The house built by Baike for his parents is not only not worse than the Japanese benzene house, but also more convenient, beautiful and practical.

Especially when you are heating in winter.

The Japanese benzene room is generally heated by itself.

Not to mention polluting the environment, the temperature is not easy to control.

My parents, my mother, and a dozen or so other residents are all heated by the training center.

In the winter, there are few training activities in the training center.

Only a small number of staff remained.

If it weren't for the fact that there were more than a dozen residents and just heating this small number of workers, it would have been a big loss.

After eating, before leaving, Bai Ke came to his mother's room again.

Touch the heater and ask your mom how she feels.

"Mom, isn't it a little hot?"

"yes, look at the thermometer, it's 25 degrees, I want to wear short sleeves. ”

"If you're afraid of the heat, turn on the air conditioner. ”

"Nervous, turn on the heating and turn on the air conditioner. ”

"Tomorrow I'll let the boiler burn lightly. ”

"Forget it, maybe the people think it's just right. ”

"Well, I'll install a regulating valve for each household next year, and if it's too hot, we'll put less hot steam on our side. ”

"That's okay. ”

"Mom, what are you writing about?"

Qin Yongmei sighed: "Report to the repair bureau and ...... them"

"Apply for Zhou Mei's DNA test, right?"

"Yes, I don't have any hard evidence, but ......"

"If you make a mistake, it will not only ruin Zhou Mei's reputation, but also affect your own reputation, and even Zhou Mei may retaliate......"

"Mom is not afraid of this, as long as she can solve the case, personal honor and disgrace are nothing. Mom just sympathized with Zhou Mei. If the killer is indeed her illegitimate child, and she can kill her relatives in righteousness, this is a great improvement in her human dignity. It can also make her relieved of yesterday's humiliation. But what if we're mistaken? All that's left is to rub salt into the wound. ”

"Since you have concerns, let them go. ”

"But can the crime be let go? What if the murderer commits the crime again during the period when we are lax? We can't afford to take this responsibility!"

"I feel that this criminal also has a criminal pattern. ”

"Yes, in these three cases, the victims were all girls in red. Two or three years apart. The time of the crime was in the summer. But what if there are exceptions?"

In the last life, Bai Ke mastered seven serial homicides.

The fact that the victim was a girl in red has become eclectic after the killer killed three or four people.

Nothing else has changed.

Commit a crime once every two or three years, and commit it in the summer.

But Mom is right, what if there are exceptions?

Bai Ke thought for a moment: "It just so happens that Sun Yuan is back......"

"Sun Yuan has mastered new technology again, right?"

"Yes, she can detect the Y chromosome now, but it's in the experimental stage, and it's not stable enough. ”

"That's what you said about the three generations of Cha?"

"yes, you have a pretty good memory. ”

Qin Yongmei thought for a moment and shook her head: "I don't feel good." ”

"Why not?"

"I remember you said that the Y chromosome was on your father's side. But now we have determined that the surname Cong is the murderer's father, but the surname Cong is dead, and his other children have nothing to do with the murderer, and they don't know the murderer's existence at all. What's the use of checking the three generations?"

Bai Ke suddenly woke up: "Yes, how did I forget this stubble, what we urgently need to find now is the connection between the murderer and his mother......"

"I remember you saying that there wasn't a special one to check on my mother's side?

"Mom, you're amazing! That's called mitochondria!"

Qin Yongmei's cultural level is not high, but her memory is still amazing.

"Hey, no, how do I remember you said, that Y is a male but not a female, and that thread is a female but not a male. This murderer is obviously a man. Still can't do it!"

Bai Ke smiled: "This transmission of women and not men is actually inaccurate, to be precise, it should be women and men are not transmitted." ”

"What do you mean?"

"To use an analogy, let's take Zhou Mei's family as an example. Zhou Mei's family has three brothers and sisters. Brother Zhou Tong, sister Zhou Yang, sister Zhou Mei. Their mother would pass on the mitochondria to her three children, including Zhou Tong. ”

"Understood, males can also be inherited. ”

"yes. But Zhou Tong is a man, and he can't pass on the old lady's mitochondria to his children. Sisters Zhou Yang and Zhou Mei can pass on their mitochondria to their offspring, whether they are sons or daughters. ”

"Understood, it is equivalent to saying that if the murderer is indeed Zhou Mei's illegitimate son, his mitochondria are consistent with the mitochondria of Zhou Yang's daughter. ”

"Yes, there will be overlap. ”

"Great! It just so happened that Zhou Yang's daughter was taking the high school entrance examination this year, and we sent a letter to the school to let them take the whole class for a physical examination before the Spring Festival. ”

"But the inspection cycle is a bit long......"

"How long?"

"It's time for spring. ”

Qin Yongmei sighed: "I hope this criminal does have a pattern." ”

********************

In the microcomputer room of the county public security bureau, Zhou Yang sat in front of the computer and operated.

Tap the keyboard quickly for a while, then slow down slightly and look left and right out of the corner of your eye.

When you're sure no one is looking at him, grab the mouse and click a few times.

A girl's identity is revealed, and he looks carefully at the girl's photo.

Finally, he shook his head and turned it off, opened another one and looked at it carefully.

I read the information of more than a dozen girls in a row, until someone in the seat not far away got up and was about to come over.

Zhou Yang closed the window and continued to type on the keyboard.

***********************

In front of the window of the South Street audio-visual store, Zhou Yang was wearing a backpack and headphones in front of the window looking at the tape inside.

Look at it for a while, then turn around and look around for a while, then turn back and look around for a while, then turn around and look around.

Finally sighed and prepared to turn and leave.

Suddenly, a pleasant voice came from behind him: "Boss, that tape is Xia Lin's plate, "Easily Injured Woman". ”

The boss took the tape down and handed it out.

Zhou Yang turned around and peeked, and sure enough, it was the girl wearing a red sweater that day.

She wore a pullover turtleneck white sweater today, her small face was puffy, her chin was particularly charming, and she could vaguely see a little butt groove.

She took the tape and paid the money, and was about to leave, when she saw Zhou Yang, she also obviously recognized him, smiled, showed a pair of small tiger teeth, and then put her hand on her shoulders and swung around, turning to leave.

"Hey, that," Zhou Yang couldn't help but say.

The girl stopped, frowning a little in disgust.

"Tape! That ......" Zhou Yang hurriedly took out a recorded tape from his bag.

Judging by his proficiency, it was obvious that he had already prepared for it.

The girl took it and took a look, her face showing surprise, but she still pretended to be calm: "Which plate?"

Set a small goal first, such as 1 second to remember: Book Keju mobile version reading website: