Old Qiao took the prescription written by Hua Fushu to get the medicine. After returning, he boiled the medicine and gave it to Yu Xuanji to take. After taking it, Yu Xuanji's body became hot and the toxins were excreted from her body through sweating.

It is impossible to excrete a large amount of toxins from the body by taking the medicine only once, so it is necessary to take the medicine multiple times to detoxify. Considering Yu Xuanji's physical condition, Hua Fushu decided to let Yu Xuanji take the medicine to detoxify every three hours.

It was already night when Yu Xuanji finished detoxifying. The lights were on at the post station. Hua Fushu was flipping through a book on acupuncture. The lamp on the stone table illuminated the entire pavilion.

Ye Zelin changed into a sky-blue soft silk summer dress and walked into the pavilion. Seeing that she was looking intently, he snapped his fingers, and she finally looked over. "It's you."

Ye Zelin sat on a stone block to her left and glanced at the acupuncture book in her hand. "You studied the poison in Master Yu today, and spent half a day thinking about writing an antidote. Your brain must be a little tired. You should take a break and read it tomorrow. There's no need to rush."

Hua Fushu didn't feel tired, but she hadn't done much research on detoxification. In order to detoxify Yu Xuanji as quickly as possible, she was a little anxious. She said:

"The prescription I prescribed can only expel most of the poison. I'll use acupuncture to expel the rest. Each acupuncture technique has its own uses. I have to find a method that can completely expel the poison. It's not a good thing for the poison to remain in Lord Yu's body. If it accidentally invades the heart and lungs, it will be difficult to expel the poison. Therefore, it's best to expel the poison as soon as possible. I didn't tell Miss Yu and Coroner Qiao because I didn't want them to worry."

Ye Zelin glanced at the night sky and said, "It's almost evening. We have to go to bed in half an hour."

Hua Fushu leaned over, staring at him with eyes that seemed to demand an answer. "Ye Zelin, why are you so concerned about me today?"

Ye Zelin involuntarily averted his gaze before saying, "I'm not concerned about you. His Majesty ordered me to protect Lord Yu. If anything were to happen to Lord Yu, I wouldn't be able to explain to His Majesty. You're Madam Miao's disciple, and you're a skilled doctor. I don't trust the doctors in Yuezhou. Furthermore, after what happened last night, I understand their target isn't just the account books, but also Lord Yu. If I find another doctor, it'll inevitably give them an opportunity to take advantage. To cure Lord Yu's poison, I can only rely on you."

Hua Fushu was losing interest and felt that Ye Zelin had no interest in her at all. She remembered that when she first met Ye Zelin, he was chatting and laughing with the fox-eyed Liu Feixu, and even joked with her, saying that he was willing to go through fire and water for her. It turned out that he had no interest in her and his interest was all in Liu Feixu.

She ignored him and continued reading the needlework book.

Ye Zelin suddenly felt a little depressed. Why didn't Hua Fushu say a word? He didn't even show an expression of being annoyed with him.

He tapped the stone table with three fingers, making a small knocking sound, but the man was only focused on the booklet, not even looking up. He was a little annoyed, so he increased his strength and made a slightly louder sound, but the man had no other expression except a focused look.

He couldn't help feeling a little disappointed, so he stopped his little tricks, occasionally looking at the sky, and glancing at the man two or three times. A cup of tea had passed, and perhaps unwilling to be ignored, he brought up a topic: "Fushu, how did you write the fake account book? Aren't you afraid those people will find out?"

Hua Fushu's heart skipped a beat. Did Ye Zelin suspect something?

She suddenly had an idea and said with a smile, "Guess."

Ye Zelin didn't expect her to say that, so he said, "You tell me, I can't guess."

Hua Fushu was delighted to think that he had taken the initiative to talk to her, and she said, "I've seen the account book."

Ye Zelin was very confused, "When did you look at the account book?"

The account book had been kept in the room before it was given to Yu Xuanji. He had no idea when she looked at it.

Hua Fushu held her chin, tilted her head and looked at Ye Zelin, smiling, and then she said:

"That night, you were discussing something with Yu Chisu, and you weren't with me. I was lying on the couch, bored, and the account book happened to be right under your pillow, with a corner sticking out. I flipped through two pages and vaguely remembered something. I figured, since you said the account book was crucial, those people wouldn't give up until they got it, so I found a booklet and wrote a few pages in it, just in case. Some of the fake account book is real, while others are just scribbled, just to be on the safe side. I guess those people have figured out it's a fake by now, but it's too late."

Ye Zelin was grateful in his heart. Fortunately, she had kept a trick up her sleeve, so he had saved the account book. However, when he heard her mention Yu Chisu, he shuddered inexplicably. He didn't know why he remembered her words about attracting bees and butterflies and killing them one by one. He hurriedly said:

"That night I was just discussing deployment with Miss Yu, nothing else."

Hua Fushu was inexplicably surprised. Ye Zelin was so eager to explain because he was afraid that she would misunderstand. Although he didn't like her, she was still happy that he had this thought.

She liked his attitude very much, so she said, "It seems that I will have to mention that guy named Yu and Fox Eyes more often in the future."

Ye Zelin knew that the surname Yu she was referring to was Yu Chisu, and the fox eyes were referring to Liu Feixu. He coughed lightly before saying, "You're overthinking it. Miss Yu and I have nothing to do with each other. Feixu and I are just friends, just like your relationship with Miss Lu Jiayun."

"Really? I heard that you go to the guild hall to see her every once in a while, reciting poems, writing couplets, talking about the past and present, appreciating paintings and playing chess. I also heard that two years ago you spent a fortune just to see her. You are so familiar with each other, how can you be just ordinary friends? Who are you trying to fool?" Hua Fushu chuckled, with a hint of jealousy in his words.

Ye Zelin naturally understood that she didn't believe him, and said, "Sister Fushu, Feixu and I are really just friends."

Hua Fushu asked with a smile, "A man and a woman being so close, can they be friends?"

Ye Zelin was a little anxious and said hurriedly: "Fushu, if you don't like it, I will go to the Xianhua Club less often in the future."

Hua Fushu chuckled, "Ye Zelin, you're quite cute when you're so serious. If you didn't know me, you'd be considered a scholar."

Ye Zelin then realized that she was teasing him. Seeing her smiling happily, a hint of tenderness appeared in his eyes, like the spring breeze in March, and a faint smile appeared at the corner of his mouth.

After Yu Xuanji took the medicine five or six times, most of the toxins had been expelled. Hua Fushu, based on the toxicity of the poison, combined several detoxification techniques from the Ouyang family with those taught by her master, devised a detoxification method. With this method, she was 80% sure she could expel the remaining toxins from Yu Xuanji's body. However, her worst fears had occurred: the toxins had invaded Yu Xuanji's heart and lungs.

The heart is the most important organ in the human body, and the lungs are closely related to human breathing. If toxins invade the heart and lungs, they will damage them. Once the heart and lungs are damaged, Yu Xuanji will be in danger of life.

The toxin hadn't penetrated her heart and lungs. As long as most of it was expelled, Yu Xuanji wouldn't have to endure the daily pain of the poison, but would only experience attacks once every one or two months. This was her conclusion after in-depth research. What she had said earlier was only her initial assessment, not a definitive one.