Of course, there is another longer process of strangulation to strangle oneself, and it is possible that when a person strangles himself, due to insufficient blood supply to the brain, he will become comatose and his muscles will be relaxed and weak. The principle of mechanical asphyxia is that respiratory dysfunction compresses the respiratory tract and causes carbon dioxide to accumulate and stimulate the vagus nerve, causing muscle spasms.

Even if the person loosens the rope after falling unconscious, it does not mean that he will survive. Because the homeostasis in the body has been disrupted, the suicide person may slowly die in this way.

A person who hangs himself and is still alive may die a few days later, so when both of these things happen, the person can strangle himself.

Therefore, if the police want to judge whether Sister-in-law Lin committed suicide, there is still a further investigation, if there is really nothing suspicious, basically suspicious to conclude that she committed suicide, no matter which one it is, evidence is needed to corroborate it.

Another point that must be paid attention to, that is, the trachea of the deceased was ruptured, and an old woman in her fifties, in the event of suicide, could she have her trachea ruptured? It stands to reason that this is simply impossible, and it is simply impossible for a person to commit suicide like this.

Zhou Xuanjun looked at the emerald necklace in the white transparent ziplock bag, if he remembered correctly, the murder weapon on Sister-in-law Lin's neck was a collection lost by an antique collector not long ago, could it be that the necklace was stolen by Sister-in-law Lin? This doesn't make sense, if she stole it, why would she strangle herself with it?

If the murderer's purpose was to commit the crime for this necklace, why not take the million-dollar necklace after the killing? It's really suspicious. As long as you find out how the necklace appeared here, there is more hope of solving the case.

The strange thing is that before Sister-in-law Lin died, she wrote the word "begging" on the mirror with blood, what does this mean? Is it the name of the murderer? Undoubtedly, these two words must be information about the murderer, and the key to solving the case is here. He immediately sent someone to check on the person in the city whose name was Qizheng, and then, starting with the necklace, began to investigate. Obviously, if the murderer wanted Sister-in-law Lin's life, he could have strangled her to death with a rope, and then faked it as a pretense that she committed suicide, so why take millions of necklaces as murder weapons? This is simply not logical.

No suspicious footprints or fingerprints were found at the scene of the crime, and the door was also locked from the inside. So, unless the killer somehow opened the lock and connected the two doors. Or, the killer doesn't need tools or keys to come in and kill. Zhou Xuanjun first suspected that the murderer might have climbed in through the window, but after investigation, this possibility has been ruled out, so no traces of climbing were found. How did the murderer commit the crime? Except for ghosts and gods, it is difficult for him to imagine that people can commit crimes perfectly and kill people invisibly.

"Team Zhou, do you believe in this kind of suicide? Because from the fact that we look at the strangulation marks on the deceased's neck, it is indeed her own strangulation, and the direction of the scars is consistent with the direction of the deceased's hands, if she was strangled after death, it is impossible to do so thoroughly. Police officer Aaron expressed his opinion.

"How could it not be? What if the deceased was strangled by the murderer after death? As long as you control the angle, there is nothing that cannot be done. Zhou Xuanjun said disapprovingly.