Seeing that Zhang Xianxian was a little confused, Wang Kang said with a smile, "let me put it another way. What do you think is the shape of the heaven and earth we are living in? What about the earth? "

This next piece of slender understand, directly said: "if you use this to test me, it's ridiculous."

"The sky is round and the place is round," Zhang said coolly.

Ha ha

Wang Kang, I knew you would say that.

That look again? Zhang Xianxian almost broke her silver teeth. She felt that Wang Kang was quite disdainful and hurt her heart.

Never before.

Zhang Xianxian gritted his teeth and said, "what? Does Master Kang have another opinion? "

Wang Kang asked: "then I ask you, is there any basis for your theory of round place?"

"What I said is of course based on the fact that everyone is like you, saying something inexplicable?"

Zhang Xianxian said in a cold voice: "we call the sky what we see when we look up, and the field that we depend on for survival is called the earth."

"Through observation, it can be found that the sun, moon and other celestial bodies are in endless motion, like a closed circle with no beginning and no end."

"and the earth, however, quietly carries us, just like a square object, still and stable!"

"This is the place where the sky is round!"

Afraid of Wang Kang's retort, Zhang added: "if it's not like this, it's also like the sun and moon's spherical rotation. Do you think we will stand firm?"

"Isn't the other side going to fall?"

With that, Zhang Xianxian seems to be looking at Wang Kang. Ordinary people don't study this theory, and only she can say it so clearly and thoroughly!

It's well founded!

Listen, Lin Yuyan and Li Qingman are also approved of the nod, this explanation is really said to make sense.

But they wondered, how did this sudden change of painting style become an academic seminar?

It's still such a partial discussion.

"Ha ha!" After listening, Wang Kang laughed.

Zhang Xianxian looked coldly, "what are you laughing at?"

"I laugh at your ignorance!"

"What did you say?" Zhang Xianxian couldn't bear it and immediately stood up.

This is the first time she has heard this from other people. She is Zhang Xianxian, who knows astronomy and geography.

Why she doesn't look up to others? Because she thinks others are stupid and some phenomena can't be explained, it's about ghosts and gods.

And Wang Kang is the biggest insult to her.

Wang Kang didn't seem to see Zhang's anger. He said with a smile, "it's said that Xuanping's daughter, though she is a daughter, has the talent of prime minister!"

"Knowing the past and the present, astronomy and geography, it seems that knowledge is not uncommon now."

"Isn't that ignorance?"

Zhang Xianxian snorted coldly and sat down again. She felt that she didn't have to compete with a black sheep.

What does he know?

In addition to the label of hooligan, it's time to add an egomaniac.

"I don't think you can explain it, you can't justify it, that's the sophistry here," Zhang said coldly, "I can probably understand your intention, but when I see where I come from, I want to put pressure on me, but I can tell you that you not only choose the wrong person, but also the wrong door!"

"Let's first talk about why the apple landed. What do you mean by gravitation, a word we've never heard of before?"

"And then leads to this question, I gave you an explanation, and you don't recognize it. I think you are just messing around and can't recognize yourself!"

Zhang Xianxian is not polite.

"The sky is round and the place is wrong, you don't know it yet!"

Wang Kang met Zhang's eyes and said, "we are like the sun and the moon. We are all spheres."

"The sky is round, so is the earth!"

"You say so?" Zhang Xianxian disdains to say that it's a waste of time to talk to this guy.

You play the lute to the ox, can it understand? No, on the contrary, it will emit the sound of Mu Mu, which is the current situation.

"I know you don't believe it," Wang Kang said faintly, "then I'll give you an explanation!"

"I'd like to hear about it!" Zhang Xianxian disdains the way.

See what you can say.

Wang Kang asked, "has Miss Zhang ever seen a sailboat go to sea?"

"Of course I have. I went to the state of Lu for a boat trip," Zhang said with white eyes. "Why do you ask? You've never seen it

"Hillbilly!"

Wang Kang gave a dry cough, "did Miss Zhang ever notice that when a ship sails to the horizon, it will not become smaller and smaller until it is no longer visible,

" on the contrary, the ship seems to sink below the horizon first, and then the mast. "

"When ships return from the sea, the order is reversed: first the mast, then the hull, rising from the horizon...""You mean that?" Zhang Xianxian's face was unnatural. She was curious about this, so she observed it, but she didn't think about it.

"What does that mean?"

"The description is a surface, not flat."

"What is it?" Zhang Xianxian frowned and thought of it carefully. It seemed that it was so.

And Wang Kang said, "there is also the simplest way. If the ground is flat, you can see the same distance no matter how high the altitude is."

"Oh, altitude is the vertical distance of a place on the ground above sea level."

Zhang can't help thinking about what Wang Kang said.

"But in fact, it's very difficult for you to see. No matter how good your eyesight is, there will be a limit. That's because the curvature of the sphere itself limits our line of sight!"

"Unless you climb a tree, or climb a mountain, and look down from a high place, that's why you look up and down."

Seeing that Zhang Xianxian didn't speak, Wang Kang said with a smile, "I can't understand what I said, but you should be able to?"

"If I don't understand, when I say it in vain."

"Is that the only evidence?" Thinking for a moment, Zhang Xianxian asked.

"Of course, there are, but you can't understand that!"

"You..." Zhang Xianxian's face was unnatural, because he had never heard of the words Wang Kang had just introduced.

I don't know, but I don't know.

If you think about it carefully, it really makes some sense. Isn't it overturning her cognition?

Impossible, absolutely impossible!

She didn't insist on her own theory. There was nothing absolute in the world.

She didn't believe it. It was from Wang Kang.

"But what does that have to do with apple landing?"

Zhang Xianxian decided not to continue to pull this, otherwise he might be embarrassed.

Because she just barely keeps up with Wang Kang's idea.

"Of course it does!"

Wang Kang said with a smile: "you don't mean that if the ground is not square and static, then we won't stand firm."

"The reason for this is the universal gravitation, just like the apple landing, it is because the earth we live on has a gravitation on the apple, that is, the gravity of the earth!"

"It attracts the apple. When the apple matures, it will separate from the branch. The gravity of the earth will attract it to the ground, and the apple will fall on the ground!"

After that, Wang Kang looked at her and asked, "Miss Zhang, do you understand?"