Zhiji stood next to Wen Wan and helped to fan the wind. Seeing Wen Wan always sighing, he asked: "Miss, since the beginning of summer, I have seen that you can't cheer up all the time. What's wrong?"

"hot……"

Wen Wan was lazy and spoke only a few words.

"Miss, it's summer. Even if the weather is a little hot, it's normal. Because you're afraid of the heat, didn't King Yun go get ice cubes for you?"

Zhiji smiled, she had never seen the young lady so afraid of heat before. As soon as summer came, all the ice cubes in the palace were used up. No, today I found out that all the ice cubes in the mansion were used up.

Gao Yeyun couldn't bear to let Wen Wan get hot, so he hurried to the palace to get ice cubes.

"oh……"

Wen Wan still couldn't cheer up, and actually missed the days in the laboratory very much. At least there was air conditioning, so he didn't have to worry about the cool weather.

Seeing that she was still lazy, Zhiji didn't bother her, and just left her alone to be quiet.

In this hot season, if you talk too much, you will get upset.

"Xiao Wan'er!"

Gao Yeyun ran over from a distance, followed by Gao Yejing.

Wen Wan raised his eyelids and said leisurely: "Well..."

Gao Yeyun approached Wen Wan and asked, "What's wrong? I'm still weak."

"hot……"

Wen Wan still answered in one word.

"King Yun, Miss is afraid of heat. I wonder where the ice is now when you took it?" Zhiji asked.

Gao Yeyun smiled and asked Gao Yejing behind him to take out the ice cubes and said, "Xiao Wan'er, come on, praise me. This is from the Queen Mother's palace!"

"good……"

Wen Wan was still listless.

Zhiji took the ice cube, put it in a basin, held the basin next to Wen Wan, and fanned it.

Wen Wan felt a slight chill and finally regained his mood. He looked up at Gao Yeyun and saw that his head was covered in sweat and said, "Sit over here. You see you are covered in sweat.

I'm sorry you made such a trip."

Gao Yeyun saw Wen Wan caring about him so much. Although he felt hot, the heat seemed to have dissipated all at once, and said: "Xiao Wan'er, as long as you care about me, I won't feel hot anymore." "That's all nonsense.

Come here quickly! If you have heat stroke, it's no joke." Wen Wan stretched out his hand and pulled Gao Yeyun to his side and said.

Gao Yejing on the side was unhappy and said: "Second sister-in-law, I have done everything for you. You only care about my second brother, but you don't love me at all."

"Haha, look what you said, then just sit next to Zhi Ji and let everyone cool off around this basin of ice." Wen Wan smiled.

"In this case, it's my second sister-in-law who loves me."

Sitting next to Zhiji, it feels cool even if it is hot.

Several people sat around, and Gao Yejing said: "There is still a long time in summer, so we can't go to the palace every day to get ice, right?"

Wen Wan felt the coolness, and now his mind was much clearer, and he said: "That makes sense. The ice in the palace is still used last winter. There are so many people in the palace, and it is a bit tight for me to use.

Where can it be given to us? It’s up to us to think of a solution ourselves!”

"There is nothing we can do now. We can only wait until winter and store more ice. We won't have to worry about tomorrow." Zhiji said.

Wen Wan sighed and missed the air conditioners in modern life. Even if it is not an air conditioner, even a fan is good.

"It's not impossible, let me think about it."

Making ice is not difficult, Wen Wan suddenly thought of it and asked: "Is there calcium nitrate in the house?"

Several people looked at Wen Wan in surprise. Gao Yeyun said: "Xiao Wan'er, what is this sour thing you are talking about?"

"Calcium nitrate is...it is saltpeter. Do we have saltpeter in our house?"

"We don't have them in the mansion, but they are sold on the streets. It's very common to make fireworks," Gao Yejing said.

"Xiao Wan'er, what do you want this saltpeter for?"

Gao Yeyun didn't understand. Could it be that Wen Wan still wanted to set off fireworks?

"This will be easy to handle."

Wen Wan said with a smile, at least he didn't have to take out the calcium nitrate from the medical space to arouse their suspicion.

"Second sister-in-law, don't be so enigmatic when you speak, we don't even understand what you are talking about."

Gao Yejing felt that most of the time what Wen Wan said was unbelievable.

"If we have saltpeter, we can make ice cubes!"

Wen Wan was eager to try it. Modern people relied on refrigerators to make ice cubes, and there was almost no need to do it themselves.

However, this will not trouble Wen Wan, after all, he knew this principle early in his medical studies.

"Saltpeter can make ice? Second sister-in-law, are you kidding me? Those are the things inside fireworks. Logically speaking, they should be ignited. How come it can make ice instead?"

Gao Yejing just didn't believe it.

It's no wonder that they don't know about such a thing, and it's normal to be suspicious.

Wen Wan explained: "In fact, the principle is very simple. Saltpeter can dissolve in water and absorb a large amount of heat, causing the water to cool down until it freezes."

Gao Yeyun was also confused, but he still believed in Wen Wan. So many things Wen Wan had done before were weird, but they were all successful, right?

"Anyway, let's just buy the saltpeter first. I want a lot of it. I'll make a little more for us to use throughout the summer." Wen Wan was eager to try it. It had been a long time since he had done an experiment.

Immediately, Gao Yejing sent his servants to the street to buy saltpeter.

After getting the saltpeter, Wen Wan asked someone to fetch water, and the large and small basins were filled with water.

Wen Wan put the saltpeter in and an immediate change occurred.

Seeing this magical scene, everyone around was surprised,

Gao Yeyun said: "Xiao Wan'er, you are so amazing. Now there is no shortage of ice in our house."

Wen Wan smiled and said: "The magic thing is not me, but the saltpeter. I didn't discover the saltpeter."

"Second sister-in-law, how do you think of this floor? We only know that saltpeter is used to set off fireworks, but we never thought it could have such a function."

Gao Yejing was also full of praise.

"Stop flattering me, it's better to put the ice cubes in the cellar quickly!" Wen Wan looked at the ice cubes full of ice cubes and was secretly happy in her heart.

Although there is no air conditioning or refrigerator, there is still saltpeter.

"Wait, leave a basin of ice." Wen Wan said to the servant.

"Yes." The servant put down the basin of ice in his hand.

Gao Yeyun asked: "Xiao Wan'er, what are you..."

"I'll make you some ice cream, do you want to eat it?" Wen Wan felt that summer is complete with ice cream.

Gao Yeyun was naturally happy when he heard that Wen Wan wanted to make food for him. However, he had never heard of this name and he really didn't understand it, so he asked: "This ice..."

"Ice cream." Wen Wan repeated.

"Oh, it's ice cream. What is this ice cream? Is it made of ice?" Gao Yeyun was puzzled.

Gao Yejing, who was beside him, looked confused.

Wen Wan smiled and said: "That's natural. It's a kind of dessert. It's delicious, cool and sweet. It can be said to be a holy treat for relieving the heat."

Gao Yeyun immediately beamed when he heard it was sweets.

"Tell the kitchen, I need cream and milk. No, no, no, you don't have milk, so let's use goat's milk! I also need some pulp and fruit."

Wen Wan ordered the little maid behind him.

After hearing this, the maid immediately went to the kitchen to prepare.

After everything was prepared, Wen Wan used saltpeter and put ice water into it as a refrigerant. He used goat milk as raw material, stirred and condensed it, and then added various pulps or fruits with different flavors to make ice cream.

Gao Yeyun watched Wen Wan's hands moving and found it interesting, and asked: "Xiao Wan'er, how did you come up with this?"

"No matter how I came up with it, you try it and see if you like it?" Wen Wan said, handing a bowl of ice cream to Gao Yeyun.

Gao Yeyun hurriedly took it and ate it with a spoon. As soon as he took it into his mouth, he tasted it and said: "Xiao Wan'er, this thing is even more delicious than cake. Thank you for thinking about it!

"

Gao Yejing didn't like sweets very much, but when he saw Gao Yeyun's flattery, he didn't know whether it was true or not, so he wanted to try it himself.

Gu took a bowl and took a sip, but couldn't stop.

Not to mention the pleasant taste, but the cold feeling is unforgettable.

"Second sister-in-law, your craftsmanship is really skillful." It was rare for Gao Yejing to be so happy after eating sweets.

Seeing that Wen Wan had made a lot of it, he asked Zhi Ji to taste it together.

Everyone ate with gusto. Gao Yeyun alone had already eaten three bowls. When he reached for the fourth bowl, Wen Wan stopped him.
To be continued...