The Duke and his wife found their second son's words reasonable, so they didn't come over. They had previously encountered many swindlers, and their son's illness had not only failed to improve but had worsened.

When the Duchess saw the servant boy approaching her son, she asked impatiently, "Sixth son, how is it? What did the divine doctor say?"

"The divine physician requests that the Duke and his wife come over."

The lady and the duke exchanged a glance, then immediately nodded and said, "Alright, alright, alright, we'll go right now."

Walking to her son's courtyard, the Duchess couldn't help but ask her husband, "My lord, do you think Zhiye's illness can be cured?"

"Don't worry, Madam, he'll definitely get better. The name of the Divine Physician Wuxin is very famous in the martial arts world. It is said that he is not only skilled in medicine, but also in poisons. Ye'er's illness has not improved, and I suspect that it is not an illness, but more likely that he has been poisoned."

"No way? How could Zhiye, who was perfectly healthy, be poisoned?"

"I don't understand it either, that's why I haven't said anything. But let's see what the miracle doctor has to say later."

"Alright, let's hurry up and go."

The couple quickly arrived at their son's yard and, upon seeing Yunzhi, immediately asked, "Miracle Doctor, how is my son's illness?"

"Greetings, Duke, and Madam." After exchanging greetings, Yunzhi replied, "Madam, your son is not ill, but poisoned, and it is a rare, chronic poison."

"My son has indeed been poisoned?"

Upon hearing this, Yunzhi looked at the Duke of Qin with some surprise and asked, "Does the Duke know that the young master has been poisoned?"

"No, I am merely guessing."

Yunzhi, hearing that he was guessing, did not ask any further questions, but looked at the two of them and said, "Young master, this poison has been administered for at least three years."

"What? My son was poisoned after so long?" The Duchess was shocked. Three years! That's a long time.

“Yes!” Yunzhi nodded and explained, “The poison was administered little by little. It only takes effect when a certain amount is reached, which is what you perceive as illness.”

Upon hearing this, the Duchess looked at her husband and asked, "Divine Physician, is there any cure for my son's poison?"

“Of course there are. However, I think Madam should thoroughly investigate the manor first, otherwise even if the poison is cured this time, your son may be poisoned by other poisons next time.”

"Judging from what the divine physician is saying, the murderer is someone from my household?" Duke Qin was somewhat surprised. He had always thought that his son's poisoning was done by someone outside, but now Yunzhi had asked his wife to investigate the household, which was certainly not just empty talk.

Sure enough, Yunzhi replied, "This poison must be administered every ten days, whether it's in the young master's food or tea. Therefore, it must be someone from within the manor; otherwise, someone outside wouldn't be able to control the timing and dosage."

"I see. Don't worry, Doctor, I will thoroughly investigate your household. But for now, please help my son detoxify."

“No problem.” Yunzhi nodded, then took out silver needles from her medicine box.

However, when she was about to give Qin Zhiye acupuncture, she noticed that Qin Zhiming had left sometime earlier, so she couldn't help but ask, "Why did the Second Young Master leave?"

"I guess something urgent has happened."

"Really? You're in a real hurry." Yunzhi deliberately emphasized the words, hoping the two people in front of her would understand her implication.

However, the two seemed not to understand, and Yunzhi did not say anything more.