When Mom and Dad were waiting for the door to open, Luoluo's attention was still on their "magic snap fingers"!

Why isn't there a sound? Why can't you do magic like your father?

I saw the little girl's short and thin two little fingers comparing the shape of the "7" after snapping her fingers, and the eyes looking at the fingers were still very focused, but the little mouth was slightly pouting, such a cute and cute little appearance, but it was very cute!

No, hearing the creaking movement of the iron door, the little girl woke up in shock, she raised her head in a daze, but found that there was an old man in front of her who had a Chinese face, but was very thin and had gray sideburns, was looking at her!

The blazing eyes, full of momentum, suddenly frightened Luo Luo back into his little hand, and hugged his father's neck a little nervously, leaving only a pair of black and white, crystal clear big eyes and this energetic old man timidly looked at each other.

"Occupational disease again!" Seeing the frightened look of the little girl in front of him, the old man Dai Guoxun couldn't help but secretly blame himself, and quickly withdrew his sharp eyes.

The old man was surprised that Xia Yu came over just now, not only brought his boyfriend, but also brought a child's question, and his brain, which was used to reasoning, quickly calculated that the time was not quite right......

For Xia Yu, a student, Dai Guoxun still had a deep impression!

Not because he has an unforgettable talent for recognizing people, but because the ratio of men and women in the police academy is as disparity as that of engineering colleges, and Xia Yu is a rare top student, women are not allowed to shave their eyebrows, and she has repeatedly made contributions not long after she entered the society, the old man naturally remembered this proud protégé, and he agreed to Xia Yu and her boyfriend's request to visit.

But when Old Man Dai opened the door, he didn't see the two people he expected!

Between Xia Yu and Yang Yan, there is a little cutie!

The little girl is still very likable, under the light of the corridor, the old man saw her pink little face, her skin is smooth and delicate, and she has a pair of big watery eyes that are unforgettable!

Mr. Dai has no children, and his life has been dedicated to the criminal investigation industry, but when people enter old age, they will inevitably think of the regrets that are missing in their lives.

But occupational diseases still prevailed!

The old man looked at Yang Yan and Xia Yu standing close together, like a family, and he couldn't help but unfold a series of reasoning in his mind.

The baby is about two years old, or more than a year old, counting the ten months of pregnancy...... In other words, Xia Yu walked with people outside the school before she graduated, and then became pregnant and gave birth to a child?

But why does Xia Yu's child still look so slender? It doesn't look like a woman who has given birth.

However, the old man is not very sure of this judgment, after all, everyone's physical condition is different. There are also young people who don't like to eat and drink, and after giving birth, their bodies still remain slim.

The old man's fast-running brain also pondered another question, why did Xia Yu just call this man his boyfriend?

Young people are really too open now......

The old man finally blamed the problem on the change in the concept of some young people in society - children born out of wedlock, which have not been uncommon in Yangcheng or Guangdong Province in recent years, and even caused disputes and death cases.

Of course, no matter what the young people think, Dai Guoxun did not impose his traditional ideas on others, and he saw that Xia Yu and Yang Yan vaguely showed a sense of compatibility, and there was no need to talk more.

Therefore, after retracting the eyes that frightened this cute little girl, the old man shook his head slightly, put aside these irrepressible reasoning thoughts for the time being, and invited Yang Yan and Xia Yu to come in.

"Teacher Dai, Xia Yu said that your family has a rule that you are not allowed to bring things over, and I feel very embarrassed. Xia Yu is not good at saying some polite words, after she introduced herself and the old man, Yang Yan said a few words to the old man Dai.

"What's so embarrassing?" Old Man Dai arranged for Yang Yan and Xia Yu to sit down on the wooden sofa in the living room, Yang Yan said as he hugged Luo Luo and sat down, his eyes secretly looked at the surrounding environment.

The house where Mr. Dai lives is an old house allocated a long time ago, with two bedrooms and one living room, but it has a relatively long balcony. It's not small, it's not big, but at least it's bigger than the house that Yang Yan and Xia Yu live in now.

But the old man's house is really too simple!

There is almost no furniture in the living room, a simple wooden sofa with a long and a short one, plus a matching wooden coffee table, and in addition, there is only an old bookcase against the wall, and nothing else, not even a TV!

The bookcase was full of books, and there was a small black and white photo frame, Yang Yan glanced at it and didn't see the appearance of the person in the frame, but it was confirmed that it was a black and white photo, and that the photo was a young woman.

It can be seen that this bookcase should be filled with the old man's spiritual food, as well as his spiritual support......

Although Yang Yan already had a little premonition before coming up, he still didn't expect that Teacher Dai was still such a diligent and thrifty person!

Thinking that he was still working on the front line of criminal investigation after retirement, Yang Yan couldn't help but be a little awe-inspired.

"Teacher Dai, I'll come!" Xia Yu's voice brought Yang Yan's thoughts back to reality, and he saw that Old Man Dai Guoxun was busy pouring water for them.

"Sit, sit down, come to the teacher, you are guests!" Dai Guoxun smiled and waved his hand.

Although he has gray sideburns and a thin physique, his body is still relatively tough, and between his gestures, there is the majesty and neatness of an old criminal policeman who has accumulated over the years.

Whether it is Teacher Dai, Yang Yan or Xia Yu, they are actually not people who like to talk about things, but after sitting down and greeting a few words, they quickly got to the point.

"Before, Xiao Xia told me, Xiao Yang, what are you doing to prevent being trafficked?" Dai Guoxun sat on the sofa, his waist was also straight!

Yang Yan was very embarrassed to see this, and he quietly straightened his collapsed waist, but where did he get used to it? After a while, he felt soreness again, and he couldn't support it, so he could only secretly move his buttocks, and then introduced to Dai Guoxun the "intelligent human recognition" system he wanted to do.

After listening patiently to Yang Yan's gushing introduction, Old Man Dai bowed his head slightly and said: "Xiao Yang, your idea is good, but the function of this camera to recognize faces is not a new technology, right? I remember that there was this project a few years ago, but it was only installed for entry and exit monitoring, and it has not yet been popularized in the police field. ”

Yang Yan is not behind closed doors, he knows the current development and application of face recognition technology, after hearing the old man's question, he was full of energy, and told the old man about the special features of his "intelligent people" system, and how he wants to apply it to the field of abduction and family search.

"At present, the face recognition system is still very simple, just a simple coordinate data comparison, and the requirements for cameras and machines are relatively high, and scanning equipment needs to be pre-installed in advance......"