After crossing over: kidnapping a female hunter to be the stepfather of the three cubs

It was around one or two o'clock in the afternoon when she drove her newly bought carriage back to the inn.

He threw the carriage to the waiter and gave him a handful of copper coins, asking him to take good care of the animals. The copper coins were more than enough for two carriages.

When I passed by Shuxiangju, I had already sent a message to the village chief. I estimated that he would arrive in the town tomorrow morning.

"Qing Zhao, how do you feel?"

Huanxi pushed the door open and walked into the room. Xu Qingzhao didn't seem to be showing any abnormality. He was sitting on a stool drinking tea. When he saw her come in, he stood up to greet her.

"I'm fine now. Thank you for your hard work. Come and sit down. You can rest here this afternoon. I'll take care of anything else."

Huanxi waved his hands and said with a smile:

"That's all, that's all. I didn't run around all morning for nothing. I'm done. I have nothing to do this afternoon, so let's go out and have some fun."

"Ah? So fast? Doesn't that mean I haven't done anything?"

She looked extremely annoyed, and successfully made Huanxi laugh.

"Isn't this a special situation? Don't worry, there's work, plenty of it for you to do."

"Okay, okay, please give me whatever you want, my lady. I will absolutely obey you." He said as he bowed.

The atmosphere was joyful, and the two checked out of the room and went to the Treasure Pavilion.

Although it was past dinner time, there were still quite a few people there. I glanced at the dishes on the tables in the lobby and found that most of them had one or two fried dishes.

Huanxi thought to herself: This Zhenxiu Pavilion is quite obedient. When they sell fried food, they actually serve one or two side dishes.

They didn't ask for a private room, they just had a quick meal in the lobby and planned to go for a walk in the town.

Now that the weather is getting warmer in May, people on the street are wearing thinner clothes.

What is suitable to eat in summer?

She remembered that ice cream already existed in the Tang Dynasty and was called Sushan.

In the Song Dynasty, a dessert called "Ice and Snow Cold Yuanzi" was popular.

Don't ask her how she knew that.

She loves watching short videos about intangible cultural heritage and even bought a premium membership on a certain website.

In modern times, there are more foods that can relieve summer heat.

Ice jelly, cold noodles, ice cream, cold noodles, ice rice balls, fried yogurt, lemon tea, fruit salad, milk tea...

She can make ice jelly and cold noodles, and she can replicate them once the tomatoes are grown.

Ice cream doesn't work... She has only seen how to make ice in novels, and it's useless in real life.

Liangpi is also good. During the epidemic, I had nothing to do at home and made these foods. After the lockdown was lifted, I gained more than ten pounds...

And the rest... basically all need ice...

Thinking of this, even the food in my mouth has no taste... Wait...

The earliest origin of saltpeter ice making was in the Tang Dynasty!

In other words, in this time and space, this method may have already existed, but due to cost and technical limitations, it has not been introduced to the public.

Thank God! Thank God!

Thank you! Intangible Cultural Heritage short video creators! Thank you!

Otherwise, how would she know about these things?

When she thought of this, she felt that the food in her mouth became delicious again.

Xu Qingzhao watched the girl opposite him, her face changing from dark to pale, and knew that she was probably having some wild ideas in her head again...

"Qing Zhao, do you know...how to make ice?"

Xu Qingzhao: "What is it?"

"Just make ice cubes at home..."

"Huanhuan, don't talk nonsense." Her tone instantly became alert.

"What's wrong? I didn't say anything?" Huanxi looked confused.

Xu Qingzhao shook his head at her, and the two of them quickly finished their meal and returned to the backyard of Shuxiangju.

The children have all changed into new clothes and look clean and refreshed.

Even Yunchuan could see her longing for future life on her cold face.

"You guys stay in the front yard and don't let anyone in. We have something to discuss." Huanxi said.

The children dispersed, Huanxi exchanged glances, and the two went into the main house and closed the door.

"What's wrong, Qingzhao? Why are you being so mysterious?"

Xu Qingzhao looked serious, sat down, looked at her and said:

"Do you know what you just said?"

"What?"

"That's a court secret. Only the royal family can use it to make ice. I heard that a few years ago, someone made ice cubes from ore. To avoid a monopoly, the royal family kept the information secret, and from then on, it could only be used by the royal family."

Upon hearing this, my joy immediately deflated like a deflated ball.

"Ah, so if you say so, even if I know this method, I can't make ice?"

"Huanhuan, can you make ice?"

"Maybe, but I need to do more experiments..." She was good at chemistry in her previous life.

Saltpeter, chemically known as potassium nitrate, is a white crystalline solid that is easily soluble in water.

Wait, wait, wait, wait...

KNO₂ (saltpeter) + H₂O (water) = KOH (potassium hydroxide) + HNO₂ (nitric acid)

Chemistry teacher!

Learn math, physics and chemistry well, and you won’t be afraid to travel around the world!

Seeing her talking nonsense, Xu Qingzhao was a little scared...

"Huanhuan...are you okay?"

Zhao Huanxi was about to jump up at this moment. How could she forget this knowledge? It was in her mind.

"Qing Zhao, I can make ice. If I'm not mistaken, then not only can I make ice, I can also make explosives!"

"what?!"

Huanxi ignored her shock and urged her to get a pen and paper. If this could be calculated, then she would no longer be afraid of imperial power or the dog emperor.

If anyone attacks her, just throw tons of explosives at them and blow them all up.

By the time Xu Qingzhao got the paper and pen, Huanxi had already sketched out countless equations in his mind.

(For reference only, do not imitate!)

The main components of black powder are potassium nitrate (KNO?), sulfur (S) and charcoal (C). The chemical equation for its explosion can be expressed as:

[2KNO_{3}+S+ 3C \xrightarrow[\text{点燃}]{} K_{2}S + N_{2} \uparrow + 3CO_{2} \uparrow]（看不懂吧……我也看不懂）

In this reaction, potassium nitrate acts as an oxidizing agent, providing oxygen atoms to fuel the combustion of the sulfur and charcoal. The sulfur and charcoal act as reducing agents, undergoing a redox reaction with the potassium nitrate. Upon ignition, these components undergo a violent chemical reaction, producing gases such as potassium sulfide (K₂S), nitrogen (N₂), and carbon dioxide (CO₂), while simultaneously releasing significant amounts of heat and light.

The teacher was giving a splendid lecture, and Huanxi was taking notes below...

"Remember these! You won't need them, but if you ever travel back to ancient times, you can make them and use them to defeat bandits."

This is also what the humorous teacher said.

Unexpectedly, my words came true...

But it wasn't the bandits who were attacked... it was the Emperor...