Yi Qing came out of the interrogation room, and Xiao Wei also came out.

Yi Qing took the bloodstain identification conclusion from Fei Long's hand and was about to return to the house when Xiao Wei stopped him.

"Captain Yi, I don't think I'm in a hurry to go back now. Since the interrogation is not going well, it is not at this time, so smoke a cigarette and relax. ”

Yi Qing nodded and came to the courtyard in front with Xiao Wei, at this moment the rain had stopped, and the air after the rain was exceptionally fresh.

Xiao Wei took out a cigarette and handed it to Yi Qing, and lit one himself, the two lit cigarette butts were like two red dots in the dark night.

Xiao Wei asked, "Brother Yi, what are you going to ask this Song Qinglin next?"

Yi Qing exhaled a puff of smoke from his mouth and said, "This guy seems to be fully mentally prepared and knows what we want to ask." ”

Xiao Wei replied: "Brother Yi, this Song Qinglin is indeed a difficult bone to gnaw. The main reason is that we have too little evidence in our hands, which is why this guy seems so fearless. ”

Yi Qing said: "Yes. All we have is this bloodstain identification report, and it can only say that there is human blood in it, but we can't say whose blood it is. ”

Speaking of this, Yi Qing suddenly remembered something, and said to Xiao Wei: "Call Fei Long to me." ”

Fei Long soon came to Yi Qing, and Yi Qing asked, "You said that there are human blood components in this blood stain, and it is evenly distributed, can you find a way to prove whose blood it is?"

Fei Long replied: "I'm afraid this is not possible at the moment. The only thing you have to do is to do a DNA test. At present, our regional public security department and provincial department are unable to do it, and the Ministry of Public Security is still in the exploratory stage and has not carried out this business appraisal. ”

At this time, Xiao Wei asked: "Brother Fei, let me interject to ask a question, this person's blood and duck blood are mixed together, and they are still old bloodstains, how can I test whether there is human blood in it?"

Fei Long smiled: "This is actually very simple. Since Xiao Xiao likes to be diligent and inquisitive, then I will popularize this knowledge for you.

There are many differences between human blood and animal blood, and there are many examination items if you go to the laboratory, such as: determination of blood components, determination of elements in blood, blood gas analysis, blood biochemical tests, and blood immunological serological tests. It's a bit too much, a little bit of a professional.

But the biggest difference between them is the antibodies. With a specially customized human blood chromogenic antibody, this substance is sprinkled on the blood, and if it is human blood, the antibody will specifically bind to it and develop color. In this way, it is very easy to see if there is human blood in it. But if you want to know what animal blood, you need a professional instrument to conduct a professional examination. ”

Xiao Wei nodded and said, "I have seen it for a long time, it turns out that there are so many Taos here, and I have to study hard in the future." ”

Xiao Wei and Fei Long were talking here, but Yi Qing was silent on the side, Xiao Wei knew that Yi Qing was still worried about how to break Song Qinglin.

Looking at Yi Qing, Xiao Wei stepped forward and said, "Brother Yi, I have a proposal, you don't think it's okay." ”

Yi Qing raised his head and looked at Xiao Wei and motioned for him to continue.

"We now suspect that Song Qinglin killed Song Hongjun, and it is very likely that the body was mutilated. At present, the evidence we have can only prove that Song Qinglin fed his ducks with minced meat a few days ago, and there is a large area of human blood on the table where Song Qinglin's family usually slaughters ducks, but we can't prove that this blood is Song Hongjun's, isn't it?"

Yi Qing nodded and replied, "That's right." ”

Xiao Wei said: "But Song Qinglin didn't know that we couldn't prove that the blood was not Song Hongjun's, so when I asked him for a while, I specifically asked Song Hongjun about the details, and I took a closer look on the side to judge whether he was lying, where he was lying, do you think it's okay?"

Yi Qing felt that after thinking about it, he felt that there was no better way at present, so he carefully discussed with Xiao Wei and Fei Long and formulated a few questions before returning to the interrogation room.

This time, Xiao Wei did not stand behind Song Qinglin, but moved a chair and sat directly next to Song Qinglin, so that he could clearly observe Song Qinglin's every move.

"Song Qinglin, how are you thinking about it?" Yi Qing began to ask.

"I've thought about it, I've already said what I need to say. Song Qinglin's expression was still very calm.

"That's good. Let me ask you, when was the last time you saw Song Hongjun, and where was it?"

Song Qinglin thought for a while and said: "I saw Song Hongjun at the entrance of the village, he rode out with his father, saying that he was going to see his father, so he said hello and left." It was a morning, I can't remember exactly what day, it was about seven or eight days ago. ”

Yi Qing then asked, "Then when was the last time you saw the Golden Orchid, you can't remember it, right?"

Song Qinglin replied: "I really can't remember the specific date, anyway, it was before Song Hongjun came back this time, and I haven't seen the golden orchid since." ”

Yi Qing then asked, "Where was the last time you saw the golden orchid?"

Song Qinglin scratched his head and said, "I went to the Golden Orchid's house in the middle of the night, and I left before dawn." ”

"Then do you know when Song Hongjun left home?"

"It's been four or five days, I don't know the specific time, but I still heard what Song Hongjun and his father said. ”

"When did that duck dealer Li Jiandong come to your house to collect ducks?"

"This one of you has already asked, and it was July 26 of the lunar calendar. ”

"Okay, then let me ask you, did you see the golden orchid before or after the 26th day of the seventh month of the lunar calendar?"

Song Qinglin didn't answer immediately, but stared at Yi Qing with eyes, as if he was recalling the specific time.

After a pause, Song Qinglin said, "I saw the golden orchid before the ducks were harvested." ”

Yi Qing asked, "Are you sure you saw the golden orchid before July 26?"

"Sure. ”

Yi Qing sneered and said: "Song Qinglin, I don't think you can give up if you don't know the Yellow River, there is a way to tell the truth, but it is difficult to make up lies." We now suspect that you killed Song Hongjun?"

As soon as these words came out, Song Qinglin immediately raised his head and looked at Yi Qing with surprised eyes and replied: "I didn't kill anyone, how can I suspect that I killed Song Hongjun? It's a joke!"

"Joke! Then let me ask you, since you didn't kill Song Hongjun, then explain to me why you feed the ducks with minced meat? There will be a large amount of Song Hongjun's blood on the table where you slaughter ducks?" Yi Qing asked in an aggressive tone.

"This, this can't be, are you mistaken?"

"Mistakenly, don't you know that we went to your house to extract those blood stains? Saying that, Yi Qing slammed the appraisal conclusion on the table: "You don't know, now technology is very advanced." After identification, the bloodstains on your table are Song Hongjun's. ”

Song Qinglin was stunned for a moment, and didn't speak for a long time, just stared straight ahead with wide eyes.

"Okay, think about what I just said, I hope you can get a good attitude. Yi Qing stopped the interrogation just right and winked at Xiao Wei.

The two men walked out of the door of the interrogation room one after the other and came to an office in the front yard.

Yi Qing asked, "How is it?" I don't find anything, I think Song Qinglin is a little unbearable. ”