Bai Song really hasn't been to the bank to get anything, Li's case, he has seen bank flows, so he understands this situation, and he also knows that this job is indeed likely to be busy for a long time and get nothing, but once this idea comes out, it will linger.

In the end, Bai Song still explained Wang Xu and reported the idea to Wei Institute together.

In fact, the recent work of the case team has been a lot less, and most of the work that can be done in this case is basic work, and there is no progress in dozens of records, so Wei agreed to Bai Song's request and began to inquire about the bank transactions of some specific people in two groups.

It was almost two o'clock at noon to get the video, Wang Xu said to invite Bai Song to drink authentic mutton soup, and the two changed into civilian clothes in the car and went to a mutton soup restaurant.

According to Wang Xu, this shop has a history of more than 40 years, and Wang Xu's master drank mutton soup here when he was a child, which is very authentic.

Ten yuan for a big bowl, soup, sesame sauce, spicy seeds can be added casually, eight cents a baked cake, vegetarian assortment, stewed beef head, authentic halal eating.

Drink a sip of hot soup with a little red oil in the sesame sauce, and most of the cold of the half day will be dispelled at once.

Bai Song stirred the mutton soup with a spoon, and the rich soup churned a small whirlpool in the stirring of the spoon, "Brother Xu, you say, these two people, is it possible that they didn't run away at all?"

"Didn't run?" Wang Xu was a little incomprehensible.

"We have ruled out many, many impossibilities, but can we understand it this way. These two people, there are other residences in the Daguangli community, when they finished killing people, they went to the bungalow opposite and threw away some masks and other things, changed their clothes, and then returned to their residence in the Daguangli community, and waited for the police to check all before they came out?" Bai Song said: "As long as you don't leave this bungalow and the Daguangli community, the surveillance video basically can't capture them, and there are no cameras between these two places." ”

"Hmm... It's possible that you say that. Wang Xu thoughtfully: "Avoiding surveillance video is the basic skill of criminal suspects now, and there are so many movies now... Our camera is far behind, if only it were like the Sanlin Road Police Station. ”

"Then let's go to the scene later?" Bai Song asked.

"Good. Wang Xu nodded.

After eating, the two returned to the vicinity of the Daguangli community and walked to the door of the house where Sun died.

"First of all, judging from the traces on the roof, the suspect entered the house from the roof, and the method of killing was poisoning, preliminary analysis, the suspect first hid, and then waited for the victim to smell and drink water containing hydrogen cyanide before appearing, and then quarreled with the victim, and then the victim was poisoned and fell to the ground, the two opened the door and ran away, and took the container. Wang Xu said that this is the most reasonable explanation at present.

"Well, there are a few questions", Wang Xu said to himself: "The first is that there are no traces of a fight at the scene, but there are signs of noise, and it stands to reason that Sun should know these two people;

"Is there such a possibility", Bai Song said: "These two people, in fact, only one person knows Sun, and we don't know it." There was only one person who entered the house, and it was probably the short one, and the tall one didn't actually come in, and he grabbed the rope with his body on the roof. Waiting for the short man to succeed in the crime, he packed up his things again and left together. ”

"Huh?" Wang Xu said: "This can explain the rope problem upstairs, so why should the people upstairs wait for the downstairs to go with him after they get their hands on it? If he stays on the roof for too long, isn't he afraid of being discovered?"

"This kind of floor, very few people go up, if the downstairs person is faster, it's not impossible. ”

"That's as you said", among these two people, at least one person must know Sun, and he is more familiar with it, otherwise someone suddenly enters someone's house, even if it is a friend, it is estimated that they will have to fight, right?" Wang Xu said.

"If you say that, it's not enough to be familiar with this level, you have to be relatives and friends. Suppose you are at home one day, you don't open the door, and suddenly you see me appear at your house, and it scares you to death, right? I guess you can beat me out..."Bai Song complained.

"There are indeed a lot of suspicions here, let's go downstairs. Wang Xu said.

"Well, let's recreate the crime scene, after the two of us went downstairs like this, the neighbor had already opened the door and saw Sun falling to the ground, at this time you and I had already gone downstairs and walked out together, and then the neighbor reacted, looked out of the window, and just saw the two of us walking out. ”

Bai Song stood in the open space in the big light, looking up at the window on the sixth floor. There are a lot of trees in this old community, and it is not easy to see the people below from the sixth floor, which happens in December, if it is in June or July, the trees are leafy, and you can't see the people downstairs at all.

"It's a minute and a half for us to come down, and this is the only place where the neighbors can see us," Bai Song gestured to a small area around us. If you go further, you will leave the field of view, and the back and both sides, it is difficult to see from the sixth floor, you have to stick your head out, but the neighbor did not stick out his head, and stood upstairs and saw it.

"From the analysis of DNA, height, footprints, etc., the two suspects are very consistent with the physical condition of the two people identified by the neighbors, let's assume that these two people are murderers, then, walking here from the building, it's not quite right", Bai Song gestured: "The entrance of the door of this unit, if you want to go to the bungalow opposite, you don't need to go this way, just go straight, since you didn't go straight, but first turned right and walked here, then it means that as soon as they came out, they didn't rush to the bungalow to change their clothes first." ”

"Maybe they're not familiar with this area, right?" Wang Xu retorted.

"If it is a person who comes to collect debts, kills people in passion and stabs Sun to death, I believe what you said, but these two people act carefully, plan and then act, and the surrounding monitoring is estimated to have been studied in advance, how can they not be familiar?"

"Well, it makes sense", Wang Xu nodded: "Since you say so, it means that these two people didn't go to the bungalow for the first time?"

"No, they must have gone to the bungalow, and they must have changed their clothes there. I asked Zheng Yanwu, and the time period he said was very close to the time when the murder occurred, so these two people should have gone to change their clothes as soon as possible. Bai Song said: "I have a corollary. ”