Yang Qiuchi took the account book, but was not in a hurry to read it. He asked Manager Jiang: "Do you remember the fact that Zhang went to your pharmacy to buy arsenic?"

"I remember it young." Manager Jiang replied with his waist.

Yang Qiuchi was a little surprised and asked, "Can you remember so many people come to buy medicine every year?"

Manager Jiang smiled and said, "How can this be done? It's just that the transaction of arsenic is different from other things. First, the government has requirements, and pay attention to those who buy arsenic. Second, there are not many people who buy arsenic every year. These three are there, haha." Speaking of this, he looked at Old Master Yang and stopped talking.

Old Mr. Yang snorted in his nose and did not speak.

Yang Qiuchi frowned: "What are you doing? Hesitant."

Manager Jiang was a little embarrassed and opened his mouth to say it but was embarrassed to say it. Seeing that Yang Qiuchi had a warm face, he didn't dare to hide it anymore. He stepped forward, leaned against Yang Qiuchi's ear, and said softly: "This Zhang family was a red card in Yingtian Mansion brothel in the early years. The villain had been to Yingtian Mansion and saw her in the brothel, so he knew her."

Although the voice was small, Old Master Yang still heard it, and snorted again in his nose, with a little displeasure on his face, but he didn't say anything.

Only then did Yang Qiuchi realize that the second concubine Zhang was born in a brothel and had a red card. After Mr. Yang fell in love with her, he redeemed her for her and took her as a concubine. No wonder this shopkeeper Jiang knew him, maybe he had an affair with her back then.

Yang Qiuchi picked up the account book and looked through it. The account book was a bit old and the cover was a bit incomplete. The shopkeeper Jiang helped Yang Qiuchi turn to one of the pages, pointing to the line of words on it and said, "Please look at it sir."

Yang Qiuchi looked closely and saw that the line said: "At noon on March 18, Yang Zhang, the side room of the old man Yang in Yangjia Village, bought two taels of arsenic."

Yang Qiuchi's heart moved, two taels? The nurse Lu said that the second aunt Zhang only gave her one tael of arsenic, but what about one tael?

Old Master Yang also came over to take a look and exclaimed in surprise.

Yang Qiuchi hurriedly asked, "Old Master, is there anything wrong with it?"

"No, no," said Old Master Yang. "Your third aunt was hanged on March 20. It was only two days away. It was a coincidence."

It was indeed a coincidence that Old Master Yang said. Yang Qiuchi did not extract Guo's stomach content for testing, nor did he have this test condition. It is impossible to determine whether Guo had been arsenic in someone.

Zhang bought arsenic and probably wanted to poison Guo. After returning, he thought that if he poisoned the third concubine Guo, it would definitely attract the attention and intervention of the government, and he would soon suspect her. He did not poison her, but instead ordered the nurse Lu to strangle Guo to death, and gave the poison to Lu, and asked her to poison Shan'er and slowly poison Shan'er to death.

This is just Yang Qiuchi's speculation. As for the reason, Zhang's mouth must be pried open to finally know the answer.

Zhang bought two liang of arsenic. It doesn’t take so much to poison a person, but Zhang definitely didn’t know how much dosage it would take to poison a person, so he bought two liang.

In fact, the lethal amount of pure arsenic trioxide (pure arsenic) for adults is only 0.1 to 0.2 grams, and the impure is of course higher. Ancient arsenic is almost impure and contains impurities, so the lethal amount will definitely be higher than this standard.

Zhang only gave her nurse Lu's arsenic one or two, and the remaining one or two of them may still be in Zhang's room. Why did she leave one or two, but not all of them? This would only be known after she pried her mouth open.

Yang Qiuchi discussed his analysis with Song Tongzhi and Old Master Yang, and everyone thought it was very possible. He decided to search Zhang's room immediately.

Old Master Yang's wives and concubines all had their own small courtyards. After Zhang was arrested, Yang Qiuchi ordered his guards to block Zhang's courtyard with his servants and not allow anyone to enter and exit.

The group came to the yard of Zhang's home and searched Zhang's room in detail. After searching for a long time, they could not find it.

Yang Qiuchi was a little discouraged. Did he make a mistake in his judgment? Or did Lü tell a lie? No, Lü didn't need to lie on this. Just imagine, Lü gave more poison and she used less, which would reduce her guilt. So she would not deliberately say that Zhang gave less poison. Zhang should give her only one or two taels of land. In addition, there was no sign that the drug store manager Jiang made a fake account.

So, if these two were not used up, they should still be in the room of Lu. But if they searched inside and out, where would she hide?

One or two arsenic was too little, and there were too many places to hide. Yang Qiuchi frowned when he looked at the messy room.

If it were me, where would I hide it? Yang Qiuchi imagined that this place must not be seen by ordinary people accidentally. The second concubine Zhang has a close maid and servant to clean it, which should be a place that they are not easy to find when cleaning. This place should not be in furniture such as cabinets or dressing tables that anyone can read.

The remaining arsenic is useless for more than a year, will it be thrown away?

No, she didn't know the lethal amount of arsenic. She wouldn't throw it away before Shan'er died. What if it wasn't enough? Besides, no one had suspected Shan'er was poisoned before, so she was not exposed, so there was no need to destroy the evidence of crime.

Have you searched the furniture in the room? According to the speculation just now, it is unlikely that it will be placed in these places, nor in other people's rooms. Because if such important things are placed in other people's rooms, you may not sleep well. Therefore, there are only two places left that can be stored, one in the sky and the other underground.

Search the sky first! Yang Qiuchi asked the servant to bring a ladder and put it on the beam of the house. Song Yuner immediately guessed Yang Qiuchi’s thoughts and said happily: “Brother, I’ll go up and search to see if the second concubine hides arsenic on the beam of the house.”

"There is also inside the beam!"

"Yeah!" Song Yuner nodded. She quickly climbed the beam like a raccoon, searched carefully bit by bit, and occasionally tapped her fingers to listen to the sound.

After a long time, I went down the stairs with disappointment and shook my head.

There is no one on the beams, so there is only the underground.

Underground? Such a small arsenic is hard to find anywhere. However, there should be logic to follow. This arsenic is powder, and it is unlikely to be wrapped in paper and buried directly in the ground. The most likely is to be placed in a small sealed iron box and then buried underground.

Where will it be buried? The houses in the small yard where the second aunt lives are all bungalows, and the floor is paved with blue bricks, which is very neat. Yang Qiuchi squats on the ground, looking for the past one by one.

The blue bricks in the whole room were almost searched. I still didn't find it, only the bed was left.

If you want to be buried underground, this is also the most likely place, because although the servants have to clean up, they will not get into the bed to clean.

Yang Qiuchi ordered the big bed to be moved away. It was a big sandalwood carved bed, which was very heavy. Seven or eight servants worked together and tried their best to move the big bed aside.

Without any effort, I found a few blue bricks on the edge of the bedside. This place can be obtained by squatting on the edge of the bed, which is very likely.

The gap between these blue bricks is quite large. But the fingers cannot be inserted at all. The ancient blue bricks were very thick. If you insert them in and pry them with a knife, you can't pry them out because the blue bricks are close together.

There are several blue bricks in the gap. It is impossible to hide only a small bag of arsenic for such a large area, and it is likely that there is something else hidden.

If something is buried here, how can I take it out? There must be tools, and this tool cannot be too far away.

Under the bed! Yang Qiuchi immediately reacted. He came to the head of the large sandalwood carved wooden bed, reached out to the bottom of the bed to grop. Suddenly, his hand stopped, his face showed joy, and slowly took out an iron handle clip. Yang Qiuchi observed the clip carefully and nodded as if he had any idea.

Yang Qiuchi took the carry handle clip and came to the blue brick, inserted the iron sheets on both sides of the blue brick, grabbed the handle with one hand and held it hard and lifted it up, lifting the blue brick out.

Song Yuner said in surprise: "Brother, you are so smart. How did you discover this mechanism?"

After careful observation, you will find that Yang Qiuchi didn't have time to explain to her. He took out all the blue bricks, and there was a small box underneath with a handle on it.

Yang Qiuchi raised the box and put it aside. The small box was not locked. It was so hidden that it naturally did not need to lock it.

When they opened it, everyone was shocked. It was full of boxes of gold, silver and jewelry. It seemed that the second aunt had prepared a lot of money for private houses.

After taking out these, a small bag wrapped in oil paper was found at the bottom of the box. Yang Qiuchi was happy and spread it slowly carefully. It was a small bag of paper inside. After opening it, it was indeed a small bag of white powder with red powder! In ancient times, arsenic was almost not pure, with impurities, and it showed a color with red color with white.

Yang Qiuchi compared these powders with the small bag of arsenic found in Lu's room. The color and thickness of the powder are roughly the same. Unfortunately, chemical composition tests cannot be conducted. As long as the ratio of pure arsenic and impurities content and even the number of impurities can be proved that the two have the same overall relationship, it can be determined whether the two have an overall same relationship, so as to prove that Lu's arsenic was distributed to her by Zhang from this small bag.

However, the current evidence is enough to determine that Zhang instigated others to commit murder.

Old Master Yang had a sinister face and ordered Butler Pang to take Zhang.

After a while, Zhang arrived and saw the big bed being lifted open, the blue bricks were taken out, the small cabinet where he kept his private money was spread out, and the small bag of arsenic was spread out on the ground. He couldn't help but tremble all over and his face turned pale.

Song Tongzhi asked Manager Jiang to read the registration on the account book to Zhang. Zhang was sweating profusely and spread it on the ground.

Song Tongzhi sneered: "The offender is the offender, the offender is Zhang, and everyone is stolen, and there are some evidences here. Don't you confess?"

Zhang sat on the ground and said, "I've called it. The young master was the poison I asked my nanny to make." At this point, Zhang got up and knelt in front of Mr. Yang, and kept kowtowing: "Master, please spare me, I'm wrong. I'm jealous of Sister Guo's son being favored by you. I will never dare to do it again. Please spare me, wuwuwu."

Speaking of this, the second aunt Zhang burst into tears.

Yang Qiuchi asked: "Why didn't you give all the arsenic to the nurse Lu?"

Zhang sobbed and said, "I heard from Manager Jiang that using arsenic to poison mice, just pick a few nails for small fingernails, so I think it's enough to poison a child, half of it is enough, and I don't give it all."

So that's the case. Of course, a baby won't use that much. Zhang was still worried that arsenic would not be enough in the future, so he didn't throw away the rest. It was really smart but was mistaken for cleverness, leaving behind this fatal evidence.

Seeing that her mother had already pleaded guilty, her daughter Yang Aixiao also knelt on the ground with a sad face and pleaded for her mother.

Old Master Yang had beaten Zhang before, and his anger was mostly relieved. He sighed: "Since you know this, why bother? You poisoned and murdered and violated the law of the king. How could I spare you?" He turned to Song Tongzhi and said: "Sir Tongzhi, I'll leave this bitch to you. You can do whatever you want."

According to the "Da Ming Law", poisoning and killing people is different from general murder. Sentencing reflects the principle of being severity. In the section "Making animals and poisoning and killing people" stipulates: "If a person uses poison to kill people, the death penalty is to kill people (in ancient times, the death penalty is heavier than snatching, and the latter can leave the whole body). There is no difference between poisoning and killing people. There is no difference between completing and attempted. There is no difference between master and slave.

Now, Song Tongzhi was more concerned about the murder of the third concubine who had not yet been solved, and asked: "You also killed the third concubine, Mrs. Zhang, right?"

When Zhang heard this, he shook his head and denied: "No. It's really not! I turned out that I bought arsenic land to poison Sister Guo, but I hadn't found a suitable opportunity to poison Sister Guo. As soon as the third day of the arsenic was bought, she became eccentric and hanged. After she died, I decided to use arsenic to poison the young master. So I don't know who strangled Sister Guo to death."

"You dare to argue and torture me!" It depends on the owner to beat the dog. Originally, Song Tongzhi was inconvenient to torture the concubine Yang. Since Mr. Yang said that now, Song Tongzhi had no worries and ordered to start torture.

This time, Song Tongzhi had brought the constables back from Guangde County, took out a special torture instrument for interrogating the female prisoner, and put it on the joints of Zhang's slender ten fingers. The two constables pulled hard twice. The so-called ten fingers connected to the heart, the second concubine Zhang was heart-wrenching and screaming, and the sound was so sharp and miserable that the whole village could hear it.

Yang Qiuchi did not stop him. He wanted to see if what Zhang said was the truth.

Now Zhang denies that it was her instructing her nurse, Lu, to strangle the third concubine Guo. Is what Zhang said true? Yang Qiuchi is also confused.

If Zhang took advantage of the opportunity of his third concubine Guo's infatuation and instructed his nurse Lu to strangle Guo to death. Since the traces of strangulation and hanging are quite different, he has had a deeper understanding of these two methods of murder since ancient times. He can find out even if he has a little experience and is serious about the autopsy, and it is very likely that he will be exposed.

Once exposed, since there are only two nanny and little maids in the room, the second concubine Zhang will soon cause trouble.

Therefore, if Zhang wants to kill the third concubine Guo, this method will take a great risk. Since she has bought poison and is ready to poison, they live in the same yard, and there are too many opportunities to poison the land. As long as you are patient, you will always find it.

However, there is a greater risk of poisoning, which is to poison others, and it is likely to be found to be murder. In that case, the government will intervene, and there will be endless worry about being discovered. If you pretend to hang yourself, once you succeed, no one will investigate.

Therefore, it is difficult to guarantee that the second concubine Zhang will not use this relatively risky method. What's more, as long as the third concubine's death is more terrifying and linked to ghosts and evil spirits, it is easier to get away with it. Once you pass the test, everything will be fine. Therefore, it is inevitable that she will not take this dangerous move.

The second concubine suggested that the third concubine was infected with an evil demon, so she asked the mage to exorcise ghosts and find a dark land to bury it. This is probably the intention.

After thinking about it, Yang Qiuchi was still not sure. So he just watched coldly to see if there were any breakthroughs.

It seems that today is Zhang's day of misery. After being whipped by Mr. Yang, he was whipped and his fingers were pinched. However, when she thought about how cruel she was instructing her nurse, Lu, to poison the child, she didn't think she was pitiful.

Although Zhang was born in a brothel, she had been in the house of Mr. Yang for about twenty years. How could she resist such torture? Besides, she had admitted that it was a death sentence for poisoning the child, so why should she suffer such suffering? The will to resist quickly collapsed, so for a moment, Zhang screamed and repeatedly called for help.

After being relieved of the punishment, County Magistrate Luo ordered someone to record a confession to Zhang. Zhang admitted that she was instructing her nurse Lu to strangle her to death while the third concubine Guo was confused and pretended to hang herself.

Taking advantage of the victory, he brought his nurse Lu and tortured him.

Lu's spirit was completely defeated. Song Tongzhi told her to poison and kill people, and Yilu wanted to behead him. Whether Lu's confession or not could not escape death. Lu's spirit was completely defeated. In addition, he heard that the second concubine had already pleaded guilty, and the torture was unbearable. The severe pain was unbearable, and he screamed and pleaded guilty for a moment.

After recording the confession for the two, the case was solved. Song Tongzhi and others were very happy and praised Yang Qiuchi for solving the case as if he was a god. But Yang Qiuchi just smiled and said nothing. Song Tongzhi was a little strange. Yang Qiuchi didn't seem very happy, as if he had many worries.

Yang Qiuchi had something to do, and he was unsure. Although there was no problem with the case of poisoning Shan'er, the stolen people and stolen people were all captured, and the two of them voluntarily confessed, but Yang Qiuchi watched the case of the third concubine hanging, feeling that it was likely that she was tortured and forced to confess, and the real murderer might still be at large.

Although Yang Qiuchi was uneasy, he did not have any clues to overturn the case.

However, this is often the time when the murderer is most relaxed. The murderer will think he is safe and often easily exposed. Therefore, Yang Qiuchi is not in a hurry. He is waiting for the arrival of the moment when the light willows and flowers will be bright.
Chapter completed!