Yang Yan learned Luoluo's tone and learned a little bit similar, but his voice and his pretended playful look were really inconsistent!

"Hahaha, you are poisonous! Don't learn to speak..." Xia Yu looked at Yang Yan, laughing so hard that he leaned back and forth, unable to stand steadily, and finally squatted down.

Yang Yan couldn't help laughing. He hugged Luo Luo with a smile, and squatted on the carpet in the living room with Xia Yu, looking at each other like playing house.

Luo Luo was still dizzy, her little head was tilted, her little body was soft, half lying in her father's strong arms, and she seemed to be unable to move.

She didn't listen to what her father and mother were saying, but she felt dizzy. Dad, mother's laughter was sometimes far away, sometimes coming and going...

This feeling is wonderful!

Luo fell into his father's arms, smirked "hehe" for a while before gradually recovering.

"Okay? You'll faint. You know it's scary, right? You can't turn around any longer. Dad can't always..." Yang Yan smiled, talking to Luo Luo who had just stood up.

However, Luoluo seemed to be still feeling a little unfulfilled. She looked at her father with a smile, but her little hand pushed out and tried hard to squeeze out from her father's arms.

"Hehe!" She stood in the middle of the carpet, first looking at her father with a sweet smile, then she took a small step and started to turn around again!

The little girl didn't know how to spin wildly with one foot, so she ran out of circles clumsyly, as if she was invisible in the middle!

Moreover, as she turned, she made intermittent laughter and breathing sounds.

So fun!

"This little girl is still addicted to playing?" Yang Yan looked at Luo Luo with laughter and cry, and said to Xia Yu on the side.

"Wait a minute, how can I remember, I can't just turn around the circle?" After Xia Yu smiled, his mind became clear. She remembered that a colleague brought a child to the unit before. An active male policeman was holding a little boy and turning around the circle. Then everyone blamed him, "It seems that the child's brain development is not complete, so it is not good to turn like this..."

Xia Yu was only half aware of it, but the conclusion she said was correct. If you use too much force, you will have a bad impact on the child's health!

The reason is that babies have heavier heads and account for a larger proportion of their bodies than adults. Moreover, their heads have a lot of water content, their myelin is not mature, and their neck support is relatively fragile. When they are shaken, their brains are prone to compression and distortion...

In short, it is okay to gently shake a baby when you pick it up, but it is best not to do such violent shaking actions that are dangerous!

It was a bit far-reaching. No matter what the scientific basis is, no matter whether Xia Yu said it accurately or not, Yang Yan still believed her suggestions, and he also felt that it was inappropriate to let Luo Luo go around in circles!

However, there is no need to wait for Yang Yan and Xia Yu to stop Luoluo from circling around, the little girl herself fainted first!

"Gaga..." Luoluo smiled excitedly, but after she stopped her steps, her movements became strange. She saw her slanted and stumbled in one direction.

Fortunately, Yang Yan quickly looked and had quick hands, and he held Luo Luo's small waist from behind and pulled her back.

"Hehe..." The little girl fell softly on her father's arm like noodles. Her little butt was affected by her posture and arched, and then she hummed and smiled weakly.

"You can't turn around! I heard my mother say no, it's very dangerous for you to do this!" Yang Yan picked up the little girl with a funny look and gently rubbed her fleshy little face.

Luo Luo looked at her father with crescent-like eyes, not knowing whether she listened or was still in a dizzy state.

...

After coaxing Luoluo to bed, Yang Yan still had something to discuss with Xia Yu.

"I solved the child trafficking case before, and our Shaping Street sent all the files without retaining them?" Yang Yan asked Xia Yu.

He is now a consultant to Shaping Street Police Station and claims to be a member of the police station, so this title has begun to appear a little different.

"What does the file mean? What file do you want?" Xia Yu was a little confused when he heard Yang Yan's words.

"It's the files of those abducted and trafficked children." Yang Yan didn't intend to hide it from Xia Yu, and directly told his plan. "I am now building a 'intelligent identification' system to improve the difficulty of abducted children going home!"

"Didn't you say before that there are many abducted children. Even after they are rescued, it is still difficult for them to find their parents? I read some news reports and said that the main reason is that these children are young, and some are even taken away when they are babies. They cannot express to the police where their home is and what their parents' names are." Yang Yan said.

"Well, do you have a way?" Xia Yu looked at Yang Yan with her bright eyes, and a hint of surprise appeared on her face.

"The best and most accurate solution is paternity test. I checked the information and it seems that this method has been gradually promoted. But this paternity test is not easy to do. There are so many abducted children and so many abducted families across the country, the cost of blood tests is too high." Yang Yan told Xia Yu.

"My idea is photo comparison method! Or facial recognition." Yang Yan smiled, "It's similar to those in American blockbusters that can identify criminals or agents through surveillance videos, but we are not that high-end. We just want to create a person who can identify whether the faces in the two photos are consistent or have a relatively high similarity!"

"If we can do it, we only need to enter the face photos of the child we rescued in the database, and compare it with the thousands of photos provided by the family that reported the case. As long as the database shared by our police has it, we can find the child's family! Even if it is not 100% accurate, we can provide information to families with higher acquaintances based on similarity and let them come to claim the child." Yang Yan talked to Xia Yu incessantly.

This idea is really good, but Yang Yan has never thought about it himself, and it is not easy to implement it!

After all, he is just a programmer. If he wants to design perfect analysis and comparison programs, he also needs to have knowledge reserves such as biology, genetics, or human facial growth!

Otherwise, he had no idea to let the computer analyze the parts of the face that would not change, or how to calculate the changes that the face might have over time.

To do this big topic well, Yang Yan may need a team to study with experts in the field of biology, anthropology and other fields.

But this seems a bit difficult...

He doesn't have that much time and doesn't have so much money to invite others to start a research topic with him!
Chapter completed!