Hearing Huang Yueying's words, Lu Zhi sneered: "This is impossible. How can there be a lamp in the world that can lift itself up?"

Lu Bu smiled beside him and said, "Mr. Lu, there are really such lamps. This incident happened really. Just when he attacked Shanyue Lotus Peak."

Even if Lu Bu came forward to testify, Lu Zhi still refused to believe it.

"Impossible, absolutely impossible! Seeing is true, hearing is false. Unless you let me see it with your own eyes, I will never believe it."

Lu Bu nodded and said, "Okay, please wait for Mr. Lu. I will get the materials now and I can make them soon."

After saying that, Lu Bu went out and ordered people to prepare for the production of Kongming lanterns - um, now it should be said that the materials for Lu Bu lanterns have gone.

There are actually not many materials for making Lu Bu lamps, and the production is also very simple. Someone soon sent the materials.

Cai Yong and Cai Yan both surrounded each other curiously, wanting to see how Lu Bu made this Lu Bu lantern.

In fact, Cai Yong and Cai Yan were both half-believing and half-doubted, and they didn't really believe that Lu Bu could make Lu Bu lanterns that could be launched, because this was completely beyond their understanding.

Especially when the materials used by Lu Bu are extremely simple.

Lu Zhi looked at him with disbelief on his face, completely disbelief.

Lu Bu cut it with the paper and quickly made it into a simple Lu Bu lantern with candles inside.

"Okay, the production is finished!"

It's so simple?

Now let alone Cai Yong and Lu Zhi, even Cai Yan doesn’t believe it because this structure is too simple. You can just depreciate it with a piece of paper? Why don’t you go to heaven by yourself!

"Brother Lu, can this light really fly into the sky?"

Lu Bu smiled and said, "I know you don't believe it. Now I'll experiment with you and you will know."

After saying that, Lu Bu walked to the yard outside with the Lu Bu lantern, and lit the candle.

Soon, the Kongming lantern rose up and became higher and higher, and soon turned into a small black dot in the eyes of everyone.

"This, can this really go to heaven?"

Cai Yong and Lu Zhi opened their mouths wide and were shocked to the point where they could not be relieved for a long time.

Even Cai Yan showed an incredible look.

After a while, Lu Zhi recovered and couldn't help asking, "Fengxian, how did such a simple paper lantern rise to the sky?"

Before Lu Bu could speak, Huang Yueying took the lead and said, "This is actually very simple. After the candle is lit, it will generate heat. After the air is heated, it will rise, so it will take Lu Bu lamp to the air."

As a result, the three of them couldn't understand Huang Yueying's explanation at all.

The three of them looked at each other and saw confusion in each other's eyes.

Cai Yong couldn't help but ask embarrassedly: "Miss Yueying, can you explain it in detail? We don't understand very well."

Huang Yueying said impatiently: "This is the truth. If you don't understand it, it only means that you are stupid!"

Ahem!

He was actually despised by a little girl's movie, but he was still unable to fight back. Cai Yong and Lu Zhi both blushed.

Even Cai Yan couldn't hold back her face.

Lu Bu said patiently next to him: "Yueying, you are about to be a role model and be patient. If you want to teach students with this attitude, do you think your students can learn knowledge? You must pay attention to methods and methods when teaching!"

Hearing Lu Bu's words, Huang Yueying immediately said obediently: "Oh, Brother Lu, I understand!"

Lu Bu turned his head and said to Cai Yong and Lu Zhi and the other three, "Mr. Lu, I believe you have seen the scene of boiling water. Have you ever thought about why the water boils when it boils?"

When Cai Yong and Lu Zhi were both stunned when they heard Lu Bu's inquiry.

What's there to say about this? The water boils when it boils. It should be like this!

But is it really that simple?

If it was really that simple, would Fengxian ask solemnly?

For a moment, the three of them couldn't help but fall into deep thought.

Lu Bu explained: "We also put a cup of hot water for a while, and when you drink it, you will find that the water on top is warm, and the water on bottom is cooler."

All three of them had experienced this phenomenon. After hearing what Lu Bu said, the three of them couldn't help but nod.

Lu Bu continued: "This is because of thermal expansion and contraction. After the object is heated, its volume will increase, its weight will become lighter, and it will rise. So when drinking water, the water above is warm, and the water below is cool."

"The same is true for boiling water. The water that comes into contact with the bottom of the pot will rise rapidly after being heated, so the water will boil! The Lu Bu lamp I made is the same. After lighting the candle, the volume of the air heated expansion will increase, which will drive the Lu Bu lamp to air."

Lu Bu's explanation was already very detailed, but the three of them still didn't understand it very well.

Lu Zhi couldn't help but ask, "Bengxian, we understand what you said about boiling water. But this Lu Bu lamp is different. You obviously lit a candle, and there is nothing else? What is the air you mentioned in Fengxian?"

Well, the concept of air at this moment has not been proposed yet!

Lu Bu explained: "The air is invisible, colorless, odorless, invisible and intangible, and is filled with heaven and earth, but it is indispensable. What we breathe at every moment is the oxygen in the air."

It was difficult for three people to accept the concept of air for a while.

But Lu Bu's last words made them look thoughtful.

Everyone is breathing every moment. If there is no air, what are they breathing?

Lu Bu continued: "The natural science I am planning to establish is to study these things. Most people are used to what is happening around them, but in fact there are often certain rules in it."

"For example, why does the sun rise east and set west? Why does the water flow to the low places? What will thunder in summer? What will rain? What will snow in winter?"

After hearing Lu Bu's words, Lu Zhi and the other three couldn't help but fall into deep thought.

After a while, Lu Zhi bowed deeply at Lu Bu and said sincerely: "Listen to your words is better than reading for ten years! Fengxian's words are like a drum and a bell in the morning, which has benefited me a lot!"

Lu Bu hurriedly helped Lu Zhi up and said with a smile: "Mr. Lu must not do this, it's really a slander. The so-called "speaking and learning are in succession and specializing in skills. Even a saint cannot be omniscient and holistic. These are actually just some partial knowledge."

In fact, natural science is definitely not a partial science, but in this era, no one has been able to recognize the importance of natural science.

Lu Zhi said seriously: "Natural science is by no means arbitrary knowledge. I have a premonition that natural science will soon show its huge effect."

...

Finally, it was confirmed that Lu Zhi was appointed as the principal and Cai Yong was appointed as the vice principal.

Because Cai Yong was Lu Bu's father-in-law, Lu Zhi strongly recommended it, but Cai Yong refused because the Lu Bu dictionary had not been compiled yet.
Chapter completed!