On the same day that Lu Bu and Cao Jiangxian recognized each other, Diao Chan had also set off under the escort of Xu Ba and Xue Meng and rushed to the small city where Lu Bu was.

Bao Zheng didn't delve into the matter of Diao Chan, so he must have the title of this horse master who is not easy to mess with.

As for Yan Xizheng, he didn't cause too much damage to Diao Chan, and he didn't have time to pay attention to it anymore. Because he received a secret order from the emperor, asking him to find out the real culprit behind the poisoning of Concubine Liu as soon as possible.

Bao Zheng had to temporarily put down a few cases in his hand.

First of all, he invited You Bi, the imperial doctor who treated Concubine Liu that day, to Kaifeng Mansion.

Bao Zheng was dressed in casual clothes and waited for You Bi in his study.

This You Bi is already in his sixties, his spirit is very strong, and his thinking is very clear.

Without waiting for Master Bao to speak, You Bi had already told him what he had encountered that day.

"As Imperial Physician You said, the concubine Niangniang was poisoned, and it was only because of the timely treatment that her life was saved, so can Imperial Physician You determine what kind of poison this is?" Bao Zheng asked.

"When the villain was treating the concubine, he deliberately collected the concubine's vomit to verify the villain's speculation." You Bi replied.

"Doctor You is really as delicate as silk." Mr. Bao gave a thumbs up.

You Bi leaned forward.

"According to the villain's judgment, this medicine is definitely not something that can be bought in my capital."

Bao Zheng was stunned and seemed to see a glimmer of hope.

"Doctor You is quick to speak."

"The villain of this medicine has never seen its true face, but he has only seen the illustration of this medicine in an ancient book." You Bi said, "The name of this medicine is called Zisu, and the common people are commonly known as dragon whiskers, because it grows three feet below the ground, it is extremely difficult to find, so even some people in the pharmacy have never heard of it." ”

Master Bao was aroused.

"In this way, the person who took the medicine must have a deep understanding of pharmacology before he found this kind of medicine?"

You Bi nodded repeatedly.

"It's just that a little bit of the villain is puzzled." You Bi continued, "According to ancient texts, this medicine has a bitter taste, and people with sensitive tongues will vomit when they enter it. Thinking that Concubine Liu only sits in the palace every day, and the things she eats must be carefully selected, and there is absolutely no reason for the slightest peculiar smell, how could she swallow such a bitter medicine without noticing? ”

Bao Zheng was shocked.

This Imperial Doctor You is really extraordinary, and he can think so carefully.

"What are the properties of this medicine?" Bao Zheng asked.

"Very fierce." You Bi replied, "According to the ancient books, it only takes half a foot long, chopped up, soaked in water, even if the person is strong, just one bite, and he will quickly die of poison." ”

Bao Zheng was thoughtful.

"Does Imperial Doctor You know that before this, did the concubine ever feel unwell?"

You Bi thought for a moment.

"Three days before the onset of the concubine's illness, I asked the villain to go, but the villain diagnosed that the concubine only occasionally felt a cold at that time, and there was no major problem. The villain just prescribed some ordinary drugs casually and asked the concubine to take them on time. ”

Bao Zheng suddenly smiled.

You Bi didn't know why this Lord Bao was laughing for a while.

"There is too much doctor Lao You, and the official already has a plan in his heart." Bao Zheng said.

"That being the case, the villain takes his leave." You Bi got up.

"Doctor You, please wait a moment." Bao Zheng said, "The official knows that Imperial Doctor You likes to drink tea, and the day before yesterday I received a high-quality new tea from a former friend, and the official drank it yesterday, and it tasted very good." Today, we should invite Dr. You to drink this tea together to express our gratitude. ”

This You Bi really likes to drink tea very much, and when he heard that Master Bao actually had new tea that had just been picked, he was naturally very happy, so he sat down again.

Lord Bao personally went to the back of the government and instructed the maid to make tea.

About half a burnt incense time, the maid came to the study with a pot of tea in her hand.

When the lid of the teapot was opened, a fresh aroma of tea instantly filled the entire study.

You Bi couldn't help twitching his nose a few times.

"Master Bao's tea is fragrant and pleasant, you don't need to drink it, you can already feel the strong aroma."

Bao Zheng also twitched his huge nose and looked very intoxicated.

This You Bi is really a master of tea tasting, and after only a few sips, he has already told the origin of this tea, as well as the time of picking, and even the simple production process is extremely well understood.

"That's all?" Bao Zheng looked at You Bi and suddenly asked.

You Bi didn't understand what Master Bao meant.

"What else does Master Bao want to know?"

Master Bao suddenly laughed, walked a few steps in the study with his hands behind his back, and then, turned around, stared at You Bi, and said unhurriedly, "A smart person like Imperial Doctor You, and he is so through the tea ceremony, can he also be deceived by this official?" Not only did he taste the many wonders of this tea, but he never tasted that the official added some condiments to the tea. ”

You Bi was shocked.

"What did Master Bao put in the tea, could it be that he wanted to poison the villain?"

Master Bao sat back beside You Bi unhurriedly.

"The official placed a few pieces of flat grass in the tea, intending to test whether Imperial Doctor You could taste its bitterness."

Hearing that it was just a non-poisonous flat grass, You Bi's nervous mood relaxed.

"What does Master Bao mean?"

Bao Zheng smiled and said nothing.

"What do you mean by ......" Seeing that Bao Zheng didn't seem to want to explain, You Bi asked again.

Bao Zheng smiled at this time, "Doctor You just said that the poison that Concubine Liu ate is Zisu, this medicine has a bitter taste, and she vomits when she enters it, but Concubine Liu doesn't notice it. Just like the tea drunk by the Tai Doctor, the flat Dan grass tastes bitter, but the Tai Yi did not taste it. It's all because the imperial doctor trusts the official and has no precautions. ”

You Bi's eyes widened, he groaned slightly, and then raised a big finger.

"Lord Bao really knows everything, and the villain admires it." Then, he thought about it for a while, "According to Lord Bao's opinion, this poisoned person must be the person that Concubine Liu trusts very much." ”

Bao Zheng nodded.

"Imperial Physician You often enters the palace to diagnose the people of the harem, when do you know how many palace maids there are around Concubine Liu, and which one often accompanies her?"

"This ......," You Bi pondered for a long time, "although the villain often goes to the palace for medical treatment, he doesn't care about the palace maids. It's just that when the concubine was poisoned last time, there was a palace maid named Jifeng by her side, but I don't know if this person was someone from the concubine's side. ”

Bao Zheng muttered the name again.

"This official is ordered to investigate and handle this case, and I am afraid that I will have to trouble Imperial Doctor You in the future, and at that time, I also ask Imperial Doctor not to refuse."

"Don't worry, Lord Bao, the villain will be on call and at any time at your disposal." You Bi stood up and arched his hand and said.

After sending You Bi away, Lord Bao changed into an official uniform.

He shall go into the palace at once.

After talking with You Bi, Bao Zheng felt that the scope of investigation of this case had been narrowed a lot, and there must not be many people in the harem who understood pharmacology.

The first thing I want to find is the person who accompanies Concubine Liu, the palace maid named Jifeng, who may be the only person who knows about this case.

Just called Zhan Zhao and another errand officer, and was about to get up, suddenly, an errand officer ran in.

"Lord Qiqi, Chang Ning is waiting to see you outside the door."

Bao Zheng was stunned.

He immediately thought of Diao Chan, could it be that this dignified man really took the initiative to come to the door for such a woman?