With another spoonful, the First Emperor closed his mouth, felt the subtle sensation of the smoothie slowly melting in his mouth, and leaned back slightly.

There's nothing quite like a chilly smoothie on a hot day.

The stomach, which had been lacking appetite for a long time, seemed to gradually begin to squirm under the stimulation of the cold.

The First Emperor took a bite, as if this turtle jelly was a unique taste in the world.

"Tell me, where did you get the ice?" The First Emperor asked while eating turtle jelly, leaning on the desk.

"Made!" Zhao Si smiled.

"Ice? Made? "For the ancients, the first reaction was absurdity.

How can people make ice out of thin air in this hot and dizzying weather?

But if it's Zhao Si, it's not impossible, Zhao Si always has some strange skills.

Obviously, the First Emperor was waiting for Zhao Si's explanation.

"The ice is made of saltpeter, Your Majesty can take a look at it later." Zhao Si smiled.

The First Emperor nodded and continued to taste the turtle jelly in the bowl.

A bowl of turtle jelly was put into the stomach, and there were ice cubes next to it to cool down, and the stuffiness was gone, and the first emperor couldn't help but have a great appetite.

In the past few days, because of the weather, the first emperor has eaten relatively little.

Seeing this, Zhao Si went to work in person, and while the convoy was still burying the pot to make rice, he fried a few side dishes for the first emperor, made a soup, and cooked a bowl of white rice.

The First Emperor ate more comfortably this time, and Zhao Si hadn't eaten yet, so he just followed the First Emperor to eat in the same case.

There was no waste of food, a few side dishes, all of them were eaten, and the first emperor enjoyed the comfort of the cold air, and felt very comfortable in his heart.

"Tsk! In the future, this turtle jelly will have another history...... When the first emperor inspected the world, the weather was hot, and Zhao Shilang made sand turtle paste ......"

After being full of wine and food, the first emperor rested for a long time, and then reluctantly gave up the coolness of the ice and followed Zhao Si to watch saltpeter ice making.

Fortunately, it was completely dark now, and although the air was still hot, it was not as unbearable as the day.

"Your Majesty, please look at ......"

Zhao Si rolled up his sleeves and started his performance.

"When this nitrate dissolves in water, it absorbs heat."

……

Zhao Si was busy working at the same time, there was nothing complicated, this thing would be at a glance.

"Where does this nitrate come from?" The First Emperor was curious.

This soil nitrate, the first emperor really has never seen it, at least the first emperor's thatched toilet will not grow soil nitrate.

As for the natural nitrate ore, the gold pill eaten by the first emperor may contain it, but the relationship between the nitrate ore and the appearance of the soil nitrate is not very large.

"Hmm...... This soil is mostly born in thatched houses......" Zhao Si scratched his head.

The first emperor has an old face.

In other words, the nitrate used to make ice was made from the thatched house? Isn't it ice cubes to eat yourself?

The First Emperor had some bad associations.

"Your Majesty, this is scraped down from the wall, and you see, the water used to make this ice is completely separated from the earth nitrate."

The First Emperor watched as the ice crystals gradually condensed in the barrel, and a little deep thought appeared between his eyebrows.

"And this nitrate can not only make ice. Your Majesty, look. ”

Zhao Si rubbed out a handful of earth nitrate and lit it.

This thing is very interesting, maybe because of the purity, it doesn't burn like a deflagration, but burns slowly, but anyone who has played with earth nitrate knows that this thing is not easy to extinguish, and it will bubble when it burns.

"Can you burn it?" The first thought of the First Emperor was to be able to use it as firewood.

In ancient times, fuel was really not very cheap.

"It's not used as firewood, the minister scavenged Sanxiang, and collected more than 100 catties, where can I ...... it when I use it as firewood" Zhao Si smiled bitterly.

"It's the minister who wants to study and study privately, Your Majesty will drive the world, and all over the way, you can collect soil and nitrate to make ice, and the rest is ......."

The technology tree of gunpowder must be the point, and Zhao Si still hasn't forgotten the mantra of one sulfur, two nitrates and three charcoal.

The specific ratio is definitely not the case, and this one-two-three Zhao Si also vaguely remembers that it is not one-to-two-to-three.

But that's all the raw materials, it's a big deal to artificially match trial and error, try one by one, one by one, Daqin has time and manpower and room for trial and error.

Even Zhao Si's own financial resources are enough to support the research of black powder.

And the bronze craftsmanship of Daqin, the conditions for casting cannons can also be satisfied.

These don't take long, there is a general direction, it will only take ten or eight years to break the sky, and the most time-consuming thing is the production line and mass production.

From the invention to the establishment of the production line and the installation of the whole army is the most time-consuming thing.

In fact, the development of technology has never been gradual.

Technology and basic industry are completely different things, and the two cannot be generalized.

"Accurate!" The First Emperor didn't think much of it.

If Zhao Si wants it, then he wants it.

At the very least, for now, the soil nitrate collected from the latrine is not a precious thing, the quantity is small, and it is not so useful, and can only be used to make ice.

Instead, it was handed over to Zhao Si, maybe Zhao Si, this kid, would be able to come up with some unexpected surprises.

Hasn't this kid Zhao Si always been like this?

Zhao Si was overjoyed and bowed down to thank him.

……

Later, while the First Emperor was inspecting the world, he also began to send soldiers to nearby places to collect soil and nitrate for ice.

No way, the weather, no ice cubes are too slow.

The First Emperor needed ice, and if he wanted to keep his speed under the scorching sun, he needed ice to relieve the heat.

In this way, the skill of making ice from soil nitrate was mastered by Daqin, but the current earth nitrate has to try its best to meet the needs of the team, and there is no balance for the time being.

Expect how much can be scraped out of the toilet scraper, but fortunately, the nitrate in the toilet can be harvested sustainably.

……

The speed of the drive was restored, and the problem of the first emperor's loss of appetite was solved.

Zhao Si had ice cubes, and he also got some iced food for the First Emperor when he had nothing to do.

Roasted fairy grass, fruit fishing, and iced milk tea......

Of course, Emperor Shi didn't eat a lot every day, after all, he was still in the fitness stage, and most of it actually went into Zhao Si's stomach.

The driver staggered, walked out of the boundary of Dongjun, and arrived in Yangcheng.

Yangcheng is still the old land of Wei, and further back, during the Xia Dynasty, Yangcheng was once the capital of the Xia Dynasty.

And here...... It is also Chen Sheng's hometown.

Yangcheng was developed relatively early, and it is a transportation hub in the surrounding area, connecting the entire Central Plains region.

Therefore, there is also the residence of the First Emperor.

Because the birthday of the first emperor is approaching, he stopped at the Yangcheng Palace.

Tomorrow is the birthday of the First Emperor, and according to the custom, the First Emperor will feast his ministers and worship Peng Zu to have a happy celebration.

As for the accompanying civil and military officials, they also followed the first emperor near the palace.

Zhao Si is more special, he and Wang Li are in charge of the palace ban, and the two of them have made up a second general.

Because of the special geographical location of Yangcheng and its historical significance, the first emperor's driving would stay here for a few days, inspect the army, check government affairs, and patrol the place.

It just so happened that his birthday was also spent in Yangcheng.

"Yangcheng, this is too big......"

In the house, Zhao Si looked at the map in front of him and fell into deep thought.

Yangcheng is a county with a total population of tens of thousands......

As for the encompassing territory, it is also very vast, and if you want to find someone here, even if you know your life, it is tantamount to looking for a needle in a haystack.

Fortunately, Daqin has a complete household registration system.

Chen Sheng has served, which means that his test must have been officially registered in Daqin.

The First Emperor's drive always has to stay here for a while, and the population data of thousands of households can be read in a few days after spending some time with dim sum.

However, in the absence of special circumstances or non-special persons, they are not eligible to consult the local household registration information.

Under the rule of the First Emperor, the government was still very strict about the protection of data, especially this kind of statistical data related to local ecology.

"Your Majesty, the minister wants to read the government affairs of Yangcheng with Li Xiang."

Li Si was responsible for taking his subordinates to check the government affairs of Yangcheng.

Fields, population, tax payments, military service, Xing prison...... These are all items that Li Si wants to take someone to check.

"Accurate!"

The First Emperor unsurprisingly agreed.

There is no reason to disagree.

Anyway, Zhao Si is a Lang official, except for the proximity of the king, Lang Guan has always been where to use.

As long as there is a formal appointment, Lang Guan can even wear multiple hats.

Zhao Si took the initiative to find a job to do, it was rare or a serious thing to do, how could the first emperor not agree?

Of course, the most important thing is that Zhao Si lacks practical experience, and the first emperor is happy to see Zhao Si supplement his shortcomings.

Even if Zhao Si didn't mention it, the First Emperor would probably let Li Si take Zhao Si to level up.

Nothing is easier than going down to the local level to review government affairs.

Zhao Si's whimsical mind can always give the First Emperor all kinds of surprises, but now Zhao Si is only in his early twenties, what about the future? Do you have to use his unbridled brain to make up for the shortcomings in government affairs?

If you want to become a three-public, you must also have a good grasp of the local ecology.

These things, if you don't experience them now, you will have to experience them in the future, it is impossible for the first emperor to let Zhao Si keep watching the door, and it is impossible for Zhao Si to live for a lifetime with his proximity.

This kid always has to go to the front of people.

To the relief of the First Emperor, Zhao Si was self-motivated, rather than indulging in the current favors......

Zhao Si bowed down and thanked him......

Understanding the real government is secondary, and his main purpose is to pull more people into the water and divide the corpses of five horses.

Of course, there is only one thing that matters most at this time.

The birthday of the First Emperor.

Tomorrow is the birthday of the First Emperor.

Although the pre-Qin period did not attach as much importance to birthday as later generations, and it was not as popular as the emperor's birthday, it was also an out-and-out big day.

After finalizing Chen Sheng's arrest plan, Zhao Si was busy checking the birthday gift he had prepared for the First Emperor.

The Qin Dynasty did not have the rules of birthday gifts for the courtiers, and the First Emperor rejected such a meaningless form.

Zhao Si didn't want to have a bad impact on Daqin because of his personal behavior.

So he won't give these gifts in public.

Purpose!

Well, Zhao Si always felt that the First Emperor should have some decent birthday gifts.

(End of chapter)