Seeing that it was quiet and said with a smile that it was not hot at all, Xiao Changyi's mood was naturally better.

Then he lay down and lay face to face with Quiet.

Quietly smiled at him for a long time before turning his gaze to the ice cubes in the bucket and wooden basin, "Xianggong, so much ice, it's expensive, right?" ”

"Meng Zhuqing said that it cost three hundred taels."

Quietly sighed, "It's so expensive" She originally thought that she could buy it for a few dozen taels, it seems that she underestimated the value of ice here.

However, it's no wonder that ice is so expensive here, after all, there is no electricity and no refrigerator here.

And here is the winter chiseled ice stored in the ice cellar for summer use.

Immediately, Quiet made a bitter face: "This time it's three hundred taels, and I don't know when this hot weather will pass, if we use ice like this every day, it's really a waste of money." ”

Because the weather is too hot, the business of Qianwei Restaurant is not very good now, she is really distressed about this money, the money she earned from Qianwei Restaurant is used to open a lot of rice shops to store grain, not to buy ice.

And she is pregnant, she can endure the heat, but she is afraid of the heat and spoiling the two little ones in her belly.

So, even if she thinks it's a waste of money, she still has to buy it.

Xiao Changyi said: "Our family is not short of money. ”

Quiet or bitter: "Our family is indeed not short of money, but I still feel that it is a waste." ”

"And what do you want?"

Silence immediately wilted: "I don't know if we could make ice ourselves, then we don't have to spend money to buy ice, and I won't feel wasted."

Before she could finish speaking, her eyes suddenly lit up and she exclaimed, "Ice?!" ”

Xiao Changyi was taken aback by her and asked urgently, "What's wrong?" ”

"Ice-making, Xianggong!" Quiet and excited. She had learned in her high school chemistry class that saltpeter dissolves in water and absorbs heat, lowering the temperature and causing the water to freeze.

And here there is saltpeter!

Xiao Changyi was happy to see that something had happened to his body when he was quiet, and his heart was put down, and he asked calmly: "Do you know how to make ice?" ”

He knew that her original world was much more advanced than theirs, so he was really not surprised that she knew how to make ice.

What's more, after the previous things such as rice and fish, grain and white paper, he has become very accustomed to his daughter-in-law's amazing behavior.

"Well, I didn't think about it just now, but now I do." Quiet is still very excited, happy. "Xianggong, saltpeter will absorb heat when put in water, and we can use this to make ice."

Xiao Changyi knew that Quiet's words hadn't finished yet, so he quietly listened to Quiet's words.

Sure enough, Jing Jing continued: "When the time comes, we will take a large basin, put saltpeter in a large basin, fill the large basin with water, and then take a small basin and put it in the large basin, and the small basin will also be decorated with water. In that way, not only will the water in the large basin freeze due to saltpeter heat absorption, but the water in the small basin will also freeze. Moreover, the frozen ice in the small basin is still edible. ”

The ice in the large basin is inedible because it is contaminated with saltpeter, but the small basin is not polluted, and if the small basin is filled with clean water at the beginning, the ice in it can really be eaten.

"When the time comes, if we want to eat ice, we will eat it in a small basin, and the ice in a large basin will melt slowly, just like now, not only will we not be able to get hot, but we will also save money."