"I've seen four uncles and four aunts." Yan Yan came to the front hall and saluted Yang Yongan and Gu Wange.

"Yan girl is here, come and sit." Gu Wange enthusiastically called Qian Yan to her side and sat down.

"Fourth Aunt Xie." He said sweetly.

"Yan girl, have you eaten?" Gu Wange asked.

"Don't hide it from Aunt Si, I just came back from Zhuangzi outside the city, and I haven't had time to eat yet!" Yan Yan said.

"Then you talk to your fourth uncle first, and the fourth aunt will let someone cook you something delicious." Gu Wange finished with a smile and went out with the maid.

"Yan girl, what's the matter with coming over today?" Yang Yongan asked.

"Fourth uncle, can't I come if I'm fine?" Tilt Yan asked rhetorically.

"You girl, I don't usually see you come to play, you will come to the fourth uncle if you have nothing to do?" Yang Yongan didn't believe it and said.

"Hehe, look at what the fourth uncle said, I'm not busy!" He said with a dry smile.

Yang Yongan glanced at her, and Dazhu said: "I know you're busy, but you are outside all day, you have to pay more attention to safety, there are no more bad people in the capital than at home." ”

"I know the fourth uncle, but what happened to Jingzhong?" Qian Yan asked.

"There's no big deal, but there was a flower thief in Beijing recently, you should pay attention to safety by yourself, don't go out alone." Yang Yongan said.

"I understand." The ancient flower thief was the most hateful, just imagine that a woman has no name, there will be people pointing fingers in the current belt, not to mention the ancient times when the name is more important than life.

"By the way, why did you come to me?" Yang Yongan saw that she remembered it in his heart, and changed the topic and asked.

She asked Xiaoliu and the others to bring in the sweet potato flour.

Yang Yongan opened it and looked at it, with a puzzled expression: "Is this the white noodles for me?" ”

Qian Yan shook his head: "Although this is flour, it is not white flour, but sweet potato flour." ”

"Sweet potato flour?" Yang Yongan looked curious.

"This is what I just researched these days, and after grinding the sweet potatoes finely, the precipitated flour is like this after drying." Tilt Yan explained.

"This year's sweet potato harvest is very good, and all places have reported it, and I think the people can have a good year this year. But is this grinding into powder easy to make? Yang Yongan asked.

"As long as you have the tools, making sweet potato flour is very simple. Although this sweet potato is delicious, it is somewhat monotonous when eaten only boiled. And it's easy to keep it well, so it's okay if you let people grind some of the excess and eat it slowly. Tilt Yan said.

"What tools are needed? If it is appropriate, I can mention it to the emperor. Yang Yongan asked.

"This is what I came to say to the fourth uncle, I recently found a tool in an ancient book, called stone mill, it has a lot of uses, if we make a large number of them in the north, it is also a good thing for the people." He said with a smile.

"Stone mills? Is it really as good as you say? Yang Yongan asked with some confusion.

"What does the fourth uncle think of this sweet potato flour? Is it fine? He asked with a smile.

Yang Yongan nodded consciously.

"The fourth uncle is looking at a few other bags of things." Yang Yongan opened the cornmeal bag.

Yang Yongan opened it and saw that it was all very fine flour. There is also some rice, although it is not one by one, it is not very broken.

"Are these all ground with the stone mill you said?" Looking at the same cornmeal as the one bought in the store, Yang Yongan asked in disbelief.

The cornmeal brought by Tilt Yan is almost the same as the one bought in the store, and it is very delicate.

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