After the Qingming Festival, Qin Ying came to Benzhou City to find Fang Nan, a girl.

Go to the police station to check the missing Fang Nan, and you can find Fang Nan's address at once. Qin Ying's heart was very happy, her body was recovering day by day, and the wound was no longer painful, these were all good news, which made her mood extremely cheerful.

Qin Ying was relatively calm, and when he arrived near Fang Nan's house, he saw Fang Nan's parents, and recognized the appearance of the other party, this is a middle-aged couple in their fifties, both working in the unit, the woman is a cashier at the bank, and the man is a driver in the sanitation department.

From the physiognomy, it is not obvious that there is a resemblance to the girls of the Twenty-Seven Nights, the Fang family and his wife are both medium-sized people, the men are not majestic and handsome, and the women are not tall and charming enough, although they are very old, they can also guess from their faces the youthful and beautiful appearance of their youth.

This kind of appearance is really too far from the girls of the Twenty-Seven Nights, and the girls selected by the Nine Ghosts are very beautiful, and it is impossible to choose a girl with a medium appearance to sleep with him.

Qin Ying couldn't see who the Fang family couple looked like, so he had to take their DNA samples, which was not a problem for the agile Qin Ying, as long as he passed by the couple's side, he could do it.

The result of the DNA comparison surprised Qin Ying, because there was no one with the right number with the girls of the Twenty-Seven Nights.

Why is that?

Qin Ying's forehead oozed cold sweat, could it be the family of the other two girls who died in the underworld? If you want to get DNA samples from those two girls, you have to go to hell, which is full of dangers, and it is not easy to get in and out once.

After thinking about it for a long time, Qin Ying still didn't want to give up this clue, so she found Pang Huihui, the woman of the Fang family, and after knocking on the door, Pang Huihui opened the door for Qin Ying, and the door only opened a small gap, Pang Huihui stood in the room and asked, "Who are you looking for?" ”

"Aunt Pang, I have something to do with you." Qin Ying said with a smile on his face.

"I don't know you, you're a salesman, right?" Pang Huihui said very vigilantly.

Qin Ying was speechless, did she look like a salesman? So he said, "Aunt Pang, I want to talk to you about Fang Nan." ”

"Fang Nan?" Pang Huihui paused for a moment, immediately remembered something, and said, "Are you a policeman?" Is there any news of Nan Nan? ”

"There is a little clue, and I can't be sure that I have found Fang Nan." Qin Ying could only speak vaguely. If Yu Qianqian is not too busy with work to come out, it will be much more convenient to take Yu Qianqian with her, the identity of the police is still a very good profession in Huaxia, and most people give the police face.

Pang Huihui thought for a moment and said, "Then come in." When she saw that Qin Ying was a young girl, her vigilance relaxed a lot. Even forgot to check the police officer card, so he put Qin Ying into the house.

After sitting down in the living room, Qin Ying asked, "Aunt Pang, do you have Fang Nan's things at home?" ”

"What's that?"

"It's a close-fitting underwear or a sweater or pants or something."

"Yes, what do you want that thing for?" Pang Huihui asked curiously.

"That's right, those clothes have dander or hair on them, I'll take it back and do a DNA test to see if there is any information about Fang Nan, recently, the state has established a DNA archive, as long as there is archived data in the database, you can find me." Qin Ying looked a lot like a policeman.

"Then you sit, I'll look for it." Pang Huihui walked into the house.

Qin Ying took a look at this home, this is a house that is at least thirty years old, the layout is relatively conservative, the decoration is outdated, many places have traces of repair, it is a two-bedroom and one-living room design, the house that Pang Huihui entered should be where Fang Nan once lived.

Seeing this, Qin Ying couldn't help but shake her head, this place was too strange to her, there was no memory, and it was definitely not Qin Ying's home. She saw a family photo, the young couple on it were the Fang family couple, and the little girl snuggled between the couple was Fang Nan.

Qin Ying looked at Fang Nan in the photo carefully, she felt very familiar, but she couldn't remember where she had seen it, she was taken aback, it seemed that Fang Nan must be someone in the middle of the twenty-seven nights. Since the appearance of the Twenty-Seven Nights has changed since the rebirth, it is not the same as in the past, and it is very difficult to distinguish who is who from the facial features.

After a while, Pang Huihui walked out with a few pieces of underwear and thickened clothes woven from wool. Qin Ying took out a magnifying glass and took a closer look, since these clothes were preserved after washing, there was very little dander and hair on them, and DNA identification alone was not successful, the best thing was blood droplets and flesh and other items, such things rarely existed on clothes, even if there were blood stains, they would be washed by the owner, and samples could not be collected.

After searching for a full hour, Qin Ying finally found more than a dozen hairs in different positions on her body, and she asked Pang Huihui for the combs and toothbrushes and other items used by Fang Nan, but unfortunately these things were thrown away by Pang Huihui when she cleaned up her home due to too much time. Qin Ying said goodbye to Pang Huihui a little disappointed and walked out of the Fang family.

Qin Ying still settled down in the suburbs of Honshu City, cultivated the collected hair of Fang Nan in warm water, and then observed it with a microscope, and selected a restriction endonuclease paired with the probe to cut it at the position of the long DNA, so that the long strands of DNA with a large molecular weight were cut into many small fragments of different lengths.

In the gel electrophoresis instrument with a long plate size, the DN** segment after enzymatic digestion is electrophoresis, and each enzyme fragment will be separated in the electric field according to its length. The separated double-stranded DN** segments in the gel plate are denatured into single-stranded fragments with an alkaline solution, and then the gel plate is sandwiched in a nylon membrane to make these single-stranded DN** segments imprinted, transferred, and permanently fixed on the nylon membrane.

Molecular hybridization of the radioactive DN** segment with the single-stranded DN** segment on the nylon membrane is permitted. When the radioactive film is stacked on top of the nylon film, the radioactive probe on the nylon film will emit X-rays to expose the film, so that the DN** segments with different lengths of the hybridized probes will be developed on the film. Such a strip of characteristic DN** segments is called a DNA fingerprint.

Because DNA has an unrepeating personality, at most it is found that the ribonucleic acid data in close relatives is relatively close, so it is an important basis for paternity testing and family genetic inheritance in medicine.

After Qin Ying compared the DNA data, he was surprised to find that it was completely consistent with Qin Ao's data.

In other words, Qin Ao is Fang Nan, but why is Fang Nan's DNA data not close to his mother Pang Huihui and father Fang Neng at all? Qin Ying was a little confused, there must be something wrong with this.

She was not busy telling Qin Ao about the results, but made a phone call to Leng Xiao's mobile phone, explained her findings, and said, "Mom, I'm confused, why is Pang Huihui's DNA different from Qin Ao?" ”

"You are really a fool, which shows that Qin Ao is not Pang Huihui's biological daughter." Leng Xiao guessed the truth at once across the phone.

Qin Ying was a little stunned and said, "So, Mom, do I need to explain this to Qin Ao?" ”

"Of course you need, didn't you say that Fang Nan has lived with Pang Huihui for a long time? Maybe Qin Ao was adopted by Pang Huihui since childhood, maybe Qin Ao was an abandoned baby and was adopted by Pang Huihui, you only need to ask Pang Huihui about these questions, Qin Ao definitely doesn't know her origin, you continue to help her find her biological parents, Qin Ying, you are doing a good job. ”

It turned out to be like this, Qin Ying knocked her head hard, she is really stupid, society is complicated, there are many family members who are not from the same bloodline, there are many reasons for this, and there are many family members who are from several different families, people may not care about these when they are alive, once they die, the origin of family members will be annihilated with the death of people.

With questions, Qin Ying found Pang Huihui again, and she said to Pang Huihui: "Fang Nan has found it, but I still have a question, that is, Fang Nan is not your biological daughter, what is the reason for this?" ”

"What? Did you really find Nan Nan? Is she okay? Pang Huihui, who was excited, grabbed Qin Ying's arm tightly and looked at her very nervously, after hearing the words "not her biological daughter". Pang Huihui let go of her hands.

Covering his face, he shook his head and said, "I don't know, I don't know anything, don't ask me." ”

Qin Ying's heart sank, it seemed that Qin Ao's background had a lot of problems, and Pang Huihui's expression was clearly guilty and fearful. If it was Qin Ao who was adopted normally, Pang Huihui would not have a sense of fear.

Looking at Pang Huihui, Qin Ying's mood was very complicated, she still held back her anger and said: "Aunt Pang, don't be afraid, even if Fang Nan is not your biological daughter, she was raised by you after all, Fang Nan will definitely be grateful to you for this." ”

"No, I don't want her anymore, she's not my daughter, no." Pang Huihui shouted at Qin Ying loudly, and in order to increase her strength, Pang Huihui also waved her arms to drive Qin Ying away.

If the person in front of him was not Qin Ao's adoptive mother, Qin Ying really wanted to cast a spell on her, thinking of Qin Ao's violent temper, Qin Ying still dispelled the idea of using a spell. Since Pang Huihui denied it, it was better to let Qin Ao solve it by himself, and Qin Ying just cooperated.

Qin Ying sighed deeply and said to Pang Huihui: "Whether you admit it or not, Fang Nan lives in this family, Aunt Pang, let me tell you, in fact, Fang Nan is still more reasonable, even if you get Fang Nan by illegal means, she will also think of your nurturing grace for so many years, it is not easy to raise a child, she is definitely not the kind of person who will take revenge, but you must confess to her what secrets there are here, otherwise, even I will not be able to help you." ”