The sachet of asarum on the maid Xiaoshuang's body and the rock sand grass in the medicine she brought all proved that Ning Huan was right.

Before Madam Wan could speak, Master Wan asked with a livid face, "Xiao Shuang, Madam and I have always treated you well, why are you treating Madam like this!"

Xiao Shuang simply lowered her head and remained silent. Ning Huan looked at the soup bowl thoughtfully and said, "I'm afraid the one who truly wants to harm Madam isn't Xiao Shuang; she's just a blunt knife."

Upon hearing this, Xiaoshuang's face turned deathly pale.

Seeing that Xiaoshuang still didn't say anything, Madam Wan narrowed her eyes. As the mistress of the Wan family, she certainly wouldn't be able to sit still if she didn't have some tricks up her sleeve.

"Xiaoshuang, I remember your parents wrote in a letter they sent you a long time ago that you had a younger brother, right?"

With just those words, Xiaoshuang collapsed to the ground, shaking her head frantically and crying, "Madam, Master, Xiaoshuang didn't want this to happen either. It's..."

Master Wan asked, "Who is it?"

"It was Fourth Madam! She made me do it all!"

Ning Huan was not surprised, but Madam Wan was momentarily stunned, probably because she did not expect that her sister, with whom she had always been close, was the one who wanted to harm her the most.

Madam Wan gave a wink to the two maids who were restraining Xiao Shuang, and they quickly walked out.

It's obvious they're going to search for evidence at Fourth Madam's place and then keep an eye on her.

After finding out who poisoned him, the most important thing is to find out if there is any way to recover.

Madam Wan recalled the silver needles Ning Huan had put into the soup earlier and said with a wry smile, "Madam Ning, I have a very good relationship with the Fourth Madam. Years ago, not long after she entered the mansion, she started brewing medicinal soup for me every day."

"She said they were all tonics, used to nourish and strengthen the body, and that I could throw them away if I didn't like them. Later, I saw a doctor, and the herbal soup was indeed fine. I also appreciated her kindness..."

“She would personally brew me herbal medicine several times a month, and I’ve been drinking it for six or seven years.”

Madam Wan touched her lower abdomen thoughtfully: "Madam Physician, is my body completely infertile?"

Seeing Madam Wan's distressed state, Master Wan was both angry and heartbroken. He quickly comforted her, saying, "Madam, even if you can't have children, I will take care of you for the rest of my life. Don't worry, even if the Wan family line ends, I will not have children with another woman."

Ning Huan raised an eyebrow, not expecting Master Wan to say such a thing.

Seeing the Wan couple embracing, Ning Huan coughed somewhat inappropriately: "Madam Wan and Master Wan, don't worry, I have a way to cure Madam Wan's illness."

Madam Wan asked in surprise, "Really?"

Ning Huan nodded: "Although it can be cured, it will take some time because the cold poison has been invading the lady's body for too long."

Madam Wan was right. The severity of this cold poison was no less than that of taking a large amount of musk, and there was probably no cure in this world.

However, Ning Huan had antidote pills and red fire grass in her consciousness space. She mixed them together and ate them. Then, she would take a bath with some warm medicinal herbs, and she should recover in no time.

Ning Huan nodded: "I will write you a prescription. Have the maid in the manor buy the herbs according to this prescription and soak them in the bath tub. Soak in the bath every three days, and the water must be hot."

"As for the pills and herbs you need to take, as long as you take them on time, your health will gradually recover."

Mrs. Wan breathed a sigh of relief. As long as the condition could be cured, she didn't mind if it took a little longer.

At this moment, Master Wan stammered and asked, "Um... Madam Physician, I've drunk quite a bit of the herbal soup that Fourth Madam has been brewing over the years, will it...?"

"What if my body can no longer have children...?"

Ning Huan hadn't thought of that. She asked Master Wan to extend his hand, and she took his pulse herself. His body was still normal.

"Mr. Wan, don't worry, you are still capable of having children normally. However, as I told you last time, you should control your diet. Being too obese now can cause many health problems."

Upon hearing that he could still have children, Master Wan was overjoyed and didn't hear Ning Huan's subsequent instructions.

Mrs. Wan was overjoyed to have resolved the long-standing grudge between the Wan couple. She had originally intended to give Ning Huan a jade bracelet of excellent quality.

But Master Wan reminded her that compared to such jewelry, the female doctor probably preferred the practicality of real gold and silver.

Madam Wan was immediately embarrassed. Having spent so much time in the grand mansion, she had unconsciously taken out these items.

"I'm so sorry, Madam Ning. I was short-sighted to give you such a thing. You cured my illness that had plagued me for so many years and even exposed the villains around me."

"Even gold and silver cannot express my gratitude to Lady Ninghuan, so perhaps..."

Madam Wan paused for a moment, then said, "If you don't mind, I would like to recognize Madam Ning as my sworn sister. If you encounter any problems in the future, just come to me."

The Wan family was one of the wealthiest households in the town, and the title of "Madam Wan's sister" was something that many ladies and young women in the town longed for.

Ning Huan quickly agreed: "Madam is too kind as to recognize me as your sister, so of course I have no reason to refuse."

Today at the Wan residence, Ning Huan not only received real gold and silver, but also became sworn sisters with Madam Wan. It was truly a worthwhile trip.

As Ning Huan was leaving, she passed by the Fourth Madam's room and saw two maids supporting her as they walked towards the back garden.

"Master! Madam! I'm innocent!"

The fourth madam cried out hoarsely, "It was all that wretched girl Xiao Shuang who framed me, Madam! Master!"

Just moments before, there had been laughter and chatter from women as they entered, but now it was eerily quiet, with only the Fourth Madam's shrill screams audible.

Some of the concubines in this household saw it clearly: no matter how many concubines Master Wan took, the position of his first wife in his heart never changed.

After all, Mr. Wan and Mrs. Wan have been together for so many years, weathering storms together, so their feelings for each other are naturally deeper than those who share joys.

Some concubines fail to see this point and often lose their sense of propriety because the master visits them more often, starting to ridicule and mock the first wife.

In the end, they were all either sent away by their wives or sold to slave traders after the master found out.

Some women might accept this outcome and live separate lives from the first wife. Others might understand but be resentful, and secretly do bad things.