Han Cheng's affirmation and praise made Shi Tou's face, which had turned red due to excitement, even redder.
At this moment, his heart was filled with joy, just like many years ago when the Son of God came to teach them how to write and speak Mandarin. He always did it quickly and well, and was therefore praised by the Son of God.
Those who were confused and seemed to have grasped something but could not grasp it completely, after listening to the words of the stone, and carefully recalling the scene when the Son of God held the fruit and slowly turned it, the things that they could not grasp before now suddenly became clear.
Yes, that is because the earth rotates from west to east, so the sun is seen first in the east.
As the earth continues to rotate, in their eyes, the sun is constantly moving westward. When the location of their tribe moves to a place where the sun can no longer reach, the sun disappears.
So this is why there are day and night!
It turns out that the sun rises in the east and sets in the west, not because the sun itself is moving, but because the earth on which we live is rotating!
Many people looked enlightened, as if a brand new door had opened before them.
At the same time, their vision was no longer limited to the small piece of land they already knew, but expanded to a very large area.
When they cast their eyes toward the sea of stars, learned these extremely amazing secrets, and understood what the earth they lived on was like, when they looked back at the place where they lived, they felt that it was not that big.
But at the same time, once you understand your own insignificance, you won’t feel arrogant and won’t be easily satisfied.
"Now can someone tell me why it is hottest at noon, but becomes colder at night?"
Han Cheng looked at everyone, paused for a moment, and continued to ask questions, allowing the people in the tribe to think for themselves.
"It's because there is sunlight at noon, but there is no sunlight at night."
This question was relatively simple. As soon as Han Cheng finished speaking, many people raised their hands.
Han Cheng asked one of them to stand up and answer.
"Very good! That's because the sun shines at noon but not at night. It's just like when we sit around a fire, the side that is warmed by the fire is warm, and the side that is not warmed will be cold."
Han Cheng nodded approvingly, then looked at the happy man and continued, "Then can you tell me why it is hot at noon, but cooler in the morning and evening? The morning and evening are the same as noon, because the sun is shining."
After this question was asked, the person answering the question was immediately stumped.
Yes, the sun shines on us in the morning and evening, so why is it the hottest at noon?
Not only her, but many people sitting in the big brick and tile house were stumped by the question Han Cheng asked and were trying hard to think about it.
"Son of God, I know!"
After a moment, Shitou raised his hand and looked at Han Cheng with some excitement.
Han Cheng asked the man to sit down and let Shitou speak.
“It’s because we are far from the sun in the morning and evening, and close to it at noon.
It’s just like sitting by a fire. If you are close to the fire, it will be hot. If you are far away, it won’t be as hot. ”
Shitou stood up and said this, and at the same time imitated Han Cheng and used the well-known example of roasting fire.
Han Cheng smiled again. Shi Tou was really talented in these areas and had quite the charm he had in his old age.
"Then, how do you know that we are closer to the sun at noon and farther away from the sun in the morning and evening?"
Someone asked the stone a question.
Seeing this, Han Cheng did not say anything, but smiled at the person who asked the question and Shi Tou, wanting to see how Shi Tou would answer.
"This is very simple. Not long ago, the Son of God used a rope and fruit to demonstrate to us that the distance between the sun and the edge of the earth is farther than the distance to the center. Using the same method, we can get these results."
Faced with such a question, Shitou didn't hesitate at all and just spoke out the solution.
When Han Cheng heard this, a smile appeared on his face again.
Shi Tou is a really smart guy. He actually thought of the experiment he did not long ago.
At that time, I wanted to explain to them why it gets hotter the further south you go, but I didn't expect that Shi Tou would apply it here.
The same method can indeed be used to explain and verify problems in this area.
After hearing what Shi Tou said, many people remembered the experiment that the Son of God had done in the rabbit circle before, and then connected it with the present, and found that it was indeed the case.
Seeing everyone's reactions, Shitou felt more at ease and felt a sense of joy as a top student bullying a poor student.
"Then why does the sun look so big in the morning and evening, but so small at noon? Isn't it that the closer it is, the bigger it looks, and the farther it is, the smaller it looks?"
Another person spoke up, confusion in his voice.
As soon as these words were spoken, those who had just thought that Shi Tou was right became confused.
The closer you are to the fire, the warmer it is. At noon, you are close to the sun, so it is hot. There is nothing wrong with this.
But because the distance is close, the sun should appear to be the biggest, but the reality is that the sun appears to be the smallest at noon.
Once these two things were connected together, it instantly became a headache. Even Shi Tou, who was full of confidence just now, was overwhelmed by this problem and his mind was full of confusion.
He felt that the sun was closer at noon, but he couldn't understand why the sun looked much smaller at noon than in the morning and evening.
For a moment, everyone in the Qingque tiled house was confused by this tricky question, and their minds were full of confusion.
Han Cheng didn't find it strange at all that everyone in the tribe was confused by this question, because it was an eternal problem.
When Confucius traveled east, he saw two children arguing about the sun. The sage Confucius was speechless by this tricky question and was even laughed at by the two children.
It is normal for people from my tribe to be confused when faced with this eternal problem.
When he was in school, he was also confused when he learned this text, and felt that what the two kids said made sense.
He was puzzled by this question until he entered high school and studied geography, when he finally figured it out.
"Son of God, are we closer to the sun in the morning or at noon?"
Shi Tou, who was confused and bewildered, finally couldn't help but ask Han Cheng.
Originally, he had full confidence in the results he had obtained, but now, he was shaken.
The others also looked at Han Cheng, wanting to get an accurate answer from their Son of God and solve this problem that was giving them a headache.
"Of course it is closer to the sun at noon and farther away from the sun in the morning and evening."
This question could stump Confucius, who was seriously unskilled in certain subjects, but it could not stump Han Cheng, a liberal arts student with good grades in geography.
After hearing Shitou's question, he gave an accurate answer very directly without any vague words.
In the past, after getting the accurate answer, many people in the tribe would not continue to ask questions, but this time it was different. They all wanted to know why it was like this.
Why does the sun look so big in the morning, but is actually far from the ground...
What you see is not necessarily the truth. In many cases, your eyes can deceive you and give you an illusion.
"This is because in the morning, the sun shines in at an angle and is refracted particularly clearly by the atmosphere surrounding the earth, magnifying the sun.
But at noon, the sun shines more directly, which does not magnify the sun, but shows its true appearance, so at noon, the sun looks smaller. "
Of course, no one in the tribe could understand what was said. Even Shi Tou, the most talented one, was confused.
Han Cheng thought about it, and asked someone to get a piece of ice from the basin outside. He carefully made it into a convex lens, and then placed it in front of one of his eyes.
So, everyone in the tribe was surprised to find that the Son of God's eye was much larger than the other eye.
When Han Cheng removed the ice from his eyes, the eye immediately returned to its normal size.
"In the morning, the atmosphere acts like an ice cube, magnifying the sun, but at noon when the sun is directly overhead, the atmosphere has no magnifying effect."
Han Cheng said as he changed a flat piece of ice and placed it in front of one of his eyes. His eye looked about the same size as before.
This magical scene made everyone marvel at it, but at the same time, through this analogy experiment, many people in the tribe understood what was going on.
After Han Cheng saw that many people understood, he gave the ice cubes in his hand to the people sitting in the front and asked them to play with them.
"Son of God, the earth we live on is a big sphere, and it keeps spinning. Why wasn't that person thrown out?"
在众人纷纷为冰块能够放大东西而好奇不已的时候，一直没有怎么说话的巫这会儿终于开口询问了一个问题。
这个问题他纠结了好一阵儿了，也没有想出一个所以然来，这时候见众人不在问问题，神子也没有再讲述，想了想之后，便站起身将之说了出来。
巫的声音响起之后，青砖大瓦房之内，一下子就安静了不少，等到弄明白了巫问出的问题之后，青砖大瓦房之内，变得更加安静了。
如果不是巫提出来，他们还真没有意识到这个问题。
如今巫这样一说，他们再顺着巫的思路一想，顿时就跟巫一样，陷入到了同样的迷茫与疑惑之中。
韩成见此，吸了吸鼻子，幸好自己是个穿越者，不然还真的被你们给问住了。
他看着众人，清了清嗓子，准备开始站在站在巨人的肩膀之上，来抢牛顿先生的苹果了。
“这是因为我们居住的地球有着一种吸引力，能够把我们都给吸住，不仅仅是我们，在大地上的任何东西都会被吸引着。
正是因为有着这种看不见，摸不着的吸引力的存在，我们才不会在地球的转动里被甩飞。”
和韩成想的一样，他将万有引力抛出来之后，部落里的众人一个个都是不在说话了，眼中或是惊奇，或是迷惑，或是思索……
“可、神子，鸟就能在天上飞，我也能蹦起来。”
这样的氛围持续了好一阵儿之后，有人终于忍不住的开口。
“但是鸟也不能一直都在天上飞啊，它总有落在地上或者是树上的时候，你蹦起的也只能离开地面一小会儿，马上就会重新落到地面上。
要是大地没有吸引力的话，你蹦起来之后，不应该是不往下落，而是在空中飘，或者是一直往天上去的吗？”
韩成笑着反问。
这样的反问出口之后，众人顿时就是一滞。
是啊，为啥啥东西都要往地上落呢？就算是飞的最远的鸟，也飞累了也要落到地上。
被风吹到天上的树叶，被自己等人抛起来的石子，到了最后都会落到地上。
要是没有神子说的那个万有引力，这些东西应该都会飞往别的地方吧？
要是没有神子说的那种，自己等人都已经习以为常的万有引力，自己等人也不能在这个转动的大圆球上生活吧？
韩成看着众人的反应，嘴角溢出笑容，看来自己这次抢牛顿先生的苹果抢夺的还是很成功的。
想想也是，许多东西都是最初的发明创造、或者是发现的时候最为困难，可一旦有人将这层窗户纸给捅破，将之弄出来的之后，后来者再去看，就会觉得也不难。
就比如韩成今天韩成跟部落里的众人讲述包括万有引力在内的自然知识，在结合着现实的实际情况进行进行讲述时，想要将之理解也不是多么的困难。
如果困难的话，这些知识也就不会被放在高中教授，向众人普及了。
而他，作为一个资质平庸的众生中的一员，也不可能将这些都给理解，并且牢牢的记住。
今天的讲述就到此为止，当众人从青砖大瓦房的里面出来的时候，看着外面熟悉的场景，都觉得有些不太一样了。
似乎整个人一下子就明白了许多的东西，对于世界有了不一样的看法与认知。
夜幕降临，青雀部落和其余地方一样，也都被夜色所笼罩。
躺在温暖的火炕之上，石头将身边的窗户掀开了一角。
通过这一角空隙，他能够看到夜空中的两颗明亮的星。
而此时，石头眼睛也如同夜空的那两颗星一样的明亮。
回想着今日神子说讲述的那些东西，石头心潮起伏的厉害。
在此之前，他根本没有想过，这些自己等人早已经习以为常的东西，背后居然隐藏着这么多的东西。
许许多多看起来普普通通的事情，都是有其所产生的原因的。
今天，随着神子的讲诉，他发现了一个不一样的世界，脑海之中仿佛有一扇门就那样被打开了一般。
或许，等到自己对这个世界了解的足够多了之后，自己就能够飞到天上去！
也不知道在这里躺了多久，石头将兽皮窗帘的那一角放下，躺在**的他，想着这些事情，忍不住握紧了拳头。
躺在炕上的韩成，想着今天发生的事情，心里同样不怎么平静。
作为一个穿越者，最为宝贵的其实就自己所知道的，那些远超这个时代的知识。
尤其是他这种直接穿越到史前的。
穿越到史前，许多方面都不方便，但从另外一个角度来看，其实也不是没有一点好处没有。
至少你可以按照自己想法去对部落进行建设，不会有人对你指手画脚的进行羁绊。
更不会有以正统自居的人，跳出来义正言辞的对你进行口诛笔伐，说你离经叛道，说你只会奇巧**技，不懂先王之道。
在这里，想要做事情的时候，便可是直接去做，而不需要跟各种人进行扯皮，最终将自己想要弄的东西，怼的面目全非，甚至于是直接胎死腹中。
作为一个后来人，韩成自然知道他所掌握的这些皮毛，对于自己部落，或者说是对于整个时代，是多么的重要。
所以他想要将这些东西，尽可能给的给流传下去。
有了他的这些皮毛，部落将会少走许许多多的弯路，能够开一个非常好的头。
部落发展到后来，踩在他这个前者的肩膀之上，也好多涌现出来一些优秀的人才。
他所学到的这些皮毛里面，自然科学知识可以说是至关重要。
科学是第一发展力这句话真的非常正确。
而自然科学知识，或者说是基础科学理论，又整个科学发展中至关重要的一环。
万有引力的出现之后，引发出了各种新兴的东西，极大的促进了科学的发展。
当其有了瓶颈，受到了束缚之后，狭义相对论和广义相似度论横空出世，在它基础之上，又是新一轮的爆发式的增长，雨后春笋一般。
或许自己以后，要多给部落里的人讲述一些这方面的知识，把自己所知道的这些皮毛，慢慢的讲述给部落里有这方面天赋的人听。
至于一些太过于高深的、自己也是一知半解的东西，则可以先记录下来，说不定等到后来，部落发展到那一步了，后世子孙有人看到这些之后，就能恍然大悟，解开他心中的谜团，从而促进整个部落的大发展。
韩成躺在炕上这样想着，越想越觉得自己的想法非常的靠谱。
枪杆子会腐烂，钱袋子会换主人，唯一不会变的，就是真理，特别是关于科学这方面的真理。
毕竟物质是不以物质而转移的。
当然，韩成也知道，按照部落目前的情况，想要将这些都给迅速的发展起来是不现实的，他这些想法想要实现，简直比将油菜彻底的培育成大白菜都要更加的有生之年系列。
但只要这样做了，就总归是有了一份希望。
今日埋下一颗种子，未必就不能长成参天大树，结出丰盛的果实。
未来的事情，谁又说的准呢？
躺在炕上，思绪胡乱的飘飞，很久很久之后，韩成才算是彻底的睡着。
在接下来的日子里，天气时晴时阴，有两天甚至于还飘落下来了一些细碎的雪花。
其中有两天，温度也有所上升，但是上升的不多，而且没有维持几天，便又再度降下。
那些之前还不怎么枯黄的叶子，在这样的气候之下，迅速的完成了走向枯黄的转变，在寒风的呼啸之下，纷纷扬扬的洒落，人踩在上面，发出清脆的焦响。
青雀十一年的秋天是真的一去不复返了，被强势的冬天强势的挤走。
在这样的天气里，青雀部落的许多活动也没有停止。
比如烧炭、往部落周围的土地里运送粪肥、大雪没有降下之前，继续翻地等等这些。
而韩成，抽空给部落里感兴趣的，讲述了更多关于地理方面的知识。
依然采用提出问题，然后再进行解答的方式。
比如为什么会有春夏秋冬四季，再将这个问题抛出之后，就开始给众人慢慢的讲诉地球的公转，近日点，远日点，以及回归线这些东西。
这些东西好多人理解起来都比较困难，但是架不住韩成的时间多，耐心足够，想方设法的去一遍遍的讲，一点点的讲，翻来覆去的讲。
当初部落里里的人从无到有的接受全新的普通话，以及汉字这些东西，都架不住韩成这种连番的攻势，一个个硬生生的被韩成给磨练的会说普通话，会写会认一些汉字。
如今这样的精神再次拿出来之后，不少人陆续的就明白是怎么回事了。
就算是一些没有明白的人，在韩成这这样连番的攻势之下，也将他所讲述的这些东西，给牢牢的记在了心里。
After you have memorized these things in your heart, in the years to come, sometimes you will suddenly understand some of them without realizing it.
As for how to apply knowledge flexibly, according to Han Cheng's own experience, one must first work hard, with a spirit similar to rote memorization, to absorb these things, and then apply them flexibly on the basis of remembering them firmly.
Otherwise, if you don’t even know some basic fundamentals, how can you apply what you have learned?
Of course, this only applies to people with ordinary qualifications. For people like Shi Tou, who understand things very quickly and can sometimes draw inferences from one example to another, such a thing simply does not exist.
However, Han Cheng could only sniffle at those people he met in school in his later lives who were obviously ordinary people in terms of qualifications, but were very particular about applying what they had learned, and who looked down on those who only knew how to memorize things by rote, and who later became a mess.
The bigger the turtle, the bigger the nest it builds. Stupid people use stupid methods. Han Cheng thinks this makes sense.
It is important for people to know themselves and not underestimate themselves, but they also cannot be arrogant. Knowing oneself and having the courage to admit it is very important sometimes. After all, there are too few geniuses in this world, and most of them are just people with similar qualifications.
Well, this is a bowl of poisonous chicken soup from primitive times...