Li Yan and Zhu Shan took a carriage to the Chengdong Nitrogen Mine Area.

Zhu Shan was wondering all the way, what was the purpose of going to the nitro mining area? It was deserted and there was nothing valuable. It would be better to sell poetry directly and make more money in your own store. That's so good!

Unexpectedly, this trip directly changed the entire Tang Dynasty's ice industry.

It will even set off a craze about ice consumption.

There were only two people on the carriage.

The copper basin on the car made a crisp sound.

"Driving!"

There is no one along the way.

After a long time

Zhu Shan finally couldn't help it.

"Sixth Prince, why are you going here? You have to bring two more basins?"

"I'll know in a while!"

"There is no one here to go to the mining area. It's better to wait for General Cheng in the store. What if he comes early?"

"When he comes, he will wait. It's okay!"

Li Yan said.

If other civilians dare to let Cheng Yaojin and others, they will be desperate.

Li Yan can be arrogant!

"Ah...this..."

“When will we arrive?”

"It's getting faster and faster. It's going to take three miles."

"Okay, if you see a river, pick some water first in two copper basins."

"yes!"

Then the two found a clear river and were filled with water.

It's all the way to a barren land.

It seems that it hasn't been mined for a long time.

Weeds everywhere.

"Sixth Prince, we are here."

Li Yan got off the carriage and said, "Take all the basins and let's take a look inside."

"yes……"

Zhu Shan followed in with some anxiety.

They went inside.

The temperature inside the mine is much lower than that outside.

It's very cool inside, but the environment doesn't seem to be very good.

"Put the copper basin here!"

"yes!"

Zhu Shan did as he did, and placed two basins on the ground in one after another.

"Get a large piece of saltpeter for me!"

He took another stone from the wall.

Li Yan put the small basin in a large basin.

He took the saltpeter from Zhu Shan's hand and threw it into the copper basin.

As soon as saltpeter entered the water, it made a chirping sound.

A gust of white water vapor rose, like a magical method.

Saltpeter and water reacted quickly.

But facing this situation, Zhu Shan was frightened very much.

His body trembled a little, and he stood there motionless.

What's wrong with this? Why is this happening! Terrible!

Looking at Li Yan, he seemed to have no reaction at all.

Are you too sensitive?

After a long time, Zhu Shan's mouth kept trembling.

"This... what kind of magical method is this? Is the Sixth Prince a magical method?"

This may be what he could imagine.

There is no other solution to this.

Li Yan gave him a blank look. It was really rare and strange.

It's just that some heat exchange occurs when saltpeter encounters water, which takes away the heat and turns the water into ice. Is that what?

He was watching.

Zhu Shan stared at the copper basin with his eyes tightly.

Then, something that made him unforgettable happen.

The water in the small basin began to form ice cubes and emitted a hint of coolness.

Li Yan was delighted, and the browser did not lie to him.

It's really iced. And the small pot of ice is actually edible.

The water in ancient times was clean and pollution-free.

"Well, it's OK, that's great."

You can make a big profit in the future.

He had thought about smoothies, iced tea, iced cakes... everything related to ice can be dabbled in. The profit is as high as a hundred times! He basically made money while lying down.

In the future, what is the richest man in Chang'an?

The richest man in the Tang Dynasty can do it.

At the same time, the days ahead will be comfortable and there is no need to suffer from the heat.

"Six...Prince Liuliu...This... is simply a miracle!"

Zhu Shan is already a little incoherent.

It's just a simple chemistry principle. As for being so nervous?

But then again, it is now the Tang Dynasty and the backward feudal era.

Everything that is unsolved will be given miracles.

It is understandable that he showed shock.

"You go and see what's in this small basin?"

Zhu Shan walked over tremblingly and reached out to touch him.

"Is this ice? This is actually ice!"

He picked up a piece of ice and started dancing.

"Sixth Prince, you are a god!"

“Try it.”

"Really possible?"

Li Yan nodded.

Zhu Shan put a piece into his mouth, and a cool feeling was refreshed.

"Yes, yes, yes. It's ice, you can eat it!"

Then asked:

"How do you know this method can make ice?"

"We are going to get rich next! With such a simple method of making ice, we can sell ice! A small piece of ice can produce at least a thousand pieces of it on this day..."

Without abacus, Zhu Shan calculated with his hands and couldn't do it anymore.

"Be calm, just make some money in silence, and don't be high-profile. Otherwise, we won't even drink soup in the future."
To be continued...