What kind of poison is has been determined, the only trouble is that the scene has been cleaned up, so some traces have naturally been erased.

There's no way to know for sure what was poisoned, so it's impossible to determine which part went wrong.

Feng Yinjunjun's eyebrows were lightly hooked, his eyes were in a trance for a moment, and he turned his head: "It happens that arsenic is used, fortunately, it is used here, and it will not be impossible to detect, go to the kitchen to find out if there is, but it is more likely to be poisoned in the kitchen." ”

"Do you know that?" He stopped packing up his autopsy tools and looked up at him.

In ancient times, people used silver needles to test drugs, but silver needles had limitations.

The blackening of the silver needle can only prove that there is sulfide in the food, and if it is a porridge with preserved eggs and lean pork, the silver needle will also turn black, because the preserved egg contains sulfide. Arsenic is arsenide, if the purification technology is refined, it may not be able to be detected, but the ancient purification technology does not do this, so there is generally some sulfur stored, and the silver needle can also be detected.

"Hmm." Feng Yin Lang laughed out loud, sloppy eyes, responded simply, and suddenly changed the topic: "Can anything else be detected on Chen Jiafu's corpse?" ”

"There were some pastries and tea in the stomach, but the stomach ulcerated after death, so the food residue was not digested much, and there was a green residue that looked like mung bean cake." Pity Zheng shook her head, indicating that there was no more to discover, and continued: "There are also some cold vegetables, which look like fungus, cabbage and other foods. ”

"Mung bean cake and tea ......" Feng Yin was silent for a moment, then walked over to Lian Zheng and stroked the broken hair in front of her forehead for her, pinning it to the back of her head, "If you enter the room and there is a table of dishes, with pastries, hot dishes and cold cuts, what do you choose first?" ”

Lian Zheng turned around, took off the hat on the other table and buckled it: "I don't like to eat pastries, so naturally I won't choose it." But mung bean cake is more digested than other objects, so mung bean cake should be the first to be eaten, and so on......"

"What's the matter, you suddenly want to eat this?" Feng Yin looked at her fixedly, frowning.

“…… In the morning, I didn't go to the thatched house, but on the way back, a few maids quarreled over a plate of mung bean cake. "Pian Zheng bit her lower lip, "Su He said that the plate of mung bean cake was asked for by the eldest lady first, but because the kitchen people just came, they couldn't distinguish the girls in several rooms, but they were snatched by the second lady, could it be that the murderer was the eldest lady who wanted to poison him?" ”

"That's not right." Feng Yin shook his head: "If it is the eldest lady who wants to harm, then it will not happen that the second lady will be suspended by someone after Steward Chen's poisoning." The current situation seems to be trying to poison the second lady, but coincidentally, Steward Chen ate this mung bean cake at this time and was poisoned, and after killing the housekeeper by mistake, he couldn't make a plan to regenerate, so he went to hang the second lady. ”

The analysis of the wind cause is not unreasonable, but it is more reasonable than the murder of the eldest lady.

Pian Zheng nodded, "The maid said that the second lady's girl wanted to fight for this plate of mung bean cake, and she was beaten and scolded for this." can know that no matter which side robs the two rooms, they will not be able to hand them over, and the person who can take this opportunity to enter the kitchen to poison them may not be able to infer that it must be someone from the house, and the entire Taolin Town knows the broken mouth of the two ladies. It's easy to know that the relationship between the two is not good, even if I'm a newcomer, I can listen to it. ”

“…… The person who can not arouse the suspicion of the people in the house, and can still sneak into the room of the second lady and fake it as a hanging beam to commit suicide, must be a person who knows the roots of the house, and the people next to him may not be able to know that the room of the house has an inner window, so it is still the person who has passed the most suspicion. Feng Yin's answer was not unexpected, the two of them looked at each other, and naturally had an idea in their hearts.

"Sure?" Pian Zheng took the coat, put it on and tidy it up.

"You don't?" His lips were lightly raised, and he smiled: "Lin Zhutou is still in Hefu, and everyone has not left." ”

Come to think of it, the murderer is already in the house, catching turtles in the urn, and all this is close to the truth!

★

Pian Zheng and Feng Yin rushed to He Mansion and explained everything in detail.

Lin Zhutou and Lian Zheng came to the kitchen, the kitchen is in the southwest of the lobby, the distance from each room is moderate, and the smoke will not spread everywhere.

The kitchens of large households are basically equipped with at least four or five maids and cooks, and the He Mansion is equipped with a chef, a cook and a few maids. The kitchen was clean, the smoke was not heavy, and the firewood was neatly located ten feet from the stove. In the kitchen, the wall cabinet is neatly arranged with dishes and chopsticks.

Lian Zheng watched Zhang Zhuhai bring all the people in the kitchen one after another, and whispered: "Lin Zhutou, you talk to a few people in the kitchen to see if there are any clues, and I will talk to that maid alone." ”

"Okay, there's Lao Ruan." Lin Zhutou nodded, no opinion.

Feng Yin didn't have much interest in these natures, and took a break along the railing on the side, but his eyes swept towards the pityan from time to time.

Pian Zheng and Zhang Zhukuai whispered a few words, Zhang Zhukuai glanced back at Su He, frowned again, half loudly, and waved his hand like a chicken: "Don't take it out of the house." ”

Pian Zheng bowed his head again and again, made a humble appearance, and poured a few words of thanks, and then shouted out Suhe from several people.

Except for Su He, the maids next to him all looked at it enviously several times, and then continued to follow Zhang Yu towards the kitchen.

Soho and Pienkite went a little farther, but not too far.

Su He naturally knew the pity of the kite, and knew that she was not familiar with the road at all, so he asked her to follow her, and asked all the way: "What did you say to Na Yu Kuai, why did he let me go?" ”

"I said I know you, you have nothing to do with this case, said a few more good words, invited him to a drink, made a guarantee, and he naturally let you go." Pian Zheng replied truthfully, but he didn't say all the words, and he taught Zhang Zhu to act a few words quickly, but he definitely couldn't say it.

Su He's eyes widened: "How do you know that I am not a murderer?" ”

"With the virtue of your young son, I'm afraid that you don't even dare to kill chickens at ordinary times." He looked at her with a smile.

Actually, this is not true.

In a world that people's hearts can't see, how can we see the murderer clearly at a glance.

"It's not that I don't dare to kill chickens, it's just that those chickens keep pecking at me." Su He's face turned red, and she didn't know the bottom of her heart, seeing that she was smiling happily, she said angrily: "Why do you talk about me like them, I won't talk to you anymore." ”

"Good sister, if you don't talk to me, I'll save you for nothing." Pian Zheng stepped closer to Su He, pinned his hand behind his back, and said with a smile: "Don't take it seriously, it's just a joke with you." ”

"I heard that someone found out that someone had poisoned us, but there were only a few of us in the kitchen, and if someone else sneaked in, it would inevitably be relied on us. Su He thought for a while, "We have to try all the pastries before sending them out, and then hand them over to the people themselves, there will be no problems in the kitchen, could it be that Sister Lilac hates the second lady?" ”

Lilac is the maid of the second lady, and she forcibly took the mung bean cake from the kitchen to Lin Rong that day.

"What Su He said is reasonable, but there is no reason, good and decent, why did Lilac murder the second lady?"

Su He blurted out: "Because of the position of the second lady, it turned out to be for Lilac!" ”