"Your Highness, do you think I did the right thing?"

Princess Ning Xiaoqian handed over the homework book in her hand and asked.

Li Xin put down his work, took the workbook, and looked at the contents.

The neat handwriting clearly showed numerical calculations.

During this period, in order to promote mathematics, Li Xin decided to first promote it within the Prince's Palace.

After all, the Prince's Palace needs to use its internal accounting data.

Ning Xiaoqian was quite intelligent and quickly grasped the reasoning behind it.

After reviewing them one by one, Li Xin nodded in satisfaction and said, "Qian'er, you did a great job, everything is correct!"

Putting down his workbook, Li Xin asked, "Do you understand all the mathematical calculation rules?"

"I have mastered all the rules of addition, subtraction, multiplication, and division."

However, the Pythagorean theorem, and things like straight lines, rays, and elliptical coordinate systems are still a bit confusing and I don't understand them..."

"Come here, Qian'er."

Holding Ning Xiaoqian's soft little hand, Li Xin smiled and said, "I'll teach you!"

Look at this wooden board. To make one side straight, you need a ruler. The straight line is this edge.

An ellipse, that's the shape...

Holding the things in his hands, Li Xin patiently explained.

While explaining with real objects, Li Xin also went over the knowledge from the textbook with her.

After she finished speaking, Ning Xiaoqian's eyes were a little glazed over, and she was still somewhat confused.

Li Xin was also somewhat helpless.

When girls studied geometry in later generations, they often struggled with it.

For boys, geometry is easy, algebra is hard, and there are endless physics and chemistry formulas to memorize.

These are all difficult for girls, while Chinese, English, Politics, History, and Geography are relatively simple.

This is the difference between men and women!

"After you go down there, read more books and think more. It takes time to understand and comprehend this!"

Li Xin could only say helplessly.

Ning Xiaoqian stopped asking questions, closed her textbook, and looked at the wooden components in Li Xin's hands. With a puzzled look, she asked, "Your Highness, what are these wooden planks and pipes for?"

"Distillation apparatus".

Li Xin smiled mysteriously and said.

"A distiller?"

Now Ning Xiaoqian was even more puzzled, "What is that used for?"

Li Xin affectionately touched Ning Xiaoqian's nose and said with a smile, "You'll find out soon enough."

Immediately, Li Xin began to assemble the wooden components that had been prepared on the ground.

This set of stills consists of three semi-circular, sealed ceramic jars, made by potters from the construction team.

Three sealed earthenware jars, each with a small opening at the top, are connected by a tube. The three jars also serve as a distiller, a condenser, and a storage container, respectively.

This set of stills looks very simple.

However, it took the potter a long time to make two sets.

After all, glass didn't exist in this era, so creating a perfect still was extremely difficult.

But it's alright!

Looking at the still in front of him, Li Xin smiled and said, "Qian'er, let me show you the function of this still."

With that, Li Xin set up the still and added sorghum liquor to one of the earthenware jars. He then lit a fire with firewood below and began distillation.

Soon, a strong aroma of wine filled the palace.

The sorghum liquor of this era had an extremely low alcohol content, almost like a beverage. When heated, the alcohol evaporated into vapor, which then passed through pipes into the condenser.

When cooled in the condenser, the vapor condenses and drips into the storage container.

Watching the clear, transparent liquid drip into the storage container, Li Xin nodded in satisfaction.

"This is... wine?"

Ning Xiaoqian asked with some doubt.

"Yes, wine!"

Li Xin nodded.

After setting the bottle aside, Li Xin caught a drop of the newly dripped wine and smelled it.

The rich aroma of the wine intoxicated Li Xin.

I haven't smelled such a strong aroma of alcohol in a long time!

"Why does this wine smell so good?"

Ning Xiaoqian asked in surprise, "When I was a child in Jiangnan, I never encountered such good wine..."

"Here, have a taste..."

Li Xin dipped a little bit of the chopsticks in the water and placed it in front of Ning Xiaoqian.

Ning Xiaoqian stuck out her tongue and gently licked it.

Instantly, Ning Xiaoqian jumped up, grimacing, "How can it be so spicy..."

"Hahaha……"

Li Xin also laughed.

Distilled spirits are spicy!

Spicy is what makes alcohol great!

If it's not spicy, what kind of wine is it?

"Spicy is the only way to make it flavorful!"

Li Xin gently patted Ning Xiaoqian's back and said, "This is wine specially made for men!"

Next time I have the chance, I'll make you some wine for women...

This set of stills is used to distill spirits.

The other still was also being used.

Li Xin put the agarwood, camphor, and jasmine flowers he had collected during this period into a distiller, added purified water, and then began to heat and distill.

Before long, drops of liquid began to drip from the tube above the storage device, and a strong, pungent smell spread throughout the room.

The aroma was even stronger than that of wine, and it also contained the scents of agarwood and borneol.

This is……

Ning Xiaoqian stared at the distiller with her beautiful eyes, a hint of confusion on her face.

Li Xin offered no explanation, focusing intently on the storage device.

The liquid in the container is a fragrance extracted from agarwood and camphor.

Take out a few drops of fragrance, put them in a small porcelain bottle, add balm and alcohol, and then shake the bottle.

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