A crown princess who doesn't do infrastructure construction isn't a good doctor.

After a moment of stunned silence, Prince An was the first to react.

"Do you know what you're saying!" she said, her voice agitated, her eyes sharp as she stared at Qin Suiyou.

Princess An couldn't hold back her sobs and said in a sharp, tearful voice, "Yan'er has been in a coma for months, and neither the imperial physicians nor Mr. Li have been able to do anything about it. Don't try to deceive us with your lies."

Mr. Li was the physician of Prince An's residence. Since neither he nor Prince An had revealed their specific names, only saying that their surname was Li, everyone in the residence called him Mr. Li.

Beitang Xinyue walked to Qin Suiyou's side, her eyes misty with tears as she stared at him. The twelve-year-old girl didn't think much of it. "Sister-in-law, do you really have a way? Please, sister-in-law, you must save brother. Those outsiders are secretly laughing at Yue'er for not having a brother. Yue'er is sad, but Yue'er doesn't believe that brother will never wake up again. When brother went north, he clearly promised Yue'er that he would come back safely..."

Seeing the little girl, who barely reached his chest, choking back tears and unable to speak, he felt a surge of tenderness as her older brother.

"Your face is all stained from crying; if you cry any more, you'll look even worse."

These words struck a nerve with the young girl. She was still very sad, but she forced back her tears. Then, feeling ashamed that she had cried in front of her beloved sister-in-law on their first meeting, she felt that she had ruined her image and hurriedly turned around to take out a handkerchief to wipe her face.

Actually, the little girl wasn't wearing makeup because she was still young, so her face didn't look ugly when she cried, but the tears streaming down her face were truly heartbreaking.

The Prince and his wife were deeply moved. In recent days, because of their eldest son who was unconscious and their premature youngest son, they had unconsciously neglected their usually sensible daughter and had not realized that she had suffered so many hurtful words.

Princess An looked at her daughter with heartache, feeling even more distressed. Prince An's expression also turned sour.

Qin Suiyou was helpless, but the situation was not unexpected.

"Suiyou is confident in his medical skills to say such things. If he lies and fails to wake the prince safely, I am in the palace, and Father can do whatever he wants with me."

Prince An originally thought that Qin Suiyou's claim of being able to cure someone meant that he knew some kind of divine doctor or possessed some kind of miraculous medicine, but he did not expect that he was referring to his own medical skills.

He rubbed his fingers together, his tone becoming calm, "The specific details of Yan'er's injury haven't been released, so how can you be so sure you can heal her? Even if you have some unique method, how much do you really know about Yan'er's injury?"

Qin Suiyou said, "To be honest, I visited the young prince last night. His injuries have healed very well. The reason he hasn't woken up is because he suffered a head injury that left a blood clot. It will be difficult for the young prince to wake up until the blood clot dissipates."

They knew the distribution of the guards in the Prince's mansion. Although they had said that Qin Suiyou didn't need to take care of them, they hadn't forcibly ordered him not to go. So they didn't have much of a reaction to his visit last night.

Hearing that Qin Suiyou's words were exactly the same as Mr. Li's, the mother and daughter beside them felt hopeful. However, Prince An remained clear-headed and said, "Even ordinary doctors in the city, as long as they have a good reputation, can see Yan'er's condition, but they still can't cure her. What you said doesn't mean anything."

Upon hearing this, Qin Suiyou calmly said, "The little prince was born prematurely, partly due to congenital deficiencies, and partly due to his mother's emotional fluctuations. But as you should know, the remaining reason is poisoning."

Prince An clenched his fist tightly. "How do you know that?"

"When I was fastening the safety buckle for the little prince just now, I casually took his pulse. This poison is called the Ghost Mother Gu. It was originally intended to kill the little prince without anyone knowing, without harming the mother. If it had succeeded, people would have thought that the little prince was unlucky. Now the little prince is fortunate to have survived, but most of the toxins have accumulated in his body."

Qin Suiyou spoke casually, yet he gleaned so much information simply from tying a safety buckle—something no ordinary doctor could accomplish.

"Fortunately, Mr. Li's medical skills are quite good, and he is also willing to use strong medicine. The toxins have been suppressed, but if it is not treated soon, the little prince's already congenitally weak body will never recover, and it will also affect his lifespan in the future."

Prince An was so preoccupied with his own worries that he didn't notice the familiarity between Qin Suiyou and Mr. Li in their conversation. Everything he said was exactly the same as what Mr. Li had said! He must have a solution!

Before Prince An could say anything, Princess An, who was already anxious, rushed to Qin Suiyou and tightly grasped his arm with both hands, as if she wanted to hold onto the last straw.

"Suiyou, you found out about all this so quickly, you must have a way, right? I beg you, you must save my two children. I'll give you anything you want..."

“Mother…” Beitang Xinyue looked at Princess An with concern, not knowing what to say.

Princess An suddenly remembered something, "Oh, right, I know you're unhappy with this marriage. Afterwards, I'll have Yan'er with you..."

"Mother concubine."

Startled by Princess An's sudden behavior, Qin Suiyou quickly understood what she meant and immediately interrupted her gently. He did not want Princess An to decide the outcome of the marriage so soon.

"Whether it's the Crown Prince or the Young Prince, I'm very confident. However, nothing is absolute in medicine. I won't make empty promises or deceive you, but I will do my best."

“My family suffered a disaster and I went to live with my uncle. My uncle and aunt treated me well, but I was always uneasy living under their roof. Now, because of my marriage to the prince, I have a sense of belonging. If only…”

Qin Suiyou spoke earnestly, leaving half of his words for others to ponder.

The effect of leaving things unsaid was still significant. Princess An looked at her with heartache, fearing that Qin Suiyou might misunderstand and think she wanted to send him away, so she hurriedly explained, "Then I won't mention it again, child, don't misunderstand, your mother didn't mean that..."

Qin Suiyou said with feigned strength, "It's okay, I'm very content now."

This made Princess An feel even more guilty, and even Prince An gave him a comforting look. Beitang Xinyue even said, "Don't worry, sister-in-law. If my brother gets better in the future, I will definitely make sure he treats you well."

"So, can you believe I can cure the Crown Prince?"

"This..." Looking at Qin Suiyou's youthful face, Princess An hesitated. "Child, to tell you the truth, it's not that we don't want to believe you, but you are too young, and Yan'er's injury is no small matter..."

“I can have Mr. Li assist me, and if anything goes wrong, Mr. Li can stop me at any time.”

These words surprised even Prince An. Nowadays, one must become an apprentice to learn traditional Chinese medicine, and some doctors even hold back some knowledge when teaching. Not to mention, if there were a miraculous method to cure Beitang Yan's injury, it would not be allowed to be learned by outsiders. Qin Suiyou's decision to have Mr. Li assist him would undoubtedly allow his method to be revealed to Mr. Li.

Mr. Li was on good terms with him, so this method was a disguised way of taking away his hard-earned results. Prince An would not do such a thing, but if Qin Suiyou really had a way, he did not want to miss the opportunity to help his son get better.

So Prince An said, “We have wronged you this time, child. From now on, you will be the greatest benefactor of my Prince An’s Mansion. Whether you want it or not, I, Beitang Ze, promise that whatever you ask for, as long as it is not illegal or disorderly, I will grant it to you.”

Princess An shed tears again and nodded to Qin Suiyou in affirmation of Prince An's words. Beitang Xinyue didn't know what to say, so she could only nod as well.

……

After the group calmed down, they sat down amicably to discuss treating the brothers' illnesses and injuries. But before they could say much, Udumbara rushed in.

"Your Highness and Your Highness, something terrible has happened! The little prince has suddenly developed a fever, but Mr. Li has gone out to gather herbs and has not yet returned!"

Princess An was shocked. "Then hurry and fetch a doctor from outside the manor! Why are you still here..."

"Wait a minute."

Udumbara's step outward was broken by Prince An.

"Your Highness, what is this...?" Princess An was puzzled, her voice filled with barely suppressed anger.

Prince An gestured to his wife to calm down, then looked at Qin Suiyou, "Bringing the doctor back from outside the mansion will inevitably take time, Suiyou, could you..."

Qin Suiyou understood that Prince An wanted to test his abilities. The child was still so young, so this move was undoubtedly a gamble for Prince An.

So Qin Suiyou replied, "I'll go see the little prince right now."

Just now, when Granny Ye took the little prince Beitang Rui, who had already drunk his fill of milk, to his sleeping room, which was the side room next to the bedroom of Prince An and his wife, she was about to coax him to sleep when Beitang Rui vomited milk and then started crying.

The baby's voice was not fully developed, and the congenital deficiency combined with the weakness caused by poisoning made Beitang Yan's cries even softer, like a kitten, which was heartbreaking. Not to mention, Granny Ye also noticed that the baby's body temperature was rising rapidly, and his little face was extremely red.

When Qin Suiyou and the others arrived, Granny Ye had already cleaned up the mess and was anxiously wiping Beitang Rui's face on the small couch with a wet handkerchief. Hearing footsteps, she thought it was the doctor and hurriedly got up to make room for him, but instead saw Qin Suiyou.

"This is……"

Pulling back Granny Ye, Princess An whispered in her ear, "He is Yan'er's hope."

Despite the seemingly random words, Granny Ye understood them. Seeing that Prince An, who was nearby and could hear them, did not refute her, her eyes were full of disbelief. However, she knew that neither of them were the type to act recklessly, so she had no choice but to suppress her uneasy thoughts.

Prince An and his wife were not usually reckless, but these days had almost exhausted them. Now that they had met someone who could bring them hope, they had to seize that hope without hesitation, even if it meant taking a huge gamble. They could only hope that Qin Suiyou would be the one to turn the tide.

After a thorough and gentle examination, Qin Suiyou first massaged several acupoints to make Beitang Rui feel more comfortable and stop crying. Then, he asked Granny Ye some questions and determined the cause of the problem.

She took out a small porcelain bottle from her crossbody bag. "Please pour some warm water, Granny Ye. Just a third of that in the small teacup will do."

Granny Ye hesitated for a moment, but seeing that Prince An nodded, she still went to pour the water as requested.

Qin Suiyou didn't take the cup; he simply put the small pill into the water, and it dissolved without even shaking the cup.

"I'm inexperienced and don't know how to do it, so let's have the nanny feed him the medicine."

"it is good."

Granny Ye readily agreed, but she was still a little worried when she picked up Beitang Rui to feed him the medicine, fearing that the child would not be able to stand the taste and would not be able to drink it. Unexpectedly, as soon as the medicine was poured into his lips, Beitang Rui stuck out his little tongue and licked it, so the whole process went surprisingly smoothly.

The others were somewhat surprised to see this. Beitang Rui had been taking medicine since birth. Although he was young and weak, it was also difficult for them to be firm when feeding him medicine, which made them all work hard. Now, seeing Beitang Rui drinking the medicine on his own as if he were drinking milk, they were surprised and happy.

"Sister-in-law, is there something special about this medicine that makes Rui Rui so happy? And how did you calm Rui Rui down just now?"

When Beitang Rui quickly stopped crying under Qin Suiyou's comforting words, Prince An and his wife were also surprised. However, they were afraid that it was some kind of secret method that was not to be shared with outsiders and were too embarrassed to ask. Beitang Xinyue did not think so much. She had also drunk medicine that was difficult to swallow when she had a cold before. She felt sorry for her younger brother who always had difficulty being fed medicine. She wondered if Qin Suiyou had any way to make the medicine taste better and to soothe the child.

Qin Suiyou replied with a smile, "The method is not difficult, but you need to select some herbs that do not clash with the original medicinal materials and put them in. The proportions must be well controlled. As for soothing, it is about properly massaging acupoints. If I explain it to you now, you will be confused. If Xinyue is interested in medicine, I can teach you."

"Ah! Ugh—"

Beitang Xinyue almost cried out in surprise, but thinking of her younger brother who had fallen asleep after drinking the medicine, she covered her mouth.

Princess An poked her impetuous daughter's forehead and asked, "Why did Rui'er suddenly develop a fever?"

"The little prince is weak, which makes his self-regulation slow, and his special constitution makes him highly resistant to drugs. The medicine that Mr. Li prescribed before probably had no effect, which is why he suddenly developed a fever. The Rejuvenating Pill that I just gave him was one that I prepared myself. It was at its most effective time for him. He can take another pill in three days, which will keep him from having a fever for six months. That should be enough for me to find a way to completely cure him. Now he needs to rest well. Let's go out first."

Except for Princess An, her maid You Tan, and Granny Ye, who stayed behind, everyone else returned to the small hall after hearing Qin Suiyou's words.

"Sister-in-law, are you really going to teach me your medical skills?"

Beitang Xinyue really wanted to learn medicine, but Mr. Li was most engrossed in medical research and was unwilling to take on apprentices. Moreover, there were not many capable female doctors in Yejing. The other male doctors not only had to be careful about the separation of men and women, but they were also unwilling to take on a noblewoman as an apprentice and have a relationship with a nobleman that was not just between doctor and patient. It was even more impossible for her to study medicine with the Imperial Medical Academy, as it was suspected of currying favor with the emperor and his important ministers.

Hearing Qin Suiyou say he was willing to pass on his medical skills to her, even though she didn't know the extent of his knowledge, Beitang Xinyue couldn't help but get excited. She couldn't wait to ask as soon as she stepped into the small hall.

Before anyone could answer, she added, "If we really become your disciples, won't our family hierarchy be messed up?"

Qin Suiyou was both amused and exasperated: "How could the seniority be messed up? Although I will pass on my medical skills to you, you should just treat me as your instructor. I am determined to carry forward my medical skills, and the complicated process of taking on disciples is too troublesome for me."

The Northern Qian people place great importance on the etiquette of apprenticeship, and the relationship and responsibilities between master and apprentice are no less than those between parents and children. Under such circumstances, it is easy for the skills to stagnate or even be lost.

Beitang Xinyue wanted to say something more, but Qin Suiyou's words stopped her.

"If you really want to learn from me, then our relationship can remain as normal. Otherwise, I might change my mind."

"No, sister-in-law, I'm just worried you'll suffer a loss," Beitang Xinyue said coquettishly. "Now that I've said this much, you can't go back on your word."

"Cough cough."

Prince An spoke up from the side, "Suiyou, Yue'er has been longing to learn medicine for a long time. Your demonstration just now proved your ability to us, so I have no choice but to swallow my pride and hope that you can teach this girl a thing or two."

Qin Suiyou nodded, "Father, you don't need to be so polite. Xinyue is now my sister, and the little prince is my brother. I'm happy to be able to help them."

Prince An smiled with satisfaction, "You child, you really have a sincere heart, but if you treat Rui'er as your younger brother, you can't call him Little Prince anymore. We're all family, so don't be polite to the younger one alone."

Beitang Xinyue echoed, "Yes, yes, sister-in-law, just call your brother Rui Rui, just like me."

The three were chatting happily when a middle-aged man, dressed much better than the average servant, knocked on the door.

The middle-aged man was named Gao Xiang. He was Prince An's capable attendant and the second steward of the Prince's mansion. The reason he did not accompany Prince An this morning was that he was leading people to deal with the unfinished matters after yesterday's wedding. Now that he had finished dealing with them, he came to report back.

After all the matters had been reported, Prince An told Qin Suiyou, "This is the second steward of the manor. The head steward is that old nanny Ye from earlier. Now, nanny Ye is focused on taking care of Rui'er, and most of the affairs of the manor have been handed over to Gao Xiang. You can ask him for anything."

After saying that, he instructed Gao Xiang: "From now on, you must pay close attention to the affairs of the Crown Prince and the Righteous Prince, and you must not be negligent."

"Yes."

Then, Gao Xiang didn't miss another matter: "Your Highness, Mr. Li has just returned. He heard about what happened in the manor and would like to come and see the Emperor."

Gao Xiang was busy in the front yard early in the morning and didn't have time to know what was happening in the back yard, but after hearing what Mr. Li said, he immediately asked the servants in the back yard to get a general idea.

Upon hearing this, Prince An looked at Qin Suiyou questioningly.

Qin Suiyou nodded, "I also want to meet this Mr. Li as soon as possible."

Prince An immediately sent Gao Xiang to invite Mr. Li over.

After Gao Xiang led Mr. Li to the small hall of Shian Courtyard as instructed, he withdrew.

Upon seeing the person enter, Qin Suiyou revealed a meaningful smile.