Imperial Physician Liu sorted out the things in his medicine box, and explained in detail, in his opinion, this is a good opportunity to show off his medical skills, otherwise his research on toxins is more just for prevention!

And Xuankong, who had already stood up, stood there nodding his head while listening attentively, and asked some questions from time to time, showing his skills in alchemy as a Taoist priest.

"This Xuankong also understands alchemy, looking at his current posture, is it really poisonous?" The fifth day Keng thought in his heart, but there was no expression on his face, you must know that the years of refining this purple sand tile can be early, from the discovery to the present, there are twenty or thirty years, except for the problem of firing, if there is really anything else, it will have been exposed a long time ago.

As the preparation of the imperial physician Liu Jinsheng was over, Liu Jinsheng took out a slightly yellowed piece of paper and placed it three inches above the purple tile, "Your Majesty, please look! I am a piece of paper, it has been dipped in the first potion I introduced before, if it is an alkaline poison and volatile, then my piece of paper contaminated with the potion will gradually turn red, on the contrary, if it is an acidic poison, it will gradually turn blue, of course, this purple sand tile is impossible-heh!"

Liu Jinsheng couldn't stop talking, because his piece of paper quickly turned into a red close to blood red in everyone's eyes, you must know that the ordinary alkaline substance only makes his paper a little pink at most, but this kind of light, but close to blood red color shows that this purple sand tile is poisonous, but fortunately, the color is not thick enough, if it is thick, it is highly poisonous!

"Of course, this is only a preliminary judgment, there are a few things in this world that make the paper red and not poisonous, I will change the second potion to spray on the surface of this tile, if this potion touches a poison that is too alkaline, it will turn black, if it is-"

Imperial Physician Liu didn't expect him to take back the red paper, so he took out the potion and sprayed it on the tile, and the originally transparent potion turned gray and black. Looking at the black Liu Jinsheng's forehead, beads of sweat began to appear unconsciously. If there is no test by the predecessors, then it is better to say, he knows the results of the previous drug test! He has not tested for toxins before, but now he has tested for it, where did he put those former imperial doctors? Thinking about the use of the purple sand tiles by so many people, Liu Jinsheng did not know for a while what to do, this is going to greatly offend people, and if it is not done well, it will also involve human life!

"This, Your Majesty, I also brought a kind of silkworm that I raised today, which is more sensitive to toxicity, and I now sprinkle the powder of purple sand tiles on the leaves it eats. Liu Jinsheng thought about it and took out a small box, which raised more than a dozen silkworm babies, this kind of silkworm is actually not as keen as his potion, but now he uses the potion again, Doctor Liu is a little afraid to use it! Try it with this silkworm baby first, as long as the silkworm baby does not change big in a short time, then even if it is toxic, the toxicity can prove that it is within the safe range that people can bear.

Ordered someone to change a tile, get a small piece, crushed and scattered on a mulberry leaf, waited for a quarter of an hour, to see that the silkworm baby in contact with the purple sand tile fragments, or healthy and white fat, Liu Jinsheng was just about to speak, but the silkworm baby suddenly did not move, Liu Taiyi quickly touched the body of the silkworm baby with a small wooden stick, but found that it was already a dead thing!

"Come on, take a few more tiles? Doctor Liu, you will test me again as you said. "On the fifth day, Keng was a little uncomfortable here!

Hearing the emperor's narration, the imperial physician Liu Jinsheng could only continue with his head, all the tiles were almost the same result, only a few silkworm babies on the tiles lived for a quarter of an hour, but the state was also extremely bad. In the toxicological analysis written on the spot, the imperial physician Liu Jinsheng said cautiously in his heart, "What should I do? How should I evaluate this toxin, if it is heavy, it will be irresponsible, if it is light, it will be irresponsible!

"How is it? Doctor Liu, has the toxicological analysis been written?" asked on the fifth day, Keng, who couldn't wait.

"Go back to the emperor, write it right away!" The imperial doctor Liu Jinsheng wiped the sweat from his forehead, feeling that he was thinking too much, and it was useless to hesitate so much, thinking about it so much Liu Jinsheng unconsciously looked up at the roof of this hall, because it was also paved with purple sand tiles, "This purple sand tile is blown and rained down by the wind outside, by the way! I heard that the purple sand tiles were taken from this hall twice before!

Liu Jinsheng had an inference, but his heart relaxed, how to write, how to write, so he wrote three pages of what he could have written in just two pages!

After receiving the toxicological analysis written by the imperial physician Liu Jinsheng, on the fifth day, Keng looked at the three-page paper full of small characters in his hand and asked, "According to what you say, this purple sand tile is indeed poisonous." ”

"Return, Your Majesty, the preliminary analysis of this purple sand tile is indeed poisonous, but the toxin content is not large, relatively thin, if this amount is long-term contact, it is indeed possible to cause physical discomfort or illness due to accumulation, but because the tiles are in a high place, the wind and sun take away a large number of toxins, so unless the rain brings the toxins to the ground on a rainy day, and then volatilizes for people to absorb, generally placed on the roof most of the amount of dissipation should not make people sick! And according to Wei Chen's inference, after the toxin of this purple sand tile is placed on the roof for three months, its toxicity will dissipate!"

"Dissipated?" said the fifth day, lowered his head and pondered, and then looked at Xuankong Zhenren again, "Xuankong, your daughter is sick from two months after the house was changed?"

"Yes, Your Majesty, it was the rainy season two months before my granddaughter's illness!"

Hearing Xuankong say this, the fifth day Keng fell into silence, he still knew how long the tiles of the previous drug test had been placed on the top of the main hall, but it was too coincidental that Xuankong chose to attack at this time!

"Your Majesty, that granddaughter of Poor Dao has been weak since she was a child, and sometimes the bite of a mosquito will turn more than half of her body red, let alone this toxin!"

"Xuankong, are you here to complain, is it really because of your granddaughter?"

"Your Majesty, Poor Dao is here today not only for my granddaughter to ask for some compensation from the tiler!

"For the public, what do you mean?" On the fifth day, Keng looked at Xuankong Mimi, and he didn't know what he was thinking.

"Your Majesty, Concubine Rong, Concubine Liang's house is all purple sand tiles!"

"Xuankong, what do you care about these outsiders?" said the fifth day, raising his sleeves.

"Your Majesty, Concubine Rong once worshipped the poor Tao as a teacher and studied the Taoist scriptures, and the purple hall where Concubine Rong was located was also purple sand tiles. ”

"According to your meaning, do you want to replace the purple sand tile on Concubine Rong's house?"

"Your Majesty, Concubine Rong's last miscarriage was the time to change the purple sand tile!"

"Miscarriage?" On the fifth day, Keng suddenly froze when he heard this, and then stood up suddenly, and shouted: "Come on! Bring me all the people in the Tai Hospital who have studied poisons, and I want to see if it is really poisonous!"

As soon as he heard this, Xuankong Zhenren knew that this thing had really come to pass, but he was now sweating a lot on his forehead! If he hadn't remembered that after seeing him use purple sand tiles in his bedroom on the fifth day, he would not have made this trip with purple sand tiles in more parts of his palace!

......

...... One by one, the imperial doctors took turns to fight, in the face of these newly fired purple sand tiles, the imperial doctors could not say that it was not toxic, the fifth day of the gas Cong ordered people to put all the palace in the palace with all the tiles on the purple sand tile, one by one, also after this poison test, at this time everyone determined that the purple sand tile is indeed poisonous, but after the toxic volatilization on the roof, it is non-toxic, and the impact on the residents in the house will disappear, and the purple sand tile after three months is indeed non-toxic. As for the impact of Xinwa on pregnant women and fetuses, most of the doctors gave an answer that was unfavorable to pregnant women!

Listening to the analysis of the imperial doctors, on the fifth day, Keng felt very uncomfortable, after all, as emperors, most of them are confident, and now you want him to say that the previous drug test was not complete, and he was wrong to believe it!

"Actually told me that when the purple sand tile was newly fired, it was not toxic to wash it with water, this is not poisonous? No! Could it be that it was not washed with water at all?" Thinking that although the Hanging Temple does not directly operate this purple sand tile now, it also occupies a share, and the anger in Keng's heart is getting bigger and bigger on the fifth day!

...... "Fengtian carriers, the emperor edict ......"

With the actions of the imperial doctors, the matter of purple sand tile has spread all over the harem, and on the fifth day, Keng can only deal with the previous imperial doctors who have not fully tested the poison, especially those who have retired from the elderly and all of them have been imprisoned!

"Buddhism, Heavenly God Sect, Daomen, I originally wanted you to stand on three legs and contain each other, but I didn't expect to involve me as well!" On the night when the matter came to an end, on the fifth day, Keng finally made a decision, requiring strict investigation of the illegal trafficking of the Celestial God Sect, and at the same time directly issued an order to cancel all the supply and production of purple sand tiles! As for further punishment, it can only be made after consultation with the court!

......

When the palace is busy, different things are happening everywhere outside the palace, some good and some bad.

The palace of the fifth day of the congregation occupies a huge area, and the Yanhua City where the palace is located is also a large city in the world, the city wall is divided into the inner city and the outer city, the inner city is difficult for ordinary people to enter, this outer city, the height of the city wall alone is definitely more than the height of the city wall in Youzhou! The whole city wall is blue, because there is no devastation of war, there are almost no scars, the top of the city wall near the sky seems to be connected with the blue sky under the illumination of the sun, so every merchant who comes here says that Yanhua Capital is a green city that connects heaven and earth.

In the city, the inner city, the outer city, plus the forbidden army guarding the capital, there are three million people in the whole Yanhua City, and the minimum street can accommodate four horse-drawn carriages side by side, and the widest main road can accommodate nine rows of horse-drawn carriages side by side! There are countless vendors and stalls on both sides of the street, and goods from all over the country can be seen.

"How? Non-defeated, this Yanhua City, I have only come twice, and each time it is more and more lively!" Huo Qinglong, who closed "All Things in Martial Arts", was extremely satisfied, this purple sand tile matter, the opium matter finally broke out, but I don't know how much credit they can take in it.