Ding Yang, who had already walked to the elevator door, heard my words and wondered: "Ji Wen, what are you talking to yourself?" What magnet Uncle Liu's? ”

I didn't explain directly, but took Ding Yang to the first floor by elevator, went to Uncle Liu's house and asked for a long magnet with a little thumb length and a half thumb thickness, and then said to Ding Yang: "I'll go to the fourth floor first, and when I arrive, you can take the elevator to the fourth floor, and I'll let you experience what kind of situation the deceased was in at that time!" ”

Ding Yang watched me take the elevator to the fourth floor with a blinded face, and after arriving on the fourth floor, I walked out of the elevator, first looked at the place above the elevator door that ordinary people would not pay attention to, and sure enough, I found something I expected, and then I attached the long magnet in my hand horizontally to the middle of the closed elevator door, and then quietly waited for Ding Yang's arrival.

After the elevator reached the first floor, it went all the way up to the fourth floor, and when the elevator door opened, Ding Yang said with a puzzled face: "What do you want to do?" ”

I smiled lightly and said, "It's okay, you just don't think I'm here, try to go to the sixth floor." ”

Ding Yang sighed helplessly, and muttered while pressing the button on the sixth floor: "If there is anything you can't say directly, if you have to do such a troublesome thing, I really convince you." ”

I didn't listen carefully to what Ding Yang said later, my eyes were glued to the gradually closing elevator door, waiting for the result I hoped would appear.

Sure enough, Ding Yang was muttering, and was suddenly shocked to find that the elevator door that had been closed had been opened inexplicably again!

Ding Yang was a little confused at this time, looked at me who was still standing at the door and asked, "You just pressed the button?" ”

"No, I've been standing here, don't believe me, stay away, you try again." With that, I turned around and walked to a place five or six meters away from the elevator, and Ding Yang also pressed the door close button again, but the result was still the same, the moment the elevator door closed, it opened again inexplicably.

After trying several times in a row and couldn't close the elevator door, Ding Yang finally couldn't help but ask: "Ji Wen, I see that you just took a magnet, did you use that magnet to make me unable to close the door?" But what about magnets? Why didn't I see it? ”

I pointed to the top of the elevator door and said, "There it is." ”

Ding Yang looked up, and found that the magnet was impartially adsorbed in the middle of the elevator door at this time, which happened to make the elevator door unable to close normally!

Ding Yang wondered for a while: "When did you put it on?" Why didn't I see it? ”

"I'll put the magnet up before you even come up!"

In order to prevent people from being squeezed by the door, the elevator has a special design, that is, as long as something is blocked in the middle of the door, the elevator door will automatically sense and reopen the door, so that magnet is the real reason why the elevator door cannot be closed.

I also discovered this by accident, related to the magnet fragments found on Xiao Liu's body today, so I made such an assumption, the elevator door is divided into two layers, inside and outside, but no matter which layer is blocked, it cannot be closed, the murderer only needs to put the magnet in the middle of the elevator door crack on the fourth floor that day, when the elevator door opens, the magnet will definitely break away from one of the doors, and the remaining part of the adsorption force will be attracted by the edge of the door crack, and will eventually cross the middle of the door crack, The murderer only needs to do this simple thing before the second deceased Xiaofang takes the elevator, and then he can leisurely wait for Xiaofang on the other side of the corridor to throw himself into the net.

The location of this magnet is extremely hidden, and now Ding Yang has not found it in the daytime, let alone Xiao Fang, who is taking the elevator late at night.

After listening to my explanation, Ding Yang finally understood my intention to do this, reached out and took out the magnet from the crack in the door, and said, "Indeed, if this is the case, the deceased Xiaofang must leave the elevator and go to the stairs." But Ji Wen, why are you sure that the murderer did use this method? ”

I smiled confidently, "Do you remember where the magnet was?" ”

"Remember, what's wrong?"

"And what do you see above the magnet?"

Ding Yang looked at the top of the elevator door carefully, and was suddenly surprised: "How can there be so many small pieces of magnets here?" ”

"Do you still need to ask? It must have been left behind by the murderer after it was used in the first place, so I'm so sure. ”

After Ding Yang heard this, he sighed: "So, the biggest suspect is not Uncle Liu?" You've spent a long time just explaining a murderer's modus operandi, but there's still no substantive conclusion. ”

"Don't worry, the murderer's murder method is actually one of the suspicious points in this case, the first two deceased may not be special in your opinion, but what about the third deceased, Xiao Liu? Last night, we were all listening carefully in the room, Xiao Liu was killed at the staircase on the fourth floor without making any movement, how did the murderer do it? Even if the murderer breaks in and kills someone, Xiao Liu should have a few seconds to scream, and he can be heard by us, why is it so silent? ”

Ding Yang said disapprerovingly: "This can also be explained, you forgot that Uncle Liu has the key to each room in his hand, he can wait until Xiao Liu falls asleep, and then quietly open the door, and strangled him to death while Xiao Liu is asleep." ”

I shook my head and said, "There is no such possibility, you must know that your autopsy said that Xiao Liu died between one and three o'clock in the morning, and that was the point where we had just left Xiao Liu and returned to the room to sleep, Xiao Liu himself was a night owl, and he was so frightened, how could he fall asleep so quickly?" If it was really Uncle Liu who opened the door to kill people, Xiao Liu would definitely have time to shout loudly for us to help. ”

When Ding Yang heard my words, he also seemed to feel reasonable, and pondered for a moment and said, "Then what's going on?" ”

"I don't know much about this, if I want to guess, the only possibility is that the person who entered Xiao Liu's room at that time was a person who made Xiao Liu completely relieved, this kind of person can only be the two killers who went to the Internet café all night, I wondered, could one of them quietly return to the room and kill Xiao Liu when he was defenseless?"

Ding Yang's eyes suddenly lit up and said, "Yes, why didn't I think of it!" It's entirely possible that you're talking about this situation! I'll call Officer Yang and ask him to ask the two killers Matt carefully, and by the way, go to the Internet café where they went all night yesterday to check the surveillance, once someone tells a lie and leaves, then he is the murderer! ”

I just said a speculation of my own, and there was no substantive evidence, but Ding Yang seemed to see hope, and immediately dialed Officer Yang's phone like chicken blood, and said with a fluttering eyebrow.

The matter here came to an end for the time being, and I remembered that I was going to buy cigarettes just now, and I didn't tell Ding Yang, so I went downstairs to the store alone to buy cigarettes.

After buying a cigarette, I lit one and smoked as I walked, thinking carefully about where I should use it as a breakthrough next, thinking about it, I had to go to Granny Feng's house to ask for the last clue, after all, the ashes of the paper money could never be groundless, but I didn't believe that all this was done by Granny Feng.

While thinking about how to get to Granny Feng's house, I was about to take the elevator back to the fourth floor to find Ding Yang, but when I closed the elevator door and waited, I suddenly found that Granny Feng was actually standing behind me!

This suddenly looked over, almost scared me to drop the cigarette in my mouth to the ground, I said to my heart, why is this Granny Feng so elusive every time she appears? Did she walk without a sound?

Granny Feng was holding a basket of vegetables in her hand, staring at me with a surprised look and smiling, "I remember your name is Ji Wen, right?" Smoking in the elevator is not a civilized behavior. ”

When Granny Feng said this, I immediately felt a little ashamed, and immediately snuffed out the cigarette and said, "Granny Feng, did you just come back from grocery shopping?" ”

"yes, didn't I say yesterday that I would invite you to dinner at home? It's not like you're going to buy some food, you can come with me to my house now. "Granny Feng still spoke with a hint of gloom, but when I heard it, I felt that she was still so amiable.

Originally, I was still worried about how to go to Granny Feng's house, but since she invited me now, this was naturally a rare opportunity, so I immediately agreed.

We first went to the fourth floor, called Ding Yang, who was still looking for me after the call, and then returned to the sixth floor and came to the door of Granny Feng's house together.

Granny Feng opened the door and walked in first, and then said, "Come in, sit casually, I'll wash the vegetables first." ”

After speaking, Granny Feng walked towards the kitchen, and Ding Yang and I also walked into the room, and came to the living room, only to see that Granny Feng's home was very simple, both furniture and electrical appliances had a sense of age, such an old man living alone in such a house, suddenly made me feel a little sad.

But when I went to see Granny Feng's house carefully, I instantly felt puzzled again, because the whole room, Granny Feng was very clean, even to the point of spotlessness, such a clean room, in my impression, only Wang Tao's home is like this.

Ding Yang obviously didn't notice this, and obediently sat on the sofa and watched TV, while I looked around and made sure that every corner of the whole room looked particularly neat, so neat that people couldn't bear to sit down.

"Why is Granny Feng's room so similar to Wang Tao's room? It's that Granny Feng usually likes to be clean, and the house is cleaned up well. Or does this Granny Feng have some kind of connection with Wang Tao? ”