The bookshelf Zheng Heming was referring to stored the information not a few children with deciduous teeth and tooth decay, but hundreds, and the time for collecting photos ranged from the child's teeth change at the age of five or six to the child's age of about ten.

Basically, a photo was taken in the first half of the year, and in the past five years, there have been a lot of accumulated photos.

"These photos were collected for me by my friends all over the country, and now people talk about health, and there are not many children who can find caries, so many years, with the help of friends, I have collected such materials."

This is the same as making old software, in addition to writing programs, the most important thing is to collect more people's appearances, only when the base is large, the algorithm of the software will be more perfect.

Xu Zheng probably flipped through it, "Mr. Zheng, although these materials are few, they are available in most parts of the country, even if they are not representative, they can give me a direction, which is very good." ”

Speaking from the heart, Xu Zheng is very envious of Zheng Heming, just this friend from all over the country insisted on providing him with materials for five years free of charge, which he can't do, he is not a social cow himself, and he has few friends in other departments in addition to his classmates in college.

Now as soon as he works, there is little contact between classmates, and in the WeChat group, he rarely shows his head to speak, especially after he is transferred to the Municipal Criminal Police Detachment.

Of course, this is also different from the direction he chose after graduation and did not take the postgraduate examination, and most of his classmates chose to go to the police station as a small policeman.

Seeing Xu Zheng pondering, Zheng Heming smiled, pointed to other bookshelves and continued to introduce him: "In addition to these, there are also some other factors on other bookshelves, such as regional factors, serious illness, disfigurement, snoring and other conditions.

It's just that like tooth decay, the material collection is relatively small. ”

"It's less, it's more than I thought, and I only realized it today, but you started working on it five or six years ago." Xu Zheng admired it and said sincerely.

Zheng Heming waved his hand, "What's the use of researching early, there are still no good results after so many years." However, if you join me in this project this time, I think it will be very promising. ”

Xu Zheng didn't want to wear a top hat, and he didn't want to dampen the enthusiasm of this old man, so he could only use the procrastination trick, "Teacher Zheng, I don't have much time right now, I'm going to get married in two days, and when I come back from my marriage leave, let's talk about it."

"Haha, look at me, I forgot about your upcoming marriage, don't worry, don't worry, it's not too late to talk about it after you go to work on your marriage leave." Zheng Heming smiled reluctantly, no matter how anxious he was to get married, he couldn't rush it.

Qi Guangyuan next to him looked at the teacher's appearance and stroked his palms and laughed, "You don't know yet, Xu Zheng will be transferred to the Provincial Pursuit and Fugitive Office next month, and his office will also be in the Provincial Department in the future, so it will be very convenient for you to find him if you have something." ”

"Provincial Fugitive Pursuit Office?" Zheng Heming showed a strange look on his face, "I often cooperate with them in this department, so, Xiao Xu, I have a reluctant request, I hope you can consider it." ”

Xu Zheng looked at Zheng Heming's face became serious, and his heart was a little drummed, this old man would not let him do the work of criminal investigation technology, although technical investigation engineers, and even senior engineers have very high honors and treatments in the police force, but how can there be interesting work on the criminal investigation line.

Besides, he already has advanced analog portrait technology, even if he works with Zheng Heming, it is very difficult to upgrade the analog portrait technique to the master level, he does not lack knowledge and talent now, only lack experience, whether he does the work of analog portrait, he can become a master after all.

"Xiao Xu, I think so, I am now in this portrait processing studio, and I provide technical support for portrait processing to the Provincial Department of Fugitive Pursuit Office, Anti-Abduction Office, Criminal Investigation Corps and other departments on weekdays.

Aren't you going to the provincial fugitive office now?

Can I also take on my side of the job, and in terms of administration and remuneration, I will propose to my superiors that I am on par with the engineer, what do you think? ”

Concurrently holding a formal job is very common in the system, and many leaders have a series of professional titles, and it is completely okay for Xu Zheng to work in the Fugitive Pursuit Office and then work in Zheng Heming's studio.

Since this is the case, he didn't pretend anymore, "It's okay, Mr. Zheng, but there is one thing, you also know that the work of the Fugitive Pursuit Office sometimes requires a business trip, and I can't say anything about this working time." ”

Zheng Heming smiled, "It's all a trivial matter, our work is at home or in the office, or on a business trip, as long as we have a pen and paper, we can work anywhere, right?"

"That's really, the part-time matter will be troublesome to Mr. Zheng, how do you need me to cooperate with you to notify me directly."

After the two talked about the details of the work, they were ready to start today's official task, Zheng Heming collected no less than 1,000 children, of which most were boys, and only one-fifth were girls, because most of the abducted children were boys.

Xu Zheng first chose caries materials, a total of more than 130 children's growth photos, of which there are only more than 20 girls, he thought about it, or study the girl's situation first.

According to science, caries of primary teeth can lead to a smaller mesiodistal diameter or even premature loss of the tooth, which will force the back teeth to squeeze forward, so that the new erupted permanent teeth will not have enough growth space to erupt in the normal position, further causing malocclusion.

This will cause asymmetry in the development of the child's bilateral face for a long time, which will affect the bite and facial aesthetics.

Common crowded teeth, overhead, buckteeth, etc. are also caused by this.

In addition, it will also affect the size of the face, on the whole, although most of the caries of baby teeth will affect the part below the nose, but the face is a whole, and the whole person's face will slowly change over time.

That's what we usually say, this kid is crooked.

Xu Zheng forgot the time as soon as he worked, and every time he saw a photo of a little girl, he used a pencil to draw a picture of the little girl from the beginning of the tooth replacement period to the age of ten, according to her age, every year to draw a picture of the little girl without baby teeth and caries, and finally compared it with her real appearance.

This approach of only considering caries in baby teeth is indeed incomplete, but it can only be done first at the moment.

After studying more than 20 photos of little girls, he spent another afternoon looking at the photos of the little boys, and after reading them, he did gain something, but not much.

Maybe there are not enough materials, maybe there are too many factors affecting the child's appearance, but later, he took out a photo of Jiang Lanxin's ex-husband and wanted to draw a sketch of their daughter Yan Mo when she was twelve years old, but he felt that he couldn't start.

Confused, confused, and clueless, at this moment, Xu Zheng felt that his head was about to explode.

"How about it, let's get here here today, and how about the rest of the things when you go to work after you get married?" Of course, Zheng Heming couldn't accompany Xu Zheng here all the time to read the information, which he had studied many times before.

Xu Zheng rubbed his face vigorously with his hands, stood up and moved his body, and looked at the studio, "Teacher Zheng, I want to strike while the iron is hot, tomorrow I will officially have a wedding holiday, I want to work overtime with you tonight, how about it?" ”

Seeing Zheng Heming's hesitation, Xu Zheng immediately said: "Don't worry, my young body can hold up, by the way, I'll call Lao Qi back again and let him accompany me, now you can rest assured, right?" ”

"Haha, I'm not worried about the safety of the studio, it's just that you will hurt your body if you stay up late like this..."

Xu Zheng wanted to pass on the six-character mantra breathing method given by the system to him, thinking to himself, if it weren't for this foundation, who would be able to stay up for a week in a row.

After getting off work in the afternoon, Xu Zheng and Qi Guangyuan went to the small canteen of the provincial hall to eat, and the guest was Bi Shangxue from the provincial abduction office, and when Xu Zheng called him, he happened to be there, no, the three of them went straight to the small canteen.

Said to be a small canteen, no worse than the cafeteria outside, worthy of the provincial hall, the food here is much stronger than the city bureau, Xu Zheng was really hungry, first ate two bowls of rice, and then talked about business, he first told Bi Shangxue what he and Qi Guangyuan were going to do.

Then he said: "I'm going to work overtime tonight to study this topic, but at the moment I only have the information of two abducted children, and there should be a lot of children that you haven't found at the provincial abduction office, can you send me a copy of the photos and basic information of these children when they were young."

I'm going to try to draw a picture of what they will look like when they grow up, and if they succeed, it means that this topic is worth studying. ”

Bi Shangxue was originally drinking duck soup, and when he heard Xu Zheng talk about the topic just now, he felt unreliable, because Zheng Heming was researching this topic, and he knew it as soon as he entered the provincial abduction office.

After all, the Provincial Anti-Trafficking Office wants to take photos of children's growth, and these have to be handed over to Zheng Heming's studio, and he also knows that Zheng Heming has studied for five years without results.

"Zheng'er, are you too anxious, let's not talk about how many years Master Zheng has been studying this subject, let's just say that Dean Lin of Lu Province, after retirement, made a big wish to draw 100 abducted children, but how many years has he been retired now, and the police have only found a dozen children according to the simulated portraits he drawn."

Regarding Bi Shangxue's matter, Xu Zheng also knows that the simulated portrait is helpful for the police to find the missing child, but it is not big, and it is slightly inferior to DNA testing.

But now, since Xu Zheng has chosen to study this topic, these difficulties of Bi Shangxue's theory cannot scare him away.

Seeing Xu Zheng's expression, Bi Shangxue sighed in his heart, this kid is still so stubborn, but he thought about it again, the case of Song Meimei's son lost last year, if it wasn't for Xu Zheng's stubbornness, how could he have found it?

"Yes, since you want to try it, I'll go back to the office after eating, apply to Director Ye, and send it to you."

Xu Zheng patted Bi Shangxue on the shoulder, "Brother Bi, believe it or not, when you go back to sleep and come to work tomorrow morning, my brother will give you a few credits directly, do you want it or not?" ”