Chang'an City, within the palace of the Han Dynasty.

The sun is scorching.

Liu Cheng, who has become the king of Han, is standing in the sun, pouting and squirting water.

Yang Xiu, who was standing not far from him, was dumbfounded.

The reason why he was stunned was not because he was surprised by Uncle Huang's similar and somewhat malicious behavior.

At this time, his attention was on the rainbow in front of the emperor.

In front of the imperial uncle, as the imperial uncle spit out a mist of water, a rainbow appeared there.

Although it was far less obvious than the rainbow that sometimes appeared in the sky after the rain, it still shook him speechless.

This...... It's shocking!

How can a rainbow appear with such a spray of water casually?

Isn't there a lot of people who say that the rainbow appeared after the rain and the toad opened its mouth and dried the jewels in its mouth after the rain had passed and the sky was clear?

I heard that the jewel is a priceless treasure, and whoever can get it will definitely become a rich man.

How did this come to Uncle Huang's place, and suddenly it became completely different?

How can a rainbow appear in Uncle Huang's mouth?

Could it be ...... Is it that Uncle Huang also has such a baby bead in his mouth?!

"Uncle Huang, you ...... How did you do that? ”

Yang Xiu looked at Liu Cheng and said dumbfounded.

When he said this, his eyes couldn't help but look at Liu Cheng's mouth.

I want to see if there is a colorful mysterious orb inside.

Liu Cheng stretched out his finger and pointed to the bowl next to him, and said with a smile: "This thing is very simple, you can come by yourself."

If you follow what I just did, you can also create a rainbow. ”

Yang Xiu looked skeptical.

Just take a sip of water and spray it outside, and you can have a rainbow?

This...... It can't be, right?

He is not Uncle Liu Huang.

Although he is also very smart, after all, this status or something is far inferior to Uncle Liu Huang.

Uncle Liu Huang can have such great ability, it doesn't mean that he can too.

However, despite this thought, he still picked up the bowl with curiosity and excitement, and took a sip of water.

Then, following Liu Cheng's appearance, he sprayed out vigorously at the sun in the sun's sky.

And then something magical happened.

As the water in his mouth turned into a mist and erupted, a brilliant rainbow also appeared in front of his eyes.

Red, orange, yellow, green, blue, purple......

Yang Xiu was stunned for a moment, and the whole person looked a little stunned for a while.

Then, Yang Xiu successfully incarnated into a small whale.

Here is a constant spray of water against the sun.

spit out three bowls of water in a row, spraying myself a little dizzy, and then I stopped.

"Uncle Huang, this ...... What the hell is going on?

How is this ...... How can a rainbow appear with such a spray? ”

Yang Xiu's whole person still looked a little confused.

He looked at Liu Cheng for advice.

At this moment, all this pride in his heart was gone, and only a thick vibration remained.

Seeing this, Liu Cheng smiled and said, "This thing is what I want to tell you."

It's actually a very simple thing, and it's basically the refraction and dispersion of light.

These small water droplets are transparent, and after countless small water droplets are formed in the air, they will decompose and refract the sunlight......

And then there is this rainbow in front of you.

These are actually the colors of sunlight.

If you can make a prism, you can decompose the sunlight and see the color of the sunlight......"

Liu Cheng looked at Yang Xiu and explained.

Yang Xiu, who was originally extremely proud in his heart, at this time, the pride in his heart, and the idea of wanting to frustrate Liu Cheng, completely disappeared.

Only a thick shock remained.

Subsequently, Liu Cheng answered some of Yang Xiu's remaining questions.

Then he picked up a pen and let Yang Xiu look at it.

Then he let go of his hand, and the pen fell straight down.

Liu Cheng looked at Yang Xiu and said, "Do you see something?" ”

Yang Xiu looked at Liu Cheng, and then at the pen that fell on the ground, carefully recalling what Uncle Liu Huang had done, and he seemed very ignorant for a while.

Particularly dazed.

I don't know what the significance of Uncle Liu Huang doing this thing is.

What can be seen from this?

Didn't you just take a pen, let go of the pen and drop it on the ground?

Isn't that normal?

It's trying to make yourself watch, is this one of good quality?

Or is it that Uncle Liu Huang is implicitly telling himself in this way that he needs more literati to support.

If you don't support it, it means that the literati's pen will fall to the ground and be shattered?

For a while, Yang Xiu thought about a lot of things in his heart.

But even if he thought he was extremely smart, he couldn't guess what Uncle Liu Huang thought.

What kind of mind do you have.

Liu Cheng saw Yang Xiu's expression looking at him, and he kept changing.

I knew that he definitely misunderstood what he meant.

I can never guess what I want to express.

He immediately said, "I mean, you didn't notice why the pen in my hand fell down when I let go of my hand?" ”

After hearing Liu Cheng's words, Yang Xiu was even more dazed.

Why does it fall down?

Hasn't that always been the case?

Why does Uncle Huang still ask himself these questions?

Isn't that what everyone knows?

Isn't that the most common thing that three-year-olds know?

You let go, and there's nothing down there, so naturally you're going to fall down......

If it was before, Yang Xiu would definitely feel that this Uncle Liu Huang was extremely stupid, and would actually ask such a simple thing.

But now, after this consultation with Uncle Liu Huang, he has completely changed this idea in his heart.

I feel that in this world, there are two smart people so far, one is him Yang Xiu, and the other is Uncle Liu Huang in front of him.

Moreover, if you really count it, this Uncle Liu Huang seems to be a little smarter than himself.

Someone as smart as himself would naturally not ask such a stupid question.

When he asked, he must have had a deep meaning in it.

At that moment, I didn't say what was in my heart.

Just stand there and think.

But after thinking about it for a while, I still don't understand.

In the past, Yang Xiu only felt that he was the smartest person in the world.

But at this moment, in the face of Uncle Liu Huang's question, this seemingly simple question, he couldn't think of anything.

All of a sudden, faith suffered a great blow.

After standing here and thinking for a while, Liu Cheng continued to speak and guided Yang Xiu.

"Think about it, why does it fall down when we let go, instead of going up, or to the left, to the right?

Also, I didn't tell you before that the earth is a circle.

And it will turn here.

Watching the sun rise in the east and set in the west at the turn of night is not because the sun is rotating there, but because the earth is turning.

In the daytime, the place where we live turns to the side facing the sun.

At night, they turn to the side facing away from the sun.

The sun was always there.

In such a situation, haven't you ever thought that if you stand on top of a ball like this, and the ball is still spinning like this, we won't fall? ”

After hearing Liu Cheng say these words, Yang Xiu became even more stunned.

Oh, yes!

Why does the brush fall when it lets go, instead of running somewhere else?

Why does such a big ball still rotate, and people will not fall down when they stand on it?

This...... How could this be the case?

While being stunned, there was also a feeling of sudden enlightenment in my heart.

However, after this sudden enlightenment, it soon became a greater doubt.

This thing...... It's really evil.

Moreover, just now, Uncle Huang had already demonstrated to himself so obviously with a brush.

I want to tell myself this.

But I, who has always thought I was extremely smart, didn't think of this aspect.

It's a bit uncomfortable.

This imperial uncle...... Sure enough, a little smarter than myself.

He thought so in his heart, and found comfort for himself.

Yang Xiu is a character who does not admit defeat, although for a while, he was asked this question,

My heart was shaken.

But he didn't ask Liu Cheng directly for the answer.

Just ponder here.

But after thinking about it for a long time, I didn't have any reliable ideas.

But he refused to throw in the towel.

He looked at Liu Cheng and said, "Uncle Huang, this question is a little sudden, I ...... I'll go back and think about it.

Think about it before you answer. ”

Liu Cheng nodded and said, "Yes, think about it, you just need to think about it a little more to do this."

Only when you think more can you get more answers, and your thinking will become agile......"

Yang Xiu left from Liu Cheng, and when he left, he looked a little depressed.

When I saw Guo Jia coming towards me, it was as if I didn't see it.

It's still extremely heavy.

The whole person is like losing his soul.

Guo Jia looked at Yang Xiu in such a state, and he looked a little funny for a while.

This kid has been beaten by society, right?

I was hit by Uncle Huang, right?

However, Guo Jia was also very curious about what kind of method Uncle Huang used to make Yang Xiu, a smart and clever person who still refuses to admit defeat, look like this.

After coming to Liu Cheng, he asked Liu Cheng with a smile.

Liu Cheng smiled when he heard this: "It's nothing, it's just that I explained some of the questions he asked and asked him a question."

"Then Uncle Huang asked Yang Xiu, what kind of question?"

Guo Jia looked a little curious in his heart.

After being able to ask a question, Yang Xiu was made like this, which shows that Uncle Huang's question should be extremely not simple.

Although Guo Jia does not have Yang Xiu's arrogant posture or anything like that, he has always felt in his heart that he is a smart person.

And he is indeed a smart man.

And smart people often have a common problem, or it can't be said to be a common disease, but they have their own pride.

I just like to challenge something that is more difficult.

Especially when it comes to IQ.

If others can't solve it, I can solve it, and then this time I will highlight myself.

This is a very normal thing.

Seeing Guo Jia ask like this, Liu Cheng immediately knew his thoughts.

smiled at the moment and told Guo Jia what he had just said.

Then, Guo Jia, who was full of confidence and wanted to solve this problem, was stunned all of a sudden.

I was also a little confused by this question.

This...... This was unexpected.

Sure enough, the most difficult thing to answer is not actually some incurable disease, or some extremely advanced question.

The most difficult things to answer are often things that are commonplace and have long been accustomed to them.

These simple things often make your hair fall out, and you can't think of the result.

After seeing Guo Jia also standing here, falling into a state of extreme entanglement and contemplation, Liu Cheng couldn't help but smile in his heart.

In this era today, it is really a bit of a bully to directly throw out this East issue.

However, looking at smart people like Yang Xiu and Guo Jia, under this question, they were directly made to look a little autistic, not to mention, I still feel very good in my heart.

After a while, Guo Jia looked at Liu Cheng and said, "Uncle Huang, why do you say this?"

Why does something fall down and not run to its place?

We're on top of this big ball, and the big ball is still spinning, so why don't we fall? ”

Guo Jia and Yang Xiu are different.

Yang Xiu was young and vigorous, and many times refused to give in.

Guo Jia is different.

Guo Jia was here, thinking for a while, and after finding that he couldn't figure it out, he immediately began to ask Liu Cheng for advice and seek answers.

He didn't feel ashamed of that.

If you don't understand, you have to ask.

However, while asking, he didn't feel that what Uncle Liu Huang said was nonsense.

It was deliberately thrown out to fool people.

Since Uncle Huang said it, then he must know the answer.

Because during these times, he has seen too many similar things in Uncle Huang.

Liu Cheng didn't sell anything, and immediately told Guo Jia about gravity with a smile.

After Guo Jia heard this, he looked a little puzzled.

But at the same time, there are also some sudden realizations.

There are a lot of new feelings in my heart.

These, it's so interesting.

Although it is far different from Confucianism, scriptures and other things, it can often give people a feeling of sudden enlightenment.

It makes people's thinking feel as if they have been broadened......

Guo Jia was here, reported some things to Liu Cheng and left, and Xu Shu came to Liu Cheng to ask for a meeting.

"Uncle Huang, Xu Shu came here this time to bid farewell to Uncle Huang."

After seeing Liu Cheng, Xu Shu looked at Liu Cheng and saluted respectfully.

Then he looked at Liu Cheng and said something like this......