Feng Yun was still very calm, but she could see that her body and mind were relaxed, as if the thing she had been waiting for for a long time had finally arrived. Then he said, "You must have discovered her secret and talked to her." Can you tell us how you found out? ”

I don't go around in circles with you anymore, at first, I was also kept in the dark, but I don't believe that there are ghosts in this world, so I think it must be man-made, but man-made is nothing more than motives and timing, and modus operandi, as long as you figure it out. So let's start with the motive for the crime, the timing of this incident is too strange, not long after Hong Xin's death, and the deceased still has a receipt for sending flowers to Hong Xin in his pocket, so it must be related to Hong Xin's death, I did think so at first. But then I thought about it carefully, no, this matter was a scam from beginning to end, how could Hong Xin put the receipt into the pocket of the deceased when he died, since it was not Hong Xin, then only 2 people would, one was the deceased himself, and the other was the murderer, the deceased himself would definitely not, after Hong Xin's death, not to mention that these receipts were very unlucky, and secondly, he had been with him in case he was found out one day, and he couldn't tell clearly. Therefore, in the end, it can only be put by the murderer, so why did the murderer do this, it can only be that she is a person who knows Hong Xin very well, either a friend or a mortal enemy, but the murderer ignores one point, this will not only show that this matter is related to Hong Xin, but also prove that the murderer is the party concerned and knows the existence of the flower delivery incident, so the scope will be much smaller. Thinking about this, I secretly investigated the deceased's flower delivery records, and found that your name was also among them, so I kept an eye on it. Then the second point is timing, since the first point says that you are also one of the objects of the deceased's flowers, then timing is not a problem, just ask him out with some ambiguous words. Finally, when it comes to the method, this point has also bothered me for a long time, because the scene is divided into two points, the first point is how the murderer killed the person, and the second point is how the murderer made the secret room. Regarding the first point, I also understood it last, which is also the biggest mistake made by the murderer, although the cold weather will make the room produce water vapor, but there are two errors: first, the water vapor will not condense too much on the wall, because the wall is too thick to transfer a lot of heat; Second, the room is obviously very heavily heated, so even if there is water vapor, there will not be so much water vapor, then I came to a conclusion, this water vapor is not naturally formed, but man-made, so if you want to understand this, everything is simple, since there is water vapor, and the only thing that can make the deceased so painful is dry ice, and it takes a long time for dry ice to kill people, therefore, there must be a very familiar person in the room to lure the dead, so there will be so many footprints behind the classroom, And the high-end classrooms are basically high in the back and low in the front, so the deceased was so inexplicably hit. But the second point, how to make the secret room, I knew it a long time ago, because at that time, a person who found the deceased only said to call the police, but did not call an ambulance, indicating that she had long known that the person inside was dead, yes, this person is the cleaner, and it is precisely because the cleaner kicked the door open, so this secret room is not established at all, as long as the door is kicked open in advance, and then the cleaner pretends to kick it open, as long as the time is about the same, then the last bit of evidence that can prove that it is not a secret room is gone. But what bothered me all the time was that I always thought it was a person who committed the crime, so I was always worried about how the cleaner tricked the deceased in. I wouldn't have doubted you if it hadn't been for the fact that what you said in the end.

"What is it?" Feng Yun's words were simple.

It's what you said about Hong Xin coming back, what you told me at the beginning was that you didn't know what happened to Hong Xin, but now when you see Hong Xin's flower receipt, you show not surprise, but fear, as if everything was rehearsed, and from this time on, I was sure that you must be the murderer.

"Then why didn't you arrest me?" Feng Yun was still very calm.

Give you a chance to turn yourself in, and you can take all the charges, it's really not worth it to take two people for such a scumbag, you know what I mean? Also, there will be leniency if you turn yourself in, and with the right reasons, you won't be sentenced for a long time. Although I sympathize with you, as a police officer, I must seek justice for the deceased, and I hope you can understand me, and this is the purpose of my coming to you.

In the end, I watched Feng Yun leave, and in the first case, I let the murderer go, but I have no regrets.