Gao Yang glanced at Shahr next to him, and when he saw that it was a Hu man, he couldn't help frowning, and just wanted to say something, but was stopped by Princess Changle.

At this time, Jiang Wei spoke on the podium.

"Ladies and gentlemen, Jiang Wei. As you can see, I'm just an ordinary person of flesh and blood, nothing special. ”

There was silence in the audience.

In this world, for gods and immortals, although most learned people don't believe in these things. But there are some people who are still convinced of this.

Otherwise, Buddhism would not have flourished in this Tang Dynasty. After all, many, many heavens and earths are naturally now, and many people can't understand them at all, which is one of the reasons why there are still many people who believe in the theory of ghosts and gods.

But it has always been rumored that the disciple of the Immortal Family said that he and others were just ordinary people, which made many people unable to understand why he did this.

Fang Xuanling was also a little puzzled, didn't he tear down his own signboard?

Jiang Wei saw that the people in the audience were puzzled, and he smiled. In order to survive in this world, he had to lie. Because it's a means of self-preservation.

"Although I am an ordinary person with flesh and blood, there is one thing that is different from everyone here, that is, I have to pass on my immortal master Qinglian Sword Immortal in my dream to teach immortal art to me."

Jiang Wei said seriously,

"What is Immortal Magic? Many people may think of flying clouds and fog, calling for wind and rain, and controlling thunder and lightning. I can tell you all that it can be done. ”

There were bursts of exclamations from the audience.

So, how? Immortal magic does not arise out of thin air, it requires a premise, that is, to what extent do you understand the nature of this world? ”

Although most of the people in the audience didn't believe in ghosts and gods, they still listened to it.

"So what is the nature of this world? The essence of this world is the truth, the truth is unique, it is irrefutable, in ancient times, the cultivation of the immortals was to explore, to explore the essence of this world, for example, they explored why it rained in the sky, why did it snow in the sky? Eventually, they discovered the causes of rain and snow, and developed the magic of summer ice and rain. ”

"Everyone knows the immortal art of freezing in summer, but have you ever thought about why water can freeze in summer?"

Many people in the audience have thought about this problem, but they have never had a clue, including Fang Xuanling.

Suddenly, a nice voice sounded.

"Can you tell me, then, why saltpeter freezes when you put it in water?"

Jiang Wei followed the voice, and in the most row, he saw a woman dressed as a man. This person is Gao Yang.

Seeing that her face was unconvinced, Jiang Wei didn't care, just said lightly,

"Okay, but before I announce the answer. First of all, let's first think about why it is always in the winter when it freezes? ”

Gao Yang frowned and thought about it seriously. Isn't that because it's cold in winter?

"It seems that many people know the reason, and that is the cold weather. The temperature drops, and when the temperature drops to a certain point, it freezes. So, is this the truth? I can tell you responsibly that when the weather reaches freezing, then the water will freeze, and that's the truth. ”

Gao Yang couldn't help but ask,

"What is Degree Zero?"

Jiang Wei looked at this cute little girl and praised,

"Good question, the immortal master taught me that everything in the world has a saying of cold and heat, which can be called temperature. And the temperature can be measured. And the immortals of the ancients, they set a standard for temperature. For example, the temperature at which water freezes is zero, the temperature of the human body is between 36 and 37 degrees, or when the water is boiling, its temperature is 100 degrees. ”

Gao Yang blinked, she understood what Jiang Wei said, and asked rhetorically,

"Then how do I know what temperature I am, and if you're lying?"

Jiang Wei nodded slightly,

"I have a thing here, it's called a thermometer, it's specifically for measuring temperature, you can try it, clip the thermometer under your armpit, you can measure the temperature of your body, of course, it takes some time."

After speaking, he nodded to Li De and Li Erniang.

Li Deyu and Li Erniang took the thermometer and distributed it to everyone, and for a while, everyone began to measure their body temperature with half-belief.

moment

"Alright, please take out the thermometer and take a look."

The audience took out the thermometer one after another, Gao Yangyang and Changle took it out to take a look, Gao Yang's body temperature was between Sanshilu and Sanshiqi, and Changle was biased towards Sanshiqi. Everyone looked at their thermometers and then looked at the people around them. I was amazed for a while. But there are also many people who show greed for the transparent glass thermometer in their hands.

They are not greedy thermometers, but greedy for the method of making glass.

In Datang, glass is not transparent, and the method of glass has always been in the hands of the royal family, and it is difficult for ordinary people to obtain. For a while, many people with five surnames and seven families looked at each other.

Jiang Wei didn't notice this, but he smiled and asked people to put away the thermometer, and then continued to speak,

"So, does it make sense for us to understand the temperature and calculate it? The answer is yes, and it means a lot. As I said earlier, truth is unique. When water boils, that's 100 degrees, that's a unique truth. When water freezes, it must have reached zero degrees, and this is also a unique truth. ”

"Then saltpeter was put into the water, and the water froze. There is only one reason, the temperature of the water drops to freezing. Why does the water drop to freezing? That is, when saltpeter encounters water, it will absorb the temperature in the water. When the temperature is absorbed, it naturally lowers the temperature, and when it drops to zero, it naturally freezes. This is immortal magic, which is not performed out of thin air, but created according to the truth. ”

At this moment, everyone in the audience suddenly realized.

"You said before that immortal magic can spread rain, so how should immortal magic do it? How? ”

The man who looked like a boy in the audience finally couldn't help but ask.

Jiang Wei glanced at this boy brother curiously, and looked at the white and tender skin, and knew that it was from a big family.

It's really not that difficult to deal with this question, I learned it in high school.

At that time, the chemistry teacher was talking about the chemical formula AgI of silver iodide.

As long as the silver iodide missile is launched into the cumulus cloud, it can promote rain.

But this thing is not very easy to make in this era, and it also has negative effects.

But this does not affect Jiang Wei pretending to be forced,

"It's not hard to make rain, but first, we need to find the natural truth of rain. So why does it rain? How does rain form? ”

Brother Gongzi frowned, looked down and thought,