"Although Kurofuchi Village is not a popular tourist attraction, it was once a well-known resort. Shops and hotels here were once lined up in rows. Because of this, Kubo Hotel has a fairly good passenger flow and considerable profits." Sayuki Kubo

Narrating. "But three years ago, the hot spring suddenly stopped gushing... The villagers tried many methods but could not bring the hot spring back to the village. After expert diagnosis, the result was that the hot spring had been naturally exhausted."

"Will hot springs be exhausted naturally?" Mitsuhiko asked strangely. "I remember, aren't hot springs formed by ordinary water flowing into the ground and heated by underground magma? How could it be exhausted?"

"If the geothermal heat for heating hot springs is a limited resource, then it is possible." Seeing that Kubo Sayuki was a little unprepared for this question, Chiba answered on his behalf. "For example, the crustal movement caused the magma to cool down or something. But if it is no longer gushing

If so, there are two possibilities. One is that the access to the hot spring itself is blocked or directed to other directions due to geographical changes; the other is that there is a problem with the treatment method of the hot spring water, resulting in local groundwater losses that cannot be replenished, and ultimately

Totally wasted."

"After the hot springs suddenly stopped flowing, the meaning of the existence of hotels in hot spring tourist resorts disappeared," Kubo Sayuki continued sadly. "One hotel after another closed down, and until now, we are the only one left.

We are fulfilling our responsibilities. But even we plan to close our doors this year. After all, there are no hot springs and no customers will come."

"Suddenly the flow stopped?" Qianyu was a little surprised after hearing this word. "You mean, the hot spring itself stopped gushing without any signs of depletion?"

"That's right."

"How could..." Qianyu murmured in disbelief. "How could this be possible???"

"Is there any problem with the 'sudden flow interruption'?" Haiyuan Ai asked immediately after taking a look at Qian Yu's expression.

"Generally speaking, the depletion of hot spring flow is usually due to crustal movement or water depletion. Both of these will have obvious precursors..." Qianba explained. "The former will have precursors such as earthquakes, while the latter will definitely cause the depletion of hot springs.

It’s gradual. Both of these will have very obvious precursors.”

"Then there is another possibility," Conan listened to Qianyu's story, with a strange light shining in his eyes. "A very small-scale crustal change caused the hot spring to stop flowing, but the chance of this is quite small..."

"By the way, I seem to have some impressions of the Black Abyss Village..." Qianyu suddenly seemed to have caught something. After thinking for a long time, he slowly said. "Here in the Black Abyss Village, it seems to be the gold mine that Takeda Shingen focused on mining.

one?"

"Yes, here was the best gold mountain at that time," Conan nodded. "At the same time, this is also the location of Takeda Shingen's secret hot spring."

"Not only this... but also the origin of the name Kurobuchi Village," Qianyu curled her lips. "It is said that the name Kurobuchi Village came from the sudden mass execution of Jinshan miners by Takeda Shingen's soldiers, and the blood

The water, banks, and even the bottom of the creek at the foot of Jinshan Mountain were dyed black..."

"Why are they doing this?" Ayumi said angrily. "It's too much!"

"Oda's troops came over, and the Takeda family couldn't stand it anymore, so they were forced to destroy Jinshan." Conan replied.

"Then why not destroy the hot springs together?" Mitsuhiko asked. "Hot springs can be blocked, right?"

"It can't be blocked. After all, the flow of the hot spring should not be too small. There was no cement used to block the small spring in that era." Qianyu shook his head and said. "If you really want to harm Oda's army,

, in fact, there is a better way to deal with it, that is to wash the bodies of the miners, cut them into pieces, tie them with iron or gold nuggets, and throw them into the spring. Make sure that Oda Nobunaga's wounded soldiers come to heal their wounds.

When the time comes, one will die."

"It's too cruel..." Hui Yuan Ai sighed.

"What does this mean?" This time, it was not Mitsuhiko and the others who asked the question, but a somewhat surprised Conan. "I remember that corpses cannot be soaked in water, otherwise it will pollute the water quality, but why is this?"

"Clostridium botulinum, Clostridium botulinum produced by corpses in an anaerobic environment, will prevent the cholinergic nerve endings of people bathing in hot springs from releasing acetylcholine, and will not be able to conduct nerve signals. This will cause the patient's nervous system to

Devastated by symptoms, he eventually died from severe symptoms such as difficulty breathing."

"You really know a lot!" Tadao, who was just watching everyone quietly, exclaimed. "This is all very profound knowledge!"

"In addition, Qianyu, your thoughts are really..." Mitsuhiko was obviously a little frightened. "It's really amazing..."

"Do you want to go to the hot springs and have a look?" Sayuki Kubo thought for a while and asked. "Perhaps you can recreate something?"

"It's too dark. Let's go tomorrow." Qianyu glanced at the already darkened sky. "Or if you have a powerful flashlight here, just pretend I didn't tell you."

"It's really not safe to go now," Dr. Ali on the side also dissuaded. "It might be a good choice to go tomorrow morning."

"Okay!" Kubo Sayuki nodded and said with a smile. "Then let's go and have a look tomorrow!"

at this time...

"Hey! Is there anyone there?" A loud greeting came from the entrance.

"Huh?" Everyone was stunned - at this time, will anyone come?

"Tadao," Kubo Sayuki ordered Tadao. "Call Liangzo over and help everyone clean up their rice bowls. (Remember? Everyone was eating, and during the conversation, everyone was talking about what they were eating.)

I'm going to receive guests."

"Where's the boss?" the voice came again.

"Come on, come on!" Saying that, Kubo Sayuki ran over. "Hello, I am the boss lady here! Do you two need anything?"

Qianyu thought for a while, clasped his hands together, and almost completed the post-dinner etiquette (go-chiso-samadeshita, which was intended to thank the host for providing such delicious food), and then quietly went to the other side of the hall to peek at the movement at the entrance.

At the entrance, two muscular men, one tall and one short, dressed in adventure attire, carrying backpacks and nylon fishing rod bags, were looking at the hotel lobby.

"Come to a room, we want to stay for a few days," the tall man took out his wallet and said. "How much does it cost?"

Before Kubo Sayuki could answer, the tall man had already placed a stack of Fukuzawa Yukichi (1,000 yen bills) on the front desk. "No need to change, this money should be enough for our room charges these days."

"Interesting..." Qianyu raised an eyebrow.
Chapter completed!