Seeing that Zhang Xianxian was a little confused, Wang Kang smiled and said, "Then let me put it another way, what do you think the shape of the world we are in? What is the sky and the earth?"

Now Zhang Xianxian understood and said directly: "If you use this to test me, it would be ridiculous."

"The sky is round," Zhang Xianxian said calmly.

hehe……

Wang Kang looked like I knew you would say that.

Is this expression again? Zhang Xianxian almost bit her silver teeth, and she felt that Wang Kang was quite disdainful, which hurt her heart.

Never been so frustrated.

Zhang Xianxian gritted her teeth and said, "What? Could it be that Young Master Kang has other ideas?"

Wang Kang asked, "Then I ask you, is your theory of the world full of heaven and earth based on it?"

"Of course I said it has a basis. Everyone is like you, saying something inexplicable?"

Zhang Xianxian said coldly: "We call the sky what we see when we look up, and the fields that depend on them are called the earth."

"Through observation, we can find that celestial bodies such as the sun and the moon are moving continuously and endlessly, like a closed circle without beginning or end,"

"And the earth quietly carries us, just like a square object standing still and stably!"

"This is the perfect place!"

Afraid that Wang Kang would refute, Zhang Xianxian added: "If this is not the case, it will be as spherical as the sun and the moon. Do you think we will stand firm?"

"Will the other side fall down?"

After saying that, Zhang Xianxian seemed to be looking at Wang Kang as if she was demonstrating. Ordinary people would not study this theory at all, and only she could say it so clearly and thoroughly!

It is reasonable and well-founded!

As soon as he heard that Lin Yuyan and Li Qingman nodded in agreement, this explanation was indeed reasonable.

But they were wondering why this sudden change in style became an academic discussion?

It's still such a disparate discussion.

"Haha!" Wang Kang laughed after hearing this.

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

"I laugh at you for being ignorant!"

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

This is the first time she heard this from others that she is Zhang Xianxian, who knows astronomy and geography.

Why does she look down on others? Because she thinks that others are ignorant and some phenomena cannot be explained, it involves the theory of ghosts and gods.

And Wang Kang was the biggest insult to her.

Wang Kang seemed not to see Zhang Xianxian's anger, and said with a faint smile: "It is said that Xuan Pinghou's daughter is a daughter, but she has a talented talent in the prime minister!"

"It is well-versed in ancient and modern times, astronomy, and geography. Now it seems that knowledge is not ordinary."

"Isn't this ignorance?"

Zhang Xianxian snorted coldly, sat down again, and returned to calmness. She felt that she didn't need to be serious with a prodigal son.

What does he know?

In addition to the rogue label, a arrogant maniac should be added now.

"I think you can't explain it and can't justify it. This is the sophistry."

Zhang Xianxian said coldly: "I probably understand your intention, but I just saw me and wanted to suppress me on this road, but I can tell you that you not only chose the wrong person, but also the wrong door!"

"We first mentioned why the apple landed. What kind of gravity do you think is? A word I have never heard of before!"

"And then this question was raised. I explained it to you, but you didn't recognize it. I think you are just messing around and can't recognize yourself!"

Zhang Xianxian said without hesitation.

"It's wrong to have a round sky and place, but you don't know it yet!"

Wang Kang faced Zhang Xianxian's gaze and said, "We are like the sun and the moon, all of which are spheres!"

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

"You said yes?" Zhang Xianxian said disdainfully. She felt that talking about this guy was a waste of time.

Can you understand the cow playing the piano? No, but it will make Mou Mou's cry. This is the current situation.

"I know you don't believe it," Wang Kang said lightly: "Then I will give you an explanation!"

"I would like to hear it carefully!" Zhang Xianxian said disdainfully.

It depends on what kind of flowers you can say.

Wang Kang asked: "Have Miss Zhang ever seen sailing boats go out to sea?"

"Of course I've seen it. I've been on a boat trip to Lu," Zhang Xianxian rolled his eyes and said, "What did you ask about this? You haven't seen it before."

"Rumber!"

Wang Kang coughed dryly, "Have Miss Zhang ever noticed that when a boat sailed to the horizon, it would not become smaller and smaller until it was no longer visible,

"Instead, the hull appears to sink below the horizon first, and then the mast."

"When ships return from the sea, in the opposite order: first the mast, then the hull, rising from the horizon..."

"What are you talking about?" Zhang Xianxian's face was unnatural. She was curious about these things, so she had observed them, but she didn't think about them carefully.

"What can this mean?"

"It means it is a curved surface, not a straight one."

"This?" Zhang Xianxian frowned slightly. When she thought about it carefully, it seemed that it was indeed the case.

Wang Kang said again: "There is another simplest way. Assuming that the ground is flat, you can see the same distance no matter how high the altitude."

"Oh, altitude refers to the vertical distance from a certain location on the ground above sea level."

Zhang Xianxian couldn't help but think as Wang Kang said.

"But in fact, it's hard for you to see. No matter how good your vision is, there will be a limit. This is because the curvature of the spherical surface limits our vision!"

"Unless you climb up a tree, or climb up a mountain, and look down from a high place, this is also the origin of climbing and looking far away."

Seeing that Zhang Xianxian didn't say anything, Wang Kang smiled and said, "Others can't understand what I said for a while, but you should be able to do it?"

"If I can't understand, I'll say it in vain."

"Is these two points the only evidence?" Zhang Xianxian asked after pondering for a moment.

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

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

Although I don't understand, I don't understand it.

If you think about it carefully, it makes some sense. Isn’t this overturning her perception?

Impossible, absolutely impossible!

She is not just firm in her own doctrine, there is nothing absolute in the world.

She didn't believe it, and this was said from Wang Kang.

"But what does this have to do with the landing of Apple?"

Zhang Xianxian decided not to continue talking about this, otherwise she might be embarrassed.

Because she barely kept up with Wang Kang's ideas.

"Of course it's related!"

Wang Kang smiled and said, "You didn't say that if the ground was not standing still, then we wouldn't stand firm."

"The reason for this is gravity, just like an apple falling to the ground, because the earth we live in has a gravity on the apple, that is, the gravity of the earth!"

"It attracts apples. When the apple matures, it will break away from the branches. The gravity of the earth attracts it to the ground, and the apples fall to the ground!"

After saying that, Wang Kang looked at her and asked, "Does Miss Zhang understand?"

[Author’s off-topic]: Second update, everyone voted, thank you!
Chapter completed!