"Father," Chu Yi's clear and gentle voice echoed in the quiet East Warm Pavilion after a while, "It is said that Taizu burned his handwritten notes before he passed away."

The emperor took a few deep breaths, calmed himself, and said in a hoarse voice, "Before his death, Taizu wrote several books, most of which were torn up and burned by him, leaving only the last one. Not long after that book was written, Taizu passed away..."

"And the notebook is missing."

"Before the coffin of Emperor Taizu was placed in the imperial mausoleum, the late emperor searched the entire palace several times, dug deep into the ground, but found nothing."

"Alas, the late emperor has always suspected that it was Aunt Fengyang who took the letter."

Having said that, the emperor rubbed his eyebrows and felt a deep sense of fatigue rising up.

Seeing the emperor's fatigue, Chu Yi stood up and walked to the emperor's side, whispering: "Father, it's time for you to take a nap."

The emperor is already in his fifties, and his health has not been good over the years, with a minor illness every three to five days. In the past few months, because of Chu Yi's return to the country, he seems to be in better spirits.

Meeting his son's concerned eyes, the emperor couldn't help but smile. Without saying anything, he patted his son's hand and said with a relieved smile: "Okay, I'll go and rest."

The emperor acted as if he was not in charge of anything. He asked Zhao Rang to hold the Peach Blossom Painting for him and then walked away leisurely.

As soon as the emperor left, Chu Yi ordered Xiao Shi, "Go and call He Lie."

Half a cup of tea later, He Lie, the commander of the Embroidered Uniform Guard, came as ordered and saluted with his fists clasped.

"What's going on with Marquis Ji'an?" Chu Yi asked in a faint voice, with a faint smile on his handsome face, making it impossible to tell whether he was happy or angry.

He Lie maintained his fist-holding posture with a solemn expression.

Ever since Chu Yi took over the Jinyiwei, the Jinyiwei have truly become the emperor's eyes and ears. They know all the major events that have happened in the capital recently.

He Lie answered concisely: "Marquis Ji'an regretted it. He went to the Duke of Weiguo's mansion three days ago to ask for forgiveness and gave himself a dagger..."

"The stab wound to Marquis Ji'an was not deep, but the first doctor did not treat the wound properly, allowing the external evil to enter the body, causing the wound to become red, swollen, and eroded, resulting in a high fever that would not subside. He almost died."

"That day, Doctor Wan from Wancaotang took the initiative to come to the Marquis's residence, and the Marquis's wife, Madam Ji'an, tried it as a last resort."

"After applying the medicine, Marquis Ji'an's fever subsided in the middle of the night and he woke up at dawn."

"Although his wound is not healed yet, it is much better now and he can almost get out of bed."

The knuckles of Chu Yi's right hand were tapping carelessly on the desk, and the fingers of his other hand occasionally lightly stroked the small green porcelain jar. His eyelashes were half-drooped, and it was unknown what he was thinking. He seemed to be listening, but he didn't seem to care much about what He Lie said.

After He Lie finished his report, the room fell into silence.

He Lie looked at Chu Yi quietly, waiting for his instructions.

Seeing that he remained silent for a long time, He Lie searched his stomach and thought about it. He thought of another seemingly unrelated but related thing, so he said, "Your Highness, the head of the Ministry of War, He, also bought a few cans of Penicillium Powder and took it back."

"oh?"

Chu Yi only said such a simple word, but He Lie understood his intention and continued tactfully, "A few days ago, a group of soldiers from the Shenshu Camp returned from Yanzhou after suppressing bandits. A lieutenant and several soldiers in the camp developed a high fever after being injured. The military doctor used various decoctions to no avail. The injured continued to have a high fever. The Ministry of War should have bought the Penicillium Powder for them."

Chu Yi looked at the white medicine powder in the small porcelain jar, his thin lips curled up in an arc with ambiguous meaning, and his eyes were deep.

Penicillin? Penicillin powder? He never believed that there would be such a coincidence in the world.

Just as He Lie said, the Ministry of War did send people to buy the medicine for this purpose, and the medicine was used on the wounded patients that day.

In just two or three days, the fever of all the injured subsided.

Their injuries were not serious to begin with. The soldiers were young and in good health, and after their fever subsided, they recovered within a few days.

The Minister of War Wu Zhongde attached great importance to this matter and immediately reported the whole story to the emperor. Several military doctors from the Imperial Medical Bureau jointly presented the injuries of the wounded, their medication records, etc.

Even Princess Fengyang was alarmed by this matter.

Upon hearing that the penicillin written by Taizu in the letter had actually appeared in the world, Fengyang could not help but go to the legendary Wancaotang.

In just ten days, Wancaotang had become well-known in the capital, and even passers-by who happened to pass by would take a few glances at it out of curiosity.

Fengyang looked up at the sign with three large golden characters "Wancaotang" and walked in.

The front hall was very spacious. One wall was lined with a row of medicine cabinets that extended all the way to the roof. The air was filled with a strong medicinal aroma mixed with the scent of mugwort.

This clinic is quite bright and spotless at first glance.

"Are you here to seek medical treatment, old lady?" The clerk with a mask on his face came up to her with a smile, looked the old woman up and down, and said with great enthusiasm, "If you want to see a doctor for external injuries, please see Doctor Wan; if you need internal medicine for colds, headaches, stomach discomfort, etc., please see Doctor Liu; we also have a doctor here who is good at both gynecology and pediatrics."

Fengyang was wearing an ordinary green dress today. Her gray hair was tied into a simple bun, and the only piece of jewelry on her body was a jade hairpin.

At first glance, she was just an ordinary old woman in the market.

Fengyang shook his head, his deep gaze moving over the white mask on the guy's face.

The idea of ​​requiring doctors to wear masks was also proposed by Taizu. Taizu said that covering the mouth and nose with a mask can prevent some infectious diseases such as colds and coughs, and ordered Shang Pharmacy to regulate medical clinics and drugstores throughout the country.

Unfortunately, a new emperor appoints new ministers. After Taizu's death, the Shang Pharmacy no longer enforced these rules, and gradually, no medical clinics or drug stores followed them.

The waiter looked at Fengyang again, and from her demeanor and the jade hairpin on her head he realized that she should be an old lady from a wealthy family. He smiled even more, thinking that maybe an old lady from a wealthy family had heard of the fame of Wancaotang and came to join in the fun.

"Old lady, have you ever heard of our Wancaotang's Qingmousan?" The waiter greeted Fengyang enthusiastically, "It's a miracle medicine for treating external injuries. Buy one and take it back, just in case."

"I just heard about your secret recipe, so I came to take a look." Feng Yang continued to walk in, looked at the middle-aged doctor sitting inside, and asked casually, "Who is your boss?"

During this period, there were many people who came to ask about their boss. The clerk was already used to dealing with such inquiries, so he answered with a smile: "To be honest, I don't know either."

"I heard from our Doctor Wan that he was originally from Yuzhou and fled to the capital. He was accidentally rescued by our boss. Doctor Wan was grateful and stayed in the capital to serve the boss."

"Old lady, to be honest, even the Ministry of War came to us to buy Qingmengsan. If even the imperial court dares to use this medicine, isn't it a miracle drug?"

The waiter spoke excitedly, but Fengyang listened a little absent-mindedly. What the other party said was similar to what the Jinyiwei had found out.

But Fengyang always felt an inexplicable sense of disharmony. She looked around again and found that there was nothing special about this clean and bright clinic.

"Give me a can." Feng Yang said lightly.

When the waiter heard this, his eyes lit up and he responded enthusiastically, "Okay!"

He knew that this was an old lady from a wealthy family. Could an ordinary family just casually give out ten taels of silver? !

Fengyang was escorted out of Wancaotang by a warm-hearted waiter, and the carriage from the princess's mansion was waiting outside.

She was about to get on the carriage when she suddenly stopped and saw two familiar figures in a tea shop across the street.

Two graceful figures, one in blue and one in purple, were huddled together and whispering to each other intimately. One was lively and sassy, ​​while the other was lazy and bright. The energetic girl made the surrounding colors seem to become brighter.

Isn’t this the darling lady of the Wei family, and... that somewhat mysterious little girl from the Gu family!

Feng Yang raised his eyebrows and stood still.

The female guard beside her was about to help her into the carriage, but when she saw this, she called out softly, "Master?" She thought something was wrong.

Fengyang raised his hand and gestured for them to go first, and walked alone towards the tea shop diagonally opposite. A few feet away, he heard Wei Jiaoniang's giggle, as clear as a bell.

The girl's good mood could not be concealed and was very contagious, causing Fengyang's lips to curl up.

"Jiao Niang." She called out, and the two little girls in the teahouse who had their backs to her turned their heads and looked at her.

"Your Highness..." Wei Jiaoniang smiled brightly. "What a coincidence."

Wei Jiaoniang hesitated for a moment, then warmly invited Fengyang to sit down.

She didn't notice where Fengyang came from, but Gu Yanfei noticed it. He glanced at Wancaotang not far away from the corner of his eye, then looked away calmly.

Wei Jiaoniang asked the waiter at the tea shop to serve tea to Fengyang, and said with a smile: "Are you here to watch the fun too?"

"What's the excitement?" Feng Yang asked casually.

"Hey, grandpa is coming back today." Wei Jiaoniang said with great energy, "I'll bring Yan Fei along to watch the fun."

As she spoke, Wei Jiaoniang pointed in the direction of the west city gate.

"Marquis Ji'an?" Fengyang's tone was flat, neither cold nor hot.

Wei Jiaoniang leaned over and whispered, "He is also here to wait for grandfather."

Although the parties involved in the incident between Wei Wan and Xu Yan and Xu Luo, father and son, were keeping it to themselves for various reasons, Feng Yang was well-informed and knew something about it.

After impeaching the Marquis of Ji'an, the Duke of Weiguo privately sought an audience with the emperor and told him the whole story with tears and snot.

Fengyang was quite disdainful of Xu Yan, Marquis of Ji'an.

At this time, the waiter served tea while shouting.

This kind of street tea shop is certainly not as good as those proper teahouses. The tea they provide is just coarse tea to quench the thirst of ordinary people.

But Fengyang didn't care at all. She picked up the teacup, blew on it, and then took a few sips. She looked totally unrestrained and didn't look like a high-ranking princess at all.

Gu Yanfei looked at Fengyang, then looked at the cup of tea in front of Wei Jiaoniang, which was still full.

Even though Wei Jiaoniang didn't say a word of disdain, Gu Yanfei could see that Wei Jiaoniang was not used to this kind of street tea shop and didn't feel comfortable with it. The reason she chose such a place to sit down was just to watch the fun.

Because her desire to watch the fun was more important than anything else, Wei Jiaoniang didn't care about these details.

But Fengyang is different.

Gu Yanfei looked at Feng Yang steadily, looking into the other's old but not cloudy eyes.

Seeing Gu Yanfei looking at him, Fengyang also looked at Gu Yanfei.

Gu Yanfei was wearing a half-new purple Hu riding suit and a black flame whip on her waist. She was sitting in this simple tea shop with a casual and nonchalant look, as if she could naturally blend into the environment.

No matter where she is, she can be so leisurely and comfortable, as relaxed as the breeze and flowing clouds, free and unfettered.

It's really not easy for a little girl who hasn't even reached the age of marriage to have such a demeanor... No wonder that boy Chu Yi was so attracted to her.

Thinking of this, Feng Yang looked at Gu Yanfei with a look of elder's kindness and joy in his eyes, and his expression was gentle. He thought: Chu Yi is really a good boy.

Fengyang took another sip of the warm and fragrant barley tea and said with a smile, "I haven't had this barley tea for a long time."

"I remember the first time I drank this barley tea when I was a kid. It was after I waded through a mud puddle with my father. I was exhausted, and my father had to carry me out for the second half of the journey."

"After I woke up, my father secretly gave me barley tea without telling anyone else. At that time, I thought the tea was so fragrant and the best tea in the world..."

She was only five or six years old at that time, and now, she is almost seventy.

This person really can't accept her old age. She has been thinking about the past more and more often these days...

Fengyang felt a little sad and sighed...the sadness of the passing of the person lingered in his heart.

Of course Wei Jiaoniang knew that the father Fengyang was referring to was Emperor Taizu. She looked at Fengyang with burning eyes and full of admiration.

She had heard a lot from her grandfather and grandmother about Princess Fengyang, most of whom were about how Fengyang fought on the battlefield and how she helped Taizu to stabilize the country, but this was the first time she had heard Fengyang's stories about her childhood.

Wei Jiaoniang lowered her eyes and looked at the cup of dark brown barley tea in front of her. The aroma of burnt barley penetrated her nose and the tea soup tasted rough.

Wei Jiaoniang picked up the teacup and drank the cup of barley tea that she had just been somewhat disdainful of.

The tea in the mouth is slightly bitter and burnt, but it has a slightly sweet and refreshing taste when you taste it carefully, and a strong barley tea aroma fills the mouth.

Well, although this barley tastes rough, it has a unique flavor.

Wei Jiaoniang savored the taste in her mouth, put the cup on the table, and shouted boldly: "Another cup."

The waiter quickly poured another cup of tea for Wei Jiaoniang.

Feng Yang placed the small green porcelain jar he had just bought on the table and asked in a low voice, "Girl, can you see what it is?"

Fengyang heard from the emperor and Chu Yi that the Qingmou Powder was originally presented by Gu Yuan at the request of Gu Yanfei.

Gu Yanfei shook his head.

Since the day she brought the so-called Penicillium Powder back home, she studied it for quite a while but still couldn't figure out what it was.

Two days ago, Chu Yi had someone bring her the pulse records of several wounded soldiers in the army. Gu Yanfei also looked through them carefully but still found nothing.

Gu Yanfei did not feel frustrated. In this vast world, there were many things and methods that she did not know.

Instead, she found it interesting and excited, and added, "Judging from the pulses of those injured, this medicine is indeed miraculous."

"After taking the medicine, it will take about half an hour to start to take effect and the fever will start to subside... within three days, the condition can basically be stabilized. If it is serious, the medicine will only be used for another two days."

Feng Yang looked at the small porcelain jar with a slightly vague look in his eyes. After a long silence, he asked, "Girl, what if it was you?"

"It can be cured." Gu Yanfei nodded slightly. "Hemostasis and tissue regeneration talisman, Qinghuo pill, and golden needles. But I have to treat the symptoms. I can only save one person at a time. It's not like this Qingmou powder. Even an ordinary doctor can use it to save many people."

"However, so far, there are still too few people who have used this medicine, and there are only a dozen or so cases. I don't know..."

"I don't know if it's effective for everyone, and whether there will be any side effects?" Feng Yang said.

In ancient times, Shennong cultivated hundreds of herbs. Determining the medicinal properties of an herb is sometimes accidental, but often inevitable. It summarizes some of the experiences of doctors in using medicines for thousands of years, especially for poisonous herbs such as centipedes and aconite. When using them as medicine, it is necessary to carefully consider the dosage and compatibility.

A slight mistake can lead to a huge error. If you make a mistake, it will not save people, but harm them.

Gu Yanfei nodded again and asked casually, "Do you know medical knowledge?"

Feng Yang seemed not to hear him. She seemed to be recalling something, immersed in her own thoughts. Her eyes became more erratic, and she continued, "It won't work for some people, and it will be fatal to some people, and there is no cure."

After saying this, Feng Yang raised her head from her teacup and met Gu Yanfei's slightly surprised gaze. She seemed to know what she was thinking and said with a smile, "These are what my father told me."

"My father said that although penicillin is not perfect, its benefits far outweigh its disadvantages."

Wei Jiaoniang had no idea what the two of them were talking about and was completely confused. But when she heard Fengyang mention Emperor Taizu, she couldn't help but perk up.

She also liked listening to her grandparents talk about the legendary stories when Emperor Taizu was alive, and she only wished she had not been born twenty years earlier so that she could see Taizu in person.

Even though she didn't understand a single word, Wei Jiaoniang remained fully focused, her eyes brighter than the sun outside the tea shed.

Fengyang noticed the look in the eyes of the little girl from the Wei family, and her mood inexplicably relaxed. She thought with some amusement: She is really old. When she was young, she was most impatient to gossip with little girls. She felt that it would be better to use this time to pull a few more bows, swing a few more swords, and save a few lives on the battlefield.

But now, just looking at these two lively and cheerful little girls makes even her mood happy.

Just as her father said when he was alive, their generation fought on the battlefield for the eternal benefits of future generations.

The curve of Fengyang's lips softened a bit. "My father said that penicillin, as the name suggests, is derived from Penicillium. It can be derived from the blue mold produced by decaying fruits, steamed buns, vegetables, etc. After cultivation and filtration, penicillin can be extracted."

"He also said that penicillin should not be taken directly orally because it would be destroyed by stomach acid and become ineffective. The best way is injection, and topical application is the second best option."

"My father only told me these few words in general. I don't know the details."

When Emperor Taizu was alive, he mentioned so many new and interesting things to Fengyang, but it was only after Fengyang had thought about these few sentences for a long time on the way out of the palace that he remembered them.

"Fungus?" Gu Yanfei showed some interest on his face, rubbing his chin with his fingers, "Can fungi cure external evils that have entered the body?"

interesting.

Gu Yanfei silently chewed over what Feng Yang had just said in his heart, looking very energetic.

"Ninth Miss." A servant in blue clothes trotted over from the direction of the city gate. When he ran into the teahouse, his breath was already short. "Here he comes, the Duke is here!"

Wei Jiaoniang quickly put down the teacup in her hand and stretched her neck to look towards the city gate.

But from her position, she couldn't see anyone.

Unlike Ji'an Hou Xu Yan, who was at the city gate and could see the end of the official road at a glance, a hundred feet ahead, the Duke of Weiguo was leading a dozen of the Duke's Mansion's personal guards and riding their horses towards this side with the rumbling of horse hooves.

(End of this chapter)