"Uncle Emperor, this young man Yang Xiu is very smart.
But there are some problems with my temper.
Don't be annoyed by what he said.
I couldn't help it for a while and clicked it."
After hearing Liu Cheng say that he would call Yang Xiu over to explain some issues, Guo Jia seemed a little worried and reminded Liu Cheng here in advance.
When Liu Cheng heard this, he almost laughed out loud.
Yang Xiu, he knows this.
It can even be said that he understands Yang Xiu's temperament and character better than Guo Jia.
But at this time, Guo Jia was able to say these words to him, which shows that this Yang Xiu is exactly the same as recorded in history.
It can be seen that during this period of time, his dealings with Guo Jia gave Guo Jia a lot of insights.
Hearing what Guo Jia said, Liu Cheng couldn't help but think of Mi Heng, the number one troll in the Three Kingdoms.
An existence like Yang Xiu is already much better than Ni Heng.
When encountering a being like Mi Heng, he really wants someone to pull out his sword and stab him to death on the spot.
But sometimes, if I think about it carefully, I have to admire the courage of people like Mi Heng.
After all, there is a huge difference between this time and later generations.
In later generations, with the development of the Internet, people cannot follow the Internet cable to kill people.
Everyone was wearing a vest, so it was impossible to tell who was who.
I don't even know where you live.
Therefore, human nature has been infinitely magnified.
Many people can breathe air every second by holding a keyboard in their hands.
With the keyboard in hand, I have the world.
Whatever he catches, he squirts it wildly.
The most important reason for this is that they know there is no danger to their lives.
You won't have to pay any price for it.
Once such people are put into reality, many of them are often cowards...
But Mi Heng, the number one troll in the Three Kingdoms, is completely different.
The people he came into contact with were all people he could actually meet.
And many of them are very powerful people.
There is no such thing as using your own vest.
Mi Heng just started spraying like this.
Completely regardless of his own life or death.
Comparing Yang Xiu and Mi Heng, it can only be said that they are far behind.
Liu Cheng was also thinking that only Yang Xiu made Guo Jia say this. Then if he met Mi Heng, the biggest troll in the Three Kingdoms, what kind of reaction would Guo Jia have?
He didn't know what kind of mood and reaction Guo Jia would have, but he knew that if he could really meet a person like Mi Heng.
Mi Heng is also so careless, spraying at himself, and spraying just for the sake of spraying. According to his temper, he will definitely not be treated favorably.
There will inevitably be revenge.
It is many times more refreshing to do than what Cao Mengde did.
After Guo Jia left, it didn't take long for Yang Xiu to hurry towards Liu Cheng.
In Yang Xiu's hand, he held a notebook, which recorded a lot of things.
These are some of the thoughts he has been having during this period of time.
With these thoughts, he had stumped Guo Jia and some others.
At this time, when I went to see Uncle Liu Huang, he was in a very excited mood.
But while I was excited, I also had many thoughts in my heart.
The most important one is that he wants to give Uncle Liu Huang a show of strength.
Use the questions you have come up with to ask Uncle Liu Huang for advice.
Uncle Liu Huang was also stopped.
In this way, you will have face and be able to highlight your intelligence.
Moreover, this method can also be used to attract Uncle Liu Huang's attention to himself.
Show your talents.
With this in mind, Yang Xiu's steps became faster and faster.
I was even more impatient, wanting to meet Uncle Liu Huang, and quickly put into practice what I had in mind.
"Young man Yang Xiu, I have met the King of Han."
After Yang Xiu saw Liu Cheng, he greeted Liu Cheng respectfully.
Compared to Mi Heng, Yang Xiu's emotional intelligence is still much higher.
It’s not just spraying for the sake of spraying.
Liu Cheng nodded, smiled and asked him to sit down and talk.
Yang Xiu was not polite. He saluted Liu Cheng, thanked him, and sat down.
By this time, there was no futon for kneeling on Liu Cheng's place.
All have been replaced with stools and chairs.
He is really not used to kneeling and sitting.
I feel deeply disgusted.
This thing is really painful. If you only hold on to it for a short time, there will be no problem.
But if it lasts for a long time, it can be really uncomfortable.
"I heard from Fengxiao that you are very good at natural knowledge.
He teaches people and teaches very well.
Have you never done this before?
Sure enough, heroes come from young.
Although he is only a young man, he has already surpassed many people in this matter."
Liu Cheng looked at Yang Xiu and said.
Hearing His Highness the King of Han praise him in person, Yang Xiu couldn't help but smile.
It feels very special to my heart.
At the same time, the waist is straightened up.
Moreover, he didn't think there was anything wrong with Uncle Liu praising him so much.
I just feel that what Uncle Liu Huang said is very right.
I really deserve such praise from Uncle Liu Huang.
However, he didn't say that in his mouth.
"Uncle Huang was so impressed, it's just something very simple.
People can understand it at a glance, and it is worthy of the emperor’s uncle’s praise.”
Okay!
The words he said sounded modest, but in fact his tone was extremely arrogant.
Liu Cheng smiled when he saw this. This was indeed very Yang Xiu.
Immediately, he stopped being polite to Yang Xiu and said straight to the point: "I heard that Fengxiao said that you have accumulated a lot of questions and want to ask me for advice?
I have some free time today, so I can discuss these issues with you."
When Yang Xiu heard this, his psychological joy became even stronger.
Immediately he said: "Uncle, this is indeed the case.
This way of nature was not well understood in the past.
When I came into contact with it at this time, I felt that there was infinite beauty in it.
But there are also too many things that are incomprehensible.
The kid can't figure it out on his own, and even if he asks others, they won't know.
I have no choice but to come and invite Uncle Pope."
Liu Cheng nodded and said, "If you have any questions, just tell me.
Let me see if I can help you answer it.
However, I can’t have too many expectations, there may be some questions that I can’t answer or explain.”
Hearing Liu Cheng's words, Yang Xiu couldn't help but smile.
It's normal if you can't explain it.
If you explain it, how can you show your ability?
He didn't think what Liu Cheng said was modest.
I just feel that what Liu Cheng said is true,
After all, the questions he asked were so weird that he had already asked them to many people.
Even I can't think of the answers to these questions.
Although Liu Huangshu compiled the subject of nature, he probably didn't know much about it.
After all, these questions were raised by Yang Xiu himself, and he couldn't even answer them.
Hearing what Liu Cheng said, Yang Xiu felt happy in his heart.
He was not polite at all, he stood up, bowed respectfully to Liu Chenggong, and said: "Uncle, the first question I want to ask is why this land is round.
The place you mentioned we are in is a big ball.
But why do we look flat?
How can you prove it's round?"
Liu Cheng laughed when he heard this and said: "This is a big ball. The reason why you can't feel it is because it is too big on the surface.
Some of its changes are so big that we can't even feel them in such subtle ways.
Just like a person, from a child to an adult, and then to an old age.
Watching it day by day, it is impossible to tell how people grow up and how they age.
Only after a period of time has passed and you watch it, you will be surprised to realize that before you know it, your children have grown up and people have become older.
And this earth is similar.
You might say that there are mountains, flatlands, and rivers on the earth, with all kinds of ups and downs.
How could it be a ball?
All I can say is that what you see is microscopic.
If you take a longer view, you will find that this is not the case.
Although there are various differences on its surface.
But as a whole, it is just a ball.
If you don't understand these things or still have doubts, you can go to the prairie, or to the sea, or to the big rivers.
Go to the extremely flat and endless prairie to see galloping horses, and go to the river and sea to see sailing boats.
At that time you will find that when you see the sails in the distance, the first thing you see is not the whole ship, but the highest sail.
Then, from the highest point of the sail, the entire view of the ship emerged bit by bit.
The same is true when watching galloping horses on the endless grassland.
First you see the highest point of the galloping horse, and then as the galloping horse gets closer and closer to you, you can gradually see its full picture.
Doesn’t this mean that the earth is round?
If it is not round and has curvature, then the first time the galloping horse appears in front of our eyes, what we see should be the whole horse, not just the highest part of it."
Liu Cheng said this, then found a piece of paper and circled it into an arc.
Then with the other hand, I took a pen and started experimenting.
Let Yang Xiu sit there and look at the situation.
The result is indeed the case.
Yang Xiu looked at the pen tip that first appeared in front of him, and then thought about what Uncle Liu Huang said, and he gradually felt something different in his heart.
This seems...it does make sense.
"Have you figured it out yet?"
Liu Cheng looked at Yang Xiu.
Although Yang Xiu really wanted to cast some doubts on this matter.
But after listening to Uncle Liu Huang’s detailed account.
Then he looked at Uncle Liu Huang looking at him like this and asking.
If you don't understand it yourself, it would be bad if you continue to let Uncle Liu Huang explain it to you.
I am a smart person, how can I let others explain it over and over again and stick to a problem?
Doesn't this mean that I am too stupid?
He nodded immediately: "Uncle, I understand."
Liu Cheng nodded and said, "Then let's move on to the next question."
"Uncle Emperor, why does the sun look so big in the morning, but becomes so small at noon?
But the morning sun has no warmth
If something is closer to you, it will appear larger.
The closer you are, the hotter you get.
This is the same as when we sit there and warm ourselves by the fire.
But why does it get colder when the sun is closer?
It seems that the farther away you are, the hotter it gets?"
After Liu Cheng heard what he said, he immediately remembered the text about Confucius traveling eastward and seeing two children arguing about the sun.
When he was studying in primary school, this question also confused him a lot.
It feels so special and confusing.
I can't understand.
Moreover, even Confucius could not answer this question at that time.
But at this time, this is not a problem for Liu Cheng.
He looked at Yang Xiu staring at him with stern eyes, looking like he was seriously asking for advice.
Liu Cheng smiled secretly.
He knew that Yang Xiu wanted to embarrass him.
However, it is basically impossible to expect this kind of problem to stump yourself.
He smiled and said: "Sometimes, people's eyes can be deceiving.
The reason why it looks like this is actually giving you an illusion.
The sun looks bigger in the morning and smaller at noon, so it feels closer to us in the morning and farther away from us at noon.
But this is not the case.
The most important reason why this is the case is that some things on the celestial body cannot be seen with the naked eye.
In fact, the size of the real sun is the same whether it is morning or noon.
The most important reason why you feel different is the refraction of light..."
Liu Cheng stood here and explained to Yang Xiu.
After saying this for a while, Yang Xiu felt a little confused.
However, I also understood a lot of things.
After Liu Cheng explained to him in detail for a while, he smiled and asked Yang Xiu.
"What color do you think this sunlight is?"
Yang Xiu blurted out: "White."
After saying that, I felt something wasn't right.
"No, there are also red and yellow colors..."
After saying this once, he himself was a little unsure.
Some people can't figure out what color this common sunlight is.
After doing this for a while, he looked at Liu Cheng and said, "Uncle, what do you think the color of sunlight is?"
Liu Cheng smiled and said: "What you just said is actually correct.
They are all the color of sunlight.
Sunshine is not just one color, but seven colors."
Hearing what Liu Cheng said, Yang Xiuji felt right, but also felt something was wrong.
He looked at Liu Cheng, tilted his head and thought for a while: "Uncle Emperor, how can you know that the sun is colorful?"
Liu Cheng smiled and said: "What's so difficult about this?
You come out with me, I have a way to prove it to you."
Seeing this, Yang Xiu followed Liu Cheng outside.
As he walked, he thought about what kind of method Uncle Liu Huang could use to prove to himself that the sun is colorful.
