Xu Dayuan nodded.

"When I came out of Xing Xiaoli, I felt that everyone in the figure skating team seemed to be suspicious, especially Wang Ying, who opened her mouth and closed her mouth to burn Sister Xiao Lige.

But you're not welcome, now that everyone is detained on the third floor of the gymnasium, I want to meet you and go back and talk to them separately. ”

Zhou Ning put down the whiteboard marker and said with a slight bow:

"We'll study the bones later."

got Zhou Ning's affirmative answer, Xu Dayuan shook his phone.

"Cheng, then I won't bother you here, there are still a lot of things over there, if you have any news, tell me as soon as possible."

Sending Xu Dayuan away, Zhou Ning came directly to the laboratory, after all, the bones of the deceased were placed here, Xia Momo heard the sound of the door opening and saw Zhou Ning and Liu Yongxin coming in.

"Xu Da is gone?"

"Well, the cervical section and the hand and foot section have been scanned?"

Xia Momo nodded and clicked on the big screen.

A huge picture appears, the whole picture is a cross-section of the cervical vertebrae, the transverse marks on it are very obvious, and even some bone chip defects can be seen.

"It's all too clear."

Liu Yongxin sighed in surprise, after all, he didn't understand these new homes.

"This is a high-definition camera that has just been installed, which can take pictures under the microscope, and many details can be observed in more detail, Zhou Ning asked me to contact Dr. Lu to borrow it."

Liu Yongxin looked at Zhou Ning, who was staring at the picture, obviously his good apprentice had a plan in his heart, but what can be found in the section?

"Do you want to judge whether the murderer is left-handed or right-handed?"

Zhou Ning nodded.

"Well, I've always had a suspicion, and I always felt that the murderer was somewhat familiar, but you asked me to say it, and I couldn't say it, so I wanted to see the details of the section, whether it was the proficiency of the cutting, or the application of the left and right hands, to see if I could find some hidden information.

The first scene brought back the hand saw, you see, no matter how ordinary, this is not like a chainsaw, you can buy it in any hardware store or a big supermarket, I asked Da Zhao to buy pork legs, pig necks and hand saws, and we will do experiments for a while, and then compare. ”

Liu Yongxin came over and stared at the screen carefully like Zhou Ning, the texture of the cutting surface has a strong sense of direction, and the location of the defect is estimated to be the fracture of the saw blade, but the frequency of the connection is almost the same.

"It looks right-handed, very skilled, and the power is very balanced."

Zhou Ning nodded, Liu Yongxin's analysis was the same as what he thought.

"Good physical strength, strong hand control ability, good at using tools, often watch CSI and other films, have anti-reconnaissance ability, and know some ways to destroy bloodstain DNA."

Liu Yongxin raised his eyebrows.

"According to this analysis, haven't Wang Ying and Zhuang Chunlan already ruled out suspicion?"

At the same time, the door was opened, and Da Zhao heard his voice before he saw anyone.

"Hurry up and help, I can't carry it anymore, who will help lift the pig's head quickly?" The three of them turned around together, the door had been opened, and Da Zhao kicked the door, pulling his neck and shouting.

But a few people, in their minds, are thinking about the word pig's head.

"Pig's head?"

"I said Zhou Xiaozhou, don't be stunned, come over to help first, I can't let go of my hands, my sleeves are scraped on the code scanner!"

A few people walked over quickly and found that there was a big pig's head behind Da Zhao, Xia Momo was startled, after all, the pig's head was trembling and his ears were still shaking, Zhou Ning glanced at it and found that this was not a pig's head, it was the first half of a pig at all.

"How much did it cost?"

Da Zhao rolled his eyes.

"Zhou Xiaozhou, this is a matter of money, help me! Don't worry, I'll ask Director Pang for reimbursement, and I won't let us bear the cost. ”

Hearing this, Zhou Ning hurriedly helped Da Zhao untie his sleeves.

Several people carried half a pig to the operating table on the other side.

Yang Xuetong was holding a bunch of tools, and he also came in, and was startled when he saw the pig.

"Isn't it too much to do an experiment and get half a pig?"

Da Zhao smiled, wiped his hands clean, and then said with his waist inserted:

"Practice is the only criterion for testing the truth, let's study for a long time, we can't see anything, I make half a pig, the strength of the bones is not the same, so just make a front half."

Xia Momo glanced at it.

"And what about the second half? People sell you like this? ”

"Of course sell, let's try it quickly, Zhou Xiaozhou, you pick it, who will cut it?"

Zhou Ning looked at a few people, and his eyes fell on Yang Xuetong, after all, Xia Momo had to do software operations and related records, Zhu Xingxing looked at the pig and hid backwards, Liu Yongxin was not good in physical strength, and Da Zhao was too energetic.

"Yang traces, listen to Mr. Xia's command, let's follow the murderer's cutting action to see if we can achieve such a neat cutting surface and a balance of strength."

Xia Momo calculated and drew a longitudinal line on the pig's feet.

"Cut where I drew the line, but I need to collect some data, you can wait a minute."

As she spoke, Xia Momo placed a pressure pad under the pig's feet, connected it to the machine, and then clicked on the collector, which was an OK gesture.

Yang Xuetong didn't talk nonsense, put on gloves, raised the hand saw, and began to saw along the position where Xia Momo drew the line.

After all, there are a lot of dry marks checked, and the hand is very stable and the strength can also be, the first time you go down, you will directly poke the saw blade on the pigskin, and you will reach the position of the bone in a few clicks, and you can feel the increase in resistance on the hand, but the speed is controlled, and soon the front end of the pig's foot falls.

Zhou Ning pressed the stopwatch of the timer and sawed off a pig's front foot, 4:43 minutes.

Picked up the fallen pig's feet and checked the section, not to mention that the surface is basically the same as the section of the deceased's tibia and fibula, they are all strip-shaped cross-sections with a sense of direction, which are quite neat.

"Go on!"

This time, several people put the pig on the ground, Xia Momo put a pressure pad, Yang Xuetong knelt on one knee, controlled the direction of the hand saw with his legs, and began to squeak and saw.

The cutting speed of the skin and meat of the pig's neck is very fast, and when it reaches the position of the cervical vertebrae, it is slightly stuck, and sure enough, the saw blade is broken, and it takes a total of ten minutes to continue the operation, of course, the time to change the saw blade is also counted.

Yang Xuetong stood up and shook his somewhat sore wrist.

"Did the team leader also use a saw to compare the other front pig's foot?"

Zhou Ning shook his head, and Zhu Xingxing raised his hand.

"Team leader, why don't I try it, I happen to be left-handed, or use it as a reference to compare time and strength?"

"Okay."

Zhou Ning nodded simply, Zhu Xingxing came over, and began to learn from Yang Xuetong's appearance, working hard towards the front pig's feet, I don't know if I kept watching, so I also summarized Yang Xuetong's movements, and it took her only 5:03 minutes to cut the front pig's feet, which was comparable to Yang Xuetong's speed.

Zhou Ning paused the stopwatch and raised his head slightly.

"According to this rate, the murderer will take about half an hour to divide the body in the Enbo community, kill the deceased, divide the body into boxes, and clean it, then the time spent in the Enbo community will be at least an hour, and it is possible for both men and women."

Several people nodded, but Xia Momo spoke at this time.

She calculated something on the computer and had the result.

"Comparing the data just collected, Yang Xuetong and Zhu Xingxing are very different in strength, but the degree of completion is different, you can find that the lines on the cross-section are different."

As she spoke, Xia Momo put the three pictures on the big screen, and the first one was the cross-section of the deceased's cervical vertebrae, the second was the cross-section cut by Yang Xuetong, and the third was completed by Zhu Xingxing.

The first two surfaces are relatively uniform, the transverse lines are clear, and the spacing of the lines is almost the same, but the cross-section cut by Zhu Xingxing is much rougher, the spacing is large and small, and even the depth of some places is inconsistent.

"The strength is not enough, that's why there is such a situation, I think the murderer's strength is greater than Zhu Xingxing, and his strength is similar to Yang Xuetong's."

Zhou Ning tore off his gloves, washed his hands, and then said slowly:

"It seems that the murderer is an adult male, right-handed, so the suspicion of Zhuang Chunlan and Wang Ying is small, let's wait for the test results, and of course, there is also the investigation of monitoring, when will Xiaoqu come?"

......

October 7th, 2011 at 7:33

As soon as Zhou Ning entered the office, there was a shout from behind, and when he looked back, he saw Da Zhao walking with a stack of inspection reports.

"The deceased has been identified?"

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