After traveling to ancient times, I relied on my husband to win

He did it as soon as he said it. Qin Yan felt distressed when he saw Jiang Zhi sweating all over.

Documents record that people mined a large amount of saltpeter when making gunpowder.

With a target in mind, Qin Yan went straight to the Ministry of Industry and took away a cart of saltpeter from the place where gunpowder was produced.

As for Qin Yan's position in the Ministry of Industry, he was deeply impressed when Qin Yan started to show off his skills. It's just a small saltpeter, nothing serious.

Qin Yan also found a few workers and started making ice in an empty yard.

Each person is given a large piece of saltpeter. Prepare two basins, one large and one small. Fill both basins with water. Put the small basin into the large basin. Make sure the water in the large basin covers the small basin. Add saltpeter to the large basin. Cool it down. The small basin will slowly freeze. After the water in the large basin solidifies, the saltpeter will reappear. Then scrape it off and continue making ice.

Qin Yan mixed the prepared ice with some cut fruits and gave it to the workers who were still watching the ice-making process.

"Wow~ It turns out that eating ice cream in summer is the best. My husband, you should try it too. It's super delicious."

"it is good."

Seeing how thoughtful his brother was, Rong Jiuxuan rolled up his sleeves and became self-sufficient, packing himself a large smoothie and adding his favorite fruits.

"Wow, it feels so good. It feels like I'm alive again."

"But, brother, although saltpeter was used to make ice, with so many people, only this much was made. Half a truckload of saltpeter was used up. This ice can't be made much at all."

Rong Jiuxuan talked while eating, and Jiang Zhi also looked at Qin Yan.

Qin Yan told her not to worry and to continue eating.

"Nothing, I'm just trying this method out. If it doesn't work, try another one."

Then he brought a small vat as high as a calf, poured boiling hot water into it, covered it with a dense cloth, sealed it, tied a rope to it, and sank it to the bottom of the well.

After finishing everything, Qin Yan clapped his hands and said, "Okay, let's wait three days and come back to see."

Everyone else left. Jiang Zhi didn’t understand, but she believed in Qin Yan and followed him obediently.

???

The most confused one was Rong Jiuxuan. Wasn’t this about making ice? What was going on?

"No, brother, aren't you making ice? Just, is that all?"

"Yes, what else?" Qin Yan looked at him strangely, not understanding what he meant.

"No, I mean, why are you using hot water? After all, it should be easier to freeze with cold water, right?"

"Well, read more books in the future. This is a method that our Chinese ancestors have tried. It is similar to the principle of boiling a kettle. It is a process of adiabatic expansion and cooling of gas. Forget it, you won't understand if I tell you more. Just come and see it in three days."

After Qin Yan finished speaking, he took Jiang Zhi away. Jiang Zhi felt cool after eating the smoothie, but her joy soon turned into sorrow.

Qin Yan took away her Bingbing, "You can't eat anymore today, dear. You are pregnant now, so you can't eat too much cold food. Otherwise, you will get a stomachache and feel uncomfortable. What should you do? Be good, you can only eat a little a day. After you finish today, you can eat tomorrow."

Jiang Zhi was not happy, but Qin Yan's words implied that he was worried that she would have a stomachache. There was nothing she could do, so she unilaterally broke off her friendship with Qin Yan for a few days.

These days, Qin Yan fed Jiang Zhi food and Jiang Zhi ate it, but when she faced Qin Yan, she would glare at him, then snort and turn her head away without looking at him.

Jiang Zhi didn't talk to Qin Yan for two days, and Qin Yan felt helpless. "It seems that she is really angry this time."

Today was exactly the third day, so he went to the well next to the kitchen and asked someone to pull the things up. Jiang Zhi and Rong Jiuxuan also came to see.

Qin Yan opened the lid and found ice cubes inside, which were bigger and more numerous than the ice made from saltpeter.

It is a relatively whole piece of ice, not small pieces of ice like saltpeter.

When Rong Jiuxuan saw the ice, his eyes widened, his mouth opened wide, and he excitedly circled around the jar.

"Oh my god, such a big piece of ice! Hehe, it's so hot, I can sleep with the ice in my arms."

I also reached out my hand to feel the sub-zero temperature.

"Wow, it feels so cool. It's refreshing."

When the workers around saw that there was such a big piece of ice, they kept looking at it and whispering to each other, talking about this magical scene.

"Oh my god, I didn't expect that Lord Qin could really make ice, and it's such a big piece of ice."

"Yes, yes. I didn't believe it when Lord Qin said he wanted to make ice. Who would have thought that he would actually make it?"

"Hey, you don't know, this Lord Qin is a god. I heard that many things of that noble family were made by him. For example, the bicycle sold in Century Square, you have never seen it, but it was made by Lord Qin. I heard that even the palace has it, which shows how capable he is."

"Oh my, that's really amazing."

"Who says it's not?"

Qin Yan didn't care about other people's opinions of him. He just looked at Jiang Zhi who was also playing around with ice like Rong Jiuxuan.

Jiang Zhi was also surprised to see the ice. She never thought that she could see ice in the summer in ancient times. Those who could use ice in the summer were considered to be high-ranking nobles.

Jiang Zhirong took a piece of ice from the one that Jiuxuan had chiseled, then happily returned to Qin Yan and held up the ice in her hand to show him.

"Haha, we can also achieve ice freedom in the future ~ la la la ~"

"Yes~ Okay, okay, stop jumping. The ice is cold, don't keep holding it. Give it to me."

Qin Yan held Jiang Zhi's hand holding the ice cube, and Jiang Zhi obediently spread out her hand to reveal the half-melted ice cube inside.

Qin Yan took the ice and threw it towards Rong Jiuxuan, then gently took out a handkerchief from his arms and wiped Jiang Zhi's icy hands.

After wiping the water off, he held his own hand over it, "Your hands are a little cold, Nuan Nuan."

"Hehe, okay~"

Rong Jiuxuan was hit on the back and turned around suddenly.

"Who, who attacked me!!"

As a result, when he turned around, he saw his brother holding his sister-in-law's hand and kissing her affectionately. He turned his head away embarrassedly, thinking that there was no need to look anymore because the only one who could hit him here was his brother.

It goes without saying that his brother must have felt that the ice he made had frozen his sister-in-law's hands.

He pouted and imitated his brother. Oh, it must be that boy who broke the ice and even froze my dear wife~

Humph, Rong Jiuxuan felt aggrieved but he didn't say anything and continued to chisel his ice.

I didn't have any idea what to do, I just wanted to break the ice into pieces, just for fun.

Finally, Qin Yan felt that the person sitting on the ground and frantically chiseling ice was like a lunatic, so he pulled Jiang Zhi away. Only someone would come here to bask in the sun, not even staying under the tree.

The only thing left there was Rong Jiuxuan, who was busy chiseling ice. No one knew why he was so persistent.

When Qin Yan left, he asked the workers to follow his method and sink a few more jars to the bottom of the well, so that they could be used in several more wells.

Finally, Qin Yan felt that there was still too little ice and it took too long to make. His family would need it, and the palace would probably want some too…

The palace!!

Qin Yan slapped his forehead, it was great that he had this golden thigh, all he had to do was give some advice.

He did it right away and had someone carry a jar of ice to the palace.