"Little brother, did you find anything?"

Ning Qiushui was silent for a moment.

"Remember that number behind us?"

Mentioning the numbers behind them, the people who were shocked by the bloody scene before finally remembered this thing that they had long forgotten.

"In fact, except for the 'special situation', the first three doors are indeed not very difficult, as long as you are a little careful."

"When I found out about the numbers behind us just now, I was thinking about what the meaning of this thing is, if it was a simple number, the blood gate would not have left such a wound behind us, to 'emphasize' to remind us of the importance of numbers."

"Then I compared our situation to the situation on the door, it was exactly eight people against eight doors, so what do we have in common with the 'people' behind the door?"

Ning Qiushui spoke eloquently, and everyone listened attentively to his story.

"First of all, gender, this point can be ruled out, just the gender of me and Yunwei is different, if it is the other way around, the dead No. 7 'Anshi' and the No. 7 deceased's father behind the iron gate 'Li Feiyun' are not matched."

"Therefore, we will not correspond to the 'people' of the Iron Gate to be gendered."

"After excluding the gender, I noticed another point, which is that we entered the blood gate this time with a total of four teams, which happened to be a team of two."

"You carefully recall the numbers on yourself and your teammates who entered the blood gate together, and then look at the iron gate."

When they heard this, they hurriedly did so.

After a brief recollection, they quickly discovered the key problem!

The two people who enter each house are connected by numbers, which can correspond to the two iron gates in the four directions of east, west, north and south!

"Ning Qiushui, what do you mean...... The two "people" locked in the iron gates in these four directions are also a team? ”

Under Ning Qiushui's prompting, Xu Gang seemed to have grasped something very important!

"You can simply understand that they have the same purpose."

"Let's assume that this inference is true, and then let's-"

"Neither nurse '1' nor the deceased's sister '2' want the murderer to be caught."

"Superintendent '4' and the deceased's mother '3' hope that the murderer will be caught."

"The two patients, '5,6', don't want the killer to be caught."

"Doctor '8' and the deceased's father '7' hope that the murderer will be found."

"Please note! The above situation is their initial state of mind when we did not exchange any letters! ”

"Now, through the exchange of several letters, let's simply reverse whether the above inference is valid or not!"

Ning Qiushui tried his best to simplify his thinking and tell everyone.

"First of all, the doctor and the father of the deceased must have hoped that the murderer would be traced in the first place, and this can be clearly felt through the reflection of the two later letters, '10 and 11'."

But after the doctor checked the surveillance, he hesitated, and his opinion began to disagree with the deceased's father...... But that's later, and we don't care. ”

"The second is patient '5' and patient '6', both of them should not want the murderer to be found, let's talk about patient '6', this is a psychopath, he wants to satisfy his pathological psychology through the current situation, once the murderer is found and the matter is over, he can no longer continue to blackmail nurses or some insiders through this matter, so from his point of view, he definitely doesn't want this matter to end so soon."

"Next is patient '5', his reply to the letter is very short, why is it short, because it is easy to make mistakes if he says too much, obviously he also wants to hide something, and in this case, the only thing that can be hidden is the truth, so it can be seen that he also does not want the criminal to be caught so quickly."

"So looking at it this way, the purpose of patients '5' and '6' is the same."

After Ning Qiushui finished speaking, Liu Meng bit her lip and asked:

"No, according to what you say, isn't there a paradox?"

"The nurse at Gate 1 doesn't want the truth, but the sister of the deceased at Gate 2 wants the superintendent to find out the truth of the matter as soon as possible......"

As she spoke, a cold sweat suddenly oozed from her back!

Liu Meng herself seemed to have figured out something, slowly raised her stiff head, and swallowed her saliva.

"What do you mean...... The little girl lied in the letter, and she didn't want the truth to come out? ”

The third letter on the table was written by the doctor at Gate 8, who had delivered the woman once seven years earlier.

I think that the one who was born at that time was the deceased's own sister.

In other words, the girl behind Gate No. 2 is only seven years old this year!

"This ...... The little girl shouldn't be the murderer, she, she's only seven years old this year, and she has no reason to kill her own brother! ”

The fat man named Chu Liang felt an inexplicable fear for the thoughts that suddenly popped up in his head!

A little girl who is only seven years old...... Strangled his younger brother with his own hands?

"I'm not sure if it's her, but she's suspicious, and she does have a motive to kill!"

Xu Gang took out the eighth letter on the table.

"The father of this family has serious patriarchal tendencies, and it is uncertain whether the girl was belittled or abused at home."

"If so, then she has a motive to kill her brother."

"If you extrapolate from this point, I agree with Ning Qiushui's point just now - this girl really doesn't want the superintendent to find out the truth for some reason."

"She should know the truth, or she should be the murderer herself."

The crowd looked at the letter on the table and fell silent for a while.

"So next, who should I send the letter to?"

Xu Gang asked this question.

It's like asking everyone, and it's like asking yourself.

He stared at the letters on the table, his gaze flickering with thought, sometimes with confusion.

At this time, Ning Qiushui, who was standing beside him, suddenly said:

"Do you dare to take any chances?"

Xu Gang turned his head and looked at Ning Qiushui.

"How to take the risk?"

Ning Qiushui says:

"You take a dangerous letter to the little girl, and if you survive, it means that our previous inference is completely correct."

Xu Gang's heart moved, and he understood which letter Ning Qiushui wanted him to hand to the little girl.

"You want to deliver the first letter to the little ones at Gate 2?"

Ning Qiushui nodded, and said very frankly:

"I'm not sure how dangerous it is, if my previous assumptions were wrong, then you risk being killed by her!"

"I'm not in a position to force you to take risks for everyone's benefit, so you can choose to vote for a safer letter."

Xu Gang seriously thought about Ning Qiushui's proposal.

This is indeed a very dangerous act.

If their speculation is correct, then the little girl at Gate 2 also doesn't want the truth of the matter to be investigated, so he sends Yunwei's letter to the little girl, showing that he desperately doesn't want the truth to be investigated, and the little girl will not kill him.

But on the contrary, their reasoning is wrong, the little girl is very desperate for the truth to be investigated, then this letter is likely to kill him!

Just when he was silent, Xie Cheng on the side suddenly took the first letter!

"Damn, I'm coming!"

Xie Cheng gritted his teeth.

“…… Lao Xu, in the last door, I owe you a life, if I die, I will pay it back to you, if I don't die, we will be a big step closer to the truth! ”

Xu Gang grabbed his wrist and shook his head slightly, signaling him not to be impulsive.

"It's not yet the point where you have to take risks......"

Xie Cheng replied:

"Everyone is not this kind of person who specializes in criminal investigation reasoning, and with the fermentation of time, I don't know what kind of danger I will encounter in the future, and the longer it drags on, it will not be good for everyone!"

"Have you forgotten what happened to our first door?"

At the mention of their first door, the corners of Xu Gang's mouth couldn't help but twitch.