Qi Yuan also smiled back and didn't say anything.

It is useless to say more.

Su Ping pouted: "Tsk, you don't talk back, you're not as cute as before." ”

Qi Yuan: ???

"Ahem," Su Ping coughed dryly, and then said calmly: "Test you, do you think it's better for us to continue to collect evidence now, or directly interrogate Zhou Jia, find a way to break through her psychological defense, and let her confess directly?" ”

Qi Yuan retracted his attention, pondered for a moment, shook his head and said, "I'm not sure either...... However, she has obviously made a lot of arrangements, and she herself is extremely meticulous, even if there is the fact of 'escape' and she is caught, I am afraid that she will not confess easily.

Not to mention anything else, there is really nothing we can do about her mother's hob meat, if she is in the same situation, I am afraid we will have to be prepared for zero confession and conviction. ”

Su Ping sighed and said, "To put it bluntly, you mean that it is not recommended to interrogate her now?" ”

Qi Yuan nodded and said: "Brother Gao and Lao Hai are already tracking down the source of dry ice, although it is indeed the order placed by Zhou Jia and her husband's mobile phone and the payment by bank card, but maybe they can find some clues." ”

After a pause, he added: "Especially in the final handover, the delivery guy may be able to make a breakthrough, for example, when he goes down to pick up the goods, her husband may complain about 'what strange things are you buying', or mention words like dry ice." ”

"That's a real idea." Su Ping nodded, but then frowned slightly: "But the delivery brother can only be a personal certificate at most, and the effectiveness is not high." ”

"Let's sit down and confirm the guilt first, it's good to have witnesses." Qi Yuan said.

Su Ping snorted, didn't say anything more, and only nodded lightly.

……

Time flies like an arrow, time flies, and it passes in the blink of an eye......

Several hours.

At the end of the regular meeting, Su Ping added several more notes to his notes, but there was no substantial progress.

Zhou Jia got a relatively favorable testimony - the designer sent Zhou Jia a design draft that night, and Zhou Jia asked him to rush the draft, which should not be a temporary idea, but a period of urgency.

Of course, it cannot be ruled out that Zhou Jia was deliberately waiting for this opportunity earlier. But relatively speaking, it is still a little good for her.

The pimple at the center of Su Ping's eyebrows was a little bigger.

Qi Yuan and a few people sat down, and a few of them opened their mouths several times, but they wanted to speak and stopped, and they didn't say anything after all.

"No," Su Ping was upset when he saw this, and couldn't help but ask, "What's the matter with you guys?" When you open your mouth, I open my mouth, and I don't have a word in a circle, and everyone is farting with their mouths? ”

"Ahem." Qi Yuan coughed dryly twice, and hurriedly said, "It's not that I don't say it, but I don't know how to say it...... This guy has to say that his hands and feet are so clean that we don't have a suitable breakthrough point.

While she is not without flaws, none of the evidence is critical. It's good to be able to break her psychological defense line with this, but if not, it will be difficult to do, and I'm afraid we will all have a headache to death. ”

"Gan." Su Ping scolded, took out a cigarette and lit it, and smoked it hurriedly.

In the conference room, the few remaining people fell silent again, and the atmosphere seemed very stagnant, making people feel very depressed.

"Forget it!" After a cigarette, Su Ping sat up straight, pinched the cigarette fart in his right hand and pressed it hard in the ashtray a few times in a row, then stood up and waved his hand, and said irritably: "Scattered, go back and rest, let's talk about it tomorrow!" ”

Several people lowered their heads and slowly stood up and left the conference room.

Su Ping sulked again, and then paced back to his lounge, washed up briefly, and went directly to bed.

I'm sleepy, my temper is hard to control, sleep, recharge my energy, and follow up tomorrow.

……

In the early morning of the next day, Qi Yuan still got up early in the morning.

I didn't sleep at all the day before, but I'm full of sleep today, but my head is still a little dizzy, and I don't feel like I'm running very brightly.

Looking at the time, it was still early, so he took a shower, felt more comfortable, brushed his teeth again, shaved off his stubble, and then went out to the detachment.

The detachment's breakfast is much cheaper than making it yourself, and it tastes good, so it is natural for Qi Yuan to be lazy.

After a whole meal of rice rolls, he took the plate and looked left and right, and sure enough, when he saw Su Ping, he leaned over, sat opposite Su Ping, and said with a smile: "Morning, Team Su." ”

Su Ping glanced up at him, ignored it, and continued to eat silently with his head down.

Obviously, Su Ping was not in a good mood, very irritable, and didn't want to deal with people.

Qi Yuan didn't care either, and ate it by himself.

Almost at the same time, the two of them got up together, put the plates in the recycling area, and left the cafeteria side by side.

Qi Yuan smiled again and asked, "Team Su, how did you sleep last night?" Looks like you're refreshed today? You don't need me to be your secretary anymore, do you? So what's my mission today? ”

Su Ping paused, glanced at him, and asked, "Does your mouth have its own thoughts today?" ”

"Huh?" Qi Yuan was a little confused.

"That's a lot of talk!" Su Ping rolled his eyes, continued to walk forward, and said at the same time: "Today, you follow Song to continue the visit, you can do whatever he arranges you to do, you must dig up some evidence, no matter how bad it is, you have to dig up more clues."

Just knowing that Zhou Jia and her husband's family are white-eyed wolves, selfish and selfish, it doesn't mean much. Just like you said yesterday, family conflicts, standing up to the sky can only prove that she does have a motive to commit the crime, but it cannot prove that she did it. ”

Qi Yuan nodded and said softly, "Okay, then I'll go to Brother Song later." ”

"Hmm." Su Ping bowed his head and said, "Don't wait, let's go now." Don't dangle around me, it's annoying at this time, and you'll be scolded and unhappy. ”

"Well, then." Qi Yuan said with a smile, and said with a dead face: "I've been with you for a year, how can I not know that you are good to us in your heart, and you also care about me and use it when you scold me." ”

"Who did you learn this from? Cheap, disgusting to look greasy! Su Ping snorted lightly: "Hurry up, and then pat yourself blindly in front of labor and management, and labor and management will kick you to the police station!" ”

Qi Yuan shrunk his neck and laughed twice, not daring to force Lai Lai again.

At this moment, I saw Lao Wei get out of the elevator, and when he saw the two of them, his eyes immediately lit up, and he walked over quickly, saying, "Yo, Team Su!" I was about to have some breakfast to find you, and this happened. ”

"Discovery?" Su Ping looked at him, his irritable mood instantly suppressed most of it, and he guessed that he might have made an important discovery.

But after looking at it again, Lao Wei's eye sockets were deep, his eyes were full of bloodshots, and his glasses were covered with dandruff and fingerprints, covered with a layer of gray, his beard was sloppy, and his hair was messy, so he couldn't help but ask: "You won't stay up all night last night, will you?" I've been up for forty-eight hours, I'm really not afraid of sudden death? ”

"It's okay, I was going to go to sleep after breakfast and you reported to the mission." Lao Wei was very excited, although he looked very haggard, but he was very energetic and contradictory, and he was a little excited: "I can be convicted, there is evidence!" ”

"Oh?" Su Ping raised his eyebrows again, and immediately said, "Let's talk about it!" ”

"Glass doors to the balcony." Lao Wei said, and pointed to the back with his thumb with his backhand: "Go to my office and say?" There are photos, which is a little more intuitive to say. ”

"Okay." Su Ping nodded, glanced at Qi Yuan again, thought about it, and said, "Come over together." ”

"Hey!" Qi Yuan immediately bowed his head.

Soon walked to Lao Wei's office, he took out the report, turned on the computer again, and said at the same time: "You see, the glass door of this balcony, to put it bluntly, is a large frosted window, and the way of 'anti-locking' is the same as locking the window, using the crescent lock of the window, which is hooked when it is lifted up, and it is difficult to open without destroying the glass."

And last night, our trace inspector suddenly found that a few fingerprints were found in the lower part of the window, just at the bottom edge, na, this is the fingerprint we extracted, and there is also a photo of the fingerprint part, you see. ”

Su Ping took the photo and looked at it twice.

Then Lao Wei found a few more photos, handed them to Su Ping, and said: "The on-site trace examination shows that Hu Weishan, who is Zhou Jia's father-in-law, did not immediately lose consciousness after pulling over the barbecue grill, and when he fell to the ground, he struggled for three or four seconds, rolled on the ground for half a circle, and then raised his hand to pull the balcony door hard, but did not open it."

At the same time, I immediately notified Lao Yan, who immediately turned out the body and did a detailed examination of Hu Weishan's fingers, and sure enough, I found that his nails were slightly turned out, and there was a slight bleeding, but it was not obvious. ”

Qi Yuan immediately asked: "That is to say, he instinctively wanted to open the balcony door to escape, but failed, and the force he used at that moment was quite large, is that so?" ”

"Yes." Lao Wei said: "In addition, I asked the trace inspector to test the window door, and found that the resistance of the track is not large, it is very silky, and the carbon ash on the top has not been found to fall into it, ruling out the possibility that the carbon particles are just stuck on the track and cannot be pulled apart." ”

The corners of Su Ping's mouth finally raised, and he said, "That is to say, Zhou Jia buckled the crescent lock of the balcony door!" ”

"Yes." Lao Wei poked the investigation report excitedly, and then continued:

"Not only that, we carefully studied the subtle traces at the scene, focusing on the traces left by the contact between skin sweat and oil and the ground, and finally concluded that Hu Weishan was still pulling the window door until he lost consciousness and died, and when the window door was opened, his arm was driven to slide for a distance."

"Oh?"

"There are many other subtle clues." Lao Wei continued: "You look at this animation restoration, the result is obvious! ”

As he spoke, he opened an animation and said: "We deduced that when the four victims were completely unconscious and died, Zhou Jia went downstairs, covered his mouth and nose with a wet towel, quickly opened the balcony door and closed it again, then opened all the windows, then left the balcony and closed the door again."

She is very fast and has a lot of movements, so she drove Hu Weishan's handwriting, and she should have almost tripped over, Hu Weishan had a small stampede injury on his forearm, which was a posthumous injury, no life reaction, and the balcony had incomplete and messy footprints in the group, and it was estimated that he stumbled a few steps. ”

He said it very fast, and it happened to be in sync with the animation.

Qi Yuan thought for a while and said, "The testimony provided by the designer shows that Zhou Jia left for a while, about four or five minutes, saying that he went to the toilet, and it is estimated that he went to the balcony to ventilate at this time, right?" ”

"Oh? That's how it should be. Lao Wei nodded, and continued: "It happened to be raining lightly at that time, and the wind was quite strong, and the carbon dioxide soon dispersed, and Zhou Jia returned to the scene again." ”

After a pause, he paused the video, pulled out another photo and a report, and continued:

"Look at this gray spot, at first we thought that this black spot was the carbon ash smashed by the charcoal falling on the ground, but our brother saw that the gray spot looked a little strange, and it was on the edge of the balcony, quite far from the barbecue grill, and there was no charcoal nearby, so he specially extracted it and sent it to the laboratory for examination.

Good guys, the lab found plant ash from it, as well as tar and nicotine, which means that this is not carbon ash, but soot!

Zhou Jia is really smart, she is probably worried that the carbon dioxide is not dissipated, and she deliberately lit a cigarette, opened the balcony door a crack, threw the cigarette in, observed the burning of the smoke, and confirmed that the oxygen was sufficient and the carbon dioxide content was less before opening the door and entering. ”

Hearing this, Qi Yuan couldn't help but exclaim: "This girl is really thoughtful, she can think of it...... If it were me, I'm afraid I would have just gone in with a big grin. ”

"You don't call it a big grin, you call it a lack of common sense and no brains." Su Ping rolled his eyes.

After a pause, he added, "Ji Cao, don't 6." ”

The corners of Qi Yuan's mouth twitched: "Team Su, you know a lot." ”

Su Ping smiled lightly, raised his chin at Lao Wei again, and motioned for him to continue.

Lao Wei nodded, pressed the space bar to continue playing the animation, and at the same time found another investigation result, explaining:

"If the evidence wasn't enough...... Then, according to the results of the trace examination, mainly the ground grease and sweat stains, Zhou Jia moved Hu Weishan's hands after entering the balcony for the second time. At that time, Hu Weishan's hand should have been on the edge of the slide. Obviously, she is a thief.

I guess she shouldn't have seen Hu Weishan pull through the window and door, after all, the hand has been taken aside and fell a little outside the slide because of inertia, but after all, it was too close, she was weak-hearted, and she was probably worried that someone would see Hu Weishan pull through the door, and then she would be found to have locked the balcony. ”

Su Ping chuckled.

Lao Wei really doesn't have much talent in this area, it's better to be honest about technology - he completely got the point wrong, in fact, the clues and evidence mentioned above are very crucial, but the last point is a little irrelevant.

Because of the last point, Zhou Jia explained it very well, and said that he didn't know that they were dead at the time, and he was anxious to save people, so he touched the corpse.

As for how she touched it, she can actually explain it, after all, she is not a medical student, and as long as there is no obvious intentional injury to the corpse, she can prevaricate.

But......

It doesn't matter, lock the balcony door, test the carbon dioxide concentration of cigarette butts, these two pieces of evidence, enough!