In the kitchen, Qin Lu was staring nervously at something on the ground, in fact, he was conducting an experiment that he didn't know if it would succeed......

In front of him, there was a large wooden basin with a lid filled with half a basin of water, and in the center of the wooden basin stood a clay pot several sizes smaller and also filled with water. Pen, fun, pavilion www. biquge。 info

"Whether it works out or not, it's up to you!"

After making sure that the preparations had been completed, Qin Lu took a deep breath, picked up the broken stones placed beside him, and poured them all into the basin with a bang.

"Sneer......"

The unexpected happened!

With a soft sound, the stones in the tub began to dissolve, and a faint layer of smoke was visible to the naked eye. I don't know if it's Qin Lu's illusion, he always feels that the temperature of the water in the wooden basin seems to have dropped a little.

"Good ...... Saltpeter ice seems to really exist......"

The smoke was actually very faint, so faint that Qin Lu wasn't sure if it existed. But the dissolving stones clearly told him that everything was going according to plan.

In the wooden basin, the water is about to condense!

This is from the memories of Qin Lu's previous life. More precisely, it comes from the memory that Qin Lu got when he read the novel in his previous life.

What kind of book it is, Qin Lu has almost forgotten it. But he distinctly remembered that one of the chapters mentioned how to make ice cubes in the summer. And this method is the saltpeter ice method!

The use of saltpeter to make ice cubes has actually been popular since ancient times. According to the book, it was probably at the end of the Tang Dynasty that saltpeter was dissolved in water, which could absorb a large amount of surrounding heat, and if the amount was sufficient, it could even condense water into ice, and it was this inadvertent discovery that prompted a magical technology to appear in people's field of vision.

That's saltpeter ice!

The advent of this technology has changed people's lives, making it possible for them to enjoy the coolness of ice in the summer. Merchants even improved on the basis of saltpeter ice, adding fruit or juice to make drinks and sell them. In the Yuan Dynasty, there was a phenomenon of adding fruit pulp and milk to ice, which is actually very similar to modern ice cream from this aspect alone.

Whether such a statement is true or false Qin Lu does not know, but the method of making ice cubes from saltpeter is really in his mind.

I remember that Qin Lu had not done similar experiments. Today's attempt is also the first time for him that a big girl has been in a sedan chair.

Luckily, the results were surprisingly good. The temperature of the water dropped much faster than he imagined, and even when he squatted aside, he could feel the temperature in the basin gradually decreasing.

"It doesn't seem that you need so many stones, you can try to reduce the amount next time......"

Qin Lu pulled the stones in the basin with chopsticks and found that a considerable part of it was not dissolved. Obviously, with the current amount of water, it is simply not possible to meet the requirements of saltpeter's dissolving reaction.

"It's good that you can save some money, just buy more fruits......"

While carefully observing the changes in the jar, Qin Lu calculated in his heart the possible cost of buying saltpeter, and suddenly a crisp female voice sounded in his ears.

"Save money, save money?"

The voice appeared extremely abruptly, almost silently appearing in Qin Lu's ears, scaring him so much that he almost didn't sit down in the basin.

"Damn, Baozhen, what are you doing, you want to scare me to death!"

Turning his face, Qin Lu noticed that it was his sister Qin Baozhen who appeared beside him. The latter was staring at him with a pair of large, beautiful eyes, and a look of curiosity on his face.

"Why are you so scared, I won't eat you......" Qin Baozhen quickly noticed the wooden basin on the ground, "Eh, what is this?, why does it look like a ...... Well water?!"

"It's not like it!

Qin Lu pushed Qin Baozhen's head back angrily, "I know that you dead girl won't be so obedient, and it's not honest to let you eat a fruit, I'm really convinced......"

Qin Lu is not pretending to be profound, he has never tried the saltpeter ice making method before, and he doesn't know what kind of reaction process it will be in the middle, so not letting the two of them come over is purely for the sake of insurance. The little girl was so disobedient, he was really angry at this time.

Qin Baozhen keenly felt the unkindness in Qin Lu's tone, glanced at him secretly, and said carefully: "But, brother, why are you making a basin of water on the ground...... And so many stones were poured?"

"Want to know?" Qin Lu pouted in the direction of the inner courtyard, "Go and call Qingqing over, and bring the fruits I bought!"

"Cut, God mysterious~"

Out of curiosity about his brother's strange behavior, Qin Baozhen obediently went to the inner courtyard and dragged the little snake charm who was eating happily. But what she didn't expect was that what was waiting for her was a closed door.

"Wait here, and you'll be there in a moment!"

After Qin Lu got the fruit, he ignored the angry eyes of the two of them, and decisively blasted the person out again. Not to mention the explanation, there is not even a crack in the door left for them.

"We're ...... It's disgusting......"

The little snake charm secretly stuffed another petal of orange into her mouth, and her teeth opened and closed quickly, and after a while, she ate the orange she snatched from Qin Baozhen's hand.

Licking his fingers stained with juice, the little snake ghost tilted his head and said, "In my opinion, your brother must be doing something very powerful, and he was afraid that you would go in and cause trouble for him, so he closed the door!"

Qingqing didn't say anything, but as soon as he explained, Qin Baozhen became even more angry, and said angrily: "What are you kidding, I'm his sister! I'm really angry that I'm worried about making trouble!"

When Qin Lu was still a scholar, Qin Baozhen was always in charge of all the things in the family, whether it was making money, washing and cooking, Qin Baozhen thought that she was still very capable.

It's a good thing, not only has the opportunity to cook been deprived, but now they don't even let the door in, which is extremely hateful!

"Hmph, don't let me see it! I want to see it, do I think I can stop me by closing the door? It's so naïve!"

Qin Baozhen's eyes burned with scorching flames, and after looking around, she picked up a stone and put it under the window.

A young girl in a white pleated dress stepped on a stone with great difficulty, and peeped into the room in a very indecent posture. What appeared in front of Qingqing was such an almost funny picture.

However, looking at it, Qingqing suddenly giggled.

"Yes, yes, this is like a girl~"

The little snake charm suddenly felt that compared with when they first met, Qin Baozhen at this time seemed to be more like a sixteen-year-old girl.