Chen Weibin took out two cigarettes, handed one to Li Jun, and lit the other himself, and continued: "Of course, those traces may also have been left by standing on the windowsill when scrubbing the glass. While eating noodles, I was thinking that I should go back to No. 2 on the second floor to see what was going on. ”

Chen Weibin took a puff of cigarette and said: "Later, I carefully observed the glass of the window by the windowsill of Zhang Dahua's bedroom, and found that there was a thick layer of dust on the glass, which should have not been scrubbed for a long time, which ruled out the possibility of standing on the windowsill to scrub the glass." So...... How did those traces on the windowsill remain? I think it's very likely that someone jumped through the windowsill and jumped underneath. ”

Li Jun and Wei Xi nodded as they listened.

"There is another important factor...... "Chen Weibin paused, and then analyzed, "It is the special location of No. 2 on the second floor!" It is not too high from the ground, and there is also an anti-theft net installed on the second floor, so it is very feasible to go down to the ground from the window sill on the second floor. In the surveillance video of Fumanlou, isn't it impossible to find out how the woman left? Since she didn't want to be captured by the surveillance of Fumanlou, it was very likely that she would leave Fumanlou through the window. ”

Wei Xi immediately came to his senses and said, "Detachment Chen, no wonder you kept asking me to jump just now, you were doing an experiment." ”

"Yes. Since the person is a woman, it is necessary to find a way for the woman to jump. It was only through your non-stop experiments that I found these four fingerprints on the edge of the window frame! ”

Chen Weibin took out his mobile phone, flipped out the photos of the four fingerprints taken with his mobile phone, handed them to the two of them to look at, and said: "Li Jun, I'll send you the photo of the fingerprint through WeChat later, you go and print out the photo and save it as evidence first." ”

"Yes." Li Jun agreed.

"But ......," Wei Xi asked puzzledly, "why do you have to choose the second floor, the third floor and the fourth floor are fine, hang them with ropes and come down." ”

"Don't forget, she's a woman! In terms of physical fitness and strength, it is not as good as men, and it is unlikely that they will use ropes. Chen Weibin said while extinguishing the cigarette butt in the ashtray.

Wei Xi nodded.

"In addition...... "I observed that type of window is made of aluminum alloy window frame, and the rope is not tied to the window frame. If you tie the rope to another part of the bedroom, such as the foot of the bed, you are worried that it will not be able to bear the weight of an adult, which will affect your safety. Besides, if you use a rope, you have to consider the problem of taking the rope away, and you can't leave the rope in the house, isn't it not that there are no three hundred taels of silver here? ”

"In that case, the second floor is the only option." Wei Xi said.

"I think so, too. This explains why the man paid such a high price to rent Zhang Dahua's house! Li Jun interjected.

"And ......," Chen Weibin said, "I just went to look at the location of the sidewalk under the window, that is, the landing position where Wei Xi jumped, and there was no surveillance around it." When there was no one around, that woman could jump from the second floor and leave Fumanlou according to the method of Wei Xi's last experiment, and she would be unconscious. ”

"However, didn't Zhang Dahua say that the renter is a man, and what is the relationship with the woman in the surveillance?" Wei Xi was a little puzzled.

"Basically, it can be judged that the man came forward and rented the house with a fake copy of his ID card, and the actual user should be the woman." Chen Weibin said.

"The copy of that ID card is fake, didn't Zhang Dahua see it at the time?" Wei Xi asked.

"That's understandable. Ten times the rent, that's a lot of money! In the face of the temptation of interests beyond the ordinary, people are often easily lost, and they do not pay much attention or are not willing to pay attention to other details. Chen Weibin explained.

"What are they renting for?" Wei Xi asked.

Li Jun took over: "The second unit in Fuman Building, in the bedroom window, you can just see Zhou Yuanliang's villa clearly. The purpose of their rent is to spy on Zhou Yuanliang! ”

"That's right! Spy on Zhou Yuanliang! Chen Weibin affirmed.

"So...... From this, it can be deduced that the man and the woman must have something to do with Zhou Yuanliang's death! ”

"By the way......" Li Jun looked at Chen Weibin and asked puzzledly, "Detachment Chen, when we were still in Zhang Dahua's house at that time, why did you think it was useless to check the monitoring when the man borrowed his mobile phone?" ”

"The man was well-planned, thoughtful, and thoughtful, and he wrapped himself in the whole process of renting and checking out. I'm sure he must have borrowed someone else's cell phone to make a call in a place where there were no surveillance cameras. If we spend time and energy to check the surveillance when he borrowed his phone, it will be in vain! Chen Weibin said.

Li Jun nodded, and then sighed, "Hey! If only the surveillance footage had been kept for a longer period of time, we would be able to find out how many times the woman had been in Zhang Dahua's house before Zhou Yuanliang's death. ”

"Actually, the other party has already thought of this, and he also took into account that we went ahead! did not extract the surveillance video of Fumanlou before Zhou Yuanliang's death, there is an accident and an inevitability! Chen Weibin looked at the two and said.

Li Jun and Wei Xi looked at each other.

Chen Weibin continued: "Think about it, even today, it has been two months and 14 days since the case of Zhou Yuanliang being poisoned, why didn't that man check out in time after the case, but delayed checking out until a week ago?" ”

"yes, what does he mean?" Li Jun asked.

Chen Weibin took a puff of cigarette and said slowly: "That's because ...... He took precautions in advance. The police will definitely carry out an investigation after the Zhou Yuanliang case occurs, and according to the general investigation process, when we expand the scope of the investigation to Fumanlou, which seems to have little to do with Zhou Yuanliang's case, it should have been some time since the case occurred. ”

"Yes. We also watched the surveillance for many days before we included Fumanlou in the scope of the investigation. Li Jun responded.

"There are two possibilities......," Chen Weibin said, "one is that if our investigation time is within two months after the incident, that is, before the surveillance video is covered, at that time, there is no one living in No. 2 on the second floor, we can't get in at all, and the case of Zhou Yuanliang's death is very complicated, and we basically won't pay attention to the house where no one lives." ”

"The main direction of our investigation of Fu Man Building is to ask the residents of the building if they know the woman, and it is really unlikely that we will be concerned about a house that is not occupied." Li Jun said.