As Roning walked and looked, he found that the walls here were very regular, as if they had been specially polished. There were also lighting devices installed on the walls. The purple-red light seen from outside the cave at night was emitted by these devices.

"Magic crystal lamp?"

Luo Ning took down one of the lighting devices from the wall. Its appearance was different from the magic crystal lamp in Wushan Castle. He wondered what was inside it? "These lamps would go out. I often saw people take them down, then inject energy into them, and then they would light up again."

Carlos recounted what he had seen and heard, "Over the years, I can't even remember how many times Natalia and the others have done this."

Charging device?

Ronin's eyes lit up, "Elron, take two of them over there to study as well."

"Yes, sir!"

Elron didn't understand what Carlos said, but he was curious about the lights on the wall. After hearing what Ronin said, he couldn't help but walk over and take one down.

There are rechargeable magic crystal lamps in Wushan Castle, but they are much more expensive and the manufacturing process is much higher than ordinary ones. Luo Ning has never been exposed to this kind of knowledge, but he can study it when he has time.

Although research like this is more expensive than Elrond making magic potions, some high-level magicians who are obsessed with it will go bankrupt because of it.

However, mastering a technology or even a resource is a kind of capital. If you need it one day in the future, you don’t have to search for information everywhere or even ask for help.

The two men and the dragon stopped for a while and then continued to move forward.

There are corridors, halls, and even dark rooms and rooms in the cave. It is like a castle built in the mountains.

The only uncomfortable thing is that the air in here is not well circulated and the smell is very unpleasant.

"Master, this is the altar that controls me."

Carlos walked around a corridor and came to another spacious room.

There is a circular altar in the center of the room, carved with complex patterns. Based on Ronin's experience, this should be a magic array, and a very high-end one at that.

Because when Roning concentrated his mental power to observe, he felt a tingling sensation in his mind.

"How did Natalia do it?" Roning asked.

Carlos walked to the side and said, "She can activate the magic circle on the altar by injecting energy into this palm print."

"oh?"

Luo Ning walked over with some curiosity and tried to inject fighting spirit into the palm print, but the magic circle did not change at all.

He then changed his strategy and injected magic power into it, but the result was still the same.

"Elrond, you try it."

The light magician imitated Ronin and injected magic power into it, but his hand was bounced away by a strong force.

"My Lord, I feel it is rejecting me."

Roning was a little surprised. No matter whether he injected fighting spirit or magic, there was no reaction, except Elrond was rejected. This could only mean that activating this magic circle required extraordinary energy with special properties.

As for the light attribute, Elrond was able to use purification to dispel Redal's injuries, which shows that the light attribute is incompatible with Natalia and their special extraordinary energy, just like now.

"Natalia uses a black energy."

Carlos's words confirmed Ronin's guess.

Dark energy? Roning frowned slightly. He thought of Lu Lansi. The other party also had a kind of dark energy in his body, and the corrosive effect of the Soul Devouring Surge was somewhat similar to the effect after Natalia and the others injured their opponents.

Of course, the effect is somewhat similar, but the erosion process and the characteristics exhibited are obviously different.

However, this does not prevent Luo Ning from wondering whether there is any connection between these two energies?

"Master, this is the passage for them to transport food."

Carlos came to a door that was only about one meter wide and he couldn't pass through it.

Rhonin and Elrond walked through the door together and walked down the steps. At the bottom they saw a pool with a diameter of seven or eight meters and a depth of three or four meters.

There were densely packed round holes on the pool wall, which seemed to allow water to leak out. However, what concerned them most was the bottom of the pool, where there was also a mysterious magic circle.

"Sir, this magic circle is different from the one above."

Luo Ning nodded slightly. He looked around and finally saw the "switch" on the table on the right side. It was also in the shape of a palm print.

Elron also noticed it and volunteered, "I'll try."

This time, the activation device did not repel him.

When Elron injected light magic into it, the magic circle below was activated.

There was a buzzing sound, followed by a surge of colorful light, and the whole room fell into chaos.

As the two were curious, nervous and a little cautious, a pool of sea water suddenly appeared in the pool.

Yes, it really is a pool of sea water that appeared out of thin air.

The light dissipated and the magic circle cooled down.

Luo Ning looked at the scene in front of him in surprise. Was it a summon? Or a teleport? The water in the pool flowed out from the densely packed holes on the pool wall, flowing along the passage below to an unknown destination.

As the water flowed clean, the fat fish remained in the pond, jumping around non-stop, as if trying to jump out of the pond to escape the fate of being caught.

But the pool was too high and the hole was too small, so they couldn't escape.

"This should be teleportation."

Roning secretly judged that if he summoned, he would not be able to summon different species. There were many kinds of fish in the pond, big and small, and even shells and turtles.

If it is teleportation, there may be a teleportation array at the other end, and this teleportation array is likely built on the seabed.

Once this side is activated, the sea water from the other side and the creatures in that area will be transmitted over.

This explanation is reasonable, but no matter how to say it, using such a high-end method to replenish fish is really a waste and unbelievable.

"Elrond, we..."

He looked towards the Great Physician, only to see Elrond leaning there wearily.

Luo Ning's face changed. Could it be that this magic circle had some side effects? "What's wrong with you?" He hurried over and asked.

Elron waved his hand and said, "Activating this magic circle consumed almost half of my magic power and a lot of mental energy. Fortunately, I just meditated and refined some of it, otherwise I would be exhausted by now."

Luo Ning breathed a sigh of relief. As long as there were no side effects , it would be fine. It was reasonable that the activation of a teleportation magic circle would consume a lot of magic power. However, they did not think about it in advance and were a little careless.

"Just take a rest here for a while."

As Luo Ning said this, he jumped into the pool and put the catch into his space ring.

The catch this time was not much, less than one cubic meter when piled up.

No wonder Carlos said it was often hungry. This way of fishing consumes extraordinary strength. Even if Natalia and the others all go out, they can only catch five or six times a day. If they are unlucky, there will be nothing to eat.

Roning looked at the magic circle that had reappeared, and he knew that its value was immeasurable.

Perhaps, this is the most valuable thing in this cave.

"Teleportation should be considered space magic, right?"

The seven gods that people often talk about represent the seven attributes of earth, wind, water, fire, thunder, light and darkness.

Luo Ning had never heard of a space magician. (End of this chapter)