Yi Shuihan raised an eyebrow.

"This whole mountain is full of these useless rocks, it's even hard to grow trees, what are you going to do with it?"

Xiao Qingyin picked up a handful of pebbles and asked him, "Do you know what kind of stones these are?"

"Sand and gravel?"

"This is called quartz sand!"

Xiao Qingyin was extremely excited.

This was the first time she had ever seen such high-purity quartz sand.

Yi Shuihan's face was blank.

He had never heard of quartz sand and didn't know what it was used for.

"Is it medicinal material?"

"Of course not!"

Xiao Qingyin couldn't wait to teach him some common sense.

"It's a raw material for making glass. You might not have heard of glass, but you should know about colored glaze, right?"

Yi Shuihan nodded: "I know."

His mother's favorite piece of jewelry was the lake-green glass earrings that his father gave her.

"Glass and crystal are similar, but they are composed of different materials. One is composed of sodium and calcium, while the other is composed of lead and barium."

Glass is colored and very fragile; it cannot be used to hold things and can only be used for decoration.

Glass comes in various colors, some are colorless, and the colorless ones are as transparent as crystal, making them extremely versatile.

Like ceramics, it can be made into various objects and decorations.

It can also be used to make windows, eyeglasses, greenhouses, mirrors, and so on.

The artifacts commonly used in the country of Iraq, where those foreigners lived, were made of glass; glass products were as common there as our ceramics.

But if you were to import a single glass mirror from Iraq, it would fetch at least a million strings of cash.

Upon hearing this, Yi Shuihan finally understood why she was so excited.

Items that can sell for a million coins are indeed expensive.

Several mountains here are made of quartz sand, which should be enough to make a lot of the glass mirrors she mentioned.

"This is a gold mine!"

Xiao Qingyin laughed heartily.

No wonder she dreamt of gold falling from the sky during her midday nap; it turns out she's really going to get rich.

"The owner of this mountain range probably doesn't know the value of this quartz sand. He should be able to buy it for a small amount of money. Please help me find out more."

Yi Shuihan smiled.

"I'm afraid they won't make a move."

Xiao Qingyin asked in surprise, "How did you know before you even asked?"

"This is the mountain in my home."

Xiao Qingyin: "???"

"Yours?!"

"Yes."

Xiao Qingyin's expression gradually became blank.

What did she just say?

fall!

She actually revealed the secret to the wealth of this mountain to its owner!

She was furious.

Is she really that unlucky with money?

Xiao Qingyin glared angrily at Yi Shuihan, wishing she could kill him to silence him.

This guy is really cunning. If he had explained from the beginning that it really was his family's mountain, she wouldn't have spilled the beans like a bamboo tube.

Yi Shuihan felt a surge of pleasure as he watched the woman before him, who resembled an enraged little leopard, baring her teeth and brandishing her claws.

After he finished laughing, he said, "Okay, I was just kidding. I can sell you the mountain."

"real?"

Xiao Qingyin looked on with suspicion.

"Are you really willing to sell the mountain to me? You're not going to ask for an exorbitant price, are you?"

"No, just the price for ordinary mountain terrain."

Seeing that he didn't seem to be joking, Xiao Qingyin cheered up again.

"Thank you, Your Highness. You are truly the best person I have ever met!"

Looking at Yi Shuihan's bronze mask again, it seemed much more pleasing to the eye.

But once her excitement subsided, she regained a sliver of rationality.

One reason why glass could not be made in the ancient East was that high-purity quartz sand was scarce, hidden deep within the earth, and difficult to find.

Secondly, it is because the calcination temperature of quartz sand is very high.

Materials require a sustained and stable high temperature of 1600 degrees Celsius to fuse.

Ancient furnaces simply couldn't reach that temperature; porcelain kilns only reached a little over a thousand degrees.

The West can produce it because it has abundant quartz sand and a lot of natural alkali blocks.

Natural alkali blocks can significantly reduce the temperature required for quartz sand to melt.

Xiao Qingyin happened to know about materials that could replace natural alkali blocks.

In other words, she was the only one in Daehee who could make glass.

To monopolize such a highly profitable industry, she certainly couldn't do it alone; she needed to find a powerful backer.

Otherwise, she'd be going to meet the King of Hell before she even made any money.

Thinking of this, Xiao Qingyin said shyly, "How can I take such a big advantage from the young master? Why don't I provide the technology and the young master provide the materials, and we can start a glass business together?"

After a moment's thought, Yi Shuihan knew exactly what was going on in her head.

This is someone who wants to make a lot of money but is afraid of being targeted.

He smiled and said, "No problem."

"That's great." Xiao Qingyin breathed a sigh of relief. "We'll draft a cooperation plan later and then discuss how to split the profits."

"good."

Xiao Qingyin walked around the mountain and confirmed that it was all the same mineral vein. She was both happy and apprehensive.

"You should find someone to keep an eye on it first, otherwise someone might dig up the sand to build a house, and you'll lose a lot of money."

"What a money-grubber."

Yi Shuihan smiled and agreed.

Back outside the West Gate, Xiao Qingyin saw a row of tents set up in front of the gate, with several long queues, and each person holding a bowl.

He asked in confusion, "Is someone doing disaster relief?"

"Yes."

"Who is it, moving so fast?"

Yi Shuihan didn't know either. He walked to the front and saw the round face under the tent that was smiling like Maitreya Buddha before saying, "It's the Third Prince."

Xiao Qingyin smelled the aroma carried on the wind; the porridge even contained meat.

I couldn't help but be surprised: "He's quite willing to spend money."

As Yi Shuihan heard the praise around him, his gaze darkened.

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