Han Cheng's affirmation and praise made Shitou's face, which turned red with excitement, become even more rosy.

At this time, his heart was filled with joy, just as happy as when the Son of God came to teach them how to write many years ago, and when he spoke Mandarin, he always did it quickly and well, and was praised by the Son of God.

Those who were ignorant seemed to have caught something, but there were some who could not catch it completely. After listening to Shitou's words, they carefully recalled the scene when the Son of God slowly turned the fruit, and they could not catch it before.

Things suddenly become clear now.

Yes, it’s because the earth rotates from west to east, so the east side sees the sun first.

As the earth continues to rotate, in their eyes, the sun keeps moving westward. When the location of their tribe moves to a place where the sun cannot shine, the sun disappears.

It turns out that this is why there are day and night!

It turns out that the sun rises in the east and sets in the west, not because the sun itself is moving, but because the earth on which it and other people live is rotating!

Many people were surprised, feeling as if a brand new door was opening in front of them.

At the same time, their vision was no longer limited to the small piece of land they already knew, but expanded to a much larger place.

When they set their sights on the stars and the sea, knew these extremely astonishing secrets, and understood what the land they lived on was like, when they looked back at the place where they lived, they felt that it was not that big.

But at the same time, after you understand your own insignificance, you will not feel arrogant and will not be easily satisfied.

"Now, can someone tell me why it is hottest at noon, but gets colder at night?"

Han Cheng looked at everyone, paused for a while, and continued to ask questions, letting the people in the tribe think for themselves.

"It's because at noon, the sun shines, but at night, the sun doesn't shine."

This question is relatively simple. As soon as Han Cheng finished speaking, many people raised their hands.

Han Cheng asked one of them to stand up and answer.

"Very good! It's because the sun can shine at noon, but not at night. It's just like when we warm ourselves up around a fire, the side that's baked by the fire will be warm, and the side that's not baked will be

cold."

Han Cheng nodded in approval, then looked at the happy man and continued: "Then can you tell me, why is it hot at noon but cooler in the morning and evening? Morning and evening are the same as noon, but

They are all exposed to the sun."

After such a question was asked, the person who answered the question was immediately stunned.

Yes, the sun is shining in the morning and evening, so why is it the hottest at noon?

Not only her, but many people sitting in the big blue brick house were embarrassed by the question Han Cheng asked again, and they were thinking hard there.

"Son of God, I know!"

After a moment, Shitou raised his hand, looked at Han Cheng and said excitedly.

Han Cheng asked the man to sit down and let Shitou do the talking.

"It's because we are far away from the sun in the morning and evening, and close to the sun at noon.

It's just like warming yourself up to a fire. The closer you are to the fire, the hotter it will be. The farther away you are, the less hot it will be."

Shitou stood up and said, and also imitated Han Cheng's example, taking the well-known practice of roasting over a fire as an example.

A smile appeared on Han Cheng's face again. This guy Shitou is really talented in these areas, and he has the same style as he did back then.

"Then, how do you know that it is closer to the sun at noon and farther from the sun in the morning and evening?"

Someone asked the stone a question.

Seeing this, Han Cheng didn't say anything, but looked at the person who asked the question and Shitou with a smile, wanting to see how Shitou would answer.

"This is very simple. Not long ago, the Son of God used ropes and fruits to demonstrate to us that the distance from the sun to the edge of the earth is farther than the distance to the middle. Using the same method, we can figure out this."

Faced with such a question, Shi Tou was not at all shy and opened his mouth to speak out the solution.

When Han Cheng heard this, a smile appeared on his face again.

Shitou's brain is really good, he actually thought of the experiment he did not long ago.

At that time, I wanted to explain to them why it gets hotter as you go south. Unexpectedly, Shitou actually used it here.

The same method can indeed be used to explain and verify this aspect of the problem.

When Shitou said this, many people thought of the experiment Shenzi did in the rabbit pen before, and then connected it with the present, and found that this was indeed the case.

Seeing everyone's reaction, Shitou felt even more comfortable, feeling a sense of joy that a bully would torment a bastard.

"Then, why does the sun look so big in the morning and evening, and so small at noon? Doesn't it look bigger when it's closer, and smaller when it's farther away?

"

Another person spoke up, his voice full of confusion.

As soon as these words came out, everyone who just thought Shitou was right also became confused.

The closer you are to the fire, the warmer it is. At noon, you are closer to the sun, so it is hot. This doesn't sound wrong.

But at a close distance, the sun should appear to be the largest, but in reality, the sun appears to be the smallest at noon.

As soon as these two things are linked together, it immediately makes people's heads spin. Even the stone that was full of confidence just now is confused by this question and its brain is full of mush.

He felt that the sun was closer at noon, but he couldn't figure out why the sun seemed much smaller at noon than in the morning and evening.

For a moment, everyone in Qingque's big tile-roofed house was confused by this tricky question, and their minds were full of confusion.

Han Cheng was not surprised at all that everyone in the tribe was confused by this question, because it was an eternal problem.

When Confucius traveled eastward, he saw two children arguing about the sun. Confucius was stunned by this tricky question and was speechless. He was also laughed at by the two children.

The people of my own tribe have now encountered this eternal problem, and it is normal for them to be stunned.

When he was in school, he was also confused when he learned this text. He felt that what the two children said made sense.

He was confused about this issue until he went to high school and studied geography before he finally figured it out.

"Son of God, is it closer to the sun in the morning or at noon?"

Shitou, who was so dizzy, finally couldn't help but ask Han Cheng.

At first, he had no doubts about the results he had obtained, but now, he was shaken.

The rest of the people also looked at Han Cheng, wanting to get an accurate answer from their divine son to solve this problem that made their heads hurt.

"Of course it is closer to the sun at noon and farther from the sun in the morning and evening."

This and other questions could stump Confucius, who was seriously partial to academic subjects, but they could not stump Han Cheng, a liberal arts student with excellent geography scores.

After hearing Shitou's question, he gave an accurate answer very simply and without saying a single word.

In the past, after getting the accurate answer, many people in the tribe would not continue to inquire further, but this time it is different. They all particularly want to know why this is the case.

Why does the sun look so big in the morning, but turns out to be far away from the ground...

Seeing does not necessarily mean believing. In many cases, the eyes can also deceive people and give people an illusion.

"This is because in the morning, the sun shines in obliquely, and is particularly refracted by the atmosphere surrounding the earth, magnifying the sun.

But at noon, the sun shines more directly, and instead of magnifying the sun, the sun's original appearance is revealed, so at noon, the sun looks smaller."

Of course, everyone in the tribe couldn't understand such words, and even the most talented Shi Shi was confused.

Han Cheng thought for a while, then asked someone to get a piece of ice from the water basin outside, carefully made it look like a convex lens, and then placed it in front of one of his eyes.

Then, everyone in the tribe was surprised to find that one eye of the Son of God was much larger than the other eye.

When Han Cheng removed the ice cube from his eyes, the eyes immediately returned to their normal size.

"In the morning, the atmosphere acts like an ice cube, amplifying the sun. But at noon, when the sun shines directly, the atmosphere has no amplifying effect."

As Han Cheng spoke, he replaced a flat ice cube and placed it in front of one eye. His eye looked about the same size as before.

This magical scene made everyone marvel, but at the same time, through this analogy experiment, many people in the tribe also understood what was going on.

After Han Cheng saw that many people understood it, he gave the ice cubes in his hand to the people sitting in front and asked them to play with them.

"Son of God, the earth we live on is a big round ball, and it keeps spinning in circles. Why hasn't that person been thrown out?"

While everyone was curious about the ability of ice cubes to magnify things, Wu, who had been silent until now, finally asked a question.

He had been struggling with this question for a while, but could not think of a reason. At this time, seeing that no one was asking questions, the Son of God did not explain it anymore. After thinking about it, he stood up and said it out.

After the witch's voice sounded, the big blue brick house with tiles suddenly became a lot quieter. After understanding the question asked by the witch, the big blue brick house with tiles became even quieter.

If Wu hadn't brought it up, they really wouldn't have realized this problem.

Now that the witch said this, and they thought along the witch's train of thought, they suddenly fell into the same confusion and doubts as the witch.

Seeing this, Han Cheng sniffed. Fortunately, he is a time traveler, otherwise he would have been questioned by you.

He looked at everyone, cleared his throat, and was ready to stand on the shoulders of giants and grab Mr. Newton's apples.

"This is because the earth we live in has a kind of attraction that can attract us all, not just us, but everything on the earth will be attracted.

It is precisely because of the existence of this invisible and intangible attraction that we will not be thrown away by the rotation of the earth."

Just as Han Cheng thought, after he threw out the gravity, everyone in the tribe stopped talking. Their eyes were either surprised, confused, or thinking...

"But, Son of God, birds can fly in the sky, and I can also jump up."
To be continued...