"Xianggong, do you know why you save money?" Quietly and suddenly, he asked Xiao Changyi.

Xiao Changyi shook his head. Saltpeter is also not cheap. If you want the water to freeze, you probably have to use a lot of saltpeter every time.

After quietly taking care of himself for a while, he said: "Because saltpeter can be reused, we don't need to spend money to buy a lot of saltpeter." ”

"Reuse?" Xiao Changyi's cold eyes lit up.

"Hmm!" Quiet nodded heavily. "Although saltpeter dissolves into water and turns the water into ice, saltpeter can be obtained from ice or water containing saltpeter and then drying it. Then saltpeter is put into water to make ice, isn't it reused? As she spoke, Quiet raised her chin arrogantly.

The corners of Xiao Changyi's mouth hooked slightly: "How do you want me to praise you?" ”

Quiet immediately smiled: "No need to boast, just kiss it." ”

The corners of Xiao Changyi's mouth rose and arced a little bigger, and he didn't speak, he leaned over directly towards Quiet, although it was a kiss, but the two kissed for a long time before parting.

Because there was a lot of ice in the room, it was not hot at all, and this night, it was extra comfortable to sleep quietly.

On the second day, Xiao Changyi asked Meng Zhuqing to buy saltpeter.

As soon as Meng Zhuqing bought saltpeter, Xiao Changyi asked Meng Zhuqing to make ice according to the steps taught by Jingjiao.

At the beginning, Meng Zhuqing didn't believe that saltpeter could make ice, but he always did what their father asked him to do, so he followed the steps extremely obediently.

It wasn't until the water in the basin began to freeze that Meng Zhuqing completely believed it, and at the same time, admired their grandfather's vision of people even more. Their wife, like their grandfather, is a complete genius!

After all the water in the basin froze, he said quietly: "The ice in the small basin is edible, you chiseled it up, and just ate it, this ghost weather is too hot." ”

"Yes." Meng Zhuqing respectfully took the tool to chisel the ice.

When Meng Zhuqing chiseled the ice, it was already Shen Shi, and Imperial Doctor Jiang just came to check the pulse of Jing Jing to see if the fetus was stable.

Imperial Doctor Jiang also came here once today, knowing that they were making ice, but he was only extremely surprised and didn't ask much.

As an imperial doctor, it's better to talk less. What's more, there are some things that he, a little imperial doctor, can't ask.

Seeing that Meng Zhuqing was chiseling ice, Imperial Doctor Jiang knew that they were making ice quietly, but when it was actually made, he was still surprised again.

As soon as Jing Jing saw Imperial Doctor Jiang coming, he smiled and said, "Doctor Jiang, you came just in time, the ice is ready, you can also eat something cool and cool." ”

I don't want others to know their identities, and this Imperial Doctor Jiang always comes, so Jing Jing and Xiao Changyi changed their minds early, not asking Imperial Doctor Jiang to be Imperial Doctor Jiang, but asking Imperial Doctor Jiang to be Doctor Jiang.

"Thank you, princess." Imperial Doctor Jiang did not shirk and thanked him respectfully. The weather was indeed really hot, and he was hot enough on the way to the carriage, and he didn't suffer from heat stroke thanks to the soup he drank to relieve the heat.

Xiao Changyi didn't see Imperial Doctor Jiang from beginning to end, he just scooped some broken ice out of Meng Zhuqing's chiseled ice, and planned to ice the sour plum soup for his daughter-in-law to drink.

His daughter-in-law is pregnant, even if it is a hot day, he doesn't dare to give his daughter-in-law anything too cold, so he says that it is iced sour plum soup, but he only plans to give his daughter-in-law a little ice of sour plum soup.

Feeling that the sour plum soup was a little cold, Xiao Changyi really stopped continuing the sour plum soup, took the sour plum soup out of the ice, and let it drink quietly.