The people who brought the gasoline barrels were moving towards them? This was not like a good recruitment... If Qianyu looked at himself from the perspective of a villain, it would be too crazy to do what so many gasoline barrels could do.

"Uh..." Qian Yu's face showed a more subtle expression.

No...No...it must be found a way to find an interface that can say that you have noticed the other party's trace...

"Do you smell any gasoline?" After taking a deep breath, Qianyu asked. "It's the kind of gasoline that can be burned."

"No, are you sure your nose is not wrong?" Officer Shiragou sniffed carefully and asked Conan in a very confident tone. "I asked myself that my nose is still a more sensitive group."

"Gas?" Pu Siqinglan gave a positive answer. "If you say so, I seemed to see the people who came with me smelling gasoline... Wait, if you really smell such a smell, wouldn't it mean that the opposite side might - wrong, if I die, how would they plan to get the reward I haven't paid them yet?"

"By the way, you said there are collaborators," Officer Nakamori asked sternly. "How many of them are there?"

"Many of them were launched by the survivor of that year, and the descendants of the martyrs," Pu Siqinglan arched and turned into a kneeling position under the surveillance of the crowd. "The oldest may be in their eighties or nineties, but the one in charge is a middle-aged man in his fifties. Perhaps it was because the old man was already in his energy. I agreed with them that each person would get what he needed. After the matter was done, I would pay them two million yen as a reward. They should not have planned to give them money to burn them to death, and they would have gained nothing in the end, right?"

"I actually didn't want to comment, but I still have to say you're too naive, Miss S." Kid, the monster thief who released a pigeon, interjected. "If you just talk about treasures, there are too many good things in this castle - as you said before, many of the confidential spaces here are well known to those engineering teams. So no matter how Mr. Kiichi Kasaka designed those exquisite mechanisms, they can use the stupidest way to use the money inside as a bag: for example, just prying out the safe and taking it away, or shooting the safe with live ammunition weapons, destroying the locks, etc. Just take half of the things in a safe like this, it will be enough to recover your dead commission loss, right?"

"This..." Pu Si Qinglan, who was awakened by the monster thief Kid, did not look good.

"You are good at fighting, and you can shoot a few tricks," Kidd sighed. "But seriously, you're still a little naive when dealing with those who have ulterior motives."

Just as they had such a conversation, Qianyu stood there, doing calculations.

Under the standard pool fire model with a diameter of more than 2 meters, the combustion speed of gasoline will basically stabilize at a depth of 3.6 mm per minute, and the combustion point is 100 meters away from here (if Qianyu intends to do it, it can be prepared before the other party reaches this distance line) means that it will take considerable time to flow over. In other words, if Qianyu thinks about some ways to start when they are about to dump gasoline and then burn everyone to death-

It is feasible in principle. The reconnaissance instrument he released before (the release action he made when he revealed Kidd) is electric. If the gasoline is dumped and hits it head-on, the electric parts in the working state should be short-circuited in the gasoline, causing combustion.

As for whether gasoline burning will hurt them... If six people grab the gasoline barrel at the same time and pour it, the oil output per second should be 2-3 kg, which is approximately 3 mm*100 meters*1 cm gasoline belt. With sufficient oxygen, the combustion speed of a pool of gasoline consumes about 3.6 mm per second, meaning that if gasoline is ignited 100 meters away from them now, they will not be able to burn the gasoline and flames near the underground palace no matter how they dump the gasoline barrel, because the gasoline has been burned out before it flows to them.

When did he become so cruel? After calculating, Qian Yu was a little confused.

But the ruthless one was not him, because next he saw the monster thief Kidd next to him, and his actions were even more crazy and direct.

"..." When Qianyu's reconnaissance instruments observed the pigeon released by the monster Kidd, the monster Kidd glanced at the direction of his right ear, and then showed a very serious thoughtful expression. A few seconds later, he released the second pigeon, and the pigeon had a strap filled with two small bottles on its legs.

The bottle looks very thin, and the straps don't look strong. It seems that the type of pigeons can shake the straps off their legs with just a slight shaking. If the straps are thrown to the ground, the two bottles will inevitably fall to pieces, and then they who are close to each other will react again, such as...Boom?

"???" Qian Yu stared at the figure of the second pigeon and disappeared at the gate of the underground palace. Then he turned his gaze back to the monster thief Kid, but found that the other party was also looking at him with interest.

"Forget it, I think we'd better find out what we can leave here without going through the secret passage." In the end, Kidd gave up looking at each other and reminded everyone of the most urgent matters at the moment. "S also said that her collaborators were on top. Maybe now everyone is holding a gun, waiting for us to go up one by one. It's better for us to change the road and go out."

"Is there really a second way in this kind of place?" Xiaolan was worried. "After all, it is a secret passage. If there are other roads, wouldn't it be easy to invade from the outside world?"

"But in other words, if there is no other way, it means that once the other party occupys the castle, it can easily block the residents inside, so that the defense party has no room for turning around." Fei Eri reminded her daughter. "After all, this is a castle that the royal family has lived in for a long time, and the secret passages must be well developed enough. Or, if there are multiple secret passages, I don't think it is strange at all."

"I have checked it out well outside, but I can't check it out carefully inside this door." The monster thief Kid spread his hands. "Don't look at me, I haven't been able to solve the puzzle of the door like you do, so naturally I don't have the chance to come in. But at least from the outside inspection, I can guarantee that there are no potential secret passages. If this underground fortification group must have a secret passage leading to the outside, it must be here."

"As evidence, Miss Pu Si Qinglan also said that 33 people were burned to death, and the person who was not killed still arranged such a mechanism in the underground palace, right?" Qian Yu added. "33 people were burned in the passage, but only 32 died, and one person survived, which means that there is a place to escape the fire. Arranged his own mechanism in the underground palace means that you can freely obtain props. The two overlap, and the most likely situation is to escape from an escape passage in the secret passage, and then slip back through this passage."

"Qianyu," the monster thief Kid suddenly ordered. "You go and close the gate of the underground palace."

Qian Yu raised his eyebrows, then showed a surprised expression that seemed to have seen something very visually impactful.

With such amazement, Qianyu came to the wall and pressed the button to close the gate of the underground palace.

"Gu~~~Gu~~~" When the two white doves released by Kidd flew rapidly into the bottom gap of the underground palace for a few seconds, the gate of the underground palace closed again.

At the last moment before closing, Qian Yu seemed to see a light of fire coming from the other side of the gap.

…………

Remark:
Chapter completed!