A moment the doorbell rang, and I went to open it.

Behind a fat uncle stood a girl with a cello on her back.

In the room, Han Dong and I sat together.

Next to the fat uncle was a little girl, and we sat opposite each other.

"Can I tell what I want to know?" I said.

Han Dong smiled and pointed at the fat uncle and said, "This is the huge sea, your uncle." ”

I nodded.

"Jock, who investigated the case, this is the eldest son of my wife Xiaoyue." Han Dong said.

Looking at the girl with the cello, I said, "This is the daughter of the sea?" ”

"This is Wang Shanshui's daughter, Wang Xiaoai. It's also half of my daughter, and she did the murder in H City and B City. Han Dong said.

"Who did she kill? Isn't it a drone? I said.

Fat Dahai took a bite of braised pork and said, "There are no drones, how can that thing be accurate in the air." All the frames are for you to investigate the case and deceive you. ”

"No precision? So what does she rely on to kill? I said.

Wang Xiaoai opened the cello on the side, and inside was a pistol that I had never seen before.

"This Wang Xiaoai is a shooting wizard like his father, who is also my master Wang Shanshui, and I can teach her how to use a gun at the beginning. It's a pity that she was the only one who taught me, and she also taught herself these things. Han Dong said.

"I haven't explained how to kill people in mid-air." I said.

Wang Xiaoai opened the underside of the cello, which was a Weiya.

The sea smiled and said, "Hang down from the top of the building, step on the outer wall and shoot inside the window." After that, I glued the metal frame from the outside from the bag I brought, so that you would think it was a drone committing the crime. After that, as long as you find a stupid person, you can make him thirty-six degrees nine. ”

"It doesn't make sense, killing people on the exterior wall. Why is the ballistic detection three or four hundred meters away? I said.

"This is Xiao Ai's ability." Han Dong said.

Xiao Ai put away the cello and said: "Modern criminal investigation detects the ballistic shooting distance through ballistic simulation, but the measurement of the shooting distance looks at the gunpowder content and wear degree of the residual bullet. To put it bluntly, the primer of the bullet is hit by the firing pin, which causes the gunpowder to burn, producing a large amount of gas, and then the gas pushes the warhead to eject at high speed. The distance at which the unburned gunpowder particles rubbed against the bullet during the ejection process are converted after they have been shot into the object's body. I have more than a dozen ways to change the real distance, and it was originally a homemade weapon. Find a gel and test fire it at a long distance to cause wear marks, and re-cladding the worn bullet with a smaller dose of gunpowder. The power is lethal enough, but there will be a significant deviation in the distance of detection. ”

"I said that Xiao Ai is a talent, a talent who plays with guns." Han Dong said.

I started clapping, thinking, "All this is to hide the thirty-six degrees nine? ”

"Thirty-six degrees nine don't need to hide, thirty-six degrees nine died early." Panghai said.

"Died early?" I said puzzled.

Han Dong shook his head and said, "Thirty-six degrees and nine have died a long time ago, this is another story." The true identity of Thirty-six Degrees Nine is Wang Shanshui, who is also my master. He committed suicide by jumping off a building after taking on the task of shooting the president that year, just to get money and a heart donor to save her daughter Wang Xiaoai. As for the next two murders and jumping off the building, I did it in order to blur my vision. ”

"Did you kill Bron?" I said.

Han Dong smiled and said, "This person is not dead, he has changed his identity in country F." The beach is so beautiful, anyway, it's much easier than the work he did before. ”