I am a primitive

Wu, senior brother, and Lie, who were frightened by the terrible scene Han Cheng described, nodded their heads when they heard the words, and felt that what Shen Zi said was very correct.

Seeing this, Han Cheng felt very relieved. After all, it was just today that he thought of these things, and once again received the admiration of everyone in the tribe, pretending to be silent.

Just when Han Cheng was about to settle the matter, Wu seemed very puzzled and asked a very profound question...

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"Son of God, why does it get warmer when you go south?"

Wu looked at Han Cheng and asked aloud, his eyes were full of puzzlement.

Wu Ke has kept this doubt for a long time, but seeing that the son of God has been talking happily there, he didn't say anything, and waited for now.

After Wu Wen said such words, the elder brother and the others were also taken aback for a moment, and immediately came to their senses.

Yeah, why does it get warmer when you go south?

Shouldn't the south side be about the same as here in our own tribe?

Especially Mao, he was even more puzzled by this. He took the people of the trade team, but he often went south.

Moreover, the original Huangguo tribe was in the south of the tribe, but in the spring of that year, I, Shang and others, with the people from the Huangguo tribe, almost couldn't come back.

It's not warm at all over there.

After hearing Wu's question, Han Cheng couldn't help but froze.

As a person living in the northern hemisphere, the warmer you go to the south, isn't it common sense?

In later generations, children will know things.

After being so dazed, Han Cheng laughed.

Subconsciously, I look at things according to the deep-rooted thinking of later generations.

However, this kind of thing may be able to make some people speechless. They know that this is a common-sense question, but they just can't tell why.

For Han Cheng, who was born in a serious liberal arts class, there was no problem.

After all, back then, among the three sub-subjects of liberal arts, geography was the best he studied.

What longitude, latitude, morning and evening line, perihelion, aphelion, tropic, heat rise, cold fall... these are simply not too random.

Han Cheng whispered softly and shook his neck, thinking it was time to start his own performance.

"The south is hotter than here because the south is closer to the sun.

The sun is a big ball of fire, just like we warm up a fire, if you are far away from the fire, you will be cold, but if you are close to the fire, you will become warm..."

"Then why is the south side closer to the sun?"

The stone who didn't know when came over, blinked his eyes and asked aloud, took over from the witch, and turned into a hundred thousand whys.

When he was not an adult, he was coaxed and fooled by Han Chenglian to produce the stone of the flying dream. He was very interested in this aspect.

Hearing what Han Cheng said now, he was immediately attracted.

"This is because the earth we live in is a sphere, and the south is the middle of the sphere, which protrudes a lot, so going up there is closer to the sun."

After saying this, seeing Wu and the others didn't quite understand, they thought for a while and found a relatively large, round fruit and put it on the ground, inserted a small stick not far away, and found a thin one. The rope was tied to the wooden stick, and then Kai pulled the rope with his hands and began to measure the round fruit.

The first thing to measure is the middlemost position of the fruit. After the measurement, make the next mark on the rope.

Then compare the top of the fruit.

Everyone was surprised to find that a rope of the same length could touch the middle of the fruit, but not the top of the fruit. To reach the top of the fruit, a longer rope was needed.

"For example, the place where the stick is inserted is the sun, and this fruit is the earth we live in. Is it the middle part of the fruit, the closest to the sun?"

At this time, Han Cheng had completely transformed into a high school geography teacher, but when his geography teacher was teaching this, he didn't use the fruit, but the back of the head of the guy with the short cut in the front row.

Although the tools are simple, or make do with them, the effect is still relatively good. Under such an intuitive observation, the people in the tribe, like Han Cheng at the beginning, immediately understood the distance between the middle of the ball and the place similar to the equator. The closest truth to the sun.

"As for you who have been to the south, you feel that the south is the same as where we live, and it is not warmer than our tribe. That's because you haven't gone south enough, and it's too close to our tribe.

Walk a little farther to the south, and it will get warmer.

You can ask the old primitive people about this, they once lived in the north because of the persecution of the Tengshe tribe, and then they were frozen back by the cold over there..."

Han Cheng continued to explain, and cited the Feng tribe and Linfeng tribe that had migrated to the north and returned after being frozen.

This problem is understood, but a new problem has emerged.

"Son of God, this... How is this place a ball? Isn't it flat?"

It was still the stone that opened the mouth.

After saying this, the rest of the people looked at their son of God in confusion or surprise.

For them, this is even more incomprehensible than the fact that the south is warmer than the north.

You know, they have been living on the earth since they were born.

On this ground, there are mountains, ravines, rivers, and flat lands... How could it be round?

Fortunately, what Han Cheng is facing at this time is these primitive people who are ignorant and whose field of thought is like a blank sheet of paper. If he is facing those extremely stubborn and self-righteous cynics, he will definitely be sprayed into a sieve !

In an era when there is no full picture of the earth, it is very difficult for this person in the tribe to accept the view that the land under his feet is round, because it is so different from what everyone usually sees .

However, such things are not difficult for Han Cheng, who made him a person with a liberal arts background.

Moreover, I was influenced by the geography teacher at that time, especially the kind who would draw materials from anywhere and explain the model.

Seeing everyone's doubts, Han Cheng did not speak in a hurry, but calmly found a model of the earth.

That's right, it's the fruit just now.

"Look carefully at the surface of this fruit."

Han Cheng held the fruit in his hand and showed it to everyone in the tribe.

People in the tribe of this fruit are familiar, every one of them has eaten it before, and there is nothing to look at.

But despite this, everyone still observed carefully according to Han Cheng's request.

"Did you find anything?"