The entrance to the mermaid's shelter is not large, only allowing three people to pass side by side, but the passage is quite long, at least a hundred meters away.

In order to prevent any mechanism in the passage, Shu Yunwen first asked Chengshi and Akemi to explore the way, and after making sure that there was no problem, everyone walked towards the passage together.

It was pitch black in the passage, Shu Yunwen and the others quickly walked to the end of the passage, stretched out their hands and pushed open the huge shell door in front of them, and then a soft light came, and then a huge karst cave about five hundred meters long and two hundred meters wide appeared in front of everyone.

In this cave, there are not only verdant trees, beautiful flowers and plants, but also a river running through the cave. On both sides of the river, there are four wooden buildings, one of which has some household items and even a few clothes to hang outside, and at the end of the cave, a tall wooden building.

Shu Yunwen and the others all looked at the mermaid shelter with interest, and then Luyili suddenly pointed to the top of the cave and asked, "Strange, isn't this the inside of the cave? How can there be light?"

"It's supposed to be magic. Shu Yunwen looked up at the long strip of light source that ran through the entire cave at the top of the cave, and said casually, "Don't you look at the light source above your head?"

Shu Yunwen's words fell, and Tsukamoto Shumei and the others were all stunned, and then Shumei suddenly realized: "...... I see, it's the river that forms the waterfall, right? But if the river had been transparent, wouldn't it have been ...... long ago."

Before Tsukamoto finished speaking, Koizumi Hongko explained, "...... This is a magical effect, where is it so easy to be discovered? The mermaid mage who built the mermaid shelter must have used some special magic to intercept the light source shining into the river and go here—this method is also common in mermaid shelters built on the bottom of the sea......"

Koizumi Hongzi said, raised his steps and continued to walk forward, and at the same time spoke: "Yunwen-san, you also found out, right? The house by the river should be inhabited......

"That's right. Shu Yunwen nodded, "There is also a clothes pole outside that house, and the clothes on it look very new, and they are definitely from the last days...... And the building at the end of here, it should be the mermaid altar, right?"

"Yes, mermaids are used to burying the corpses of dead mermaids next to the altar, and the long-lived grass I am looking for should be there!"

Koizumi Hongzi said, suddenly took out a magic broom from her skirt and said, "Yunwen-san, I'll go pick the evergreen grass first." Evergrass is a bit of a hassle to pick and may take some time, so please look for the mermaid - she should be right here!"

"Okay, no problem. ”

Shu Yunwen's words fell, Koizumi Hongzi immediately flew to the altar on a broomstick, and then Shu Yunwen gave another order, and Chengshi and Akemi also searched while walking towards the house by the river.

It didn't take long for Shu Yunwen and the others to walk in front of the obviously inhabited house, pushed the door and walked in, and what they saw was a room that was more feminine. There are not only electric lights in the room, but also refrigerators, ovens, TVs, DVD players, video tapes, and more - there are even a few posters of Yoko Okino on the walls of the room!

Shu Yunwen and the others walked around all the rooms and found no mermaids, and then walked out of the room again and continued to search along the river.

Everyone walked forward for about a hundred meters, and Cheng Shi's voice suddenly came into Shu Yunwen's mind: "Lord Yunwen, we found that mermaid, she is hiding in a small cave in the river." Also, she is really exactly the same as Miss Junhui!"

"Did you find it?" Shu Yunwen walked to the river according to Cheng Shi's guidance, looked down for a while, and said:

"Miss Yahui, right? I've already found you, it's useless to hide, why don't you come out and talk?"

"Well, let's just talk about why you want to kill!"

......

Four o'clock in the afternoon, American Shrine.

In a certain room, many islanders and tourists who had received a notice from the police had arrived, sitting together and chatting in a low voice.

In front of everyone, Uncle Maori, who had been beaten by a certain poisonous hand and was unconscious, sat with his head bowed, while Conan stood in front of Uncle Maori, listening to the islanders saying things like "Miss Junhui is also dead" and "The dugong festival looks like it's going to be uneventful", and his brows were furrowed and thoughtful—

In other words, why do these residents of the island say that the dugong festival cannot be held......?

Conan was thinking about it, and Masaki Kobayashi, who was sitting in the front row of everyone, couldn't help but speak: "Detective Maori, didn't you come to us to tell us who is the murderer of this series of cases?

When Kobayashi Masaki's words fell, Conan immediately replied in Uncle Maori's voice: "Mr. Kobayashi, please don't worry, we have to wait for a few people to ......"

"Do you want to wait for someone?" Kobayashi Masaki frowned, and was about to ask who he was waiting for, when suddenly, he heard the door of the room open with a "bang", and an old and short figure appeared at the door.

Everyone in the room heard the sound and turned their heads to look at it together, and then many of the island's residents changed their faces and exclaimed:

"This is a longevity woman?"

"She—Why is she here?"

"What's going on?"

“......”

Conan frowned again when he listened to the discussion of the islanders, and then stretched out his hand and pulled Kobayashi Masaki and said, "Mr. Kobayashi, why are everyone so surprised to see the longevity woman!"

"Uh...... No, no. Kobayashi Masaki shook his head in a panic, looking quite nervous, "Everyone just thinks that Longevity is old, and now she should rest at home......

"Oh?

Conan nodded with a smile, turned his head, and his expression instantly became serious - sure enough, many people on the island knew that Miss Junhui and Lady Changshou were the same person, but they didn't say anything......

The noise in the room continued, and suddenly, the voice of the policeman came from the door of the room: "Mr. Maori, our police have caught Mr. Menxie in the mountain and are taking him down the mountain." We at the police department hope that you can start your reasoning show after Mr. Menxie arrives......"

"Okay, no problem. Conan answered in Uncle Maori's voice before asking, "By the way, the dark-skinned imp who came with me should have gone up the mountain with the police, right?"

"This ...... I don't know, but the police didn't mention it. The uniformed policeman at the door scratched his head, "Please wait, I'll use the walkie-talkie to contact my colleagues and inquire."

"Thank you, sorry for the trouble. Conan thanked him.

At the same time, on the island of the United States, on the hills.

Hattori Heiji and Kazuha stood in front of a simple grave, looking at the burning incense on the stone platform in front of the tombstone, and frowned:

"Pingji, how can there be a tomb here? This can't be the grave of that mermaid? Also, who would burn incense at such a time......

Hattori Heiji listened to Kazuha's words, pinched his chin with one hand, and squinted slightly: "...... Is it because ...... burns incense at this time?"

"So, is the murderer really the same as Kudo and Yunwen reasoned, is it Miss Junhui?"