I was in Conan, and after picking up Xiao Ai, I was chased by Hongzi.

"But, will its effect be that good? The red measured in that experiment is closer to pink, which is much different." Mr. Peony questioned.

"Yeah, you're right, but in the dim light of the bathroom, it looks like blood."

"Okay, even if this is the case, urine cannot cause chemical reactions. Urine does contain ammonia, but it is either neutral or acidic, and it absolutely cannot be strongly alkaline." Mr. Mudan once again questioned.

"Yes, that's why I need something." Otoi Hiroshi said.

"Is this a bottle of ammonia water?" Conan walked over holding the bottle.

"As long as you pour this into the toilet water tank first, and then put phenolphthalein in the water tank, the toilet will produce a chemical reaction. Even if there is an ammonia smell, it is normal in such a dirty toilet."

"That's true." Mr. Peony admitted.

"But where did you find this?" Mr. Yotsuya asked curiously.

"While Brother Otoi was explaining the phenomenon of ghosts to everyone upstairs, I sneaked into the room and found it - this is Uncle Banmachi's room."

Conan pointed to the speechless Banmachi Kikuji next to him.

"I also found other things, such as phenolphthalein, chloroform and a very scary videotape." Conan said exaggeratedly.

"Video tape? Is it?" Everyone was surprised.

"That's the ghost-like woman we saw in his room just now." Conan drooped his hands in front of his chest and made a grimace.

"But how did he do it? Didn't he find it in Mr. Otonashi's room the first time?" Mr. Yotsuya asked curiously.

"This is too simple." Hiroshi Otoi spread his hands, "Just use the common antenna of this apartment."

"First connect the antenna cable to the output port of the video recorder in your room, and then transmit the image on the video recorder to the antenna. This common antenna will transmit the image to the TV in Mr. Otonashi's room."

"But, to do this," Mr. Mudan was a little confused, "you have to change the TV in Mr. Otonashi's room to a channel that can play video tapes."

"Besides, if you don't turn on the power first, even if it switches to..."

"Just have a universal remote control." Otonashi interrupted him.

"As long as you confirm the manufacturers of the TV and VCR, and then use a remote control that can work with any model, you can control the TV in other people's rooms at will."

"As long as I understand the technique, even an old man like me can do it."

"Then the image that was created in my room just now was that of you, an old man..." Banmachi Kikuji said.

"Yes, that's the scene I asked Conan to ask Mr. Otonashi to show," Otoi Hiroshi nodded, "but I just borrowed the video recorder in your room."

"As for how you used the remote control to control the video recorder, I think it was through the window of Mr. Otonashi's room facing that building."

"You stand on the wall and you can send the signal from the remote control."

"And you only need to play the video tape in your room first. Even if you don't see the picture, you can still choose the channel by sound."

"Finally, before the sun goes down, pour some chloroform on the window frame and make us all in the house unconscious."

"No matter which one of us suddenly wakes up from a dark room, he will see that terrifying phantom before his consciousness is fully awake."

"That's it..." Mr. Peony said in surprise.

"But why do you spend time pretending to be a ghost?" Mr. Otonashi looked at Banmachi Kikuji curiously.

"Because he wants to scare Mr. Otonashi and bring people here. If he can force Mr. Otonashi to move away as well, his goal will be achieved."

"The reason why he did this, if I guess correctly, is to cover up the crime he committed four years ago." Hiroshi Otoi directly turned everyone's attention to Banmachi Kikuji.

Banmachi Kikuji's expression suddenly changed, and his back molars kept biting.

"Are you talking about the woman who was burned to death four years ago..." Yoshiichi Otonashi asked curiously.

"I remember you said you saw floating will-o'-the-wisps on the empty building next door, right?" Otoi Hiroshi said.

"Yeah, that's right." Yin Wufang nodded.

"Actually, that's not a will-o'-the-wisp, that fluttering red light is the fire on the cigarette." Hiroshi Otoi lit a cigarette.

"As for the white and cyan light you mentioned, it was the light emitted by someone secretly viewing their mobile phone."

"Ah? Is there anyone still active in that building?" Otonashi said in surprise.

"Yes, he saw that building. It has been abandoned there and has not been dealt with. He usually hides in it."

"He is one of the two killers who was witnessed four years ago." Hiroshi Otoi said firmly.

"I think Mr. Banmachi is the other murderer whose appearance was not clearly seen. After Mr. Otonashi discovered the red star on the cigarette, he was deeply afraid that someone living there would be exposed, so he created a haunted house. rumor."

"That's why we successfully scared away the residents on the second floor who could peek into the opposite building one after another."

"The reason is to hide the accomplice who will be the only one who can prove that you are the murderer once the incident is exposed." Hiroshi Otoi looked at Banmachi Kikuji.

"I think you also heard the sound of destruction..."

As soon as Hiroshi Otoi finished speaking, the sirens of police cars were heard outside the building.

This was also the call he asked Conan to make in advance.

Because he needs to contain everyone to prevent Banmachi Kikuji from being exposed and escaping.

I have to say that Conan's kid's mobility is quite good.

I just told him my thoughts, and he perfectly restored all the haunted events.

"Damn it, you all get out of my way." He rushed out of the building.

Standing on the outermost floor was Mao Lilan who had been shivering.

For his current situation, this female high school student who has been afraid is the easiest target to break through.

"Xiaolan! Stop him quickly!" Mouri Kogoro shouted.

"Ah?" Mao Lilan was confused.

"Get away from me quickly, or I will kill you!" Banmachi Kikuji put the evil ghost image on his clothes over his head, trying to scare her away.

Otoi Hiroshi smiled helplessly when he saw this, what kind of operation is this, brother...

Mao Lilan first exclaimed, then lowered his eyes and looked speechless.

"Who are you trying to scare?" she said, rolling her eyes.

[Question: Each bottle of soda sells for 1 yuan, and every two empty bottles can be directly exchanged for a bottle of soda. If I give you 2 yuan to buy soda, how many bottles can you drink at most? 】