Lukka looked at the gray mist that kept pouring out under his feet, and although he held the amethyst staff in his hand, he couldn't find a spell to cast.

"Is it too late to run now?" Thea said halfway through her words, she transformed into a silver dragon and squeezed down several pillars next to her.

"Where can you go?" asked Phil, frustrated.

The fog grew denser and denser, filling the circular pattern on the ground in the middle of the hall.

Hall had been laughing since the beginning, but when he could already start celebrating the victory, he suddenly stopped, put on a puzzled expression, and muttered to himself, "What went wrong?

Now, Luka is completely invisible from the waist down, and the fog is more than a meter above the ground, and it continues to increase.

In the middle of the circular pattern, above the lighter-colored floor tiles, there was no fog at all, and within a diameter of about forty centimeters, there was only air as clear as a clear sky after rain.

Now, the thick fog accumulated on the ground, like the beer that has been shaken in a bottle for a long time, is about to gush out, although it has accumulated infinite power, but it is crushed by a small bottle cap, and it cannot be released in any way.

"What's going on?" asked Ollie.

"Could it be that the captain's spell caused time confusion, and that the wand missed the time to open the passage?" Phil speculated.

"No, it's not about time. Lukka shook his head.

His mind flashed back to the three scenes that Selva Fes had shown him, and in the first scene, although the form was different, the hall opened the passage in a similar way.

There must have been a reason why the archmage had shown him the picture, and Lukka desperately recalled every detail, trying to find the difference and connection between the throne hall back then and the one in front of him now.

"I see!" Phil's speculation came one after another, "it's the stone in the middle, the color is different from the others, it must be that stone has a mysterious power that can suppress the tendency of the passage to open!"

Lukka took the staff to his left hand and leaned down, his right hand piercing through the fog below, touching the smooth stone bricks on the ground.

He straightened up, walked through the thick fog that hissed beneath his feet, walked to the center of the circular pattern, crouched down and touched the lighter stone brick in the middle.

"No, not this stone. Lukka stood up, "It's just the most ordinary stone brick, although it is old and polished smooth, it has no power on it, no divine power and no magical energy. ”

He glanced back at Phil and added, "There's no scientific value either, that's the kind of rock that's common on the beach." ”

Phil asked, puzzled, "Then how can it stop the passage from opening, and will there be energy on it that you don't recognize?"

Lukka shook his head: "It's not this stone brick with energy. ”

He rotated 360 degrees in place, looked in every direction of the hall, and continued, "It's all the other stones in this pattern that have energy!"

Crete walked away and suddenly said, "If I am not mistaken, the other stones only serve as guides. ”

"Yes, the other stones are used to guide, and the middle piece is used to act as a switch, and when the divine power, or magical energy, or whatever else knows, is fully channeled to the middle piece, the passage will open. Luca agreed with Crete's statement and explained it in more detail.

"But didn't you say that the middle one is just a normal stone?" Phil was confused.

"That's because," Lukka smiled, "the stone that served as a switch had been replaced a long time ago!"

"Replaced?Who is so idle and has nothing to do to steal a broken stone?" Thea found it hard to understand that someone would go to such a non-gold and non-silver thing.

"Is there anyone other than us trying to stop this?" Ollie began to mentally paint a picture of what an ally would look like.

"No, the stone was replaced more than 800 years ago. Isn't it, Daniel?" Lukka asked, turning to the ghost.

Daniel didn't expect the question to come to him, scratched his unkempt blonde hair, and asked in confusion: "How do I know about what happened eight hundred years ago? I've only been dead for more than four hundred years." ”

"You touch the texture of the other stones!" Lukka prompted, he didn't mean to be a traitor, he just didn't want to explain everything, you know, Hale's magic stick was still listening.

Daniel didn't understand the reason for Luca's dissatisfaction, leaned over and touched the ground and jumped up, shouting, "This is ...... with our ship"

Lukka hurriedly stopped him: "Don't say it!"

But when Daniel spoke loudly, all other voices were filtered out of his ears, and he completely ignored Luca's reminder and continued: "...... Is this the capital of my ancestors on land? Wait, you mean, the switch that opens this passage is actually the bilge of the Silent Death?"

When Lukka rushed over to cover his mouth, Daniel had already said the last word, and all the information reached Hale's ears word for word.

"That's how it is!" Hale shouted hysterically in a shrill voice, "It's the damn Boat Song Kingdom! That haunting Boat Song Kingdom was taken away by Russell Morgan when he led his people to abandon land, isn't it?"

Lukka frowned, now that this information had been heard by Hall, he had no choice but to deal with the other party.

He slowly raised his amethyst staff.

Hall sneered: "Do you think that by killing me, you can keep the secret? It's naïve, you look down, the Void has already heard it, he will soon find your ship and open the passage again!"

Lukka didn't answer, and chanted a mantra softly. This time, he didn't hold back, and directly used his maximum energy to cast the highest level attack spell that he could cast as an intermediate mage: the Ice Orb.

This is a level 6 spell of the plastic energy system, and strictly speaking, the difficulty has slightly exceeded the limit of intermediate mages. Lukka mastered this spell, which also showed that he was not too far away from the breakthrough time of the high-level mage.

The effect of the level 6 spell was of course extraordinary, a sphere the size of a watermelon, completely made of ice, flew smoothly towards Hall, and as it flew, it continued to shoot out countless tiny ice arrows. These ice arrows automatically seek out their targets and shoot at each other in a continuous manner.

Hall raised his left hand, which was still intact, waved it lightly, and said with a sneer: "Do you think that the Divine Envoy of the Void is so easy to kill?" [.]