Zhang Liang was confused. He couldn't figure out which one was right. After thinking for a long time, he still felt that his brain was in chaos, so he had to stop thinking about it for the time being. He changed the subject and said, "What about the hair? Have you detected it?"

Song Dongxi sighed and said: "After comparing it with the DNA on the water glass you brought, it turned out that it belongs to the same person!"

Zhang Liang didn't seem surprised, but before he could speak, Song Dongxi continued: "However, one thing is strange, there is not only one kind of DNA in that hair!"

Zhang Liang was confused. He quickly asked: "What do you mean? What is more than one kind of DNA?"

Song Dongxi said: "The hair is indeed the same as the DNA of the owner of the cup. I think that person is Mr. Qin, right?" As he said that, he also glanced at Zhang Baoan.

Zhang Liang did not answer him, but just waited for him to continue. Song Dongxi continued: "However, there is blood stains on her hair from a second person who does not belong to her. We don't know who this blood stain belongs to at the moment."

After Song Dongxi finished speaking, he thought Zhang Liangliang would be as confused as before, but unexpectedly, Zhang Liangliang suddenly clapped his hands and said loudly: "That's right! What I thought was indeed right!"

Song Dongxi asked strangely: "What's right? What did you think of?"

Zhang Lianyuan said excitedly: "I have always been unable to understand one thing. If Qin Dada wanted to kill him from the beginning,

Old beggar, then, there is absolutely no need for her to wait a month before taking action. When the old beggar was first sent to the hospital for rescue, his injuries were the most serious. If he was killed at that time, everyone would think that he died of his injuries.

Moreover, even if she waited until now to find the opportunity to take action, if she had already poisoned him, then after the rescue, she should know that since the poison did not cause fatal harm to the old beggar, then she

The act of cutting off the ventilator's air tube is meaningless, and she is the old beggar's exclusive nurse. If something happens to the old beggar, she will be the first to be suspected, so there is absolutely no need to adopt this method. All things put together,

It can only mean one thing, Qin Dada may not be the murderer of the old beggar, at least, not the one who directly killed him!"

Song Dongxi asked doubtfully: "What about the hair? The hair is indeed hers!"

Zhang Liang said: "I have actually judged that the hair belonged to Qin Da Da, because if someone really wanted to frame her for the ventilator, there would definitely be some direct evidence pointing to her. After all, the scalpel is a precision instrument in the hospital.

, it may not be so easy for people to discover the above evidence. In contrast, if the deceased has direct evidence pointing to a certain person, then that person's suspicion will undoubtedly be greatly increased."

Song Dongxi still didn't quite understand, so he asked: "But I hear what you mean, why do you seem to be so sure that Qin Dada is not the murderer?"

Zhang Liang nodded and said: "I am sure that Mr. Qin is not the murderer. The reason is very simple. If you were the murderer, would you run away and expose yourself before anyone suspected you?"

Song Dongxi said: "But, didn't you discover the problem with the ventilator first, and she was worried that you would expose the matter, so she ran away?"

Zhang Liang shook his head and said: "No, the ventilator doesn't actually explain anything, because in a place like a hospital, it's not surprising that anything happens to such a medical device. My idea was too naive at first. Later, Li

The police officer also warned me, so the really useful evidence is the scalpel! But Qin Dada disappeared after talking to me. She may not even realize that I discovered the abnormality in the ventilator tube, so

, I speculate that she did not escape, but was captured by the person behind the scenes. Only by controlling her will everything arranged by this person seem reasonable and impeccable!"

Song Dongxi was also a little confused by the complexity of the matter at this time. He tried his best to sort out the whole matter in his mind, but still had no clue. He had no choice but to say: "After talking for a long time, we still have no way to know the mastermind behind the scenes.

Who is it?"

Zhang Liang was also thinking about this problem. At this time, Song Dongxi's cell phone suddenly rang. He picked it up and saw that it was a short message. Song Dongxi looked at it for a while, put down the phone and said to Zhang Liang: "I sent it to my colleague, the director."

There is also news in the photo. The bloody mucus you observed deep in the old beggar's throat is actually a kind of bloody frothy phlegm, which is caused by pulmonary edema. In other words, the real cause of the old beggar's suffocation is his lungs.

Edema!”

Zhang Liang asked: "Is it also caused by fluid accumulation in the lungs?"

Song Dongxi shook his head and said: "Strictly speaking, pulmonary effusion and pulmonary edema are two diseases. Pulmonary effusion is chronic, while pulmonary edema is acute. However, both diseases have one thing in common, that is, they both affect breathing.

The system is affected, and they are all symptoms of hydrogen sulfide poisoning! Pulmonary effusion is just like the old beggar’s early stage. When the poisoning is mild, it will show up slowly. To form pulmonary edema, severe poisoning is required.

, that is, the ingestion of high concentrations of hydrogen sulfide can lead to direct suffocation and death within minutes or even seconds!”

Zhang Liangliang asked doubtfully: "But, didn't you say that the concentration of toxins in the old beggar's body is not high? Can such a low toxin content cause pulmonary edema?"

Song Dongxi was also confused. He said: "I am also very surprised. Logically speaking, with the degree of poisoning of the old beggar, it should not cause pulmonary edema. Even in the later stages, even pulmonary effusion will not appear. But now this

result……"

Zhang Bao thought for a while and suddenly asked: "Besides poisoning, are there any other conditions that can cause pulmonary edema?"

Song Dongxi said: "Technically speaking, pulmonary edema means that the balance of tissue fluid in the lungs is out of balance, resulting in the inability to be absorbed by the lymphatic and venous systems, thus accumulating between the alveoli and hindering the ventilation function of the lungs. Simply put, it is due to

Some external reason breaks the breathing rhythm of the lungs, making the lungs unable to work normally. This reason may be caused by viruses or toxins, or it may be caused by external trauma, or even a simple bifurcation, if there is no

If it is handled well, this phenomenon will occur if it becomes serious."

Zhang Liang nodded. Suddenly, he had an idea, so he asked Song Dongxi in a low voice: "What if... this is the case?"

Song Dongxi was a little surprised when he heard Zhang Liangliang's question, but he still nodded and affirmed: "This situation also needs to be divided into specific quantities. In fact, if the quantity is low, it will not have much impact, but if the quantity is large, then

It can directly cause people to suffocate in a short period of time."

Zhang Baolian received an affirmative answer, and a smile appeared on his face. Then he said, "I think the old beggar must have been in pain when he died!"

Song Dongxi nodded sympathetically and said: "It is said that the most painful way to die is suffocation. Of course, drowning is also a type of suffocation. In the last few seconds of a suffocated person, due to lack of oxygen, the muscles of the whole body will spasm.

And it will hurt very much, like being delayed!"

Zhang Liang nodded, and now he smiled for the first time.

When Song Dongxi saw Zhang Baoan like this, he couldn't help but ask: "What? You look like you are already confident?"

Zhang Liangshao shook his head and said: "It's not like being confident, it's just that many things are connected together. This feeling of suddenly understanding everything is really refreshing!"

Song Dongxi asked: "Then do you know who is behind the scenes?"

Zhang Liang hesitated for a moment, then said: "I have a rough idea, but..."

Song Dongxi helped him and said: "But there is no evidence, right?"

Zhang Liang sighed and nodded.

Song Dongxi was also a little helpless. He asked, "What should we do now?"

Zhang Bao thought for a while, and finally seemed to have made up his mind. He said: "Since there is no evidence, let's create one ourselves!"

Song Dongxi was startled, and quickly held down Zhang Liang's hand and whispered: "Brother, it is against the law to give false testimony!"

Zhang Liang took his hand out in disgust and said: "Nonsense, of course I know, who said you have to perjury!" After saying that, he glanced at Song Dongxi like he was an idiot.

Song Dongxi breathed a sigh of relief and asked again: "Then what do you want to do?"

Zhang Liang said: "We must let the murderer reveal his flaws!"

Song Dongxi asked doubtfully: "How to do it?"

Zhang Liang did not answer him, but took out his mobile phone, dialed a number, and then said: "We will definitely not be able to do it alone. We need to find help." After saying that, the phone was connected, and Zhang Liang heard that
Chapter completed!