At the entrance of Dongshi City, Hu Hai and others watched the audience gather more and more, and couldn't help but feel good and ready to perform.

Hu Hai took the lead in standing up, but he didn't speak for a long time, he wasn't nervous when there was no one, and now he was a little overwhelmed when he looked at so many people.

Bai Pu next to him saw that Hu Hai's face was red and his hands were shaking, and he didn't speak for a long time, but he also knew that he was a little scared, so he hurriedly encouraged in a voice that only the two of them could hear:

"Don't be afraid, Gongzi Hu Hai, the market is full of Daqin's people, they are all honest people, you just need to make it clear. Everyone has a first time, and my first day as mayor was far worse than you. ”

In fact, Bai Pu is modest, his family is a generation of wealthy businessmen, and the descendants of Bai Gui, the richest man in the Warring States.

But Hu Hai didn't know this, he just felt that when a talent like Bai Shang had such a time, what else did he have to worry about?

Immediately, Hu Hai breathed a sigh of relief, and finally spoke: "Elders, the kid is the main speaker of the Xue Gong propaganda team, Hu Hai, first of all, thank you for coming." ”

Saying that, Hu Hai respectfully saluted the onlookers, and the three Tianqiu people behind him also hurriedly followed suit.

The market is full of small citizens, who have received this kind of treatment, and they are at a loss for a while, and there are any ways to return the courtesy, such as making a fist, holding a fist, bowing, and waving a hand.

Hu Hai didn't pay attention to it, but felt that such an audience was a little cute, and couldn't help but smile slightly, and then realized that he still had a task to do.

Hu Hai hurriedly cleared his throat and said: "The propaganda team of the Academy Palace is ordered by the Great Qin Emperor, one is for the students to integrate and the other is for the people to understand the new learning.

What we are talking about today is the way of nature, but the mystery of the avenue is difficult to describe, so we will adopt the so-called experimental method and talk about it as we do.

First of all, I asked my assistant Tian Qiu to set up a copper tripod, light firewood, and ask Zigao to collect snow and ice and put it in the copper tripod. ”

This is all a process prepared by the four of them, so as soon as Hu Hai finished speaking, the two began to hurry to work, and soon a small copper tripod filled with snow was placed in front of everyone.

Then Tian Qiu began to light the fire, I don't know if his skills are good or related to this work, he actually succeeded once, the flame was straight and vigorous, and soon Tongding reacted.

The crowd at the market watched the four children busy cooking the snow and couldn't understand what they were going to do.

But when I heard that it was a child from the school palace, I was still curious, and many people were watching with the mentality of watching a trick.

As a result, the audience has doubled, and now there are hundreds of people, all staring at the copper tripod and waiting!

Even Bai Pu didn't understand what they were going to do, but it was his job to solicit "customers", and then he said to Hu Hai's little height: "Son, say something more!" ”

Hu Hai reacted at this time, he hadn't spoken for a while, just let the family see the boiled snow, and immediately said: "I think you have all seen the snow and boiled water......

Hu Hai felt stupid as soon as he said this, could he have never boiled water when he was such an adult? How can anyone talk like that......

But since they all spoke, Hu Hai didn't plan to retreat, and continued stubbornly: "Everyone knows that ice and snow melt is water, and water, and water is ice and snow when it is frozen. ”

Speaking of this, Hu Hai paused and secretly observed everyone's reactions, but everyone in the market did not show impatience with his "nonsense", and even a few were still nodding their heads.

This reaction somewhat inspired Hu Hai, he glanced at the small copper tripod again, and saw that the small copper tripod had begun to steam, and it was estimated that it would soon boil, so he spoke again:

"If you look at this tripod again, the water will bubble up when it is hot, and then the water in the tripod will decrease, so these gases are water like ice and snow."

This phenomenon was naturally observed by the working people in ancient China very early, and more people unconsciously nodded in agreement.

"Now ask my assistant Zhao Zhao to pull out his sword and lay it across the copper tripod." Hu Hai raised his hand and said.

Zhao Zhao immediately pulled out his iron sword and raised it to the copper tripod, with hot steam below and cold metal on top, and the water vapor naturally quickly condensed into small water droplets and attached to the iron sword.

Originally, Hu Hai was going to hand it to the audience, but now that there are so many people, he didn't let Zhao Zhao show everyone one by one, and said directly: "Zhao Zhao, shake the sword!" ”

When Zhao Zhao heard this, he comprehended, and threw a sword flower with his sword, and the water droplets splashed out like raindrops.

"Good!" Everyone praised Zhao Zhao's swordsmanship, and they also thought it was quite spectacular, but they still didn't understand what Hu Hai meant, and even Bai Pu didn't understand it, so they could only applaud in confusion.

Hu Hai pulled Zhao Zhao to salute in response to everyone's praise, and then continued: "Water is cold for ice and snow, heat for steam, and steam is cold to reset water."

So where does the water come from? Some might say in a well, in a river, or even in the sea. But everyone knows that there is also rootless water in the sky, and that is rain.

Rain is water that falls from the sky, and when you look at the steam generated by the heat, isn't it also going up? Water vapor meets the cold sword and turns into water, so is the same for rain? ”

Hearing this, Bai Pu suddenly realized, and subconsciously blurted out: "Rain is boiling water vapor!" ”

Everyone present was also shocked when they heard it, it turned out that the rain in the sky was not the rain of some god, nor the sneeze of the dragon, but the vapor of boiling water!

Hu Hai scratched his head and said, "I can't say that, after all, we boil too little water, and it can't make so much rain at all."

In fact, the water around us turns into steam all the time, but it's so thin that we can't see it clearly.

And these water vapor floated up to the sky and began to gather into clouds, as for the dark clouds and white clouds, there is no difference, the essence is how much water vapor is, whether it is cold or not.

After the dark clouds turn into rain, the rain enters the rivers, lakes and seas again, and slowly turns back into water vapor and goes up to the sky again, and so on, and so on, and so on. ”

After everyone listened thoughtfully, many acquaintances also began to turn their heads and ears, and suddenly a peculiar accent shouted:

"Then we drink water, we use water for farming, and there is less and less water? Why is it that there is still rain every year, and even torrential rains? ”

The angle of this question is very peculiar, and everyone was stunned, Hu Hai's knowledge came from Qin Zheng and Zhang Cang, and he hadn't thought about it so much, and he was a little speechless for a while.

The audience discussed more happily when he stopped, and all the messy speculations popped up, and the scene was about to get out of control, and Hu Hai and Bai Pu didn't know what to do.

Hu Hai hurriedly followed the voice, hoping to find the person who asked the question, otherwise this preaching would be ruined in his hands.

However, the "bell tie man" didn't mean to dodge, I saw him come out of the crowd directly and stand in front of Hu Hai.

Hu Hai saw that the person who came was a fourteen or fifteen-year-old boy, with sword eyebrows and starry eyes, heroic spirit, tall and straight, and wheat-colored skin looked very strong.

The only fly in the ointment is that his Qin people's clothes don't fit well, just like someone else's.

Although Hu Hai was a little overwhelmed, the sturdy young man was very casual, and after trying to learn Hu Hai's salute, he stood in place and smiled without speaking, as if waiting for Hu Hai's answer.

Hu Hai could only reluctantly return the salute and admitted: "I don't know how to answer the questions raised by this audience, I don't know if the son has a high opinion?" ”

The young man just smiled, waved his hand seemingly casually, and said, "Don't you Daqin have a wise man?" ”