Three days later.
Hu Hai woke up early and obediently folded the quilt into a small square piece with edges and corners. Then put out the mosquito repellent coil next to the bed, this is a good thing!
He admires Cao Xiu even more now.
As for Zhao Gao?
Sorry, he is so unfamiliar.
Cao Xiu is really excellent and has all kinds of fun things. He was talking about this mosquito repellent incense. Because he said mosquito bites made him itchy at night and couldn't sleep, Cao Xiu took him to rub the mosquito repellent incense with mugwort and plant ash. Once you click on it, you no longer have to worry about mosquitoes.
Not only that, there are also all kinds of delicious food in the house. In addition to three meals, there are also various snacks. Like candied haws and dried meat...these are quite delicious.
Therefore, he now obeys Cao Xiu's advice.
Let him go east, but he will never dare to go west.
Ask him to stand and he will never sit down.
After walking out of the guest room, Hu Hai started to wash up. Then he couldn't wait to come to the well, and he couldn't wait to pull the clay pot up.
"hiss……"
Hu Hai was delighted by the slightest hint of coolness. He quickly took out the silk cloth used for bees and looked at the ice-water mixture inside with surprise on his face. In the extremely hot weather, Cao Xiu actually made ice cubes from boiling water!
This...this is unreasonable!
It must be the appearance of God Huangtian!
"Xiu'er, Xiu'er, come on!"
"There's really ice in your can!"
Cao Xiu yawned and walked out slowly.
He glanced at the clay pot and nodded calmly.
In fact, boiling water to make ice failed again this time. In order to fool this little kid, Zhou Bo secretly came over half an hour later and stuffed all the ice cubes in.
"How on earth did you do it?" Hu Hai took out the ice cube and put it in his mouth, feeling the slightest coolness with surprise on his face, "It is obviously boiling hot water, but it can condense into ice when it sinks in the well. Is this a magic trick? ?”
No, this is a cover-up.
Cao Xiu only felt funny in her heart.
However, he turned his back seriously.
"is it fun?"
"Fun!"
Hu Hai nodded repeatedly.
"I'll teach you something more interesting."
"Cao'er, bring everything here."
"clear."
Seeing that Cao Xiu wanted to act like a monster again, Qin Shihuang and Fusu also walked out of the room. The emperor was fine, but Fusu looked extremely tired with dark circles under his eyes.
"Xiao Su, why are you so weak?"
"Hehe...hehe..."
Fusu is smiling but not smiling.
Are you allowed to stay up at night to review memorials?
"Xiu'er, what are you doing again?"
"practice!"
"???"
Cao Xiu raised his hand pretending to be mysterious, and there was a handful of white lime in his hand, which smelled pungent. "Do you know what this is?"
"Destroying stone." Qin Shihuang glanced at it and said indifferently: "It is also called ground frost. It is easy to see in places such as pig pens and stables. There are also some salt marshes where you can see it. It can be used as medicine to clear away filth and turbidity. It can diuretic, purge excess, detoxify and reduce swelling. Some alchemists also use this to refine elixirs, but the effect is very little."
"How do you know it?"
"Ahem, I heard something!"
Qin Shihuang calmly explained that he knew simply because he had seen a lot. For example, he needs to know all the medicinal materials used by the alchemists in the palace to make elixirs, including Xiaoshi.
"Cao Jun also wants to refine the elixir of death?"
Fusu looked puzzled. He had repeatedly warned him before, saying that the so-called elixirs were all fake. Han Feizi also mentioned and criticized it many times. For example, someone once wanted to teach the King of Yan the art of immortality, and the King of Yan sent people to learn from him. The person who was sent to learn died before he could learn...
But now, he can't squirt. The emperor is facing rejuvenation, maybe there really is an elixir? If it was refined, he would get two of them.
"Go, go, go, I can't practice it."
Cao Xiu waved his hand in disgust. Like the land of Yanqi, there are many alchemists. They bewitched the king, saying that there were fairy mountains and elixir overseas. Others refine elixirs and brag about themselves. Anyway, he has never heard of anyone who can really live forever.
"What's that going to do?"
"Ice making." Cao Xiu turned to look at Hu Hai and continued: "When lime enters the water, it will increase the water temperature. When the limestone enters the water, it will lower the water temperature. If the amount is enough, ice can be made."
"oh?!"
Qin Shihuang immediately became interested when he heard this.
He naturally knows this. Lime is not a black technology and has been used for a long time. He remembered that a guard's eyes were accidentally stained with lime before. Fortunately, the imperial doctor was there and asked him to wash it away with oil, and then everything was fine. When the alchemist was refining alchemy, he also discovered that dissolving stone into water would cause the water to cool down, but he never cared about it.
Cao Xiu slowly put all the saltpeter into the water.
In fact, he has never made any profit using this method of making ice in these years. Because the quantity of saltpeter is small these days, it is used for medicine, so the price is naturally high. If you use it to make ice and sell it for money, you will probably lose all your pants. For those who can afford it, there is no need to have an ice cellar at home. People who can't afford it will naturally not buy it.
He did this purely to show off. As the stone entered the water, he quickly began to react, and he could even see a little white mist rising. He has long known the ratio of ice making, which is almost 1:1. How much water is used depends on the amount of sludge, so the cost is extremely high!
After a while, the water in the basin stopped. At the same time, you can also see a lot of broken ice appearing, just like a mixture of ice and water.
Yes, not even ice cubes.
Even so, it was enough to shock Qin Shihuang and others. Especially Hu Hai, who was holding the copper basin, was full of surprise and even wanted to pick it up and take a few sips.
At the critical moment, Cao Xiu raised his hand to stop him, and said helplessly: "You can't drink this thing randomly, it's mainly for you to see."
"Sir, this is so interesting!"
Hu Hai even changed his name.
He admired Cao Xiu even more now, looking at the copper basin with piercing eyes, "I didn't expect that using this melting stone, you can actually make the legendary summer ice. I can't boil water to make ice, but this melting stone can make ice." It’s much simpler.”
Isn’t this just a matter of having hands?
"Children can be taught."
Cao Xiu smiled and nodded.
He was about to go out for inspection when he saw Zhou Bo running in in a panic, covered in sweat and panic, even Cao Xiu was startled.
Zhou Bo had been with him for so many years and was very cautious and careful in his work. Cao Xiu also promoted him to the new pavilion chief of Surabaya this time. Zhou Bo works very hard every day to implement Cao Xiu's governance philosophy.
He never does this normally.
"Young...Young Master! Something is wrong!!!"
"how?"
"A group of fierce soldiers are coming, not far from us. Seeing that they are flying the Qin Kingdom's Black Bird Flag, their target direction is us."
"???"
Cao Xiu's eyes suddenly widened.
Holy shit?
Could it be that his identity as a rebel was revealed?
"Don't be dumbfounded, hurry up!"
"Forehead?"
"Just run away and escape for your life!"
Cao Xiu headed towards the study without looking back, preparing to escape directly from the tunnel. He estimated that Zhao Xie or someone else must have been captured and betrayed. If you don't get out of the way, you're going to die!
Rumble…
The sound of horse hooves came quickly from a distance.
Cao'er also came over in a panic at this time, "Young Master, our house has been surrounded by people. They all look unfamiliar, they must not be from Peixian County, they are all murderous sharp cavalry!"
"Why are you still standing there? Run away!"
