Sister Cui was stunned.

"Don't rush, the inspection report and comparison report here are all out, and they will be sent to you after printing, and then the electronic version will be sent."

"Okay, thank you, big sister."

Hanging up the phone, Da Zhao came over, he felt that Zhou Ning didn't seem to have something to say, and swallowed it back.

"What's wrong Zhou Xiaozhou, do you want to do any experiment, and I feel embarrassed to speak, what are you going to do, I'll go."

Zhou Ning nodded.

"Call a few people, go to the freezer, find Liu Meiling's body, spray it with luminol reagent at the location of the bruise on the deceased's neck, and record the whole process."

Da Zhao didn't talk nonsense, dragged Fang Mu, and the two went together.

When the person left, Xu Dayuan blinked and looked at Liu Yongxin, Liu Yongxin was obviously stunned, and then sighed and said:

"Xiao Ning suspects that the DNA left on the bruise on the deceased's neck was smeared by the murderer with bloodstains, and as for the blood dripping from the wound of the deceased, it was also deliberately left by the murderer, of course, in this way, it is even more impossible to determine who the murderer is."

Hu Guangjian also stood up, after all, he was the leader on the front line, and he was quite indifferent, and called Xu Dayuan out.

Liu Yufei leaned over and asked in surprise:

"The DNA is all deliberately left behind, so wouldn't it be useless for our investigations?"

Zhou Ning shook his head, there is very little evidence available, Xu Qingquan tends to identify the murderer as Zhong Xiaoyan, but the characteristics he said are all unraveled one by one, the scar perfume Zhang Fangfang has it, and the suspects directly become two people, if the DNA matches Zhang Fangfang, then Zhang Fangfang will become the biggest suspect in this case.

At this time, Zhou Ning's mobile phone rang, and he received a video from Da Zhao, and with the spraying of Luminol, sure enough, at the bruise on the neck of the deceased, there was a fluorescent reaction of the same shape, although it was very light, but this was bloodstains.

Zhou Ning dialed Da Zhao's mobile phone.

"Tell Lao Yang to come down, look carefully on Zhang Fangfang's car, see if there are shoes or clothes, the hidden gap in the trunk, or the gap in the spare tire, if there is anything in it, find it and tell me."

Zhou Ning didn't speak again, what did this command mean, Liu Yongxin understood, Peng Da and Liu Yufei glanced at each other, and they also knew what it meant, since someone planted it, then there should be something more solid, but I didn't find it.

After waiting for more than ten minutes, Xu Dayuan and Hu Guangjian didn't come back, Sun Gaotie came first, holding a thick stack of reports with a lot of post-it notes on them, and Zhou Ning took it and took a look.

This is simple, they have all been classified, Sun Gaotie closed his mouth and did not take the initiative to introduce, after all, Zhou Ning hates to read the report the most, and someone keeps talking about it.

As they watched, as they distributed the report to Liu Yongxin, they watched, and when they saw the end, there was no trace of joy on Zhou Ning's face, and at this time, Xu Dayuan came back, saw such a thick stack of reports, and looked directly at Zhou Ning.

"What does the report say?"

"1. The DNA of a man and a woman was extracted from the bones, and after comparison, it was compared with Zhong Xiaoyan's biological father-daughter and mother-daughter relationship, and it had nothing to do with the DNA extracted from Liu Meiling's facial wound;

1. After comparison, the DNA extracted from Liu Meiling's facial wound and the DNA extracted from the neck pinch mark are consistent with Zhang Fangfang;

2. The vitamin A extracted from Li Li's inner blood, as well as related impurities and metabolites, are similar to those extracted from Xu Qingquan's blood sample, and the impurities in Xu Qingquan's inner body are greater than those in Li Li's body; ”

"Wait, what does that mean?"

Xu Dayuan stopped Zhou Ning, and Zhou Ning hurriedly explained:

"That is to say, most of the vitamin A eaten by the two of them is the same, but the type of vitamin A in Xu Qingquan's body may be more complicated, which is also in line with our initial judgment, and the dosage and poisoning amount were all tested on Xu Qingquan."

Xu Dayuan waved his hand at Liu Yufei and said:

"Call the people left behind in the hospital and ask them to ask Xu Qingquan, did he often eat the food cooked by Zhong Xiaoyan when he got along with Zhong Xiaoyan before? Also Does Zhong Xiaoyan bake? Zhou Ning, you continued. ”

Liu Yufei went to the side to make a call, and Zhou Ning hurriedly flipped to the next report and continued.

"4. Regarding the brake marks, the gas chromatography of rubber pyrolysis was used to compare them, and it was concluded that the faint brake marks on the east side of the accident scene at a distance of 50 meters were completely consistent with the brake marks of Zhang Fangfang's BMW wheels;

5. Among the samples 133 and 178 brought back from Kaifeng City, Zhang Fangfang's DNA was found, and sample 133 was marked as a sample sampled from the doorknob of Page Hut, and sample 178 was a hair extracted from Liu Meiling's room. ”

Speaking of this, Zhou Ning stopped, and Xu Dayuan had already widened his eyes.

raised his hand and gestured for a long time, but he didn't say anything, and then Liu Yufei came back.

Looking at everyone, Liu Yufei knew that during the time she was out, there were more exciting test results, so she didn't delay and hurriedly said:

Xu Qingquan said that Zhong Xiaoyan never went into the kitchen, and often ordered takeout, placed it on the dinner plate, saying that she made it, and as for baking and the like, she didn't know it, but among the people she knew, Zhang Fangfang's cooking skills were the best.

In addition, I just received the news that from noon on August 31 to the afternoon of September 2, Zhang Fangfang was in Qindao, she attended a wedding, she was Zhang Fangfang's cousin, but her parents did not come back, the wedding time was September 1, the photo shows that she returned to Qin this time is the BMW she drove. ”

Several people were a little dumbfounded, messing around, and now Zhang Fangfang has become an important suspect, at this time Zhou Ning's mobile phone rang, Da Zhao sent a video call application, and Zhou Ning clicked to connect.

"Zhou Xiaozhou, we dismantled Zhang Fangfang's BMW, the wheel gap Wang trace inspection all extracted sand and gravel, the trunk spare tire baffle was disassembled, there was no spare tire inside, only two huge garbage bags, I showed you, there is everything in it, shoes, gray cleaning clothes, hanging rubber gloves, ignition spray gun, and a dagger."

As he spoke, Da Zhao raised the dagger with long tweezers, and the black-purple blood stains on it were too conspicuous, and these things didn't need to be introduced to know what they were.

"Make a mark, send it for inspection, I'll go down and take a look now, the driver's steering wheel should be carefully sampled, and there should be no omissions."

"I understand that the steering wheel, gear knob, seats, keys, door handles, these positions, I have people use adhesive tape to extract, for fear of negligence, all say that where there is contact, there must be traces, I stumbled this time."

Zhou Ning hung up the phone and glanced at Xu Dayuan.

"Leader, can I talk to you alone?"

"Let's go, go down and take a look at Zhang Fangfang's car, we did neglect to survey this car."

The two walked downstairs and came to the backyard, not approaching the busy Da Zhao and them, Zhou Ning handed Xu Dayuan a cigarette, the two lit it, and they didn't speak for a long time.

After a while, Xu Dayuan sighed.

"Isn't it uncomfortable?"

"Yes, I found out Shi Yun's experience, as well as the cause of death of Shi Mingchen's family, I was resentful, I thought about what I would do if it were me, I thought about it for a long time, and brought it into a girl's perspective, I don't think I necessarily have Shi Yun doing well.

But when the case was investigated until now, when all the evidence pointed to Zhang Fangfang, I was confused, maybe Shi Yun also had hatred for the police, back then, whenever someone interrogated and the police intervened, the outcome might be different, but even if the news broke out, no police asked.

You saw the video sent by Da Zhao just now, those things found in the trunk, I'm sure, there are Zhang Fangfang's fingerprints on it, and Zhang Fangfang's DNA, and now she has become the first suspect, what should we do? ”

Xu Dayuan took two puffs, threw the cigarette butt on the ground, and smiled at Zhou Ning.

"Remember, we are just policemen, not judges and not lone heroes, do our best to investigate, correct our mentality, and present all the evidence, this is what we should do, as for how this case will be judged, it is not for us to worry about, let me ask you a question, when you know Shi Yun's experience, do you have an impulse not to investigate?"

Zhou Ning was silent for a long time before raising his head and nodding slightly towards Xu Dayuan.

"Yes, I didn't want to investigate at the time, I didn't want Shi Yun to be caught, and I didn't want her to leave traces, but."

Xu Dayuan patted Zhou Ning on the shoulder.

"No, but, how to investigate, you can investigate how you want, you go and see Da Zhao and them, I'll go upstairs and talk to Zhang Fangfang, since I found new physical evidence, there is no need to talk to Zhong Xiaoyan deeply, after the investigation will be completed in a while, get off work early, and wait for the results."

A few words seemed to make Zhou Ning find a hint of direction, and without much greeting, he walked straight towards Da Zhao and them.

"Survey finished?"

Da Zhao nodded.

"This car, surveyed before, but not so detailed, at that time on the steering wheel and the driver's seat, only Zhang Fangfang's fingerprints were found, and after the DNA comparison was sent for inspection, because this is not important, I didn't shoot in front, so this time there was no result.

But I really didn't expect that the murder weapon and clothes and gloves could appear in the box of the spare tire of the vehicle, you said that if Zhang Fangfang was not wearing it, how could Zhang Fangfang's DNA be left on it? ”

Zhou Ning shook his head.

"I don't know, I still can't guess the process, I'll go to Xiaoqu to see if there are any new discoveries in the monitoring and analysis, you can get off work after sending it for inspection."

Da Zhao grabbed Zhou Ning's arm, looked in the direction where Xu Dayuan left, and asked in a low voice:

"What do you mean by the leader, you must let us find the DNA left by Zhong Xiaoyan?"

Zhou Ning shook his head.

"The leader said that doing what we should do, judging and convicting, is a matter for the court, I think it makes sense, don't investigate because of our subjective will, this is biased, don't talk nonsense and get to work."

Da Zhao shrugged his shoulders and let go of Zhou Ning's arm, Zhou Ning walked quickly to the laboratory, and some samples had been sent here, after all, Peng Shinian was the most professional in the analysis of grit and seeds.

Seeing the busy Xiaoqu, Zhou Ning walked over.

"How's it going, are there any new discoveries on the surveillance?"

Xiaoqu raised a bitter gourd face, looking like she was going crazy.

"Boss, I found Zhang Fangfang's car, in the time after the accident, driving in the opposite direction to the west, after getting on the Huanwan Expressway, getting off at the Shuangbu Expressway, and after tracking a few kilometers to the south, I lost my trace."

(End of chapter)