Three days later.

Hu Hai woke up early, and obediently folded the quilt into boxy pieces, with edges and corners. Then snuff out the mosquito repellent coil next to the bed, this is a good thing!

He admires Cao Xiu more and more now.

As for Zhao Gao?

I'm sorry, he's so unfamiliar.

Cao Xiu is really excellent and has all kinds of fun. Just said that this mosquito repellent coil, just because he said that he couldn't sleep at night because of mosquito bites, Cao Xiu took him to rub the mosquito repellent coil with wormwood and grass ash. Once you have lit it, you don't have to worry about mosquitoes anymore.

Not only that, but there are also all kinds of delicious food in the house. In addition to three meals, there are also various snacks. Like sugar gourd, preserved meat...... These are quite tasty.

Therefore, he is now obedient to Cao Xiu.

Let him go east, he will never dare to go west.

Let him stand up, and he will never sit still.

Walking out of the guest room, Hu Hai began to wash first. Then he couldn't wait to come to the well, and couldn't wait to pull the clay pot up.

"Hiss......"

The slightest coolness that came made Hu Hai overjoyed. He hurriedly took out the silk silk used for bees, and looked at the mixture of ice and water in it, his face full of surprise. In the hot weather, Cao Xiu actually made ice cubes out of boiling water!

This...... That doesn't make sense!

It must be the Emperor God who has appeared!

"Xiu'er, Xiu'er, come on!"

"You're really freezing in this jar!"

Cao Xiu yawned and walked out slowly.

He glanced at the clay pot and nodded calmly.

In fact, this time the boiling water failed to make ice again, in order to fool this little kid, Zhou Bo secretly came to a tanuki for the prince for half an hour, and stuffed all the ice cubes into it.

"How exactly did you do that?" Hu Hai took out the ice cube and put it in his mouth, feeling the slightest coolness and his face was full of surprise, "It's obviously hot water, but it can condense into ice when it sinks in the well, isn't this the fairy law?" ”

No, it's a trick.

Cao Xiu only felt funny in her heart.

However, he still turned his back seriously.

"Isn't it fun?"

"It's fun!"

Hu Hai nodded repeatedly.

"I'll teach you something more interesting."

"Cao'er, bring everything up."

"Understood."

Seeing that Cao Xiu was about to be a demon again, he even took Qin Shihuang and Fusu out of the door. The emperor was fine, but Fusu had dark circles under his eyes and looked extremely tired.

"Xiao Su, why are you so empty?"

"Huh...... Hehe......"

Fusu is smiling and not smiling.

Let you not sleep at night to try the pirate?

"Xiu'er, what are you going to do here?"

"Practice!"

“？？？”

Cao Xiu pretended to raise his hand mysteriously, and there was a handful of white lime in his hand, which smelled pungent. "Any idea what this is?"

"Stone." Qin Shi Huang looked at it and said indifferently: "It is also called ground frost, and it is easy to see in places such as pigsty and stables. There are also some salt marshes, which can be seen. The medicine can dispel filth and purify turbidity, dilute water and laxative, detoxify and reduce swelling. There are also some alchemists who use it to refine immortal elixirs, but the medicine has little effect. ”

"How do you know?"

"Ahem, I've heard of it!"

Qin Shi Huang calmly explained that he had simply seen a lot, so he knew. Like the medicinal materials used by the alchemy of the Fang priest in the palace, he needs to know everything, and naturally it also includes the elimination stone.

"Cao Jun also wants to refine the elixir of immortality?"

Fusu's face was full of puzzlement, and he had repeatedly admonished him before, saying that the so-called immortal medicine was fake. For example, Han Feizi also mentioned and criticized it many times, for example, someone once wanted to pass on the art of immortality of King Yan, and King Yan sent someone to learn from him. Before the person sent to study could learn, he died......

But now, he can't squirt. The emperor's rejuvenation is in front of him, maybe there is really an immortal elixir? If he did, he would have more than two.

"Go, go, I can't refine it."

Cao Xiu waved his hand in disgust. Like the land of Yanqi, there are many monks. They bewitched the king, saying that there were immortal mountains and immortal elixirs overseas. There are also refining pills and boasting about themselves, anyway, he didn't hear that anyone can really live forever.

"What's that going to do?"

"Ice-making." Cao Xiu turned his head to look at Hu Hai and continued: "When lime enters the water, it will increase the temperature of the water. When the stone is fed into the water, the temperature of the water will be lowered, and if the amount is sufficient, ice can be made. ”

"Oh?!"

When Qin Shi Huang heard this, he immediately became interested.

He naturally knew about this, lime is not a black technology, and he has been using it for a long time. He remembered that there had been a guard whose eyes had been accidentally stained with lime, but fortunately the Imperial Doctor was present and asked him to wash them off with oil before he was fine. When alchemy, Fang Shi also discovered that the water would cool down when the stone was put into the water, but he never cared.

Cao Xiu slowly put all the saltpeter into the water.

In fact, he has not used this method to make ice profits in these years. Because the amount of saltpeter is small in these years, it is used for medicine, and the price is naturally expensive. It is used to make ice and sell it for money, and it is estimated that the pants that can be lost are gone. Those who can afford to buy it don't need to have their own ice cellar at all. Those who can't afford it, naturally won't buy it.

He was just doing this for show, and 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, and how much water has to be used, so the cost is extremely high!

After a few moments, the water in the basin stopped. At the same time, you can also see a lot of broken ice appearing, as if it is a mixture of ice and water.

Yes, not even ice.

Even so, it was enough to shock Qin Shi Huang and the others. Especially Hu Hai was holding the copper basin, his face was full of surprise, and he even wanted to take two sips of it.

At the critical moment, Cao Xiu raised his hand to stop it, and said helplessly: "You can't drink this thing indiscriminately, 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, and looked at the copper basin with bright eyes, "I didn't expect that with this elimination stone, I would be able to do the legendary Xia Bing." I can't make ice with boiling water, but it's much simpler. ”

Isn't it just a matter of having hands?

"The children can be taught."

Cao Xiu smiled and nodded.

He was about to go out to inspect, when he saw Zhou Bo running in in embarrassment, looking sweaty and flustered, Rao is Cao Xiu was shocked.

Zhou Bo has followed him for so many years, and he is quite cautious and careful, and this time Cao Xiu also promoted him to be the new Surabaya Pavilion Chief. Zhou Bo is also quite conscientious every day to implement Cao Xiu's governance philosophy.

He would never be like that.

"Less...... Shaojun! Something is wrong!! ”

"How?"

"There are a lot of fierce soldiers, and it's not far from us. Seeing that they are hanging the Xuanniao flag of the Qin State, the target direction is ours. ”

“？？？”

Cao Xiu's eyes suddenly widened.

No way?

Could it be that his identity as a thief was revealed?

"Don't be stupid, hurry up!"

"Huh?"

"It's just running away, running for your life!"

Cao Xiu didn't look back and drilled towards the study, ready to flash people directly from the tunnel. He estimated that it must have been Zhao Xie or someone else who was captured, and then betrayed him. If you don't run away again, you will die!

Thundered......

The sound of horses' hooves came quickly from a distance.

Cao'er also came in a panic at this time, "Shaojun, our mansion has been surrounded by people. It looks like they are all fresh, they shouldn't be from Peixian, they are all murderous sharp horses! ”

"What are you doing in a daze? Runaway! ”