her use her brain yet, with so much effort, even a dragon needs to rest. Lukka walked over, grabbed Thea, saw that she was still swaying, and simply carried her back to the boat and lay down.

"I don't know how she did it, but she looks amazing!" said Phil as he followed.

Lukka looked back at the hall and breathed a sigh of relief, "Okay, now that the obstacles have been removed, we can go find the Guide Stone." ”

"Well, let's get it and go, there are so many weird things here. Ollie said and walked over to the iron ship, pushing Thea and Dolan, who were resting on it, towards the door at the back of the hall.

The iron ship made its way on the smooth ground, smoothly passing through the obsidian gates.

Not far behind the door, there was another staircase leading to the top, and with the previous experience, even if she was still dizzy, Thea insisted on coming down and walking by herself, only Dolan the wood spirit was left on the boat.

Finally climbing to the third floor, Dolan, who had been standing still, suddenly let out a scream: "Dragon! There is a dragon among you!"

"You're too long, aren't you?" Lukka sighed.