Lu Yuan stood in this so-called [bedroom], and he was thinking, but this was the first time he could not even find the direction of his thinking since entering this copy.

At this time, he had observed the entire room and came to the following conclusion.

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

Second, after closing the door, it is absolutely impossible for someone to go out of this room unless that person has the key.

Just these two simple points turned the entire space into an absolute secret room. It was so closed that even a letter could not be stuffed in, because Lu Yuan could not even find a crack that could block the letter.

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

In fact, here I can tell you some tips, that is, in various suspense criminal investigation novels or comics, the method of unlocking the secret room is very simple, that is [reverse logic].

To put it simply, it is the things that the book tells you that you can't do, and you think about it the other way around.

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

Let me talk about that letter first. If this letter cannot be sent from outside, then the letter may only be what was originally in the room. From this we can imagine that someone must have set up a mechanism without anyone knowing it, so that the letter that originally existed in the room appeared next to his pillow when the old man "Ichiro Sato" was sleeping.

However, Lu Yuan immediately denied this idea, because at the dinner on the day Ichiro Sato once said that when the letter was first discovered, the notes on it were not done, and after verification, it could be confirmed that all of the notes were written in blood.

It is difficult for blood to return to wet after it drys. Even if there is any way to restore the blood to freshness, it will not have any effect on the letter paper. Even if there is a genius, you can carry a letter in this airtight room for several months, and then appear next to Ichiro Sato's pillow one night, and by the way, it can also make the notes look like they were just written. This is a fucking mechanism.

Such a complex agency, it is impossible for him to not find any trace in the subsequent investigation. Lu Yuan has reason to believe that the investigation ability of the Sato family is definitely not worse than that of the police, or even more powerful than the police.

In summary, while Lu Yuan ruled out one idea, he also came up with another idea.

This idea is terrifying and crazy, but it is also the one that can explain this phenomenon best.

So, Lu Yuan looked at Ichiro Sato: "That Mr. Sato, ask you something."

"Please say it." Sato responded lightly.

"Do you always shit in this room?"

"Ah?" Sato obviously did not foresee that Lu Yuan would ask such a question, and a little anger appeared between his eyebrows.

"Hey hey, don't be angry. I asked this to solve the problem of 'the puzzle that has been puzzled for thirty years', otherwise I would be lazy to care about your urination and defecation."

Sato Ichiro took a breath slightly: "Of course I have to pull it!" he replied.

"Oh, the toilet is this small door." Lu Yuan asked when he walked to a small door next to the bedroom. This small door was also the only door in the whole room that had not been opened yet.

Sato Ichiro nodded.

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

This kind of toilet is also designed for disabled people. As long as the user rewinds the wheelchair to the toilet and uncovers the fabric under the wheelchair, it can be directly and convenient. After all, it can also be flushed and washed, which is clean and convenient.

Lu Yuan looked at the disabled person in front of him and nodded with satisfaction.

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

"Of course not, I have my own restaurant and I have a dedicated meal."

"Oh" Lu Yuan nodded: "Then, you always have to have some snacks. For example, you will be thirsty at night, want to drink some tea, feel sick in the middle of the night, want to eat some biscuits, etc. I think the yard nearby is not small, so you can't turn your wheelchair to go to the cafeteria to flip the stove in the middle of the night."

Look at what Lu Yuan said, he really deserves a beating, but Ichiro Sato has also seen the world, so he became even more angry without showing any signs.

"Of course not. Every day when I enter here, there will be small meals and tea specially prepared for me. Of course, these things are all Sato and I come in with me, put the food on the table, and then he will go out. During this period, he has been by my side, so it is impossible to do anything in the room. Moreover, I don't believe that Sato will do anything that is not good for me."

"Okay, OK." Lu Yuan interrupted the other party: "Don't be nervous, I'm not suspicious that your old housekeeper is not loyal to you. I just want to confirm whether you are eating in this room and pulling here, that's enough."

A trace of doubt appeared between Ichiro Sato's eyebrows: "What are you asking about this?"

"Of course I want to confirm whether your room has the conditions to let someone go down." Lu Yuan said, and while he said, he was knocking on the wall, as if he was looking for something.

"What did you mean just now?"

"I probably solved the puzzle of why your letter appeared." Lu Yuan said.

"What?!" Everyone said in surprise.

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

"Actually, it's not a solution. I just thought of a very curious but most likely method that can make a brand new letter appear next to your old pillow."

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

"Haha, what else can I do? Someone has finished writing and put it by your bed." Lu Yuan said.

Ichiro Sato shouted, "Are you a fool? I said, no one can come in without authorization in this room."

"Ahhh, I heard it, so I mean, that guy didn't come in without permission, and he didn't even go out."

"What?!" Sato Ichiro seemed to be a little confused.

"To be clearer, I think there is actually someone in your room. This person didn't enter this room that night, but he has been staying in this room for months or even years, and he has never been out!" Lu Yuan continued to knock on the wall of the room and said.

"In this room, there might be a small dark dark square. The man hid in it all day long. Every night when you fall asleep, he secretly comes out and eats a few snacks. When you go out during the day, he uses your toilet to excrete. He lives in this room and stays by your side every night, but you don't know."

Hearing this, the people around him swallowed unconsciously, and for some reason, Lu Yuan's words made people feel a sense of horror.

"But every day after I go out, this room will be locked! Then he." Sato Ichiro's tone changed a little. He began to look around, as if looking for something he could not see.

"I said, that person doesn't need to go out, he will live in this completely closed room for most of his life. For thirty years, maybe he has turned into a bone and stayed by your side all day long."

"Of course, maybe after these thirty years, he hasn't died yet, and he is now hiding nearby and listening to the conversation between us."
Chapter completed!