This story is about a small country called the wild kingdom and a big country at war, later, the soldiers of the wild kingdom were trapped in the mountains, hungry and cold, because it was winter, they could only dig some grass roots and bark or something to eat, the result was a coincidence, someone dug this kind of yakava, peeled the skin, the meat inside is white, a bite of crispy sweet and sweet, the most important thing is that some people have eaten this kind of food and feel refreshed, later, these soldiers rely on these yams to survive, and finally fight out of the siege to regain the lost territory.

In addition, Yan Yan turned over the "Shennong Materia Medica", which also had a record of yams, and for this reason, Yan Yan moved out the "Shennong's Materia Medica".

"It's a pity that my people only found these original plants in the mountains this year, if they can collect some seeds this year, they can be planted on a large scale next year, it is said that this thing can be planted on a barren mountain without picking the ground."

"You mean this kind of thing can be used as food at a critical time?" Lu Duan was interested, and squatted down to make it carefully.

He has also been besieged and starved, so knowing more of a wild vegetable that can satisfy hunger can really save his life when it is critical.

"Back to my father, yes, Shanhua's sister-in-law has dug more than once, she said that many local people go to the mountains to find this kind of rhizome when they are hungry, but there is a point, the outer skin of this rhizome will itch when some people touch it, and small pimples will grow one by one, so they think it is poison, I have seen it in the book, it is not poison, and taro, some people will itch when they touch it, but it will not be after cooking." Yan Yan guessed Lu Duan's thoughts, and specially explained a few more words.

"You mean this edible thing you found with just a story?" That's what Menno was focused on.

As soon as he said this, everyone realized that this matter was indeed not simple.

However, Li Ji and the others quickly remembered the cake and hot pot that Yan Yan had figured out with a few words, and they were not surprised.

"That's a coincidence." Yan Yan learned how he met Shanhua's mother and daughter and how he learned about this sweet potato.

"I'm ashamed, I asked myself if I read a lot, but compared with Sister Yan'er, I realized that my knowledge was very shallow." Li Ji shook his head and said.

"Brother Prince's words are wrong, Brother Prince's responsibility is like the weight of Mount Tai, what he has learned and learned is to take governing the country as the first priority, how can he have time to read this kind of idle book?" Yan Yan said busily.

She knew very well in her heart that she had borrowed the benefits of crossing, and if she was really talented and learned, she couldn't compare to these people.

"Okay, let's not talk about this, Prince Fang Cai said that you still have one more thing to discuss with you, what is it?" Yan Peng asked.

"This, it's also a coincidence, the last time I read the missionary's notes, there was another discovery, the book recorded an incident, that is to use a kind of distilled liquor can make wounds heal faster, can also promote high fever patients to reduce fever, at that time I did not understand what this means, until the emperor's eldest grandson fell ill, I boldly tried, I know that it is indeed effective."

Yan Yan had already added this text with charcoal to the missionary's notes, so he dared to push this thing out.

"What do you mean by distilled spirits?" Several voices asked almost simultaneously.

"At first, I didn't understand, but then I needed to use distillation to make my own rouge paste, so I boldly tried it, and then I knew that the distilled liquor was stronger and more mellow, presumably this is the so-called distilled spirit, I originally wanted to open a distillery to sell this kind of distilled spirit, but then I thought about it, it was too much food, so I might as well tell you this method, and use this distilled liquor in the army to treat wounds, which can save more lives." Yan Yan said.

As for how to do it, Yan Yan herself can't say it, she just told everyone some simple steps, and let those military doctors study the rest, which is more in line with the rhetoric she is looking for.

What Yan Yan didn't expect was that after this day, her fame and fame rose to a new level.

It turned out that after the prince went back, he talked to Li Cong in detail about his knowledge in Mingyuan for half a day, from yamsa to wheat to rice and then to distilled liquor.

All of a sudden, Yan Yan's door suddenly became lively, some wanted to befriend her for the emperor's praise, some came to see her back garden out of curiosity, and some really liked her and wanted to befriend her, such as Zhou Wan, Wu Yu and Xu Ruqing.

Of course, that's for later.

And Yan Yan and Lu You returned to Lu's house the next day, this is what Lu Duan meant, he should leave for the north in a few days, and he wants to get together with the children more before leaving.

When Yan Yan and Lu You entered Mrs. Lu's upper room, they learned that the three generations of aunts and grandmothers of the Lu family had returned to their parents' homes, and the concubines were all there, in addition to a few elders with a bit of identity in the clan, and a room full of people, Mrs. Lu was sitting on the Arhat Collapse in the south, and the position opposite her was empty.

To Yan Yan's surprise, Mrs. Lu seemed to have regained her previous friendliness, and when she saw her enter the door, she not only exempted her from kneeling, but also ordered her to sit in the vacant seat opposite her, took her hand and asked her if she was tired in the past few days, whether she slept peacefully, whether she vomited, etc.

Yan Yan answered one by one.

"I heard what your father-in-law said yesterday, and you did him a great favor again, so I specially asked me and your grandmother to take care of you more, child, what do you have to eat, just say, according to my meaning, Da Lang is not at home, you better move back to live, and it will be more convenient for us to take care of you." Zhu also said with a smile.

"Yes, sister-in-law, you better move back to live, everyone can take care of each other together, so that grandmother and mother don't feel at ease." Yan Yu also helped persuade him.

"Thank you mother. It's just that there are still a lot of things on my side that I need to keep an eye on, but I promised my grandmother and mother that I would come back to see you as often as possible. Yan Yan ignored Yan Yu and replied to the Zhu family.

The Zhu family didn't have any sincerity, and when they saw Yan Yan's refusal, they didn't persuade him very much.

Lu Jing, who was sitting on the side, was curious, "Eldest nephew and daughter-in-law, what did you do to help my eldest brother?" ”

"On the handling of wounded soldiers in the army." Yan Yan knew that she couldn't hide this matter, and she didn't want to hide it, she had already rescued Li Xi once before.

"You know that, too?" It was Lu Han who asked.

"I don't understand it, but I know it occasionally." Yan Yan replied.

"What do you mean by knowing something occasionally? I've found that you've known too much for most of the year. After Lu Han finished asking, he glanced at Yan Yu.

Yan Yu happened to look in this direction of Yan Yan, and when he saw this, he turned his head over.

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