"If you want to turn on the lights above, you have to go to the terrace at the top." Margaret said, "But the ladder can only go so far."

The three of them groped around on the platform at the end of the ladder for a while, but couldn't find any mechanism to operate, so they had to return the way they came.

"Why did Mr. Price build such a tower?" Bella said, "If you can't light the lights at the top, won't you lose the meaning of a lighthouse?"

"I don't know about that." Margaret said.

"Could it be mentioned in the old man's journal?" Elena asked.

Since Mr. Price is an old sailor, he must have a habit of writing logbooks, right?

"Well, I've thought about it too." Margaret replied, "But my grandfather's logbook is very large, and I have probably looked through it, and the contents of the records are basically all previous experiences, and there is no description of this place."

The three of them returned to the study on the second floor.

"In that case, let's look for clues in this villa, shall we?" Elena said, "After all, you usually have to hide things in a larger space."

Margaret agrees with Elena.

So, the three of them began to look for mechanisms in the villa, but such a big place, it was really troublesome to find, and Old Man Price had a strange personality, and designed a lot of strange things, many of which looked like buttons, but they were just decorations.

"It's really shocking." Elena sat in a chair in the living room in frustration, spinning the globe in boredom.

"Of course it's not that easy." Bella said, "Wouldn't it be boring if it was so easy to unravel?"

"Really, what the hell is grandfather hiding here......" Margaret also listlessly fiddled with the globe with Elena.

"Ah, let's race, who dials the most laps?" Elena suddenly came up with a good idea.

"Well, I won't lose to you!" Margaret said confidently.

Then the two of them began to take turns turning the globe and counting the laps at the same time.

"I said, you two, it's going to break things." Bella said.

"It's okay, it's so easy to break!" Margaret said, "Huh? How many laps are it now?"

"Seven and a half circles, right?" Elena replied.

"No, it should be counted as eight laps." Margaret said, "You see all the Aegean Sea."

"No, no, starting from the Atlantic, you have to go to Iberia at least eight times." Elena said.

"Almost, just across the Mediterranean."

"It's far away, it's more than 40 degrees."

"I mean, you two, aren't you naïve?" Bella said helplessly.

"Bella, you're here to judge." Elena said.

"I don't want to judge." Bella simply refused.

"I said, even if it's eight laps, it's not much worse anyway." Margaret said.

"One time is not much, but if this is the case, then many times add up, and it is a lot worse!" Elena said.

"Wait." Bella seemed to have a sudden thought.

"yes, Bella agrees with me, right?" Elena said.

"Bella, you can't be partial." Margaret said.

"No," Bella replied, "I seem to understand."

"Understand what?" Elena asked, confused, "Is it a treasure thing?"

"Almost." Bella smiled, "Let's go."

"Where?" Elena asked.

"Let's go to the study first." Bella replied.

After speaking, the three of them came to the "captain's room"-like study on the second floor.

Bella picked up the compass and binoculars on the table, and said, "Let's go to the tower again."

Immediately afterward, the three of them walked out of the villa and came to the outside tower.

"I said, Bella, what are you doing with these?" Elena asked, puzzled.

"Look, aren't all these windows open outside?" Bella said.

"Yes," said Margaret, "and it's all sealed from the inside."

"Actually, it's true that they didn't open, but it's not these windows that are sealed." Bella held the compass horizontally and carefully walked up the spiral ladder.

Stop as you pass the first window, then continue a few steps ahead. After confirming the direction of the compass pointer, Bella placed her hand on the wall and gave it a hard push.

There was a "boom", and a large hole opened in the wall - a window, to be exact.

Elena and Margaret were incredulous and looked at Bella in amazement.

"Actually, the windows outside are closed, but they aren't sealed." Bella explained, "And the wooden bars inside are nothing more than 'fake windows' in disguise."

"False windows?" Elena still didn't quite understand.

"Think about it, when we were just inside, we couldn't see the outside, so how do we calculate the number of floors we've walked on?" Bella continued, "The only signposts here are these sealed windows. We take it for granted that these are the windows on the outside. So every time we pass through a door, we think we've come full circle. And when we came up just now, we walked through six so-called "windows" and thought we had reached the top. In fact, the so-called sealed "windows" in the interior of this place are not strictly followed by one circle, but the "spacing" is cleverly shortened. To put it simply, there is a "window" every five-sixths of a circle, and when we count six "windows", in fact, there are only five turns. In other words, we didn't really go to the sixth level."

"But how do you know where the real window is?" Elena asked.

"That's the compass, of course." Bella replied, "Every window is facing due south, just follow the instructions of the compass needle and find the exact location."

As she spoke, Bella opened the five windows in turn, and just as she opened the fifth, she heard a "click", as if some machinery had started, and then with a "boom", a ladder descended from the ceiling and joined the end of the spiral staircase.

The three of them came to the real sixth layer.

Bella opened the sixth window, and another ladder hung down.

Finally, they came to the terrace of the lighthouse.

Bella placed the lantern in the center, and several mirrors around it reflected the light in the direction of the study.

Bella took out her binoculars, checked them, and then took Elena and Margaret back to the study.

The light from the lighthouse shone right on the rudder in front of the desk.

Bella slowly turned the rudder so that the place with the crystal was facing the light.

The light was refracted by the crystal and hit the mast of the sailboat next to it. The mast, along with the sails and cables, formed an arrow-like sign on the wall.

From the position of the arrow, press hard, and the wall is dented. Then, a gap opened in the ceiling of the study, and an anchor slowly hung down, on which hung a chest.

"Presumably, this is the treasure that Mr. Price is talking about." Bella said.