novice forensic medicine

Chapter 554 Strange Timeline
"It has been found out that the brake mark of the large truck is an S mark. It was originally driving in the middle. It seems that in order to avoid avoidance, the brakes turned from the middle to the right and then to the left. The total braking length is 34 meters.

As for the police car, the brake marks from far to near are in a straight line, the brake length is 11.7 meters, and the remaining marks are particularly deep. Brother Zhao deduces that the speed of the two cars is similar, but the large truck seems to be avoiding. "

Da Zhao pursed his lips and glanced at Zou Jialong.

"This judgment is not accurate. The braking distance at 60 meters per hour is about 14 meters, and the reaction distance is 5 meters. Then the braking distance is 19 meters. The reaction speed slows down at night, and the color of the second half of 11.7 meters is light, which means that the speed of the police car Between 50-60.

The total length of the brakes of the large truck is 34 meters, and there are traces of curved driving. I think the speed of the large truck is about 100 per hour, and the brakes in the middle are not trampled to death. It's curve driving.

I looked at the brake marks, and there was another brake mark 50 meters away from the road on the east side of the police car. The big reality, my analysis is that there are cars in the opposite lane, and they are driving in the middle.

And in front of the police car, the sight of the police car was blocked. The large truck had already braked ahead of time and wanted to avoid it. Although it dodged the car, the police car following it was very close and could not dodge again, thus causing a car accident. "

Zhou Ning narrowed his eyes. Da Zhao's judgment coincided with the video shot by Wang Weili. He also felt that when the car accident occurred, there was a car driving far away, but neither the large truck nor the police car had any driving records. instrument, and there is no road monitoring around, it is difficult to judge.

"Xiao Qu, check it out. On the branch road going east from this road, the nearest intersections will be monitored, and all vehicles that appeared at the time of the incident will be checked."

Xiaoqu nodded. He was checking the call records, WeChat and QQ of several people. Zhou Ning ordered him to quickly switch the interface and start searching for surveillance. After searching for a few minutes, everyone was staring at the screen, but there was no video when he found a surveillance. Finding one is still the same, Xiao Qu is also a little annoyed.

In the end, the area expanded to the farther surroundings, and a lot of vehicles were found.

"Boss, the nearby monitoring is not useful at all. It is probably due to road construction, and the traffic lights have been cut off. The south side is at the intersection of Kangtai Road and Xicaokuang Village, the north side is at the center road of the Ecological Park, and the south side is passing by. After crossing the branch of Xiaoyang River, surveillance is only available on Nankang Road.

But there are a lot of vehicles passing through these monitored intersections. I just did a rough calculation. There were a total of 34 vehicles, large and small, during the time period when the incident occurred. "

Zhou Ning nodded.

"Check everything, find out all the information about these cars."

Xiao Qu looked constipated, and Da Zhao slapped him and gave him a wink. Don't be stupid at this time, after all Zhou Ning is also in a hurry.

"Zhou Xiaozhou, let's go. Let's find a tow truck here to get the two cars back. Zhang Qiangmin and the others should have started the autopsy on the body of the truck driver. Should we take a look or go to the hospital."

Zhou Ning thought for a while and waved his hand.

"Go to the hospital first. If you don't have a car record, you have to listen to what they say. Let them do the autopsy of the driver of the big truck. No matter what, the speeding of the big truck can't run."

The traffic policeman nodded.

"We also feel that large trucks are speeding and driving fatigued. After all, this time point is when people are most tired."

Zhou Ning smiled and nodded towards Wang Weili.

"Thank you. If you think of anything else, you can call us at any time. If we find some special scents later, we will ask you to identify them."

"No problem, then I'll go home first."

Wang Weili drove away on a tricycle, turned down a dirt road next to the accident site, and drove straight towards the village. Zhou Ning glanced at it. Indeed, from that position, he could not see the road on the east side of the cart. Line of sight blocked.

Everyone got into the car, there was no other nonsense, Xiao Qu was busy all the time, and only stopped when passing through the tunnel, Zhou Ning didn't ask any more questions.

Just as the car was approaching the Central Hospital, Xiao Qu shouted:
"I have compared the call records of the boss. Xu Qingquan's call records in the past three days, a total of four calls were made, and seven people answered, most of them were colleagues from the orchestra. 9 had one call, and only two calls with his girlfriend Zhong Xiaoyan.

One was at 8:30 pm on August 2th, and the call lasted less than 9 minutes. Then at 1:13 on September 33st, I checked. This time should be after Li Li fell from the building. Zhong Xiaoyan called Xu For Qingquan, the call time is up to 8 minutes. "

The call with Xu Qingshu was in the past to pick him up and drop him off at the station, and Zhong Xiaoyan saw someone drive a car through the wall and fall from a building. Most people were frightened, and it was normal for them to call their fiancé for comfort. .

It's just that Zhong Xiaoyan probably didn't know that the person who had the accident had such a relationship with his fiance and sister-in-law, and Xu Qingquan at the time didn't know that it was Li Li who had the accident.

To Zhou Ning's surprise, there was no Li Li in the call log.

"Looking forward, there is no phone contact between Li Li and Xu Qingquan. Could it be that they are in contact via WeChat or QQ?"

"Wait a minute, I found one of Li Li's WeChat accounts at first, but this one was for contacting all the parents of the students, that is, for office use. After Kong Wanshan appeared, I found another WeChat account. This account is related to Kong Wanshan himself. connect.

Boss, don't do anything, I'm going to get to the key point right now. Through Xu Qingquan's WeChat account, I found out that the two previous WeChat accounts were registered with her real-name mobile phone, while the other number is not real-named.

This registered WeChat ID has been in contact with Xu Qingquan. The two of them don’t talk much, and there are no ambiguous pictures, texts, and voices, just time, question marks, and numbers. The numbers are the ones with addition and subtraction symbols. I haven’t read them for a while. clear. "

Big Zhao came over.

"What about addition and subtraction? You said I'll break it down for you. I'll tell you a joke like this. I know a lot."

Xiao Qu didn't dare to delay, found the chat records, pointed to a part of it and said:

"What does three minus eight mean with a question mark?"

Da Zhao paused, raised his hand to touch Xiao Qu's forehead, and Peng Shinian also came over and interjected.

"What do you mean, I don't understand, can you explain carefully?"

Da Zhao sighed and looked at the two with distressed eyes.

"Cultural people, just go to learn culture, Zhu Xingxing covered his ears, let me tell you what it means, these are Chinese characters, of course you don't understand, it has to be represented by numbers, and the three and minus signs should be closer together , does it look like a male organ looking down 3-.

As for 8, it is a pictograph here, so I don’t need to explain it, right?Combined, adding this question mark, and this specific time, an analysis is actually a question sentence, are you dating tonight?You see what Li Li replied, 'W! 'That's a little later.

So these seemingly messy content are actually the time when the two are dating. According to the above content, the two meet at least three times a week, and they are all after eleven o'clock in the evening. are closely connected. "

Zhou Ning looked up at Da Zhao, Da Zhao quickly shut up, he knew he was talking too much, Zhou Ning turned up and didn't see the first time, so he asked:
"When did these two people start contacting?"

"I added such a friend when I registered in November 2012. It seems that at this time, they have already known each other."

"Did Xu Qingshu say yesterday that when did Xu Qingquan decide to marry his girlfriend and establish a fiancee relationship?"

Big Zhao thought about it.

"It seems to have been said, the two were going to get married in October last year, and then bought this house in November, my God, did they buy this house because of Li Li, or did they know each other after buying this house, So didn't they hook up before they moved here?"

Zhou Ning sighed, the information obtained now is not accurate, it seems that one by one has to be checked.

"One is dead, and the other is not out of danger yet. Go to the hospital and get the keys to Xu Qingquan's house. Let's go to their house to have a look. After all, the pillow that the deceased Li Li was holding in the morning appeared in Xu Qingquan's suitcase. , although it was not the last person I saw before my death, but the two have a family relationship and a motive."

As he spoke, the car swayed, and Zhou Ning glanced out the window. At this time, he had arrived at the Central Hospital. Zhou Ning looked inside the car. He couldn't let everyone get out of the car. It was too scary.

"Big Zhao, come with me, you guys are waiting in the car, it's too oppressive to go together."

Peng Shinian raised his hand and stood up straight away.

"Can I follow? I want to collect the remnants of Xu Qingquan's shoe soles. I'm not going to Xu Qingquan's house in a while. The deceased's house is also downstairs. I want to collect the dust from the two rooms. This can also be compared. The microcosm of living things."

Several people looked at Peng Shinian, Zhou Ning nodded, waved his hand and said:

"Then let's go together, you just don't want to hold the things for collecting samples."

Jumping out of the car, Da Zhao poked Peng Shinian's arm curiously.

"Tell me, what is the microcosm of living things, and what do you want to compare?"

"For example, dust mites are one kind of things contained in dust. The two of them often play poker and roll sheets. Dust mites must communicate with each other. There are 34 types of things. Who has been there and whether they are left on their bodies can all be used. There are traces, and we can compare aspects such as maturity.”

Da Zhao looked surprised, looked up and down at Peng Shinian, his eyes fell between his legs, Peng Shinian took a step back vigilantly, clutched his crotch, tilted his head and looked at Da Zhao suspiciously.

"Zhao Henjian, your eyes are scary. Why are you staring at me? You don't have a girlfriend. Don't tell me you have a problem with your orientation."

Da Zhao rolled his eyes and burst out laughing.

"It's okay, I'm just surprised, your Chinese level is improving with each passing day, and now you know what it means to play poker."

　During the attack of tenosynovitis, the claws hurt!Thanks to my favorite uncle for the reward!
　　
　
(End of this chapter)