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

After seeing that Beitang Xinyue was "armed", Du Ruo wiped the blood around Yun Ying's wound and slightly tilted her head to indicate this.

"You stand next to me."

After Beitang Xinyue did as instructed, Du Ruo said gently, "Clean the area around the wound beforehand to make it easier to see the changes during the operation. Next, because there is a barb on the back of the arrowhead, I will use a scalpel to widen the wound so that the arrowhead can be removed within our control."

Beitang Xinyue, who hadn't learned these things yet, still felt a little tremble. The thought of widening the already gruesome wound made her subconsciously ask, "Can't we just pull it out?"

Du Ruo understood the mindset of someone who had just started learning medicine and was unfamiliar with these things, so she patiently explained, "If we pull it out directly, we don't know the exact location of the arrowhead's barb inside her body, nor do we know if that barb will snag a vein that could easily cause her to bleed heavily. If her injury were deeper today, we would also need to determine whether any organs have been damaged. If the wound is not expanded within a reasonable and controllable range, pulling out the arrowhead directly could easily cause unnecessary or even harmful secondary damage to her."

Beitang Xinyue was a girl who listened to advice, so she didn't raise any more objections. She had only been worried about Yunying before.

By the time Du Ruo finished explaining to Beitang Xinyue, she had already taken the scalpel into her hand.

"The silver needles with sun-dried oil around the wound have stopped the bleeding, but there will still be some blood when I make the incision, but not much. You are responsible for using tweezers to hold a cotton ball and wipe it away. Remember not to get too close to where I'm going to make the incision, and be gentle."

Beitang Xinyue nodded, "Okay."

Immediately afterwards, Du Ruo began to make steady cuts.

"Sister Du Ruo, do we need anesthesia for this?"

Beitang Xinyue remembered that Qin Suiyou had previously mentioned some of the procedures he performed on Beitang Yan and extracted Chen Xiaodong's tooth, all of which involved anesthesia.

Du Ruo replied softly, "The skin and flesh within the area where the silver needle stops the bleeding will not feel anything for a short time, so there is no need to administer anesthesia again."

Then Beitang Xinyue couldn't help but exclaim softly, "Why is this blood still black?"

"Young Master's silver needles have locked the poison within this area. Don't worry, it's a good thing that the poison is flowing out with the blood."

After saying that, seeing how carefully Beitang Xinyue was wiping, Du Ruo said gently, "You don't need to be too gentle, otherwise it will be very slow to wipe."

Upon hearing this, Beitang Xinyue nodded apologetically.

"I understand."

As she watched Du Ruo methodically make her incision, Bei Tang Xin Yue initially felt a subconscious fear of the cuts being made on Yun Ying's back. However, seeing Du Ruo's expression, she recalled Qin Sui You's determination when he asked her several times if she could persevere in studying medicine. Gradually, that fear dissipated.

Afterwards, while listening to Du Ruo's words, wiping away the blood that flowed down, or handing her tools, Bei Tang Xin Yue carefully observed Du Ruo's techniques throughout the process and secretly memorized them.

For a moment, the room was very quiet, with only the faint sounds of people treating injuries on both sides.

After dealing with the guard first, Li Yuanyuan looked at Qin Suiyou sitting to the side and said, "Teacher, the poison they were given seems to be a kind of snake king poison made from the venom of various highly venomous snakes, developed by a well-known assassin organization in the martial arts world. Those poisoned will surely die if they do not receive the antidote within half an hour. What kind of medicine did you give them?"

Qin Suiyou seemed to be lost in his own thoughts and did not answer Li Yuanyuan's question. Seeing this, Li Yuanyuan called out a few more times before Qin Suiyou came back to his senses.

"I used an antidote that I developed myself. As long as the raw materials are not too rare or unusual poisons, it can at least temporarily suppress the poison and buy more time for rescue."

Upon hearing this, Li Yuanyuan's eyes lit up. Qin Suiyou knew what she wanted to say, so he said directly, "I will give you the prescription tomorrow, but with your current skills, the effect will be reduced. If you want to achieve the same effect as the medicine I have made, you will have to figure it out yourself."

With the necessary resources, Qin Suiyou relied on sophisticated instruments to develop his prescriptions, something Li Yuanyuan couldn't yet match. However, Qin Suiyou believed that the wisdom of people in every era should not be underestimated. Moreover, given Li Yuanyuan's current abilities, if she couldn't improve the prescriptions even with Qin Suiyou's assistance, she should consider changing careers as soon as possible.

Li Yuanyuan's attitude, at least for now, did not disappoint. He knew what kind of poison Yun Ying and the other girl had been poisoned with, and he also knew how precious the antidote pill, which was comparable to the antidote, was. He was so excited to receive the prescription that he immediately stood up, clasped his hands, bowed, and thanked them.

At that moment, Du Ruo's voice came from inside the curtain: "Young Master, the wound has been stitched up."

Qin Suiyou responded with an "okay" and pulled the curtain open a little.

At this moment, Du Ruo had already covered Yun Ying's body with a thin blanket without pressing on the silver needles.

Qin Suiyou went in and took out the silver needles. Du Ruo and Beitang Xinyue then worked together to carry Yun Ying to the side room that they had instructed the maids to prepare.

After all that effort, Yun Ying still hadn't woken up. Bei Tang Xin Yue was a little worried, so she asked Du Ruo, "Sister Du Ruo, when will Yun Ying wake up?"

After covering Yun Ying with the blanket, Du Ruo replied, "Young Master acted in time, so the poison didn't have a big impact on her. She's been unconscious until now mostly because of the blood loss earlier. She should wake up by tomorrow at the latest. Afterwards, I'll personally prepare some blood-nourishing medicinal meals for her."

Upon hearing this, Beitang Xinyue smiled brightly.

"Thank you, Sister Du Ruo. But could I learn to make medicinal cuisine from you? Actually, I should have been the one who got hurt today. It was because Yun Ying and I were playing around in the carriage and switched places that she suffered like this. Yun Ying has been with me for many years, and I want to do something for her."

Du Ruo smiled and patted Beitang Xinyue's head, saying, "No problem, but you haven't reached the end of your ten-day holiday yet, so you might not have time these next few days."

Beitang Xinyue replied firmly, "I will ask Master Liu for leave tomorrow. I was greatly frightened today and need to rest at home for a few days."

Seeing that Du Ruo was about to say something, Bei Tang Xin Yue spoke first: "Don't worry about it affecting my studies. I'll have Pei'er tutor me then."

After hearing what Beitang Xinyue said, Du Ruo smiled and shook her head.

"I'm not saying you shouldn't take leave, I just want to say that your brother is back."

"what!"

Following Du Ruo's direction, Bei Tang Xin Yue looked outside and indeed saw her brother's figure. However, that figure seemed to be running impatiently towards the main room where Qin Sui You was.