"Let's do it together!" When Conan saw the tab, he immediately understood how to open the secret passage. "Pull this up!"

The main hall is heavy, but the board attached to the pull chain seems to be light. After all, since such a heavy thing as the main hall has been moved, the entire mechanism must have been discovered, and there is no need to set up any more obstacles.

When the board was pulled up, everyone was amazed.

More than 10 steps lead from the ground to about two meters underground, and at the end of the steps, there is a secret passage made of stone!

"Don't go in yet," Conan dissuaded as Genta and the others were in a commotion to go in. "There may be no oxygen!"

"It's okay, there's plenty of oxygen in there." Tadao said lightly.

"How do you know... Sayuki Kubo was wondering about this question, but she heard Conan's voice with some relief.

"Brother Tadao, you already found this place before, right?"

"Now that you know, do you need to confirm with me again?" Tadao curled the corners of his mouth slightly, and smiled at Conan. "So I don't have to hide it anymore!"

"Did you find it a year ago?" Conan had a look of surprise.

"How do you see that?" Tadao raised an eyebrow.

"Guess," Conan shrugged. "The main thing is that Brother Tadashio has disappeared for more than a year, this kind of thing is really unusual, so I thought it was Brother Tadao who had encountered some adventure."

"Unusual?" Mitsuhiko was a little stunned. "Is there something strange about Brother Tadao?"

"Brother Tadao, you like the number 10, right?" Conan spreads his hands. "I've seen the warehouse here before, and I've seen Tadao brother's actions in the morning when he sorts out the teacups and plates. You like to organize your teacups and saucers in units of 10, and this can also be done from... Forget it, when I didn't say it. In short, you like 10, you like it to the point of being paranoid, so paranoid that you had to put away your own teacups yesterday when there were 11 people in the evening discussion, so that there were only ten teacups left. (Conan wanted to say that the shotgun in Tadao's car had 10 solid bullets and 10 flowering bullets, and 10 packets of compressed biscuits in the bag next to it, which was enough to prove Tadao's fetish.) However, if Conan said it, it would reveal the fact that he had seen his shotgun, so Conan couldn't say it. ）

"But, according to Sister Saxue, you came back after working a little over a year. Brother, there is a delicate Chinese knot with a metal logo hanging from your car, which is not an ordinary thing, but a small gift from an engineering company near Mihua. The company is known for its relatively good salary and room and board – and of course, the barrier to entry is high. I once knew something about that company, and the treatment of workers was a stable 5*8 job per week, with a net weekly salary of 24,000 yen. In this case, the amount of money you can save should be around 1.25 million yen to 1.5 million yen. Previously, Ms. Sayuki had inadvertently told me that Mr. Tadao had to pay about 200,000 yen a year. In other words, the money you earn will be able to pay for 6 to 7.5 years. Such fragmentary numbers are probably a great torture for you who are close to obsessive-compulsive disorder, isn't it? So if you don't have a specific purpose, you will never quit at random after a little more than a year of work. Therefore, I judge that your reasons for leaving and your reasons for coming back are most likely not very simple. ”

“。。。” Tadao remained a little overwhelmed as he listened to Conan's reasoning, but replied with a wry smile after Conan's conclusion. "Okay... Let's not talk about that for now, why don't you go down and have a look since you've found this place? Although it is right to say that it is empty ... ”

"Hmm... Conan looked into Tadao's eyes, with the surprise of having his secret punctured, the surprise of being pointed out with habit, but he did not have the scruples of being perceived with malice. "Alright, let's go down and have a look."

Since there is no malice, then there is no need to pierce the secret, let him reveal it when he wants to show it.

。。。

"The complete masonry structure... Sayuki gently pressed her fingers against the wall, letting them slide as she moved under her feet. "This secret passage is very exquisite."

"It always feels like walking in the dark passages inside the pyramid of the pharaohs... Yuan Tai sighed. "Exciting, cool, humid air, shivering with excitement."

"Pharaoh's pyramid is not an easy place to enter," Tadao said lightly, not observing the surrounding scene, but only using a flashlight to light the way in front of the children walking in front. "Tutankhamun's pyramid, for example, is a cursed place to kill. As long as anyone who went in, none of them came out alive. ”

"That's fake, isn't it?" Conan looked confused. "If I remember correctly, only one or two of the more than a dozen people who died unexpectedly ... And many of the first people to enter the Pharaoh's Mausoleum also lived for a long time, such as the daughter of Carnarvon V who lived until 1980! ”

"It's over... Just as the two of them were discussing the unsolved unsolved case more than half a century ago, Yuan Tai, who was leading the way in front, suddenly said in surprise. "Damn, is this just an ordinary secret passage?"

"It's the end?" Conan was a little surprised. "Is such a gorgeous masonry paved as just an ordinary hiding place?"

"It was probably a place to store weapons or food, but apparently it had all been moved away a long time ago, so of course there was nothing." Tadao spread his hands. "Alright, it's time for us to go back!"

"Wait a minute," Conan's expression suddenly became a little surprised. "Brother Tadao, don't you think the air here is too fresh?"

"Someone must have changed the air here, right?" Tadao said he really didn't know what was going on now. "Don't ask me, I haven't been to this village for a year."

"Not the kind of air that is stored here after ventilation," Conan said, twitching his nose. "It's the freshest air that comes directly into it."

"How is that possible?" Tadao looked incredulous. "We have walked more than forty meters in this dark passage, how can we feel the fresh air coming directly from the convection?"

"yes," Sayuki was also a little confused. "After all, the excavation can only go up to thirty-three, right?"

"Digging can only go up to thirty-three?" The little ones were amazed. "What does that mean?"

"An ancient proverb used for miners," Conan explained. "In ancient times, the first entry was about 1.8 meters, and the thirty-three entrances were about 60 meters. If the excavation of the mine is too aggressive, digging more than 60 meters, then air convection will be difficult, and the lives of the miners inside may be in danger. Wait a minute... Could it be that ... ”

Conan suddenly leaned against the stone wall to the side, and after a few seconds of silence, he smiled, and then pressed on a wall tile. "The color of this brick is not quite right, and there is fresh air coming out of it...

The rumble of the machinery startled everyone, including Tadao, as the stone wall against which Conan was leaning suddenly recessed inward, revealing a stone chamber with windows illuminated by sunlight. There was a stele in the middle of the stone chamber, and an object under the stele immediately caught everyone's attention.

"Ahhh!!hhh Screams immediately echoed through the secret passages.

A half-white ossified corpse, dressed in a brown trench coat and jeans, was half-lying at the base of the stele.

"Father ... Father? Sayuki Kubo's trembling voice surprised everyone again.