If Liu Jing hadn't killed Du Juan and He Shuangxi, but he knew the names of Tao Qiangsheng and Tao Lixin, he couldn't explain it.

If it was true that he killed these two people, and it was a first-time offender, but within a few days after killing Du Juan, he would be able to deal with the police investigation very naturally, which can only show that Liu Jing is extremely talented in killing people, and his incomparably strong psychological quality is innate.

But this kind of one-in-a-million "martial arts wizard" is really rare, and it is rare to see it for many years.

In addition, the fact that Cuckoo was not the first person Liu Jing killed can also explain this. The psychological quality of criminals, like their modus operandi, often escalates with the increase in the number of crimes and the accumulation of criminal experience.

Yang Feng and Wu Xiaojun pondered for a while, then came back to their senses, and they all agreed that the last one was more likely. Liu Jing, who seems to be "useless" in life, feelings, and career, is very likely to be hidden and outstanding in the matter of murder, and is ahead of his two sisters.

Wang Xing suddenly had a second question: "Even if Liu Jing killed Du Juan, it was not the first time to kill someone, but I only came to him to ask him during the day, and as soon as I walked on the front foot at night, he began to plan to murder He Shuangxi the next day, and also set the murder location in his own home, he had the courage to ...... Isn't that too daring?"

"Besides, the older the rivers and lakes, the less courageous they are. If I were him, I'd have to wait until Cuckoo's disappearance calms down, right?"

Wu Xiaojun immediately put forward a different view:

"You forgot the text message that Liu Jing sent to Coco Du using Du Juan's mobile phone. He said in the text message that Du Juan had eloped with He Shuangxi, which is indeed the best lie to conceal Du Juan's murder, but it also brings a consequence, that is, He Shuangxi must die immediately, and the sooner the better, otherwise as long as Du Wen knows, or sees He Shuangxi still appearing in Shashi, this lie will be self-defeating."

"Therefore, I think it is not that Liu Jing is so bold that he is lawless and unbelievable, but that he was forced to go to Liangshan and had to go out of his way and fight to the death."

"Besides, the safest places are the safest, and the safest times are the most dangerous. In those murder cases that happened next door to the police station, the first two accomplices chose to meet at the door of the public security bureau, and after killing someone, they rented a house next door to the police station, and even set up a stall in front of the police station.

Wang Xing thought about it, and also thought that he might be suspicious at this point.

Yang Feng was noncommittal about this, but he had no intention of continuing to interrogate the three sisters and brothers overnight:

"Let's wait for the physical evidence inquest report to come out, these three sisters and brothers rushed to bear the charges, and the death of the two brothers of the Yuan family is inextricably linked."

"Although there is not much difference in their confessions for killing these two brothers, each of them said that the tools used to commit the crime are different, which should be able to identify which of them is the real murderer from the autopsy."

"With this situation in hand, under the condition of conclusive evidence and comprehensive information, it will be more certain to pry open their mouths."

Wang Xing and Wu Xiaojun did not disagree with this.

Following.

The medical examiner raised the two DNA test reports in Yang's hand:

"As instructed, we went to Liu Jing's house and found two residual blood on the leg of his sofa."

"One of them is in the gap between the wooden legs of the sofa. The blood in this place is not very obvious, it should be that when the murderer was cleaning the crime scene, the water mixed with blood soaked into the wooden tripod of the sofa, and it remained in the wooden cracks. We took down a few feet of the sofa and brought them back to the police station for testing, only to find the blood left in the crack of one of the wooden legs."

"After DNA testing and analysis and comparison with the DNA of Shuangxi's father, it can be determined that this blood belongs to Shuangxi."

After a pause, the forensic doctor added: "He Shuangxi is an only son, and his grandfather and grandmother passed away five years ago, so this blood will not belong to the second person."

Yang Feng nodded, and instead asked, "What about the other bloodstain, which belongs to Liu Jing?"

Unexpectedly, the medical examiner shook his head: "Another blood stain is on the wooden frame at the bottom of the sofa, which is more obvious, but it is difficult to find if you don't turn the sofa over. DNA Comparison ...... This bloodstain does not belong to He Shuangxi, nor does it belong to Liu Jing."

Yang Feng's eyelids jumped suddenly: "Is that Liu Yuanyuan, or Liu Zhaodi?"

If this is the case, then the previous analysis and speculation will have to be reversed.

The medical examiner again gave an unexpected answer: "None of them are ......"

"Gotcha! Lao Qin, don't sell it, just say the answer."

Lao Qin stuffed the two reports directly into Yang Feng's hands: "You can see for yourself...... It's not that I want to sell Guanzi, but we can't be sure who the blood in this place belongs to, so we can only go to Liu Jing's house to continue to collect samples and conduct DNA comparison."

Yang Feng flipped through a DNA test report in his hand, and after taking a closer look, his face was full of disbelief: "Parent-child relationship? Another place of blood belongs to Liu Jing's child? This is impossible, Liu Jing's children are 5 years old and 7 years old, no matter who they are, they can't be the murderers of He Shuangxi."

Lao Qin glanced at him very dissatisfied: "What are you excited about...... Who said that the one who left this bloodstain must be the murderer? It's not uncommon for children to jump up and down at home all day long, touching each other, putting their hands under the sofa, accidentally scratching the skin, and leaving blood stains on the wooden frame at the bottom of the sofa."

After a pause, he added: "Besides, the DNA test report only says that there is a 'father-son relationship' between the owner of this bloodstain and Liu Jing, but it doesn't say that it must belong to Liu Jing's child, right?"

Yang Feng immediately listened attentively: "Old Qin, you go on."

"When I said that He Shuangxi was an only child, I deliberately emphasized: 'His grandfather and grandmother passed away five years ago, right?' This is because DNA can only prove the existence of a 'paternity', but it cannot tell who is the father and who is the son."

"The DNA sample compared with the bloodstain found in the crack of the wooden foot came from Ho Shuangxi's father, and the test and comparison proved that there was a 'father-son relationship' between the two, but if the bloodstain was left by Ho's grandfather and grandmother, this result would have been reached. Got it?"

Yang Feng and the others immediately nodded like chickens pecking rice.

"Therefore, this bloodstain on the wooden frame at the bottom of the sofa may belong to Liu Jing's child, or it may belong to Liu Jing's mother." ap.

"If Liu Jing's wife Du Juan is alive, she can take a DNA sample directly from her, and after comparison, if there is also a parent-child relationship between the two, it can be determined that this bloodstain is left by Liu Jing's child, if it doesn't match at all, then there is no doubt that it belongs to the old lady of the Liu family."

"But the cuckoo is gone, so I can only go to Liu Jing's house to collect DNA samples from his old lady and two children, and compare them with this bloodstain one by one."

Yang Feng suddenly thought of another possibility, and suddenly felt his scalp tingle: "Old Qin, the bloodstains on the wooden frame at the bottom of the sofa and He Shuangxi's bloodstains in the cracks of the wooden feet, can you be sure that they were left on the same day?"

"I know what you mean. If this bloodstain is determined to have been left by the old lady of the Liu family, and it is consistent with the time when He Shuangxi left the bloodstain, then the old lady is suspected of committing a crime."

"Our people sawed off the sofa tripod and carefully tested it, but they could only determine that it was about the same time as He Shuangxi's bloodstains, and they couldn't confirm whether they were left on the same day."

This conclusion is enough to classify the old lady of the Liu family as a suspect in the murder of He Shuangxi.

The old lady witnessed the reluctance of He Shuangxi and Du Juan, and spoiled Liu Jing, so there was no problem in the motive for the crime.

The Liu family, a family of four, took out one at random, and they all had sufficient motives to commit the crime, which is still a hell of a life.

But just an old lady, an old woman in her seventies and eighties, can kill He Shuangxi? If she and Liu Jing committed the crime together to kill He Shuangxi, it is possible, and then the old lady will call Liu Zhao afterwards

Di disposes of the corpse, and Liu Zhaodi should not ignore it.

Judging from the information obtained from various investigations, although Liu Zhaodi does not want to see her younger brother, she has no dissatisfaction with her mother.

It stands to reason that a loving mother has many defeated children, and anyone with a discerning eye can see that Liu Jing's behavior of "gnawing at the old and gnawing on the sister" is inseparable from the old lady's pampering, spoiling, and preference for Liu Jing from childhood to adulthood.

Since Liu Zhaodi doesn't want to see her younger brother, she should have some complaints about her mother. But she "hates the standard and doesn't hate Ben", she only hates her brother for being "useless", but she doesn't blame the old lady for "spoiling" him. That's really rare.

Looking at the DNA test report in his hand, a question suddenly popped up in Yang Feng's mind:

In the confessions of the three siblings of the Liu family, there is no concealment or distortion of the fact that He Shuangxi was killed with a cane at Liu Jing's house, because they, or some of them, know that even if the blood stains at the scene of the crime have been cleaned, the wooden tripod on which the water mixed with blood soaked into the sofa has been soaked in water, and even in the past three years, the police have been able to extract the blood through technical means.

Therefore, these three siblings did not dare to hide or distort this.

There is no doubt that among the three sisters and brothers, the one most likely to know this is Liu Yuanyuan, who is a doctor.

The question is, since Liu Yuanyuan knows this, why don't she just ask Liu Jing to replace the sofa, or even replace the floor at home?

Soon, Yang Feng had the answer in his mind, and at the same time, because of this answer, he felt his scalp tingle again, and thought that Lao Qin didn't seem to need to compare and verify who the bloodstains on the wooden frame at the bottom of the sofa belonged to.