When Xiao Changyi smiled and said that he was not hot at all, he naturally felt better.

Then he lay down and lie face to face with An Jing.

An Jing smiled and looked at him for a while before her eyes turned to the ice in the bucket, "My husband, is it very expensive, isn't it?"

"Meng Zhuqing said it cost three hundred taels."

An Jing sighed, "It's so expensive..." She originally thought she could buy it in just a few dozen taels. It seemed that she underestimated the value of Bing here.

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

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

Then, An Jing turned bitterly: "This time it's only three hundred taels, and I don't know when the hot weather will pass. If we use ice like this every day, it would be a waste of money."

Because the weather is too hot, Qianwei Restaurant is not doing well now. She really feels sorry for the money. The money she earns from Qianwei Restaurant is used to open a lot of rice and store grain instead of buying ice.

When she was pregnant, she could endure the hot weather, but she was afraid that the two little guys in her belly would be damaged.

So, even if she felt it was a waste of money, she still had to buy it.

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

An Jing still had a bitter face: "Our family is indeed not short of money, but I still think it's a waste."

"What do you want?"

An Jing immediately became depressed: "I don't know... It would be great if we could make ice by ourselves, so we wouldn't have to spend money to buy ice, and I wouldn't--" I would feel like a waste.

Before An Jing could finish her words, her eyes suddenly glowed and she screamed: "Icemaking?!"

Xiao Changyi was startled by her and asked anxiously: "What's wrong?"

"Make ice, my husband!" An Jing was so excited. She learned chemistry in high school. When saltpeter dissolves in water, it absorbs heat, reduces the temperature, and makes the water ice turn.

And here is saltpeter!

When Xiao Changyi saw that An Jing was not having something wrong with her body, she was happy. He let go of his heart and asked calmly: "Do you know how to make ice?"

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

What's more, after the previous incidents of rice, fish, glutinous rice, white paper, etc., he was already very accustomed to his wife's "amazing behavior".

"Well, I didn't remember it just now, but now I think about it." An Jing was still very excited and happy. "My husband, putting saltpeter in water will absorb heat, and we can use this to make ice."

Xiao Changyi knew that before An Jing finished speaking, he listened to An Jing finishing his words.

Sure enough, An Jing continued: "We will take a large basin, put saltpeter in a large basin, fill it with water, and then put it in a small basin, and fill it with water in a small basin. In this way, not only will the water in the large basin freeze due to the heat absorption of saltpeter, but the water in the small basin will also freeze. Moreover, the ice in the small basin can still be eaten."

The ice in the large basin is contaminated by saltpeter and cannot be eaten, but the small basin is not contaminated. If the small basin is filled with clean water at the beginning, the ice in it can really be eaten.

"At that time, if we want to eat ice, we will eat in small pots, and the ice in large pots will slowly melt. Just like this now, we will not only lose heat, but also save money."
Chapter completed!