Tian Bu returned to the military medical camp with a bunch of things. He brought back lime, activated charcoal, butter, vinegar, and spirits. The military medical camp had them, but Li Mengxi did not give them. After returning to the military medical camp with these things, Tian Bu was extremely excited.

He explained the method of extracting drugs to his colleagues.

Tian Bu did not understand the extraction method at first, but after Li Mengxi explained it to Tian Bu seriously, he suddenly taught Tian Bu thoroughly.

Tian Bu, who had been taught the lesson, explained it to other military doctors, and what he said was clear and logical.

If there is something that the military doctors don't understand, Tian Bu can answer it no matter what the question is.

After a long time, most of the military doctors understood the extraction method, and then Tian Bu led the military doctors to discuss what medicine should be extracted.

The military doctors discussed it for a while, discussing and discussing, and found that there were not enough medicinal materials.

According to the extraction method, ten kilograms of herbs can extract only three to five spoons of medicinal powder. Most drugs in the military do not have such large stocks.

After much deliberation, among many herbs, only licorice has a relatively large amount of stock.

Therefore, military doctors decided to start extracting licorice.

The military doctors divided the work and cooperated. First, they chopped the licorice into powder with a guillotine, chopped a whole basket, and then weighed many portions according to ten kilograms.

Next, prepare the solutions, one part liquor solution, one part lime solution, one part vinegar solution, one part butter solution, one part starch solution, and one part salt solution.

After preparing these solutions, Tian Bu directed everyone to pour ten kilograms of licorice powder into it, and then slowly simmer it over low heat.

Some of the military doctors were confused and asked why the fire was not increased.

Tian Bu explained, "Just like an egg, if you put the egg under the hen's wing, the chick will hatch, but if you put the egg in hot water, the egg will be cooked.

The military advisor told me that the same is true for medicinal properties. If the water is overheated, the medicinal properties will be denatured.

Therefore, it should be simmered over low heat and the water must not be boiled."

The logic was very clear, and the military doctor suddenly realized it.

Tian Bu and other military doctors began to test the extraction technology. According to the slow boiling method they used, it would take two or three days to boil the water dry.

——

In the City Lord's Mansion, Li Mengxi was thinking about something.

Tian Bu tried the medicinal powder boiled from willow bark. It was very effective. Moreover, the extraction method has been determined. Boiling willow bark in lime water or boiling it in clean water can extract some white powder.

The remaining question is whether the drug ingredients are hidden in the bark of the willow tree, in the leaves, or in the woody layer of the branches. This is still unknown.

When making the medicine, the bark of the willow tree was peeled off and the branches were thrown aside.

If by any chance, if there are more drugs in the branches, wouldn't it be like losing the watermelon and picking up the sesame seeds?

While Li Mengxi was thinking about something, a woman came back with Xiao Bian.

When Li Mengxi saw his younger brother coming back, he curiously asked, "Xiao Bian, aren't you going to class?"

The woman who brought Xiao Bian back said worriedly, "I see that Xiao Bian is wilted and his face is red. He seems to be sick. I need to get him checked out quickly..."

When Li Mengxi heard this, he came back to his senses and quickly looked at Xiao Brick.

He hadn't noticed it just now, but when he saw it now, Li Mengxi noticed it. His younger brother was wilting, standing there without saying anything, and kept rubbing his eyes.

Li Mengxi called out to Xiao Zhuan, and Xiao Zhuan replied feebly.

When his younger brother fell ill, Li Mengxi was so anxious that he quickly got up and took Xiao Brick to find a military doctor.

Li Mengxi and Xiao Zhuan hurried to the military medical camp, found Tian Bu, and asked Tian Bu to quickly diagnose and treat Xiao Zhuan's condition.

Tian Bu took his pulse and tested the temperature of Xiao Brick's forehead with the back of his hand. He looked at Li Mengxi who looked nervous and said, "It's nothing, it's just the wind and cold." Tian Bu comforted him.

Tian Bu suggested that Li Mengxi give Xiaozhuan some white medicinal powder extracted from willow bark to try. Li Mengxi hesitated and did not agree. He asked Tian Bu to prescribe some herbal medicine first.

Tian Bu nodded, got up and went to grab the medicine.

——

After taking the medicine, Li Mengxi left the military medical camp and hurried back to the city lord's mansion. Li Mengxi quickly started boiling the medicine.

While Li Mengxi was boiling the medicine, his younger brother sat aside, quietly and did not speak.

Li Mengxi kept touching his brother's forehead with his hand, "Little brother, are you cold?" Li Mengxi asked with concern.

Xiao Bian shook his head and smiled at Li Mengxi, "Brother, I'm not cold."

Li Mengxi remembered how cold he was when he was sick from the cold.

He quickly got up and went to the side room to grab a quilt and put it on Xiao Bian.

It takes a long time to boil the medicine, and it will take even longer to cook at a low temperature to avoid boiling water destroying the properties of the medicine.

Li Mengxi guarded the medicine jar. While he was looking after the fire, he was very worried about his younger brother. He told his younger brother a story, and his younger brother listened quietly.

Li Mengxi recalled that when he was a child, when he was as old as his younger brother, if he was sick or uncomfortable, he would cry and make a fuss, not even eating, but insisting on snacks and toys.

My brother is so young, he is very quiet when he is sick and does not make a fuss. He is so sensible and heartwarming.

After a long wait, the medicine was finally ready. Li Mengxi took the medicine and fed it to his brother one spoonful at a time. After feeding the medicine, he wiped the corners of his mouth with his sleeve and said, "Little brother, hurry up, lie down on the bed and sleep for a while."

"

Xiao Zhuan asked, "Brother, can't I learn calligraphy?"

"I'm not going." Li Mengxi put down the bowl, "Let's go to class when we're ready."

——

It is difficult to fall asleep when you are sick. You feel uncomfortable all over. Beside the bed, Li Mengxi covered Xiao Bian with a quilt. Seeing that his brother still had his eyes open, he smiled at him and said, "Be obedient, sleep, and have a good sleep."

Just feel better."

The younger brother tilted his head and looked at Li Mengxi, "Then will my brother sleep too?"

"...Oh, okay, brother will sleep too."

The two brothers fell asleep together. After a long time, Li Mengxi waited for Xiao Bian to fall asleep, then he got up secretly, lying on the bedside, supporting his chin with his hand, looking at his brother's sickly face with worry.

Time passed by minute by minute, and before you knew it, it was dark.

——

At night, Xiao Bian woke up from a deep sleep. When he opened his eyes, he saw that the room was dark and he felt a little scared.

At this time, I heard the stirring of the quilt, and a voice sounded, "Brother, are you awake?"

Hearing his brother's voice, Xiao Bian was no longer afraid and felt relieved.

There was a sound of footsteps, and the footsteps went away. After a while, the footsteps came back again, and Li Mengxi brought in a lamp.

With the light of the lamp, Li Mengxi came to the bedside. He reached out and touched his brother's forehead. When he touched it, it was warm.

(So ​​hot!) Li Mengxi's heart skipped a beat. He became nervous and quickly asked, "Brother, are you feeling better?"

Little Brick snorted like a mosquito and struggled to get up.

Li Mengxi quickly put down the lamp and reached out to hold it.

As soon as I helped Xiao Zhuan to the bedside, Xiao Zhuan vomited loudly and loudly.

Outside, in the main hall, Liu Bei and others heard the noise and came over.

When he entered the house, he saw that Xiao Zhuan was vomiting violently. Li Mengxi was supporting him and patting Xiao Zhuan's back gently. Liu Bei asked with concern, "What's wrong with Zhuan'er?"

Li Mengxi looked up at Liu Bei and others who came in, and replied, "Fenghan."

When Xiao Bian was almost done vomiting, Guan Yu came in with a bowl of water. Li Mengxi took the bowl and fed the little brother some water to rinse his mouth. He reached out and touched Xiao Bian's hot forehead, feeling very sad.

Li Mengxi asked his brother softly what he wanted to eat.

Xiao Bian's voice was weak and weak. He looked at Li Mengxi eagerly and asked cautiously, "Can I eat fish?"

"Sure! We'll eat fish when you're ready."

Li Mengxi had been infected with wind-cold not long ago and had not seen any improvement after taking herbal medicines for several days. The herbal medicines took effect too slowly.

Li Mengxi saw that his younger brother was pale and sick, and felt very distressed. After hesitating and hesitating, Li Mengxi got up and went to get the medicine.

Tian Bu took some of the medicinal powder extracted from the willow tree and used it, but there was still a little left.

Li Mengxi clearly knew that the medicinal powder was useful, but because he was not sure of the dosage, he did not dare to use it lightly. Therefore, Xiao Zhuan became ill and initially planned to use some herbal medicine for conservative treatment.

Looking at it again now, Xiao Zhuan drank the medicine and slept again, but instead of getting better, his illness became worse. Worried that something would happen if he delayed further, Li Mengxi had to take the medicine and give it a try.

Li Mengxi recalled that when he got cold, he ate half a kilogram of willow bark and recovered. When Tian Bu used medicine, he gave each of the patients half a spoonful of medicinal powder, and the patients recovered.

It's okay for adults to take half a spoonful of medicinal powder. Little Brick is only a few years old, so he definitely can't take that much.

Li Mengxi carefully took about one-eighth of a spoonful of medicinal powder, put it in the water, and gave it to Xiao Bian to drink.

After Xiao Bian drank the medicine, Li Mengxi coaxed Xiao Bian into sleeping.

Liu Bei and others saw Li Mengxi taking care of an older child and a younger one. They were afraid that Li Mengxi could not take care of them well, so they asked Li Mengxi to go to bed first, and they all took care of them.

Li Mengxi declined Liu Bei's kindness and insisted on watching by himself.

Liu Bei had no choice but to tell Li Mengxi to go to bed early.

——
To be continued...