When Zheng Yuyi heard that Concubine Lin had died, he was very afraid that he would be implicated, so he quickly explained:

"Your Majesty, I am not sure whether this prescription is effective, but it is definitely not a drug-drug conflict! It will definitely not cause any illness."

He was one of the imperial doctors who often came to check Concubine Lin's pulse when she was pregnant.

Therefore, he became familiar with Concubine Lin.

Concubine Lin secretly gave him a large sum of money and asked him to buy a prescription for giving birth to a son...

Imperial Physician Zheng didn't know whether she could give birth to a son, but there were many folk remedies, so in order to get the money, he just wrote her a harmless prescription.

There will be no problem in keeping it...

Wu Mi threw the packet of medicine in front of him and said, "How poor are your medical skills? Don't you know that these two medicines counteract each other?"

Imperial Physician Zheng reached out and grabbed a handful of herbs from the medicine bag. After identifying them for a moment, he quickly said, "There's an extra medicine. This is not my prescription... No, no, no, this is my prescription, but there's an extra medicine, an extra medicine that counteracts it..."

"My Lady, the prescription I originally gave her is truly harmless. I have also prescribed this prescription to Wang Zhaoyi before... If you go and take a look at Wang Zhaoyi's medicine, you will know that there is indeed an extra medicine..."

"I would rather die than give you a drug that is incompatible with your master..."

Ning Wanyin's eyes darkened slightly, "Send someone to invite Wang Zhaoyi to come."

Soon, Pengqi came with Wang Zhaoyi, and brought a bag of medicine found in her palace, which he gave to the imperial physician for identification.

Indeed, compared with Lin Jieyu's package of medicine, there is one more medicinal ingredient.

Ning Wanyin looked at Lin Jieyu's palace servants and asked, "Does anyone know what this medicine is about?"

All the palace servants shook their heads in horror.

Not every palace servant was so careful and capable of identifying the medicinal materials carefully, and no one noticed that there was an extra drug among the medicinal materials.

Since Concubine Lin drank the fertility potion secretly, it was impossible for her to cook the medicine and then ask the imperial physician to test it.

Wu Mi carefully examined all the palace servants serving Concubine Lin, but did not find anyone suspicious.

Finally, report to Ning Wanyin:

"Your Majesty, I have questioned the palace servants who serve Concubine Lin, but have not found anything yet. But I have an idea. If someone wants to attack Concubine Lin and add one more herb from her medicine bag, they must at least know what the prescription is first."

"Imperial Physician Zheng said that he had newly drafted this prescription. The only people who had asked him for the prescription, besides Concubine Lin, were Concubine Wang."

It is quite normal for women in the palace to hope to get pregnant, give birth to children and gain promotion.

Not only Wang Zhaoyi, but many people, whether new or old, secretly asked the imperial physician for a secret recipe for having a child...

It just so happened that they both went to see Imperial Physician Zheng, the only ones there.

Wu Mi analyzed it carefully and deduced from the incompatible drugs that only those who knew the prescription could start...

He analyzed it carefully again and felt that Wang Zhaoyi had a strong motive for committing the crime!

Concubine Lin has a princess. Some time ago, the concubines in the harem were restless, and many people secretly hoped that they could become the next Concubine Rou.

I didn't expect that His Majesty would raise the third princess under the care of her biological mother.

If Concubine Lin died, Your Majesty would have the opportunity to choose one of the several Zhaoyi to raise the princess.

Although it is not certain that the child will be given to Wang Zhaoyi, she has no hope unless Lin Jieyu is crazy. Only if Lin Jieyu is crazy and can't raise the child, she will think of a way and ask someone to intercede for her. Who knows, the child may really fall into her hands.

If you take a chance, it is the main position of the first palace. It is enough to make people take risks.

Ning Wanyin nodded slightly, "What Eunuch Wu said is indeed possible. Since they started with the prescription, it must be someone who knows the prescription. So, check whether Wang Zhaoyi and her palace maids have had any contact with Lin Jieyu and her palace maids in the past half month."

Wu Mi obeyed the order. According to the usual rough investigation method of the Criminal Court, if the master is suspected, the palace servants will be sent to torture...

Although it was simple and brutal, most palace people would confess upon seeing the punishment.

Torture is inhumane, but it works. Of course, there are cases of unjust confessions under torture. But unless it involves the heir to the throne, for ordinary cases, only one result is enough.

However, Ning Wanyin was cautious in using torture. Without direct evidence, she would not use torture but would investigate first.

Following his master's orders, Wu Mi naturally stopped torturing the suspect and went to investigate first.

"In addition to Wang Zhaoyi, also check Imperial Physician Zheng and the medicine boy who prepares the medicine." Ning Wanyin added.

Wu Mi was stunned. "They won't seek death themselves, right?"

If something goes wrong while taking the medicine, both Imperial Physician Zheng and the boy who prepared the medicine are to blame.

"Check whether they have ever mentioned this prescription to anyone else, and find out who else knows this prescription." Ning Wanyin said calmly:

"Go check these people again and see if anyone has had contact with Concubine Lin and her palace maids in the past half month."

Wu Mi suddenly realized that it was indeed his negligence.

Imperial Physician Zheng and the medicine boy would not be stupid enough to poison someone with their real name, but it is possible that they accidentally leaked the information to others.

So layer by layer...

The eunuchs of the Criminal Justice Department all became busy.

…

"Master, Concubine Lin is dead!" the maid reported in a low voice.

Mo Zhaoyi was surprised and asked, "How did he die?"

The drug can make people lose their minds and have hallucinations. She thought that Concubine Lin had gone crazy, and the third princess must be raised by someone else.

"Jieyu Lin fell into the water..." The maid reported the whole story and said:

"The Criminal Justice Department is currently tracking down the murderer and has invited Wang Zhaoyi to come..."

Mo Zhaoyi felt relieved because she knew that only Concubine Lin and Concubine Wang knew the prescription, so she started with the prescription.

If anything happens to Concubine Lin, the Criminal Justice Department will definitely trace it back to Concubine Wang.

Then she can clear herself of the matter.

"I guess Wang Zhaoyi's palace maids have all been sent to the Criminal Court. There will always be people who can't stand the punishment and confess..." Mo Zhaoyi is already very familiar with the trial process in the harem, and said:

"I didn't expect that Concubine Lin died, but it's not serious. The case should be closed soon."

She didn't originally intend to cause a death, because murder cases would be investigated in more detail than ordinary cases.

But as long as Wang Zhaoyi can be found, the case will almost be closed.

Now, Your Majesty should prepare to arrange for concubines to raise the third princess.

I have to secretly go and pay a visit to the Empress Dowager and take a walk around.

As Mo Zhaoyi was thinking this in her heart, the eunuch guarding the door came in hurriedly and said, "My master, something bad has happened. Someone from the Criminal Justice Department is here!"

Mo Zhaoyi was shocked. How did they get to this point?

It shouldn't be.

The next moment, Wu Mi and a group of people rushed in and said grimly:

"Please ask the maidservant Sha'er beside Zhaoyi to come with me."

A look of panic instantly appeared on the face of the palace maid Shaer.

"I wonder what my maid has done wrong?" Mo Zhaoyi asked, suppressing her panic.

Wu Mi said, "Suspected of murdering Concubine Lin."