Lu Yuan stood in this so-called bedroom, he was thinking, but this was also the first time since he entered this copy that he couldn't even find the direction of his thinking.

By this time, he had already surveyed the entire room. And the following conclusions were drawn.

First, in this room, it is absolutely impossible for someone to enter from the outside after closing the door.

Second, it is absolutely impossible for anyone to get out of this room after the door is closed, unless that person has the key.

Just these two simple points turn the entire space into an absolute secret room. It was so sealed that it was impossible to stuff even a letter in, because Lu Yuan couldn't even find a crack that could stuff the letter.

So how did that letter end up next to Ichiro Sato's pillow?

In fact, here, I can tell you some little knowledge, that is, in various suspenseful criminal investigations or comics, the method of unlocking the secret room is very simple, that is, reverse logic.

To put it simply, if the book tells you that you can't do it, you think the other way around.

Let's take this secret room at this moment as an example.

Let's start with the letter, if it is impossible for the letter to come in from the outside, then the letter could only be in this room. From this, it can be imagined that someone must have set up a mechanism without anyone knowing, so that this letter, which originally existed in the room, appeared next to the pillow of the old man "Ichiro Sato" while he was sleeping.

However, this idea immediately made Lu Yuan reject it, because at the dinner on the island, Ichiro Sato once said that when the letter was first discovered, the notes on it were not dry, and after verification, it can be determined that those notes were written in blood.

And blood is such a thing, it is difficult to get moist again after it dries up, even if there is some way to make the blood stains fresh again, it is impossible to have no effect on that letter at all, even if there is some genius who can make a letter carry in this airtight room for several months, and then appear next to Ichiro Sato's pillow one night, and by the way, it can make the note look like it has just been written, then the mechanism is too complicated.

Such a complex agency, in the subsequent investigation, it is impossible not to find any traces, Lu Yuan has reason to believe that the Sato family's investigation ability is definitely not worse than the police, and even a little more powerful than the police.

To sum up, while Lu Yuan ruled out one idea, he also came up with another idea.

It's a terrifying and frustrating idea, but it's also the one that best explains it.

Therefore, Lu Yuan looked at Ichiro Sato, "That Mr. Sato, I want to ask you something." ”

"Please." Sato replied lightly.

"Do you in this room all the time?"

"Huh?" Sato obviously didn't foresee Lu Yuan asking such a question, and a little anger appeared between his eyebrows.

"Hey, don't be angry, I asked this to solve the puzzle that has puzzled you for thirty years, otherwise, I wouldn't be too lazy to care about your old urine."

Ichiro Sato took a slight breath, "Of course you have to pull!" He replied.

"Oh, what about the toilet, this is the little door." Lu Yuan walked to a small door on the edge of the bedroom and asked, this small door is also the only door in the entire room that has not been opened.

Ichiro Sato nodded.

Lu Yuan pushed the door open and found that there was a very special toilet inside, it was very narrow, and it was more like a fire hydrant with an opening at the top than a normal toilet.

As long as the user puts the wheelchair backwards onto the toilet and uncovers the fabric under the wheelchair, it can be directly convenient, convenient, and can also be flushed to wash the buttocks, which can be described as clean and convenient.

(Don't ask Lu Yuan how he knew about this kind of thing!) You color embryos)

Lu Yuan looked at the disabled person sitting on the toilet in front of him and seemed to be very satisfied.

So, I have to ask one more question, do you usually eat in this bedroom?

"Of course not, I have my own restaurant, and the meals are staffed."

"Oh" Lu Yuan nodded, "Then, you always have to have a little snack or something, for example, you will be thirsty at night, want to drink some tea, stomach upset in the middle of the night, want to eat some biscuits or something, I think the yard around here is not small, you can't turn your wheelchair to the canteen in the middle of the night to turn over the stove." ”

If you look at what Lu Yuan said, he is really underwhelmed, but Ichiro Sato is also a person who has seen the world, and he is even more angry if he doesn't show it.

"Of course not, every day when I enter here, there will be a small meal and tea specially prepared for me, of course, these things are Sato Takeru and I come in, put the food on the table, after that, he will go out, during this time, he has been by my side, so it is impossible to do anything in the house, and besides, I don't believe that Sato Takeru will do anything against me"

"Alright, alright." Lu Yuan interrupted the other party's words, "Don't be nervous, I'm not suspecting that your old butler is not loyal to you, I just want to confirm whether you are eating in this room and pulling here, that's enough." ”

Ichiro Sato's eyebrows showed a hint of doubt: "Why are you asking this?" ”

"Of course, I want to confirm if your room has the conditions for a person to go down." Lu Yuan said, and as he spoke, he was still banging on the wall, as if he was looking for something.

"What do you mean by that?"

"I guess I've solved the mystery of why your letter came to be." Lu Yuan said.

"What?!" At this time, everyone was also surprised.

Lu Yuan raised his hand and waved it slightly, signaling everyone to be quiet first.

"Actually, I can't say a solution, I just thought of a very curious, but most likely way, to make a new letter appear next to your old pillow."

"What way?!" Ichiro Sato seemed a little nervous.

"Heh, what else can I do, that is, someone has finished writing and put it next to your bed." Lu Yuan said.

Ichiro Sato shouted, "Are you a fool? As I said, no one can enter this room without permission. ”

"Ahh

"What?!" Ichiro Sato didn't seem to understand.

"To put it more clearly, I think that there is actually someone in this room of yours, this person did not enter this room that night, but he has been staying in this room, for months, even years, he has never gone out!" Lu Yuan continued to bang on the wall of the room and said.

"In this room, maybe there is a small and dark little dark compartment, that person hides in it all day, every night when you fall asleep, he sneaks out, eats a few of your snacks, and when you go out during the day, he uses your toilet to excrete, he lives in this room, and stays with you every night, but you don't know."

Hearing this, the people around him swallowed their saliva unconsciously, and they didn't know why, Lu Yuan's words made people feel a sense of horror.

"But every day when I go out, this room is locked! Then he," Ichiro Sato's tone changed slightly, and he began to look around, as if looking for something he couldn't see.

"I said, that person doesn't need to go out, he has lived in this closed room for most of his life, thirty years, maybe he has turned into a white skeleton, and he stays by your side all day."

"Of course, maybe it's been thirty years, and he's not dead yet, and now, he's hiding nearby, listening to the conversation between us."

When he said this, Lu Yuan had already come to the bedside behind Ichiro Sato

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