With Pinxixi in hand, I have a supermarket in the Changzheng!

This stone does look unusual. It is white in color and has sharp edges. It does not look like any stone you pick up from the mountains.

What on earth is this thing?

More and more people gathered around, and some knowledgeable people in the crowd recognized what this thing was.

"Isn't this saltpeter? I saw it when I was an apprentice in a pharmacy!"

A soldier squeezed into the crowd, grabbed a stone, observed it carefully and said this.

"Saltpeter? What is saltpeter?"

"Pharmacy? Could this white stone be a medicinal herb?"

The crowd chattered and whispered, becoming even more curious about the white stone.

The soldier who had been an apprentice in a drugstore explained it to his comrades around him.

"This saltpeter is a medicinal herb. It can detoxify and reduce swelling."

The soldiers nearby nodded frequently, "No wonder Xiaofei came back with a basket of stones on his back!"

"Since it's medicinal herbs, we have to send it to Director Wu!"

Everyone was preparing to pick up the stones on the ground and send them to Wu Shisan.

Xu Fei quickly stopped everyone and said, "Don't be in a hurry, I still need this saltpeter!"

The soldiers looked at him in confusion, "You're not a doctor, what use are you?"

Xu Fei raised his lips and smiled confidently, "Hey, help me prepare something, I'll show you something special later!"

When the comrades heard this, curiosity gleamed in their eyes.

"Strange? What's so strange?"

"Xiao Fei, what do you need to prepare?"

Later, under Xu Fei's arrangement, the comrades gradually gathered all the things.

There was a large vat, an iron basin, and two buckets of water.

Seeing that the camp was surrounded by people and was particularly lively, the soldiers from the surrounding camps also came to join in the fun.

At this time, Xu Fei was concentrating on the task at hand.

The large vat was half filled with water, and the iron basin was also filled with water.

I borrowed a large mortar from a fellow villager and ground the saltpeter into fine powder.

Then he put the saltpeter powder into a large vat of water, stirred it with a wooden stick, and it quickly dissolved.

The waiting time was about half an hour, and the soldiers around were a little tired of waiting. Some of them couldn't wait any longer and even walked away.

Half an hour later, the water in the iron basin underwent a dramatic change.

The originally liquid water has now turned into ice. Although it is not frozen too hard, it is really ice!

"Ice! Is this really ice?"

"This is so amazing!"

"These stones are really good stuff! I've been so hot these past two days, I really want to eat some ice!"

The surrounding soldiers were almost boiling with excitement.

It is so exciting that ice cubes appeared in such a hot summer.

In fact, the principle is very simple. When saltpeter is dissolved in water, it absorbs a large amount of heat.

The heat in the water in the iron basin is absorbed, the temperature drops sharply, and it naturally freezes.

A large backpack of saltpeter, but only a few pieces were used to make a basin of ice.

One pound of saltpeter can make one pound of ice cubes. This backpack contains at least eighty or ninety pounds, which can make a lot of ice cubes.

Xu Fei and his comrades shared the ice cubes in the iron basin. The icy and cool taste made everyone who tasted it sigh with satisfaction.

"Oh! So cool! Eating a piece of ice in the hot summer is so refreshing!"

"Hey! I was a little anxious because of the heat, but after eating some ice cubes, I felt better instantly!"

"Xiao Fei, where did you find these stones? I want to carry some back too!"

Xu Fei smiled and replied, "It's on the mountain. I'll take you there later!"

The news of using saltpeter to make ice quickly spread to all the camps.

In this hot summer, nothing is more tempting than ice. After hearing the news, people from every camp went up the mountain to carry saltpeter.

The camp where Zhou Yue was located was of course no exception. Li Dagang, Gou Wa and their group, carrying backpacks, walked excitedly up the mountain.

They couldn't wait to taste the ice cubes, and their steps were brisk.

Soon Xu Fei led a group of people to the place where he found saltpeter.

This location is quite remote, the trees in the forest are dense, and the place where the saltpeter is located is very hidden.

Everyone originally thought it was a small pile of rocks, but when they got there they found out that it was actually a saltpeter mine!

There is a large area of ​​saltpeter underground, and the output must be calculated in tons.

When the soldiers saw this, their eyes lit up. With so much saltpeter, they could have some ice cream tonight!

This saltpeter mine certainly did not appear out of thin air, but was a magic tool for cooling off that Zhou Yue gave to everyone through the system mall.

The price of saltpeter is not expensive in the mall, only five points per kilogram. Zhou Yue directly placed an order for 1000 tons, which is two million kilograms.

She ate ice cream alone the past two days and felt very guilty, so she came up with this good idea to let the soldiers eat ice cream together to cool off.

Xu Fei was the NPC she had arranged to join the team before. Zhou Yue had arranged quite a few NPCs in the team.

Most of them joined the team through the red expansion campaign.

The reason why there are so many NPCs in the team is that it is really necessary.

For something like making ice from saltpeter, if Zhou Yue came to demonstrate it once, it would be fine, but if he did it so ostentatiously every time, that would be bad.

With more NPCs, Zhou Yue can create more good things without exposing himself.

"Brother Dashan, please carry less and don't get too tired!"

Gou Wa saw Zhao Dashan filling his backpack with saltpeter, so much that it was about to fall out, and he couldn't help but feel worried.

"No problem, I can carry it!"

Zhao Dashan smiled brightly, feeling so happy that his eyes narrowed up.

Soon the soldiers came back. Zhou Yue looked at the several large backpacks full of saltpeter and had an idea in his mind.

"Brother, help me wash the wild grapes and the lips!"

"How much do you want to wash, sister?"

"Wash them all!"

My younger brother Zhou Xing washed the two kinds of wild fruits and brought them over.

Zhou Yue crushed all the wild fruits. The red-purple fruits exuded a lot of juice after being crushed.

Zhao Dashan, who watched the whole process, has already mastered the method of making ice.

At this time, he was working hard to make ice with a large group of comrades.

After the first bowl of ice was made, Zhou Yue did not share it with everyone directly, but started to DIY the food.

Fruit smoothies, which are very popular in modern times, will definitely whet the taste buds of the Red Army soldiers.

These frozen ice cubes are not that hard and can be easily blended into smoothies.

Zhou Yue poured the wild fruit juice she had just prepared into the pot, then added the chopped yogurt lumps and dried mulberries, stirred evenly and it was done!

This delicacy is not only beautiful but also delicious. The red and purple color whets your appetite and one bite will cool your heart!

Zhou Yue served everyone a big bowl so that they could drive away the heat.

The Red Army soldiers carried back some of the 1000 tons of saltpeter ore, and there was still a lot left.

These are left to the villagers in the village. After all, the summer is very hot and they can occasionally cool down.

The soldiers in the army ate such cool food today and slept more comfortably at night.

The main force prepared to leave the village and continue their advance at around eight o'clock the next morning.

As soon as it got a little light, a soldier came out of bed.

"Buffalo, it's not even daybreak yet, where are you going?"