More than a quarter of an hour later, the saltpeter was retrieved, and Emperor Yuan suddenly found that his headache seemed to have gone away.
Jiang Yueyang glanced at the little eunuch who was panting secretly, "Did you run there and run back?"
The young eunuch smiled and said, "We should not delay Master Xiao Jiang's important business."
At this time, Emperor Yuan said: "My headache doesn't seem to hurt anymore."
Upon hearing this, Guo Yuanzheng immediately took two steps forward and said, "Your Majesty, please allow me to feel your pulse."
Emperor Yuan stretched out his hand, and Guo Yuan was carefully feeling every beat of his pulse.
After a moment, Guo Yuanzheng withdrew his hand and said, "Your Majesty has been overworked recently and needs to rest. I will prescribe some medicine for Your Majesty to take good care of your body."
Emperor Yuan: “…”
I shouldn't have taken his pulse earlier. The Queen is listening here. I have no choice but to take medicine.
Guo Yuanzheng confirmed again: "Your Majesty, are you really not having a headache?"
"It doesn't hurt anymore."
"It doesn't hurt at all?"
Emperor Yuan nodded expressionlessly. He really didn't want to see Guo Yuanzheng's face right now.
Hearing what Emperor Yuan said, Yuanzheng Guo immediately turned to Jiang Yueyang and said, "Master Jiang, can you let me take a look at your medicine?"
"Guo Yuanzheng, it's not that I'm stingy and don't want to show you. The method of making that medicine is special, and the medicine used is rare in the world. You probably can't make it."
"I just wanted to take a look."
Jiang Yue looked embarrassed, but after hesitating for a while, she still took out the medicine.
Director Guo was looking at the medicine with strange packaging and strange shape and fell into deep thought. How was this tiny pill made?
And why is it this color?
"Yuanzheng Guo? Yuanzheng Guo..." Jiang Yueyang called out several times and reached out to take the medicine, "It's time to return the medicine to this humble official."
Dean Guo reluctantly let go, and finally said, "Master Xiao Jiang, can't you let me study it? Even if I can't do it."
Jiang Yueyang lowered her eyes to glance at the medicine in her hand, then raised her eyelids to look at Guo Yuanzheng, who was looking at her with longing eyes.
Finally, she softened her heart and took one out for him.
"This medicine needs to be stored in a sealed container. It will easily deteriorate if exposed to air. You will have to throw it away after studying it for two or three days. Do not consume it."
"Yes, yes, I will definitely keep it in mind." Dean Guo took the pill solemnly and carefully, "Thank you, Master Xiao Jiang."
Seeing this, Emperor Yuan asked, "Jiang Yueyang, do I need to take it a few more times to consolidate it?"
"No, this medicine is used to relieve headaches. Your Majesty, since you don't have a headache anymore, there is no need to take it. As the saying goes, medicine is three parts poison, so don't take it if you can avoid it."
Emperor Yuan glanced at the medicine in her hand and said, "Okay."
Seeing that His Majesty was still coveting Jiang Yueyang's medicine, the Queen Mother smiled and asked, "What is Lord Jiang going to do with the saltpeter?"
"Your Majesty, I am going to show you a recipe. Do you think I need to dismiss the attendants?"
Emperor Yuan waved his hand and said, "Guo Yuanzheng, you guys should leave first."
"promise."
The Empress also signaled Aunt Shang to dismiss the palace maids. In the end, only the Emperor and Empress, the Third Prince, the Eldest Princess, Jiang Yueyang, Aunt Shang and Li Fuquan were left in the palace.
"My lady, do you have any glass cups?"
The Queen nodded, "We have a few, does Lord Xiao Jiang need them?"
Jiang Yueyang nodded.
"Aunt Shang, get the glass cup."
After a while, five glass cups of different sizes were brought over.
The current colored glaze cups are not as exquisite as those of modern times, but they are extremely expensive vessels.
Jiang Yueyang selected two glass cups, one large and one small, that were shaped like bowls, and said, "Bring a basin of water."
Soon, the water was brought.
Jiang Yueyang poured water into a large glass cup, then added the saltpeter and stirred it.
As the saltpeter dissolved in the water, the water in the large glass cup gradually changed.
Jiang Yueyang turned to look at the Third Prince, "Your Highness, please touch the glass lamp."
Hearing this, the Third Prince who was sitting next to him reached out and touched the glass cup, then he opened his eyes wide in surprise.
He said uncertainly, "The water seems... colder."
Hearing this, Emperor Yuan stood up and walked down, and reached out to feel the surface temperature of the glass cup.
After he felt the slight chill, he slightly widened his eyes, with a look that contained not only surprise but also a hint of inquiry.
Jiang Yueyang continued to add saltpeter into the glass cup. When she felt it was almost enough, she placed the small glass cup filled with a little water into the large glass cup that was emitting a slight cool air.
Soon, a thin layer of ice condensed around the small glass cup.
Emperor Yuan's eyes widened. "This saltpeter can actually freeze water!"
He thought saltpeter could make water colder, but he didn't expect it could also freeze it.
Jiang Yueyang replied respectfully: "Your Majesty, saltpeter can be refrigerated and made into ice when it comes into contact with water. This is the business I want to do with Your Majesty."
When everyone heard this, they were all amazed.
The eldest princess was delighted. "With this method, we don't have to worry about running out of ice anymore, right?"
The third prince asked curiously: "Jiang Yueyang, how do you know that saltpeter can be used to make ice?"
"I saw it by chance in an ancient book, and out of curiosity I tried it, and to my surprise it really worked. Moreover, the used saltpeter can be recycled and reused."
The reason she knew that saltpeter could be used to make ice was because she read it in a time-travel novel.
Out of curiosity, I bought half a pound of saltpeter from the Internet, and I actually made ice cubes for her.
The Queen smiled widely, "Lord Xiao Jiang, I don't know how to thank you. If this method is promoted in the future, it will definitely benefit the people."
"Promote?" Jiang Yueyang regretted it. "My queen, I want to use it to make money. Besides, saltpeter is not edible. If it is not handled properly, it may endanger life. It is not good to promote it casually."
Hearing this, the Queen finally realized something and said, "I was not thoughtful enough."
Emperor Yuan looked at the thin ice in the glass cup and said happily, "Tell me, how do you want to do this business with me?"
Jiang Yueyang immediately replied: "I have thought of two ways to cooperate.
One is that I hand over the recipe to the court, and then the court will give me 20% of the annual profit from selling ice.
But then, Your Majesty might not make any money.”
Emperor Yuan's mind raced, but he didn't show it on his face. "Tell me about the second method of cooperation."
"Second, Your Majesty will grant me the qualification to sell ice cubes to the public. Your Majesty will share 20% of the profits from the ice cubes I sell, without Your Majesty having to spend any money or effort."
After hearing Jiang Yueyang's words, Emperor Yuan smiled and said, "I already know the recipe for making ice from saltpeter, so you're not afraid that I'll snatch it away."
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