In the Zizhuxuan tea room, Qingwen temporarily entrusted Jin Chu'er to Liu Ruyan.

During the day, Jin Chu'er learned to make tea and make refreshments with Liu Ruyan, and lived with her and Caidie at night.

Liu Ruyan and Caidie greeted each other warmly, and one more person would be more lively.

And there are more and more guests who come to drink tea, and they are not idle all day long, and they are feeling a little too busy.

Jin Chu'er sent Qingwen out of the tea room door, glanced at Baoyu who was standing in the distance, and said softly: "Girl, don't worry, I won't do stupid things anymore." ”

This is for Qingwen, and it is also for herself.

Zizhuxuan is in charge of food and housing, can still work by himself to earn wages, and has two kind girls as companions, Jin Chu'er lives here, which is very reassuring.

Since then, Zizhuxuan has another beautiful girl covered with tulle.

Qingwen asked Xiaohong to ask Jia Yun something, and by the way, she talked to Jia Yun and walked towards the bamboo forest.

Mu Nanfeng, who was quiet and warm, smiled when he saw Qingwen who came from the scene.

"Miss Qing, are you here?"

He said it calmly and naturally, as if he was waiting for her.

"Mu Gongzi, I'm sorry to disturb you Wen Shu."

Qingwen smiled, "Are you still used to eating in Zizhuxuan these days?" Wen Shu is the most laborious, and he must eat better. If you don't feel comfortable eating, ask the cook to cook it for you. ”

"It's already good," Mu Nanfeng smiled warmly, "Nanfeng only asked for three meals to eat and dress before, and he didn't dare to ask for too much." The days since the opening of Zizhu Pavilion have been the most enjoyable days of my life. ”

While the two were talking, Xiaohong hurriedly walked over, and after saluting Mu Nanfeng respectfully, she said to Qingwen: "Girl, Second Master Yun said that the ice workshop is generally only used by the rich and noble people of the official palace. If we want to use it, we have to tell the comprador in the house to bring some for us every day. ”

"Oh, that'......" Qingwen hesitated.

She didn't want to do these things through the Jia Mansion, and if she could, she wanted to try not to have unnecessary contact with the Jia family.

"Girl, is it because it's hot, do you want to use ice to cool off?" Mu Nanfeng suddenly said, "If it's just a simple coolness, Nanfeng can help." ”

"Mu Gongzi has a way?" Qingwen asked in surprise.

"Well, do you know that bitter salt can make ice?"

"I ......" Qingwen wanted to say that she knew, but she didn't dare to say it.

Isn't bitter nitrate saltpeter? In a previous life chemistry class, I learned that saltpeter and water can be condensed into ice by mixing them in a certain proportion.

It's just that this doesn't seem to be something that a boudoir woman like her should know. What's more, she is still a pseudo-young lady who used to be illiterate in big words?

"I ...... I don't know, would you like to tell me about it? Qingwen asked with wide eyes flashing and very humble.

"It's not good in this season now, probably in autumn, and there will be a layer of hoarfrost on the walls of some damp places, such as farmhouse stoves and thatched houses, which is bitter nitrate."

Mu Nanfeng said, "Scrape off that layer of hoarfrost, add water and boil it to refine bitterpeter." Saltpeter can quickly cool down water and eventually condense into ice. The melted saltpeter can also be boiled again and can be coagulated into lumps. ”

"This thing works very well, but it doesn't work right now."

Qingwen turned back to Xiaohong and said, "Go and ask Brother Yun'er, where can I buy saltpeter?" With saltpeter, we can make ice at any time, and we don't have to buy it every day. ”

"Wait, bitter nitrate is not easy to buy," Mu Nanfeng stopped Xiaohong, who was about to leave, "bitter nitrate is the main raw material for making gunpowder, and the imperial court does not allow people to buy and sell at will." The girl needs it, I refined some in the old year, and I don't know if it's enough to give it to the girl? ”

"Enough, enough, not a lot, Childe just give me a little is enough. I don't need to freeze the water, I just need to cool it down to the point where it's going to freeze. Qingwen is not polite.

In her heart, she would rather owe Mu Nanfeng a favor than the Jia family.

Xiaohong went to Zizhuxuan to summon a handyman, and went to his place with Mu Nanfeng to get saltpeter.

The gentle and handsome Mu Gongzi secretly laughed at himself as he walked: It's so unproductive! What kind of knowledge do you show in front of a girl?

The handyman carried back a large bag of white crystals, and held a piece of white paper with the use of saltpeter in his hand, and Qingwen looked a little dizzy.

"Why did Mu Gongzi bring so much? Can he leave enough for himself? ”

"Childe said that he still has them there, please use these for the girl first, and he will refine them for the girl in the autumn. It can be used to cool off, make cold food, and ice fruits. ”

"Ice fruit, make cold food?"

Qingwen set aside a piece of saltpeter, and asked the other handymen to take it to the teahouse, "Go to Miss Liu, and ask her if she can make ice with bitter nitrate?" In the future, she can serve ice fruits to guests and make cold food. ”

Liu Ruyan was overjoyed and immediately started.

Mung beans, glutinous rice flour, milk and other raw materials are ready-made, and after a while, she came out with a bowl of ice and snow cold balls.

Caidie followed behind, holding a plate of colorful chilled fruits.

"I used to make ice with bitter nitrate, and when I was in that place, I would make cold food for guests to cool down in the summer. A few days ago, a guest asked, I was about to tell the girl, but I didn't expect the girl to remember first. ”

"What do I remember? It's a coincidence. It just so happens that I need ice, and it just so happens that Mu Gongzi has bitter salt in his hand that can make ice. ”

Qingwen took a small bowl and divided the fruits and cold food, and ate a few with Ruyan, Caidie, and Xiaohong.

The remaining small bowl was placed on the small coffee table where Mu Nanfeng was reading.

"Sister Liu, in the future, prepare some cold food and fruits for Mu Gongzi every day to cool off, and give him the grace of bitter salt."

Ruyan winked at her mischievously, and laughed coquettishly: "Why is Miss Qing so polite to Mu Gongzi?" Did he want you to be grateful to the girl for giving her bitter salt? Didn't you see that he didn't come back with him? I'm afraid that the girl will say words of thanks, right? ”

"Whew! What is my sister talking about? What else could there be but gratitude? ”

Qingwen didn't want to discuss this topic, so Chong Ruyan raised her eyebrows and took Xiaohong to find Baoyu.

Liu Ruyan smiled meaningfully, and went back to the tea room to make cold food.

With the saltpeter sent by Mu Nanfeng, Zizhuxuan has more cold drinks, cold food, and ice fruits, and the guests are even more surplus every day.

Guests who come from afar to offer incense, in addition to fasting, generally order a cold dish to cool down the heat.

There are also young men and women who come to order a cold drink and a bowl of cold food, sit on a bamboo chair in the bamboo forest, and pass the time quietly.

And the good boy who sacrificed himself for others lacked the company of ice every night.

But he held a delicate sachet in his hand, and imagined a certain girl sleeping peacefully in the cool comfort he had created for her, as if he were bathed in the cool wind, and did not feel how hot the summer night was.

……

On the way home, Qingwen asked Xiaohong to go down and follow the carriage for a while, and beckoned Baoyu to the car.