Zhou Ning hurriedly held the bag, walked to the LED light, and took a closer look, and found that the blood fingerprint was not clear, and it looked similar to a blood droplet.

No wonder Xu Guanhai didn't mention this blood fingerprint, it is estimated that he felt that such a fingerprint that could not leave lines was not necessary to be collected.

However, if you look closely, the lower part of the fingerprint is all horizontal lines, and there are no undulating longitudinal lines, which makes Zhou Ning's eyes light up.

Although the upper part cannot be seen, it is enough to prove here that the owner of this fingerprint is most likely a bow.

"I suspect the killer had a bow."

The people around them all gasped, and hurried over to take a look, Xia Momo and Xiaoqu glanced at each other, looking a little dazed, Xia Momo looked at Zhou Ning and asked:

"Are people with arcus lines special?"

Zhou Ning nodded.

"Most people have spiral fingerprints or ring fingerprints, which are called buckets and dustpans, and only 5% of people in the world have arcuate lines, which are characterized by the gradual reduction of the arc of the lines from the tips of the fingers to the knuckles, and the parallel to the flexor line of the knuckles near the knuckles.

If the protruding point formed by connecting most arcs with a straight line is the central axis, it can be divided into three arc patterns of left, right and non-tilt depending on its tendency. According to the height of the central arc line, it can be divided into three arc lines: low, medium and high."

Liu Yongxin waved his hand.

"It's too complicated for you to say that, to put it bluntly, the arcuate pattern is the fingerprint with only a slight curve, it is difficult to see such a fingerprint in daily situations, there are certain genetic factors, but not necessarily the whole family is like this."

Xia Momo and Xiaoqu subconsciously looked down at their fingers, as if they had never seen such a fingerprint person.

Zhou Ning squinted, looked at Da Zhao, and then looked at the sky outside.

"Da Zhao called the Xu Bureau, and when the investigation is carried out tomorrow, all the people who are investigated will have their fingerprints collected and look for people with bows."

Xia Momo shook her neck, she stayed up all night last night, and rushed to Rudong City for the first time, and even tossed with Zhou Ning for a day to repair and polish the portrait of the deceased, at this time her neck was sore, but looking at such a special fingerprint, she became interested.

"I really haven't seen such fingerprints, otherwise I would have swished in the database."

Xiaoqu shook his head and leaned over, turned the computer in a direction, only to find that this product is even more urgent, people have scanned this blood fingerprint, to find it in the system, but it shows that the fingerprint feature collection is not sufficient, whether to continue to look for it.

Seeing this, Xia Momo also sighed.

Zhou Ning raised his eyebrows.

"What do you mean?"

Xiaoqu knew that although Zhou Ning was involved in the design of the software, the information he provided was directional, as well as the combination of various acquisition and application, and he was not clear about the details of these operations.

"In this case, if there are less than four feature points on a fingerprint and the completeness of the fingerprint is less than 30%, then the results of this model lake search will be a very large data.

It's similar to not searching, just like this person suspects that it is a bow, then it may be that the person who has a bowbow pattern in Ludong Province or even the whole country, and the data below you is the result of the Mohu search."

Although arcux is rare, accounting for about 5% of the world's population, it is also an astronomical number to find out all the people with arcux patterns, and indeed this screening is meaningless.

Zhou Ning came to his senses and looked at the number pointed out by Xiaoqu, even if he knew that the murderer was inside, it was impossible for him to investigate it individually.

"Among the four members of the Xu family, is there anyone with a bow-shaped pattern?"

Xiaoqu tapped on the keyboard and searched for the fingerprints of the four members of the Xu family, the fingerprints of the Xu family's parents and brother Xu Qing, there was no problem, all of them were normal fingerprints, but Xu Dan's fingerprints were only the fingerprints of his left hand and right thumb and index finger.

There is a note below, Xu Dan's right hand is fractured, the remaining three fingers, the fingerprints are incomplete, and it cannot be entered, so it is hereby explained.

Xiaoqu hurriedly glanced at Zhou Ning, Zhou Ning didn't say much, after all, such things happen occasionally, but they will generally be made up later, unless these three fingers can't

Supplemental fingerprints.

"Okay, then I won't search today, hurry up and Zhu Xingxing will arrange a place for Teacher Xia to rest, and tomorrow I will be assigned to the following with the working group and follow all the teams to carry out the screening work."

......

Early the next morning.

Everyone was assigned, only Liu Yongxin and Da Zhao followed Zhou Ning and drove towards Renjiazhuang Village together, walking for more than half an hour on a road of more than ten kilometers.

Coming down from Provincial Highway 213, I saw Sun Shouzhen Middle School in the west of the road, and I didn't go far from the intersection to the east, and I came to the door of Xu's house.

Zhou Ning got out of the car and did not rush in, but circled around the Xu family.

There is a small road on the left and right sides of the yard, a ditch on the north side, and a pig farm not far away, where some sounds can be heard.

Liu Yongxin and Da Zhao followed Zhou Ning, did not speak, did not open their mouths, and walked to the main gate of Xu's house together.

On the left side is a doorman room with the sign of Renjiazhuang Clinic, but the clinic is locked, you can see that there are several beds inside, as well as the dispensing room and the consultation room, and you can see that the dispensing room is full of various medicines.

The courtyard in front of the Xu family should have been flipped, in front of the original dilapidated main house, a small second floor was raised, and there was a door-like passage below, so that there was an extra courtyard at the back.

On the left and right side is the garage, and on the other side is the kitchen and dining room, which is very large, and it seems that most of the family gatherings are here.

As for the attic, it is on the second floor of the dilapidated main house at the back.

After passing through the passage, I came to the courtyard at the back, and when I walked to this position, I could clearly smell a stench, but this smell was mixed with some sandalwood.

Zhou Ning turned his head to the side and found that behind the second floor of the flip cover, there was a huge incense burner, which was densely packed with a lot of burned incense buttocks, and the incense ash in it was very thick.

This effect is not bad, it has been so many days since the eucalyptus was reported on February 28, and there can still be such a heavy sandalwood fragrance in the backyard, it is estimated that it has been smoked.

Da Zhao walked to Zhou Ning's side, pointed to the door of the main house and said.

"Just go to the first and second floors and take this gate, and go to the attic, you have to go to the side, there is a separate wooden staircase over there."

Follow Da Zhao, climb up the wooden stairs, the more up, the stronger the smell, Da Zhao held the flashlight on his mobile phone, shone it, and then turned on a switch, and the dim attic was instantly illuminated.

The clutter in this has been cleaned out, and there are some circles and frames drawn on the ground, Da Zhao introduced it, Zhou Ning kept nodding, and followed him all the way to the window.

The wooden planks on the ground here are already black and purple, and there are maggot shells around them, and the maggot shells are also arranged in a ring around the position of the circle on the ground.

"The number of maggot shells is very large, and I think it's because the corpses are packed in bags with clothes underneath, so the space for flies to go in is a bit small, and when flies eat and decay, they produce a lot of putrefactive liquid, which also prolongs the decomposition time of flies.

If it's summer, it lasts at least 20 days before it is eaten clean, and if it's spring and autumn, it's at least between 30 and 40 days."

Zhou Ning glanced at the marks on the ground, opened his eyes slightly and said:

"I feel that in late spring and early summer, or late summer and early autumn, the day of the deceased's death should have just cooled down, and the suit on his body, although it was wool, I always felt that the clothes were not his, after all, it seemed a little too old-fashioned to wear such a dress at this age, and I think it was to look formal."

Da Zhao was stunned.

"When Zhou Xiaozhou was in the office, why didn't you say so much judgment, did you already have some direction?"

Zhou Ning nodded.

"There are a lot of people in the office, and Dr. Xu is old, so it's inconvenient for me to say a lot of things."

Liu Yongxin understands that the apprentice is giving him face, although this Xu Guanhai works very hard,

However, his ability is average, and he has always eaten his old book, which is not the same as Liu Yongxin, after all, Liu Yongxin can carry all the things in Qidong by himself.

"I don't have any face, next time I have an idea, you doubt the Xu family, right?"

Zhou Ning nodded.

"Although this house was originally lived in by the old man of the Xu family, I always felt that this matter had something to do with their family, but I don't know why, this person was killed, why didn't he dispose of the body, don't you care about this smell?"

Zhao Xinli was anxious, and stomped in front of Zhou Ning.

"Don't skip a step, I haven't understood it yet, you and Uncle Er are starting to talk about the next step, this scene is just a person, are you excluding me? It's too much!"

Zhou Ning smiled, Da Zhao always has a way to make people can't ignore him, and it's not disgusting.

"Last night, Xiaoqu found that Xu Dan had three fingerprints that could not be entered, I think it was too much of a coincidence, after all, the body was found in the Xu family, and everyone in the Xu family was suspicious, not to mention that they were suspects, at least this may be the first scene, so I decided to come over and take a closer look."

Da Zhao realized.

"I didn't care at the time, didn't it say that she had a broken right hand and couldn't collect fingerprints, so didn't she make up for it later?"

Zhou Ning shook his head.

"Don't worry, let's take a look at the scene first, anyway, Xu Dan sent someone to collect fingerprints there, and the most important thing now is to find the first scene, although the attic is used to hide the body, the deceased may not have been killed here."

He has *** and lidocaine in his body, an adult man, even if he is not heavy, to get a big living person in a coma to the attic, but it is not easy, maybe the first scene is in the Xu family."

Liu Yongxin nodded and waved his hand at Da Zhao.

"There is no way to inquire about the identity of the deceased now, we can only start from here, you hurry up and ask the people of the village committee downstairs, when was the house in front of the Xu family built."