Bai Qing carefully took out a plate of liquid medicine, and then slowly took a little rouge and sprinkled it in, the liquid medicine instantly turned into a purple and black color, and a fishy smell came to his face, Bai Qing couldn't help frowning.

"This poisoner is too ruthless." Bai Qing scolded angrily, this is not only killing people, but also ruining people's faces, what kind of hatred?

Li Meng carefully stirred it with a silver needle, then frowned and said, "This rouge fragrance just covers this smell...... However, this is also too strange, this poison looks like aconitum grass, but it is diluted, and after use, it will make people's lips purple, vomit and diarrhea......"

"It's not fatal." Lu Zhen added on the side.

Li Meng nodded, he is in the front yard, and the palace has seen the ladies compete for favor with this, but if there is a murder, these ladies are also afraid. Therefore, the general poison is used after dilution, which does not make people die, but it also makes people feel bad, and this dose is obviously not much, which tastes strange.

"This color is also strange, I have studied some poisonous weeds, but I have never seen this color, and if the rouge is really full of poisonous weeds of this color, then it is not one, but all of them." With his hands behind his back, Bai Qing turned around and went to the shelf on the side, his eyes searching for the cans.

In the jar are poisonous insects raised by Lu Zhen, and there are some poisonous weeds planted, usually except for these three, no one else dares to touch them. Bai Qing really couldn't think of the reason, so he came over to take a look, maybe he could get some inspiration.

Li Meng also turned around, took out some of the utensils he treasured, carefully filled a little liquid, put it into an incense burner-like bottle, and then slowly roasted it over the fire. Lu Zhen recognized that this was used by Teacher Li Meng in Tai Hospital before, which could preserve the medicinal properties to the greatest extent.

Soon, an even worse smell wafted from the incense burner.

Bai Qing frowned, hurriedly opened the doors and windows, and happened to see Lu Chengyan, who had only been resting for two hours and went straight over.

"You came just in time, isn't this Miss He's rouge different from other people's, such as the varieties you bought?" Bai Qing asked.

Lu Chengyan was stunned for a moment, remembered the record book he had read at night, and frowned: "It's the same, it's the best-selling one in the shop, what's wrong with rouge?" ”

Bai Qing beckoned, then turned around and returned to the house, Lu Chengyan immediately followed, but as soon as he stepped into the door, the fishy smell almost fainted him.

"It may be that the material of the rouge itself clashes with something, and then led to the death of Miss He." Bai Qing said, approaching Li Meng's incense burner.

"Master, don't mess with things here." After Lu Zhen instructed, he also leaned over.

Lu Chengyan didn't know what it was, so he also leaned over.

Li Meng put on a metal glove and carefully opened the lid, and at the same time, the three of them immediately covered their mouths and noses.

Lu Chengyan covered his mouth and nose after realizing it, but he had already inhaled some, and then he was dizzy and in a trance, and then he was sick to his stomach, his body was weak, and he almost fell.

Lu Zhen hurriedly supported Lu Chengyan, Bai Qing casually found a fan to fan him, and after dissipating the smell, Lu Chengyan was much better.

"Rest assured, after these burning poison gases are diluted by air, there will be no problem." Bai Qing said comfortingly.

Lu Chengyan's face was slightly pale and nodded.

"When the burns are finished, there is white powder and dark green powder in the residue left. The dark blue is the aconitum grass, as for the white ......" Li Meng carefully picked out a little white powder, put it on the paper, and carefully put it on the table.

"This white doesn't smell good." Bai Qing frowned.

"It was the mixture of these two that caused Miss He's death, so someone added this white powder to the rouge instead of aconitum grass!" Lu Zhen said immediately. Aconitum grass doesn't rot the face, it's the white powder that rots the face.

"Miss He is also miserable, someone poisoned her, which happened to be mixed with the former." Bai Qing shook her head helplessly, and actually took the young life of a girl like this.

Lu Chengyan immediately thought of some of the things that the maid said, and immediately had a number in his heart, and when the time came to open the trial, he must give Miss He an explanation.

"What is this white powder? Can you find out? Lu Chengyan asked anxiously, and after determining the poison, he had a direction to trace.

Bai Qing shook his head in embarrassment at this time, and said, "I have also traveled to many places, but this is the first time I have seen this poison, and I can't do anything about it...... old man."

Li Meng also shook his head with an embarrassed face, he had seen many poisons in the palace, but none of them were similar to the medicinal properties of the powder in front of him.

Lu Zhen carefully picked up a little white powder and dripped it into a dish of clear water, which immediately turned invisible. I put a little more and put it in a new rouge box, and it instantly blended into the original color, and there was no difference.

"This poison is so powerful." Lu Zhen suddenly said, "Such a precious poison should be rare." ”

Bai Qing agreed with this statement very much, and said: "It's really rare, I can even say that we don't have this kind of poison in Daliang, maybe it's a ...... like Fanbang barbarians."

Lu Chengyan's eyes lit up, and he suddenly said, "I'll go find Li'an." ”

Cheng Jiabu Zhuang was doing business with a person from the Western Regions some time ago, the fabric was gorgeous, the pattern was very exotic, he remembered to say softly that he could say what shawls and the like. Since he is from the Western Regions, and he is doing business in various countries, he may know what kind of poison this is.

Lu Chengyan immediately ran out of the Lu Mansion, during which he happened to meet Jiang Yun who was decocting medicine, Jiang Yun immediately stopped Lu Chengyan and said, "Master, Gu Sheng said that he remembered something. ”

Lu Chengyan immediately stopped.

Gu Sheng said that there are basically many female customers in the store, and sometimes men come to buy them, which is normal...... But last time, there was a couple who looked like husband and wife but looked like they were separated, and they came to pick up rouge, almost where rouge was located, which one sold the best, they all inquired in detail, and finally bought them, and Gu Sheng didn't care. Looking at it now, it seems that it is specially stepped on. After that, Jiang Yun said angrily: "These people's hearts and livers are really black. ”

"Jiang Yun, you ask Gu Sheng if he remembers the appearance of the couple, and then find a painter to draw it." Lu Chengyan said immediately.

Jiang Yun's eyes lit up and said, "Master, don't worry, I can paint, and I must catch those two thieves." With that, he immediately rushed into Gu Sheng's residence with the medicine.

After Lu Chengyan saw that the prospect was getting clearer and clearer, he couldn't help but relax a little, and when he opened the door and walked out, his eyes were fixed, these people who were watching were actually here again!