Yun Xuan looked at the note in his hand, and didn't know what Ergou wanted to express for a while, so Yun Xuan had to put away the note, put this matter down for the time being, and ask him when he had the opportunity to meet Ergou.

His wedding to Liu Hanyan is imminent, even his father will not turn a blind eye to him, after all, General Liu's identity is there, so Yun Xuan is not worried that he will be hurt in the palace.

But open guns are easy to dodge and dark arrows are difficult to prevent, sometimes killing people is not about dancing with swords, a small accident caused by inattention can kill a person.

Isn't that how the original owner was killed? Yun Xuan felt that it was more safe to stay at home during this time, and not to run outside if there was nothing to do, if there was really a case, it would be a joke.

Yun Xuan chatted with Ah Huan for a while and returned to the room, and Yun Xuan still remembered when he won the title of Bacchus outside the palace. The Xuantian system has given itself an ability that can be exchanged, and there is no need to wait for a while at this time.

"System, I have the right to exchange once, can I redeem anything" Yun Xuan closed his eyes, his consciousness sank infinitely, and then he saw a bright light, and then a familiar picture appeared in Yun Xuan's sight.

"I want an immortal body" didn't hear the reply from the Xuantian system, Yun Xuan assumed that the Xuantian system acquiesced, and then said his own conditions.

Yun Xuan didn't know if the system could do this, but Yun Xuan felt that it was necessary to give it a try, what if it was realized? At that time, whether it is the crown prince, the two kings, or even the father, Yun Xuan will not pay attention to it.

"Ka" was obviously a quiet and peaceful appearance, and I don't know where a lightning bolt fell directly on Yun Xuan's body. Yun Xuan was a little dazed, he was struck by lightning, Yun Xuan panicked, hurriedly looked at his body, and breathed a sigh of relief, fortunately it's okay.

"I want to think of a way to exchange it for making fine salt" Yun Xuan raised his head, held his head in his hands, and then slowly said what he wanted. One second, two seconds, nothing happened, and Yun Xuan's heart finally let go.

It seems that this exchange ability is not something that can be exchanged, and the whole thing is so tall that the harmful Lao Tzu was struck by lightning. Yun Xuan looked at the Xuantian system with some resentment, if he wasn't afraid of being struck by lightning again, Yun Xuan would definitely let out a bad breath.

Suddenly, a ball of light appeared in the sky, and then fell on Yun Xuan's hand, and as the halo disappeared, a book appeared in Yun Xuan's eyes.

"Shusha Salt Making Method" Yun Xuan looked at the five words written on the cover, and then opened it. The figure drawings and utensils that were originally fixed on the paper suddenly came to life, floating in mid-air, and then turned into small glowing particles that flew directly into Yun Xuanmei's heart.

Yun Xuan seemed to see the most primitive time, when people wore clothes made of animal skins and lived a life of wool and blood. At that time, people found a special piece of soil, which was often surrounded by animals, so it became the best place to hunt animals.

Later, a man named Susha wanted to crack this unsolved secret, and secretly dug up a piece of soil and returned to the tribe while the beast was away. He learned how to lick and eat the animals, but was surprised by the unique taste of the soil, and then began to make soup with the soil, and he found that the food tasted good.

The vicissitudes of life, the four seasons change, with the passage of time, the former primitive man has evolved, and the days of Ru Mao drinking blood are gone. Salt has been preserved, and with the efforts of generation after generation, everyone finally knows that there is something that can make people more energetic and food more delicious.

As a result, salt has officially appeared in the public's sight, and everyone has learned to find salt, dig salt, make salt, and form a complete system. Suddenly a neon sign appeared in Yun Xuan's sight, Yun Xuan was taken aback, there is electricity, this is modern society.

After a while, everything in Yun Xuan's mind disappeared, and the book in his hand disappeared, and Yun Xuan guessed in his heart. Nine times out of ten, this Xuantian system is a ghost, but I didn't expect that the thing that put books in my mind in my previous life was actually successfully realized here.

Yun Xuan breathed a long sigh of relief, all this that happened in front of him gave Yun Xuan a great shock, and Yun Xuan's mood could not be calmed down for a long time.

The light that shone gently down through the layers of trees that were swaying in the breeze formed a mottled light and shadow, like broken gold and silver, shining and eye-catching.

At this moment, Yun Xuan was lying on a rocking chair in the shade of a tree enjoying himself, and not far away, he saw Ah Huan busy there. From time to time, I ran to the kitchen, and then took out a bunch of things to the courtyard, pots and pans were indispensable, and half-human high stools were laboriously moved to the courtyard.

After only a while, beads of sweat appeared on Ah Huan's head, and Yun Xuan was like a criminal capitalist exploiting a poor girl.

"Your Highness, everything is ready" After everything was ready, Ah Huan called Yun Xuan, who was pretending to sleep.

"Okay" Yun Xuan got up, and kept recalling the method of making fine salt in his mind, first dissolving it, then filtering it, and finally heating it.

Yun Xuan sighed, you still have to study to be a person, and it is too difficult to have a good life without knowledge. Take this coarse salt to fine salt as an example, when Yun Xuan found a way to make it, he found that it was so simple, but before he knew it, he didn't know if he wanted to break his scalp.

There is a golden house in the book, which is true.

"Your Highness, what do you want all this salt for" Ah Huan was very curious, not knowing what Bai Yunxuan was doing.

"Wait a minute, keep it a secret now" Yun Xuan put all the salt into the basin with water, and then took the chopsticks and kept stirring quickly. According to the memory in his mind, to dissolve these salts until they cannot be dissolved, the remaining liquid is what Yun Xuan needs.

Five or six minutes passed, and the original yellow-brown salt had turned into brine, and some small particles were left in the basin. Yun Xuan collected these small particles and threw them aside, and then filtered the turbid salt water with gauze to intercept some impurities.

Since there was no filter paper with good water permeability in this era, the waiting time was a bit long, and more than ten minutes passed, and the turbid liquid was finally filtered. But the result was not what Yun Xuan wanted, because the color of the filtered liquid at this time was not pure, and there were some impurities. In desperation, Yun Xuan had no choice but to do it again, and finally got a liquid with a relatively pure color in the anxious waiting.

"Ah Huan, is it hot?" Yun Xuan said.

"Alright, Your Highness"

Then Yun Xuan poured all the liquid into the pot and burned it over a high fire, waiting for the heat to evaporate the water, and all that was left was the fine salt that Yun Xuan needed.

Since this is the first time Yun Xuan has made fine salt, although he has the help of textbooks, there is a gap between making it himself and making it by others. Yun Xuan didn't dare to be careless, this was to ask Ah Huan to bring all the salt from the kitchen, if this was invalidated, tonight's meal would not be fragrant.

It was almost over, Yun Xuan saw through the gap in the lid of the pot and saw that there were white crystals in the pot, so he extinguished the flame and used the residual heat to continue to bake the salt water.

"Ah Huan, come over and beat the legs of the little master" After being busy for so long, Yun Xuan was a little tired, lying on the rocking chair, and leaving the rest to time.

"Okay" Ah Huan happily ran to Yun Xuan, squatted down and gently hammered Yun Xuan's legs, compared to those things that he couldn't understand.

Ah Huan prefers to hammer Yun Xuan's legs and rub his shoulders, and in winter, Ah Huan doesn't know what to think of, and suddenly becomes shy. Then he secretly looked at Yun Xuan and found that Yun Xuan had his eyes closed, so he stuck out his tongue and smiled playfully.

"Ah Huan, how about I ask the Internal Affairs Office to recruit a few more maids for me, so that you don't have to work so hard" Yun Xuan closed his eyes and enjoyed.

"Ah, Your Highness, this, we don't have any money for this" Hearing that Yun Xuan wanted to ask for a few more maids, Ah Huan stammered a little, don't look at Yun Xuan is a little majestic now, and his living conditions have improved, but there is still not much silver in his hand.

"I know" Yun Xuan then remembered that he had just taught the Inner Palace Supervisor a lesson, but the Internal Affairs Office itself had not yet been there, and they didn't know how powerful they were. Yun Xuan's face was gloomy when he thought that the silver he had been taken away for more than ten years had been taken away, and it was time to get it back.

"Okay, it's okay" Calculate the time, the fine salt should be cooked, Yun Xuan quietly opened the lid of the pot and peeked at it, how did he get results after being busy for so long.

"Come, the next time is to witness the miracle" Yun Xuan motioned for Ah Huan to stand over, and then opened the lid of the pot, only to see that there were a lot of white crystals in the pot.

"Ah, this is fine salt" When the lid of the pot was opened, white crystals appeared in Ah Huan's eyes, and Ah Huan shouted in surprise. Salt, this is fine salt, Ah Huan's eyes widened, his eyes were dumbfounded, this is the fine salt that only the emperor and the concubine are qualified to use.

Ah Huan has also seen the salt used in Yun Qing Niangniang's kitchen, and there is no way to compare with this. Ah Huan rubbed his eyes, he couldn't believe that this was true, His Highness would actually make fine salt.

Yun Xuan looked at Ah Huan's stupid appearance, a little funny, and directly collapsed a melon, and said with a smile, "Try it."

Yun Xuan picked up a handful with his hand, put it in the palm of his hand and looked at it carefully, Yun Xuan was a little disappointed, this was not comparable to the salt he ate in his previous life. Although white is predominant, a closer look reveals that each grain of salt has some visible yellow on it.

This shows that there are still some impurities that have not been removed when Yun Xuan is filtered, resulting in these yellow things appearing in this last step.

"It's so salty" Ah Huan tasted it, but spit it out with a wrinkled face, is this a handful of it into his mouth?

"This is fine salt, very salty, you put these fine salts, and then make a small bowl, and take some time to give to the queen mother" Yun Xuan tasted it, the taste was okay, much better than the salt used before, at least there were not so many impurities, and it was more safe to eat.