[I caught up today... 】

"yes, I'm curious about that."

Hearing the voice, Tang Guo hurriedly turned around and saw that Yang Yibo, the forensic doctor who had just conducted a preliminary examination of the female corpse, was standing behind the two of them, looking at Qin Cang with an interested expression.

Yang Yibo has a kind of heroic appreciation for Qin Cang, this kind of goodwill proximity is still obviously different from Yan Lifu's polite alienation, so Qin Cang is not repulsive to him, let alone resistant, although he is still not very enthusiastic, but he can nod his head without being salty when he sees him.

Now that Yang Yibo asked, Qin Cang didn't go around the bend with him, and stretched out his hand to point at the female corpse: "She told me 'with her own hands'." ”

"Hands?" Tang Guo was very puzzled by Qin Cang's wording, most people said that they had observed something from the corpse, so they would say that the deceased had provided information "personally", but I really hadn't seen anyone say that the deceased had told him "with his own hands", after all, from common sense, the hand is not an organ that can speak and communicate, so it always sounds a little weird.

Qin Cang nodded, stretched out his finger and pointed at the deceased's fleshy and bloody neck, and then pointed to the deceased's hand, the tips of the deceased's fingers were also stained with blood, and after the blood coagulated, the inside of her fingernails was dark red.

"It should not be difficult for you to see that before dying, the deceased, out of the instinct for survival, kept trying to grasp the rope that strangled his neck, because he was so desperate that he scratched his neck." Qin Cang said, after finishing speaking, he deliberately paused to see Tang Guo and Yang Yibo's reactions.

Yang Yibo nodded first, after all, he is a forensic doctor, and he is much more professional than Qin Cang in terms of autopsy, and the signs that Qin Cang said are very obvious, and they are not different from his judgment from a professional point of view. Tang Guo quickly nodded, although she was a layman in autopsy, but there was still common sense and logic, and it was not difficult to guess the same conclusion just by imagining.

"Take a look at the wounds on the neck of the deceased, except for the back of the neck, almost without exception have been scratched very badly, but on the contrary, the tips of the deceased's fingers are basically stained with the flesh and blood of the wound on his neck, and there is no particularly serious injury itself, not even a piece of his nails." Qin Cang was very satisfied with the reaction of the two people, so he continued, "What does this mean? It is more accurate to say that the rope used by the murderer to strangle the deceased, or it should be called a rope, I am afraid that it should be a very thin, but at the same time strong and resilient thing, such as fishing line or strings, as long as it is tightened, it will be strangled into the flesh, and if you want to use your hands to buckle and break free, it will be easy to scratch yourself. If it is not such a thin rope, but a rope of ordinary size, the deceased will easily pick the edge of the rope, if you pull hard to break free, even if the murderer strangles very hard, the deceased has no way to save himself, the most likely is because he pulled the rope too hard and overturned his nails, and the tips of his fingers will be much more serious than the top of his neck, not the current appearance. ”

Tang Guo nodded, she could understand what Qin Cang said, but why could this show that the murderer was full of hatred for the deceased? She really couldn't see the murderer's motives and emotions from the two possible tools of the crime, the fishing line or the strings.

Qin Cang saw Tang Guo's confusion, and he continued unhurriedly: "Fishing lines or strings, this is only one of the reasons that can cause such a serious scratch on the neck of the deceased, and the other reason is even what I said, hatred!" The murderer's hatred for the deceased. Think about it, if all of a sudden, without any defense, your neck is suddenly strangled by a rope, causing you to be unable to breathe normally, how long can you struggle in such a situation? ”

Tang Guo shook her head, she really couldn't answer such a question, this kind of thing was not specifically covered in the textbooks when she was in school in the past, and now she can still stand here with all her beard and tail and jump around the scene, which obviously means that she has never experienced the experience of being strangled by her neck and mechanical suffocation when she is on the verge of death.

Fortunately, Yang Yibo is a professional, so he will not be asked all of a sudden like Tang Guo, he saw that Tang Guo was very unfamiliar with this question, so he simply patiently told her and Xiao Zhu on the side a few more words: "Like this situation of being strangled by the neck and causing mechanical asphyxia, generally from being strangled to completely losing signs of life, there are generally six steps, the first step is called the pre-asphyxia stage, during which the human body will have breathing disorders, which is the so-called oxygen inhalation disorder, However, because before this, there will be some residual oxygen in the human body, so there are no obvious adverse reactions, how long can this stage last, it depends on the individual quality of the person, if the body is relatively weak, it may be less than 30 seconds has entered the next stage, athletes with large lung capacity can hold on for a long time, two or three minutes is not a problem, ordinary people are usually 30 seconds to a minute. Immediately followed by the second stage - inspiratory dyspnea, the normal metabolism of the human body quickly consumes the oxygen involved in the body, making the lack of oxygen in the body aggravated, under the stimulation of carbon dioxide, the person will breathe deeper and faster, breathing in the form of panting, at this time the heartbeat is faster, blood pressure rises, this process will last about a minute, or a minute and a half of the appearance, and then enter the third stage, which is also the most uncomfortable stage - expiratory dyspnea. At this stage, the carbon dioxide in the human body continues to increase, the breathing intensifies, and the exhalation is stronger than the inhalation, and the person will have facial bruising and swelling, carotid artery distention, showing the most typical suffocation characteristics, and loss of consciousness, muscle spasms, and even incontinence and other reactions. This phase lasts from a few seconds to tens of seconds, usually no more than a minute. Therefore, according to Qin Cang's question, that is, about the first three stages that can still struggle before suffocation and death, ordinary people, for a total of two to three minutes, basically lose the ability to resist. ”

"That's right," Qin Cang nodded, there was naturally no objection to the professional knowledge provided by professionals, and he continued to talk about his analysis and judgment, "Let's just think that this deceased is one of the ordinary people, his body is not too weak, but he is not as strong as professionals, so from being strangled by his neck at the beginning to basically losing the ability to resist, there is a time of two to three minutes in between, and in these two or three minutes, at the beginning of the first stage, people will try to break free, But not to the crazy struggle, because not completely lost the mind, even if it is struggling, the sense of self-protection still prevails. It is only in the second stage, that is, in the minute or so, that it is the most uncomfortable, trying to struggle desperately to get out of the predicament, and the desire to survive exceeds the instinct of self-preservation, and the body is still relatively controlled. ”

Tang Guo nodded, listening very seriously.

"In the third stage, there will be all kinds of reactions cited by Yang Yibo, and he will lose the ability to resist," Qin Cang raised a slender and good-looking finger, "Therefore, the time that this deceased can struggle desperately will definitely not exceed a minute, but you look at the deep and shallow scars on her neck, the number of scars, and the large distribution area, does this seem to be able to be caused in less than a minute?" In my opinion, this should be a scar that has been formed many times, that is, the murderer strangled the neck of the deceased and made her suffocate and uncomfortable, but when she just entered the third stage, the murderer would give her a little respite, and then tighten it again, so that she would go back and forth between the first stage and the third stage, so she would repeatedly try to pull the rope that was enough to sink into the flesh and there was no way to break free, desperately trying to struggle, but in the end it was still in vain. Going through these three stages of suffocation over and over again is definitely not a good experience, the deceased obviously suffered more than the person who was strangled to death, and if it weren't for the fact that the murderer harbored some deep hatred for the deceased, I am afraid there would be no need to go to such great lengths and risk such a mistake. ”

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