Hearing Nangong Yumo's words, the little guy's eyes suddenly lit up, and he muttered to himself: Uncle is really smart.
Then, I glanced at the others and saw that everyone looked normal.
So, he pinched his fingers and whispered.
"No need for you to apologize, uncle, but if you're happy, could you please let me take some snacks back?
We don’t have it at home, and we can’t buy it outside.” He has been carefully observing the various cakes on the street these past two days, but there is nothing like the one at his uncle’s house.
Everyone then realized that this was the plan.
Then there was a burst of laughter at the scene: "Hahaha, hahaha."
This kid really wants to eat...
Nangong Yumo laughed enough and waved his hand.
"Okay, since Doudou likes snacks so much, then bring some back. If it's not enough, uncle can ask someone to make some for our Doudou, okay?"
Hearing this, the cub excitedly rushed over, hugged Nangong Yumo's thighs, raised his rosy little face, and spoke in a crisp baby voice.
"Thank you, uncle. You are the best. Doudou loves you. Muah."
He raised his little hand and blew a kiss.
Jiang Ling took a look and guessed that it was Shen Yinyun who taught him again. Anyway, he couldn't possibly teach him how to fly a kiss.
After a while of noise, everyone finally sat down, drank tea and chatted.
The atmosphere with children around is lively, warm and a little funny.
As for the Second Prince Nangong Xuan and the Third Prince Nangong Jing, they are both very good. Compared with the boldness of Nangong Ye, these two princes are very gentle and polite.
In the imperial study, the main people chatting were Jiang Ling, Nangong Yumo and Nangong Ye. Yue Qianli, the other two princes, and the little prince were only responsible for quietly drinking tea, listening, smiling and nodding.
At this time, Nanfeng, the leader of the imperial guards, came to report.
He also held a piece of saltpeter and two buckets, one large and one small.
There were two people following behind, each carrying a bucket of water.
These were all what Jiang Ling had asked them to prepare before.
The saltpeter was obtained directly from the imperial physician in the palace.
The weather was getting hotter, and Jiang Ling felt that it was better to arrive at the right time than to arrive early, so he simply taught them how to make ice first.
Don't ask Jiang Ling how he knows these messy methods.
Because he particularly liked watching similar videos before the end of the world, and he still had a lot of them saved on his phone.
Although it has not been put into practice, it is theoretically feasible, but it requires multiple verifications.
So Jiang Ling prepared to perform ice-making for everyone on the spot.
Explain while operating.
"Big brother, second brother, third brother, fifth brother, in fact, you only need to watch it once, and you may be able to do it.
Making ice with saltpeter is very simple, just put it in water.
Because when saltpeter dissolves in water, it absorbs a large amount of heat energy, which lowers the surrounding temperature and slowly condenses into ice.
Moreover, saltpeter can be used repeatedly and the cost is really low.
However, the ice made by adding saltpeter directly to water cannot be eaten directly and is slightly toxic.
It can be used to freeze food or items, or just placed in the room to allow air to circulate and cool down.
So, as you can see, I used two buckets.
Keep saltpeter and drinking water separate.
I put saltpeter in the water outside, and this ice cannot be eaten directly.
Only this bucket inside has no saltpeter, so when it freezes into ice it can be eaten directly."
At this time, the curious little prince Nangong Lingyan asked.
"Aunt Si, since there's no saltpeter in the water, how can it freeze?"
Oh, the little prince finally spoke. This child is not at all like Nangong Yumo who talks a lot. He is as silent as a scholar or a little old man.
Jiang Ling glanced at him, smiled and said.
“Your Highness, your question is a good one. It is a good habit to ask when you don’t understand something.
Because when the saltpeter in the barrel begins to dissolve in water, it will continue to absorb heat from the barrel, causing the water temperature in the barrel to drop rapidly.
However, there is a big temperature difference between the big barrel and the small barrel in the middle.
Therefore, heat will be quickly transferred from the inside to the large barrel outside, so that the water temperature in the small barrel in the middle will gradually cool down until it freezes into ice.
Since there is no saltpeter in the ice cubes in the middle bucket, there is no problem in eating them directly.
It's just ice cubes made from a little water. The water is drinkable, and the ice cubes are edible."
After hearing Jiang Ling's words, everyone carefully observed the changes in the bucket.
The little prince nodded, as if he understood.
His eyes lit up and he spoke in an excited tone.
"It's like joint liability. When the heat in the big barrel is absorbed by the saltpeter, if the temperature in the small barrel is higher than that in the big barrel, it will also be absorbed until it freezes into ice.
Can I understand it this way, Fourth Aunt?"
"Oh, you're so smart. You're worthy of being the eldest brother's son. You can understand it this way."
"However, this will take time, so don't be impatient.
If you are really in a hurry, you can go back and feel the temperature of the bucket after a while, hahaha."
He understands this curiosity, and it’s really cool to witness the miracle moment!
Sure enough, after about a quarter of an hour.
The little prince couldn't help but walk over and touch the outside of the bucket with his hand.
His eyes were wide open, full of surprise.
"Wow, it really exists!" Others also ran over like curious babies.
Jiang Ling smiled and said, "Everyone, it's still early.
It takes about half an hour for this bucket of water to turn into ice.
If there was more water, it would take longer.”
When Nangong Yumo heard this, he had a plan in mind.
"Brother, I guess there aren't many uses for saltpeter nowadays, but you can take control of the saltpeter mine.
It’s so hot, you don’t have to give out the recipe, but you can sell ice cubes.
It’s okay if it’s cheaper, and you can make a lot of iced drinks to quench your thirst.
The people of Nanyu City might be happier in life.
Then, you can arrange for craftsmen to build some double-layer barrels specifically for making ice.
Just adjust the proportions, add saltpeter and water, and leave it alone. It will naturally turn into ice when the time is right. It won't take many people."
Jiang Ling was speaking while Nangong Yumo was listening and taking notes.
After Jiang Ling finished speaking, he arranged for Nanfeng to carry out the task.
Half an hour later...
Six adults and three children gathered around an ice bucket.
Sure enough, the water in the buckets turned into ice.
A large piece of ice, crystal clear.
Everyone was ecstatic.
The little guy couldn't help but put his hand in and touched it out of curiosity.
"Wow, it's so cold! It's as cold as ice in winter." After saying that, he took a few steps back.
"Hahaha, isn't this just ice in winter?"
Jiang Ling couldn't help laughing.
To be honest, it was his first time making ice, but he actually succeeded. He is truly a genius and very smart.
You don’t know until you try it, and you’ll be surprised when you do.
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