Li Su and Zhu Shan took a carriage to the nitrate mining area in the east of the city.

Zhu Shan wondered all the way what he was going to the nitrate mining area for. It was deserted, and there was nothing of value. It's better to sell poetry directly, and your own store can make more money, so it's good!

Who knows, this time has directly changed the entire ice industry of Datang.

It will even set off a frenzy of consumption about ice.

There were only two people in the carriage.

The copper basin on the car made a crisp sound.

"Drive, drive!"

There was no one all the way.

It's been a long time

Zhu Shan finally couldn't help it.

"Sixth prince, what are you here for? And two basins? ”

"We'll find out in a moment!"

"There is no one in the mining area here, it is better to wait for General Cheng in the store, what if he comes early?"

When he came, he told him to wait. It's okay! ”

Li Su said.

If other ordinary people dare to let Cheng bite Jin and others, it will be a death.

Li Su can be arrogant!

"Ah...... This ......"

"When will we arrive?"

"It's coming, it's coming. It's three miles away. ”

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

"Yes!"

Later, the two found a clear river and filled it with water.

All the way to a barren land.

It looks like it hasn't been mined in a long time.

Weeds everywhere.

"Sixth Prince, we've arrived."

Li Su got out of the carriage and said, "Bring all the basins, and let's go inside to have a look." ”

"Yes......"

Zhu Shan followed in with some trepidation.

They went inside.

The temperature inside the mine is much cooler than outside.

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

"Put the copper basin here!"

"Yes!"

Zhu Shan did so, and successively placed two pots on an empty flat ground.

"Fetch me a chunk of saltpeter!"

He took another stone from the wall with all his might.

And Li Su put the small basin into the big basin.

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

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

A burst of white water vapor rose, like a god's means.

Saltpeter reacts quickly with water.

But in the face of such a situation, Zhu Shan was very frightened.

His body trembled a little, and he froze there.

What's going on? Why is this happening! Terrible!

looked at Li Su and didn't seem to react at all.

Is it because you are too sensitive?

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

"This ...... What kind of fairy means is this. Could it be that the six princes are immortals? ”

That's probably what he could imagine.

Other than that, there is no other solution.

Li Su glanced at him, it was really rare and strange.

It's just some heat exchange that takes place when saltpeter meets water, which takes away the heat and turns the water into ice, but is that so?

His old god was watching.

That Zhu Shan's eyes stared at the copper basin deadly.

Then, something unforgettable happened to him.

The water in the small basin began to freeze and exude a hint of coolness.

Li Su was happy in his heart, and the browser really didn't lie to himself.

It's really frozen. And the ice in the small basin is actually edible.

The water of ancient times was clean and unpolluted.

"Well, sure enough, that's great."

You can make a lot of money in the future.

He thought, what smoothies, iced teas, iced cakes...... Everything that has to do with ice, he can dabble. The profit is more than 100 times! It's basically lying down to make money.

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 you don't have to suffer from the heat.

"Six... Six-six-six princes... This...... It's a miracle! ”

Zhu Shan was already a little incoherent.

It's just a simple chemical principle, as for so nervous?

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

Everything that is unsolved will be given miracles.

He was understandably shocked.

"You're going to see what's in this little basin?"

Zhu Shan walked over tremblingly and stretched out his hand to touch it.

"This is ice? This turned out to be ice! ”

He picked up a piece of ice and danced with his hands.

"Sixth Prince, you are a god!"

"Try it."

"Really?"

Li Su nodded.

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

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

Then he asked:

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

"We're going to get rich! Such an easy way to make ice, then we can sell ice! A small piece of ice for twenty wen, this day can produce at least a thousand large pieces of ......"

There is no abacus, Zhu Shan calculates with his hands, and he can't count it.

"Calm, we can make some money quietly, not high-profile. Otherwise, we won't even have soup to drink. ”

Li Su interrupted Zhu Shan's words, there are some things, do more and say less.

"Yes, yes, in the future, I will listen to you for everything. I don't ask much. ”

He expressed his determination.

"By the way, is this nitrate mine really unmined?"

"That's right! No one. I've been playing around here since I was a kid and it's been abandoned here. ”

In ancient times, it could not be found to be of real use, so there was no market.

"Don't let anyone know about this beforehand, until I get the mining rights here. Fence it off again, and we'll have to rely on it for business in the future. ”

"Yes! That profit ......"

Zhu Shankou fast.

As soon as I found myself, I said it was too late.

And again, "I mean ......."

"I know what you mean, I said that as long as you do it well, I won't treat you badly. In the future, as long as you participate, how about the money we earn? ”

This obviously exceeded Zhu Shan's expectations.

One percent of him laughed there.

"Xie Sixth Prince! When I went back, I closed the restaurant. Concentrate on this! ”

"No, you're still going to keep it on. I'm going to use that restaurant in the future. ”

Zhu Shan was puzzled.

But Li Su wanted to do this, so he let him be.

"In the future, you will be in charge of the business field, you are in the front, and I am actually in control, so you understand? If you have any questions, ask them promptly. ”

"How dare I have a problem, whatever the six princes say, it is!"

Li Su also said seriously:

"Another point, you have to remember that in front of others, you don't have to call me the Sixth Prince, call me Mr. Zili."

"Yes!"

Zhu Shan nodded yes.

Then, he said, "It's hot, why don't we produce more ice?" ”

"It's up to you."

Anyway, you don't have to do it yourself, everything is up to Zhu Shan.

"Okay."

Zhu Shan continued to operate, and after a while, he made several large copper basins of ice.

That's enough to cool off in the afternoon.

You can even collect it in a water tank and enjoy the ice water.

At this time, they didn't know that there were already people waiting for them there for a long time at the restaurant.