Zhang Liang looked stunned when he received the edict, and then saw the good medicine brought to him, and was silent for a long time.

Years later, Zhang Liang always remembered this scene. Perhaps from this day on, he really recognized Great Qin and me, the second emperor.

On this day, I was reading the recital in the Temple of the Four Seas, and it was too hot to stand.

It was June, the hottest time of the year, and the ice in the hall melted in less than half an hour, and the two maids next to them had barely had any effect on their fans. The bead curtain outside the hall was motionless, and the noisy cicadas were even more irritating.

"Qiwan, I can't stand it, why is it so hot!"

I threw away the pen in my hand, picked up the newspaper and fanned the wind wildly, and I wore a thin shirt on my body, and then I took it off and stripped naked.

Qi Wan was also sweating profusely, and said helplessly: "Your Majesty, this summer is hotter than before, and even the ice in the cellar has begun to melt slowly. ”

I got up and wanted to go out to have a look, but as soon as I stepped out of the temple gate, a wave of heat hit me, and I hurriedly retreated.

"If only there was an air conditioner!" I had no choice but to complain, for a person who is used to being warm in winter and cool in summer, it is terrible not to blow the air conditioner, and you can wear thicker in the cold in winter, and it is really useless to be hot in summer.

I thought about how to make ice from saltpeter for a long time, but finally gave up.

There is no need to go through a lot of trouble for myself, if it is popularized in the world, and so much saltpeter can be obtained in the Qin Dynasty, I might as well directly build a few land mines and throw them to the Xiongnu "bang bang bang", and then I can go to Siberia for summer vacation......

"Qi Xuan, go and call Li Si and Feng Zheng over."

After a while, the two of them came sweating profusely.

"See Your Majesty."

I waved my hand: "No need to be polite, sit down." ”

The two glanced at each other and said carefully: "Your Majesty is standing, and the minister does not dare to sit." ”

"Hahaha." After I reacted, I couldn't help but laugh: "I'm all hot and confused, let's all stand, it's cool to stand." ”

It's better to stand up than to sit on the couch and sweat.

"I've read some of the reports from all over the country, the east of Guanzhong goes straight to the East China Sea, and the place next to Deshui is better, and there is a drought in other places, and Dushui Cheng said that the water volume of Zhengguo Canal has dropped rapidly, and I'm afraid this summer will not be easy."

Li Si nodded: "Your Majesty, the minister has ordered all counties to organize irrigation, although there are waterwheels promoted by His Majesty to help, but the water source is scarce, and the effect is not good." If it is so hot for another month, I am afraid that the north of Deshui and Guanzhong will have no harvest. ”

Feng Zai agreed: "Yes, now the main grain producing areas of Daqin are on the first line of Guanzhong and Deshui, although the scale of rice cultivation in the south of the Yangtze River has increased greatly, but one is still much less than corn, and the other is inconvenient to transport and difficult to transport to the north. ”

I raised my head and sighed: "I have ordered Taishi to prepare for the rain, let's see if God gives face......

It is estimated that there is a high probability that it will not give face, after all, we have also experienced nine years of compulsory education...... It's just that as an emperor, you still have to get by on face.

I suddenly remembered the saltpeter thing.

"Li Xiang, I have given you one thing, and you must make sure that someone credible can do it."

Li Si hurriedly bowed his hand: "Listen quietly." ”

"Have you ever seen anything white on the wall when you went to the toilet?"

The two of them looked stunned, and came back to their senses for a while: "Back to Your Majesty, I've seen ......"

I nodded, smiled, and said, "That's good." Listen carefully to what follows. ”

"You go and prepare five acres of land outside Xianyang City, remove stones and other debris, then dig some cellars and pits, and then bury wheat straw, fallen leaves, rotten cloth and other items into the fields, and then put lime and water into the dug cellars and pits to raise the temperature of the land and keep the temperature stable for a period of time."

"Then, water the urine of people and animals in the fields, and wait for about 10 months, a large amount of white powdery things will appear in these fields, then dig out the soil containing white powder, mix it with plant ash according to one-third of the weight of the soil, soak it in water, brew, and boil the filtered water in a pot, you can get a white particle, and I want this white particle."

Li Si and the others were dumbfounded, Feng Zai resisted the urge to reach out and touch me if I was hot and confused, and wondered: "Your Majesty, why do you want to do this...... Such filth? ”

Indecent! It's so indecent!

The emperor and the third duke talk about how to play with pee? Wouldn't this make the world laugh off their big teeth......

I didn't realize it, and an evil smile appeared on my face: "Filth? That's where it goes. The excavated soil should be tasted by someone, and the spicy one is the best, followed by the bitter one, and then the sweet and sour one. The method I taught you works with spicy, and if it is not spicy, you need to change the proportion of plant ash, and leave this to you to experiment with. ”

Li Si seemed to have smelled the smell, and he had the expression of an old man looking at his mobile phone: "Your Majesty, this is ...... This ......"

I didn't know what to say for a long time.

The two of them had the same thought in their hearts: how could His Majesty be so familiar with the taste of this soil, could it be ......

I knew what they were thinking by looking at their expressions, and I was going to pretend to be a force, but I didn't expect them to misunderstand that I had tasted it...... Annoyed, he said angrily, "What are you two thinking! I'm listening to others! ”

The two hurriedly bowed down and said, "Your Majesty, the minister doesn't dare!" ”

It's a good one not to admit yourself......

I gave them both a blank look, and then said, "I have to warn you that the white pellets that are made are called saltpeter, and those alchemists may have seen them. This thing doesn't need to stick to the fire, when the temperature is high, the impact force is strong, it will be mixed with copper, iron and gold, and it will be when it encounters acid. If you smell it, you will be poisoned if you suck it, and if you touch it, you will be injured, and if you eat it, you will die. ”

The two of them had gone from frowning to looking frightened.

What kind of thing is this, it's comparable to a broken intestine grass! You have to eat the broken intestine grass to be poisoned, good guy, you can't smell it! Not only can't you hear it, but you have to serve it like your ancestors, and if you are not happy! Can you stand this?

In fact, I am not simply scaring them, although potassium nitrate itself is colorless and odorless, and does not volatilize toxic gases, but once the dust is inhaled, it will also cause great harm to the human body.

"So it's better to send people who have committed serious crimes to do this, and use leather or something to protect them, and stay away from them. In addition, the saltpeter produced should be kept dry and not in contact with water. ”

Li Si said cautiously: "Your Majesty, since this thing called saltpeter is so dangerous, why do you want to make it?" ”

I waved my hand: "You'll know when you need it." In addition, the matter must be kept strictly confidential and no one other than the people involved will be allowed to know about it. ”

The two walked away in a daze.

I ran to the gazebo near the balcony and lay down, but I didn't have the strength to move......