She retorted so coldly, and so loudly, that all the onlookers were stunned.

The blackening of bones after poisoning has always been a common thing for people to talk about. Not to mention the pretense, even their ordinary people know it. However, at the moment, this woman's work, and such a loud question, really made them a little stunned.

If it weren't for the ability of seeing her inspect Qin Tiezi's bones before, I was afraid that someone would have ridiculed her at this time.

Feng Qizuo was also stunned at this time, he had been doing it for many years, and he had never met such a faceless person. Thinking of the hands and feet he had just moved, he couldn't help but feel a little flustered.

Xu Chu seemed to see his panic, turned his head to look at Qian County Ling and said, "Lord Lao asked him to divide the remaining pork bones that he had just used into two parts, and then send someone to find a living creature and some arsenic that was enough to kill." ”

As if she was a little uneasy, she advised: "This trip needs to send two officials to supervise each other, and when it is time for the pharmacy to buy arsenic, let the doctor follow all the way, so as not to cause trouble when the arsenic is exposed." ”

As her words fell, she saw an official who was holding the pork bones hurriedly stepped forward and placed the pork bones on top of the two white cloths.

Xu Chu didn't explain, and walked directly to one place with the toolbox, and then took out a small jar of ointment from the bottom of the toolbox and mixed it into vinegar. Only a moment later, when she wiped a few pork bones, she saw that the pork bones were gradually covered with a layer of gray black.

When this was over, she took a clean pork bone and threw it into the pot that Feng had used to cook the bones. After a while, he fished it out, but he saw that it was full of black color.

At this time, everyone could see that the bone was completely dull and colorless, no different from the color of Peng Yiguang's bone.

Most of the people present were ordinary people, and they often bought some worthless big bone soup to improve their food, and naturally knew that ordinary cooking would not make pork bones so dark and dull.

Xu Chu saw that everyone was either groaning or amazed, so he opened his mouth to explain: "There are often some secret techniques circulating between the works, and there are some things that cannot be put on the table. Some people cover up the wounds on the deceased's body for personal gain, and they will use madder in vinegar to erase the wounds on the deceased's body. There are also some pretenses, for selfishness or out of hatred for someone, adding some drugs to the autopsy to make the corpse appear similar to poisoning or injury. One of the ways to do this is to apply a kind of sherb paste to the bones, so that the bones are blackened and scarred. I think this is why after Feng Yanzuo wiped the bones of the deceased with vinegar, the originally white bones would be blackened. ”

"Other than that, I know how to cook bones for autopsy. But that method, in fact, can only distinguish whether the wounds on the bones of the deceased were left before death or caused after death, but they do not know that boiling bones can also detect poison. Xu Chu said as he took the spoon for scooping the bones and rummaged in the pot, "Moreover, it is not impossible to find a way for the bones to be dull and black after boiling." If my guess is correct, Feng Qizuo must have put something like cassiterite or tin in the pot. ”

At this time, she was not aggressive, but a series of words made Feng Cheng sweat profusely. And as he pretended to deny it calmly, he only heard an oops, and Xu Chu had already fished out a piece of tin.

So she couldn't help but squint and said, "It looks like it should be a piece of tin on a tin pot." ”

Everyone's eyes couldn't help but look at Feng Yanzuo, whose face was pale and ugly.

Feng Yanzuo naturally gritted his teeth and refused to speak, and after a long time, he snorted coldly and said: "What tin piece, I don't know, you don't want to talk nonsense." ”

At this time, there was no need for Xu Chu to say anything, but Xiao Qinglang had already raised his voice and ordered: "Check Feng Chengzuo's autopsy toolbox and rummage through the cheap grass paste like Xu Chengzuo's hand." ”

The official didn't say a word, and regardless of Feng Yanzuo's obstruction, he directly dragged down the toolbox on his side, and after a little look, he found that there was indeed an object the size of a rouge box hidden inside. When it was opened, it was identified by Xu Chu, and it was indeed a cheap grass paste.

When everyone was in an uproar, Xiao Qinglang had already instructed the official behind him to search Feng Yanzuo's residence and find the tin pot!

Tin ore is more common than gold and silver mines, so even ordinary people often buy tin pots or tin candlesticks to use. One is common and beautiful, and it is inexpensive, and the other is easier to preserve than porcelain pots and wooden iron candlesticks.

Therefore, it is not surprising that there will be tin pots among Feng Cheng's writers.

The atmosphere became so solemn, until the official who was sent to Feng Cheng returned to his home, and sure enough, he found a tin pot full of potholes that had been biochemically opened. Apparently, he cut it with something.

Feng Qizuo's face stiffened slightly, and then he trembled involuntarily, but because of his meaty appearance, people couldn't tell whether he was scared or annoyed......

However, Xu Chu did not ease his apprehension, she still said coldly: "Not only that, I think you also deliberately made a false autopsy conclusion when you conducted the autopsy." You know that the silver needle probed the deceased's throat, most likely because the peanut paste left in his throat caused the silver needle to turn black, but you still made the conclusion that the silver needle was poisoned by arsenic. ”

"You can excuse yourself from ignorance, but I found out that you had identified the same poison as arsenic the year before. Tell me, how can you even identify such a poison that is out of the way, but you don't know how to examine arsenic? ”

Feng Cheng was silent, and opened his mouth for a long time, but he couldn't defend himself for a long time.

There was silence above the cemetery, and everyone did not dare to say more. And the father and mother of the Peng family are even more tearful, full of sadness. It was Peng Zhongyi, whose face was gloomy, and reprimanded Feng Chengzuo: "You deceived our Peng family, made my sister-in-law cry out for grievances, and made my brother unable to look at him, you surnamed Feng are really good!" ”

His eyes glared at Feng Yanzuo angrily, and his righteous words were full of anger, so that everyone around him could feel the anger in his heart. Some people who know the inside story of the Peng family can't help but sigh with emotion, it is really a friendship that has grown up since childhood, even if it is not a mother and compatriots, but it also protects the brother like this.

As for his sudden voice, Xu Chu and Xiao Qinglang looked at each other tacitly and did not say anything. There are some things that they are not willing to meddle in as long as they are not involved in the case, and they will not expose them.

The hot wind rushed by, and Feng Qizuo, who should have felt unbearable heat, shivered coldly. His voice was a little muffled, but he also argued a little strongly: "That doesn't prove that this bone was not poisoned." ”

Just as he was saying this, the official who was sent by the Qian County Order to find living creatures and arsenic also hurried back. At this time, they happened to come with a piglet, and naturally there was also a sitting doctor from the Hejitang Medical Center in this county.

When the doctor arrived at the cemetery, his face was full of disgust and he felt very unlucky. But thinking of what the official said that this matter was approved by King Jing'an and ordered by Lord Qian, he didn't dare to complain.

Xu Chu didn't care whether his face was black or not, he stepped forward directly and said, "I also bothered the old gentleman to help me testify, and see how arsenic killed me." After a pause, she softened her voice and said, "Naturally, the juniors will also be willing to tell the old gentleman the way to cure the poison of arsenic." ”

When the old doctor, who was still impatient, heard this, he couldn't help but be dumbfounded, and almost bit his tongue. You know, at the moment, arsenic poisoning is simply hopeless. But the little woman in front of her said so lightly that there was a way to detoxify.

Although she was wearing a plain cloth mask, which made people unable to see her expression, the old doctor still felt that this person was not lying.

He hesitated for a moment, but finally nodded in response.

Just after he nodded, Xu Chu asked people to mix arsenic into the water and feed it to the piglets. It didn't take long to see that the piglet, which had just been alive, was already lying on the ground and twisting wildly, and then the mouth and nose continued to squirt liquid until it was out of breath.

After Xu Chu was tentative, he got up and said: "In fact, the so-called arsenic poisoning is mainly due to damage to the gastrointestinal tract, and it may also hurt the liver, kidneys and peripheral nerves. Dehydration caused by repeated vomiting and diarrhea necrosis of the intestinal mucosa and inability to absorb water and oxygen, resulting in hypovolemic shock and death. ”

In her previous life, she was also very interested in the seven tricks of bleeding depicted in film and television dramas and arsenic poisoning in martial arts. At that time, many of the forensic classmates who were with her were surprised by this, especially when Pan Jinlian poisoned Wu Dalang with arsenic, and then secretly left two black bones to prove that Wu Dalang died of arsenic.

Logically speaking, the so-called arsenic poisoning is actually mostly arsenic trioxide poisoning. Arsenic poisoning is deposited in the human body and has different affinities for different organs. However, whether it is acute arsenic poisoning or chronic poisoning, its distribution is mainly in the hair and flesh, not bones.

To put it simply, arsenic is often found in the water and soil commonly used by the people in Northwest China, so it often causes the local people to have symptoms of skin blackening and excessive keratinization of the soles of the hands and feet, which is the most typical chronic arsenic poisoning. But no matter how many years or decades the locals repeatedly cite arsenic-containing water sources, the bones will not turn black after death.

Because at this time, their forensic students also debated with many people. Although the debate was not settled in the end, it also made many people more and more interested in forensics.

As her words fell, the autopsy knife in her hand also neatly dissected the dead pig.

Although there are many differences between pig and human corpses, they are all the same, and for Xu Chu, who is good at dissection, it is not a problem.

The dead pig had already opened its skin and exposed its flesh in an instant, and even the red color could be seen between the flesh.

The smell of real blood and the stench came in, making everyone's faces more and more ugly, and even if they held their breath, it was difficult to resist the strange smell.