Through the related query of the household registration database, Song Lang discovered that He Jingjing's former name was Li Jingjing, Li Jingjing's father was Li Qiang, and Li Qiang lived in Long'an.
Lin Qiupu said: "Captain, isn't He Jingjing's illegitimate daughter? Why is there a father?"
"It may be that her mother married Li Qiang. In this case, Li Qiang is her adoptive father. There is another possibility that Li Qiang is the biological father..."
"He Taiyang is the foster father?"
"That should be called godfather, when He Jingjing came to look for him, he was already an adult."
"Why does He Taiyang adopt her?"
"What do you think."
"Well, I can't think of it."
"He Jingjing did not live in He Taiyang's house as a daughter at all, but the little third he raised. This is not a glorious thing. He said to the outside that he was his illegitimate daughter. I suspect that Mrs. He discovered it very early, after all. It’s hard to keep secrets, so she has a very poor relationship with He Jingjing. He Jingjing and He Taiyang are more than 30 years old, and most of them are not true love. So He Jingjing and the young and strong He Jun are getting better. Judging from He Jun’s reaction, he doesn’t know. He Jingjing is He Taiyang's junior, so why Taiyang is angry with him, but a father doesn't want his daughter to be with someone who has been in jail."
Lin Qiupu admired that Song Lang could infer so much content at once.
"Of course, these are just my speculations, and I still need the support of evidence... Xiaolin, I will set you up for tomorrow's task, you go to He Jingjing, go alone, chat with her casually, the point is that you have to invite her to drink. Then take back the cup she had drunk and send it to Captain Peng within two hours."
"Take her DNA? Captain, can't we directly request the person involved in the case to provide biological information?"
"I don't want to be horrified for the time being. Asking someone for DNA is equivalent to telling TA that the police are suspicious of TA. If He Jingjing is not related to He Taiyang, then she has at least a motive for killing."
"Motivation for the murder?" Lin Qiupu scratched his cheek, the captain's thinking was too fast, and he couldn't keep up.
"Don't think about it, you go home early to rest."
"Okay, Captain." Lin Qiupu was about to leave, remembering one thing, and took out a handful of change from his pocket, "This is the money I just got by taxi."
"You save and buy snacks!"
"No, even if you are the captain, I don't want to owe you." Lin Qiupu said solemnly, and handed over the change and the invoice for the taxi to Song Lang. Then he said goodbye. Song Lang looked at the boy's back and smiled.
Looking at the money in his hand, Song Lang suddenly thought of something and ran to find Peng Sijue.
"Lao Peng, do you have a million in deposit?" Song Lang asked as soon as he entered the door.
"You want to buy a house?" Peng Sijue was cleaning the test bench.
"I suddenly thought of one thing, if the deceased took one million that day, how much would it weigh? Let me look at the photos of the scene, everything."
Song Lang leaned on the chair with his legs crossed, looking at the pictures of the scene one by one. It was already 11 o'clock in the evening. There were only a few police officers on duty in the bureau. Song Lang liked the quiet atmosphere. , As if the whole world is asleep, in this quiet atmosphere, his brain can run at full speed.
"1.15 grams!" Peng Sijue brought a cup of coffee, "I weighed it with an electronic scale. A hundred-dollar bill is 1.15 grams. If it is an old one, it might be lighter."
"Ten thousand yuan is 115 grams, one million is ten kilograms, the weight of a bag of rice."
"The weight of the entire head of an adult male."
"It's a forensic doctor. The examples given are so weird." Song Lang smiled, "I went to find a ten kilogram object."
"It should be more than ten kilograms, don't forget the weight of the box!"
The two went to the evidence room. The police evidence room is a treasure house. They have everything. They found a box with ten kilograms of paper in it. Song Lang handcuffed his wrists and the box. Together, say: "Go for a walk."
"It looks like it's going to rain, just experiment here."
"No, there is no atmosphere here. There is an atmosphere like the night black wind and high genius outside. Please have a supper when the meeting is over."
Peng Sijue sighed and had no choice but to accompany him.
At a weight of ten kilograms, he didn't feel much at first. When Song Lang turned around, he found that it was very heavy. His wrists were handcuffed to the box. He couldn't change his hands, which made his hands a little sore.
It was about half a kilometer from the Taiyang pawn shop to the scene of the crime. After estimated that after this distance, Song Lang put down the box and breathed a sigh of relief. Peng Sijue said, "Really dedicated, your wrists are all red."
Song Lang looked at his wrist, "I have a professional question, will the blood run out of the mouth at the position of the knife in the deceased?"
"There is indeed reverse blood in the deceased's trachea, and some in his mouth."
"But there is no blood on the ground, something is blocking the blood."
Peng Sijue glanced at the box and said, "Box?"
"Yes, the deceased's bending action was actually to put down the box. Why did he put the box down in front of another person, because the other person was the person who came to the transaction. From this point of view, we have misjudged. The murderer does not need to be an acquaintance. The murderer was the target of the deceased’s trade. When the deceased bent over and opened the box, the murderer drew out the knife and stabbed the deceased in the back. The vomited blood of the deceased was vomited in the box, and then the murderer took the box."
"The ground is very muddy, there will be traces if you let the box go."
"The deceased crawled on that piece of ground and wiped off the indentation. Of course, if you look closely, there is actually a slight indentation." Song Lang took out a photo of the scene, and a small square indentation was vaguely visible on it. .
After reading it, Peng Sijue was convinced, "This means that you have more subjects to investigate?"
"This is a good thing. The identity of the murderer has become clearer. As long as you find out who the deceased went to see that night, you are not far from the truth... But what is this million for... Life-saving money? It can't be life-saving money. … The money to pay the old man’s gift? That’s not right… Why did He Jingjing throw out that legend? Does she have other intentions… ”
Song Lang thought, and walked away alone with his hands behind his back. Peng Sijue said, "Hey, take the box back!"
Song Lang was completely immersed in his own reasoning and turned a deaf ear to Peng Sijue's words. As he walked farther and farther, Peng Sijue sighed helplessly, and could only bring the box back to the Public Security Bureau by himself.
Peng Sijue returned to his laboratory, made a pot of coffee, turned on the music, picked up a book and read it. There was a light rain outside the window. Song Lang suddenly ran back. The windbreaker and hair were all wet. He said, "I Damn, I actually walked into a park, and you haven't come home yet!"
"Waiting for you, didn't you say to have supper together?"
"Sorry, sorry, I think the question is too crazy..." Song Lang picked up the coffee on the table and drank, "It's really bitter, no sugar."
"Sugar can make people tired, and it can cause tooth decay. I never eat sugar."
"You said how tired you are." Song Lang took out his cigarette.
"A self-disciplined life will give you a lot of benefits." Peng Sijue reached out and grabbed the cigarette in his hand and threw it out the window. "Don't smoke in the laboratory!"