Who can elaborate on the allusion of "the sky is round and the place is round"?

"Zhou Kuai Su 'an Sutra" says: "The square belongs to the sky, and the sky is round." The view of heaven and earth and place is one of the basic contents of China traditional culture, which has always been respected by the refined and popular culture. Before modern science was introduced into China, it was generally believed that this statement meant that the shape of the sky was round and the shape of the earth was square. After modern science was introduced into China, people realized that the shape of the earth was definitely not square, and it was a common sense mistake to say that the earth was square. Therefore, some opponents of China's ancient traditional culture, based on this, prove that China's ancient traditional culture is ignorant and backward. Moderates think that the square of the earth (or even the solution of most people is flat) will forgive the ancients because of the small range of activities of the ancients, and fanatics have to deliberately avoid this statement. If they can't avoid it, they have to speak ominously and confuse you.

So, "the sky is round" really means that the shape of the sky is round and the shape of the earth is square? Of course not. Our ancestors were very clever and wise, not as stupid as the corrupt Confucian masters after Qin and Han Dynasties. While our ancestors talked about the classic saying that "the sky is round and the earth is round", there are also many records that the shape of the earth is spherical. Our ancestors know that the shape of the earth is round, and "the sky is round" does not mean the shape of heaven and earth. What is the meaning of "the sky is round"? In this regard, Ceng Zi has made it clear that the Tao of heaven is round and the Tao of earth is square. Then, what is the Tao of the "Tao" of heaven and earth? Isn't that what the old monk and the masters of Chinese studies and Yi-ology always said, but it can't be said that Ming Dow didn't say it for nothing, but he could only understand the mysterious "Tao" that can't be described in words? If that's the case, didn't you, Gu Hong, just save the concept of "a place where the sky is round" from the misunderstanding of the ages, but sent it to the mysterious kingdom, or didn't know us, and didn't waste the time of us and other unlucky vulgar people?

Of course, Gu Hong is not that kind of person. Gu Hong wrote all about common sense, and explained profound things with common sense. My characteristic is to find and discover things that most people in the field of science and culture don't understand, but some people think they do, but they don't, so people who can't say for sure think it's profound, and then explain it with human common sense knowledge. Because it's a common sense explanation, people with junior high school education or above can understand it. And my common-sense explanations of esotericism in the past, even if the theoretical authorities in the field of esotericism read them, have to be recognized, and there is nothing wrong with them. They admit that my common sense explanation is more original, more correct, more profound and more authoritative than their original abstruse explanation (of course, these are their ideas, and they don't have to say them in their mouths). My culture is not high. 198/kloc-0 graduated from high school in. At that time, after the Cultural Revolution, I didn't learn much. I have been in the society for more than 20 years, and I am ignorant and ignorant. I have not read a few books, and everything I learned in the school system is almost forgotten. I also take one day at a time. I don't like Zen, and I don't like divination. How can I write something profound?

Cut the crap and get to the point. The original meaning of "heaven" mentioned by the ancients is the role of the sun, the moon and the stars, mainly referring to the role of the sun. The function of the sun is how much energy (heat) is released. The energy released by the sun is the characteristic of Heaven, that is, the solid sphere is evenly released outward with the sun as the center. If we imagine, if we can feel it on a sphere with the sun as the center, we will definitely feel that the temperature at every point on this sphere is uniform and equal. The farther away from the center of the sun, the lower the temperature on the sphere, and the higher the temperature on the sphere closer to it, as shown in figure 1 (to explain, I didn't learn solid geometry well, I couldn't draw a solid diagram, and I couldn't imagine how to draw a solid diagram, so I had to draw a plane diagram, which was more intuitive and didn't affect my understanding), and the temperature at each point of each circle was the same. If someone asks you what the shape of heaven is now, you will definitely answer: of course, heaven is round.

Maybe you will ask, is heaven that simple? Yes, the original meaning of heaven is as simple as that! But if our ancestors couldn't further extend the meaning of heaven, wouldn't they be worse than physicists now? How can you think of authenticity? Can we still be proud of the wisdom of our ancestors? Ha ha.

Let's first recall how modern physics understands the motion of circles and circles. In physics, the formation of circular motion is attributed to the conservation of kinetic energy and potential energy. The kinetic energy of a particle in circular motion is equal to the potential energy formed by the centripetal force acting on the particle. The connecting line CO between the moving particle and the center of the circle represents the centripetal force of potential energy, and the direction points to the center of the circle. The tangent AB passing through the moving particle and perpendicular to CO indicates the motion of the particle causing kinetic energy, and the direction points to the direction of the particle motion, as shown in figure 1. Of course, our ancestors thought that the function of heaven releasing energy in the form of sphere was formed by the conservation of quantities represented by CO and AB in figure 1. Of course, they will imagine that if point C happens to intersect with the spherical surface of the earth, then the nature represented by AB in heaven will have an effect on the earth, while the nature represented by CO can be ignored for the time being and has no effect on the earth. As for how to describe the nature and function of CO and AB in heaven with words, and explore and explain the great thought of heaven of our ancestors, I think this task should be given to learned scholars and immortal masters. Don't bother me, a fool who thinks he is almost illiterate and infinitely close to subject blindness. What did you say?/Sorry?

The nature of the celestial circle is easy to understand, but the nature of the authentic square is generally unnoticed. The definition of the tunnel nature in the Book of Changes is to honestly and obediently accept the role of the nature represented by AB in Tiandao 1 map relative to the "smoothness" of Tiandao, and not to react in the same size and opposite direction, so that the couple will never fight together, hehe.

So, how did the earth accept the nature of the sky and become true? As shown in Figure 2, the red circle represents a certain circle in the sky and the black circle represents a certain circle on the surface of the earth. These two circles intersect at two points AB, that is, the earth surface represented by the black circle is at two points A and B, and at the same time, it accepts the role of the sky represented by the red circle on its own. The action of heaven on ground point A AF is equal to the action of ground point B BF..A By imitating the method of force decomposition in physics, point A will naturally decompose the action of AF on itself into two parts: AD passing through the center of the earth and AE passing through point A and tangent to a circle on the earth's surface represented by the black circle, while point B will naturally decompose the action of BF on itself into BD passing through the center of the earth and tangent to a circle on the earth's surface represented by the black circle. When a circle on the earth's surface represented by the black circle receives the action of the sky represented by the red circle, four straight lines, AD, BD, AE and BE, naturally form a quadrilateral like AEBD, in which the angle DAE and the angle d BE are definitely right angles. In the abstract ideal state, AD and BD must be equal, AE and BE must be equal, and the angle AEB and the angle ADB may also be right angles, but in most cases they are not right angles. Now let's look at the quadrilateral AEBD. Although it may not be a complete square, it is no problem to say that it is a square. If we understand the heaven represented by the red circle and the tunnel represented by the black circle in Figure 2 in a three-dimensional way, then if the black tunnel accepts the role of the red heaven, it will certainly form a square body that is not necessarily square. The so-called tunnel means that the earth has accepted the role of heaven. Through the previous analysis, we can know that the earth's acceptance of heaven is a square or not. So, if someone asks you what the shape of the tunnel is now, I believe you will shout it out bravely and confidently, instead of hiding and whispering like today's cultural masters and Yi-ology masters. You will shout with passion: Long live the great, glorious and correct ancestors! Sailing in the sea depends on the helmsman, learning culture, engaging in scientific research, and participating in meditation depends on first understanding Gu Hong's common sense and absolutely correct interpretation of abstruse theories!

In ancient classics, the common heaven is not only the function of the sun, but the interaction between the sun and the moon (sometimes the lunar moon), but this paper tries to be more popular. According to modern people's habits, we can also omit the part of embracing Yin and Yang, and directly talk about the function of the sun, which will be easier to understand.

The theory of heaven and earth is an important foundation of our national culture. If we introduce it and extend it, we will learn from it and learn from it, and the world will achieve everything. How to extend the theory of heaven and earth, I will continue to talk about it when I talk about Taiji diagram.

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China's traditional culture has both opponents and supporters. At first glance, China's traditional culture should be opposed and abandoned, because China's traditional culture should be based on some common-sense mistakes, such as: the sky is round, the earth is round, that is, the sky is round and the earth is square, which is highly praised by hundreds of ancient China schools. Whether the sky is round or not, the earth can now be said to be not square, and it is a common sense mistake to say that the earth is square. Can cultural knowledge based on these common-sense mistakes be said to be excellent? Of course, it should be opposed and abandoned. However, if you understand the concept of "a round place" in this way, you can say that you have made another common-sense mistake, although most cultural and academic authorities and scholars in China understood and explained this concept in this way before modern science was introduced to China. After the introduction of modern science into China, China's cultural masters and Yi-ology masters have realized that this understanding of the concept of "the heaven is round and the place is round" is wrong, but how can we understand it without this understanding? These masters can't find a convincing explanation for this concept, so they have to deliberately avoid it, be vague and mysterious. Most of the most basic concepts that constitute the ancient traditional culture of China, such as Taiji, Five Elements, Eight Diagrams, River Map, Luoshu, Meridian and so on. It is highly praised by a hundred schools of thought and cultural people of past dynasties. However, if interpreted according to the popular authoritative answers and standards, it can be said that most people feel that they are making common-sense mistakes, and they are irrational and inexplicable, so they have to think that you are superstitious and mysterious. However, according to their common-sense misunderstanding, China's literati can be practical in practice. According to this understanding, divination is also correct. According to this understanding, monasticism and meditation can strengthen the body, and Chinese medicine can cure diseases according to this understanding ... this is really puzzling! In fact, this phenomenon is not difficult to understand. Just like a moving car, ten people can't stop it with all their strength, but a lout driver who hasn't studied physics gently steps on the brakes in the cab and the car stops. You can admit that the driver can stop the moving car by braking, but don't believe the driver's physical theory. His knowledge of physics is far behind Newton, who has never seen a car. Don't believe that the driver has advanced qigong skills as soon as he enters the cab. As a matter of fact, most intellectuals in China's academic circles now understand the ancient culture of China, just as a lout driver understands the principles of automobile physics. No matter how tall and skilled the lout driver is, it may be wrong to tell his disciples that the physical principles of cars are practical in nature. No matter how knowledgeable the academic masters in China are, they can also know China's ancient culture by heart. Because their understanding of ancient culture is just like a stupid driver's understanding of the principles of automobile physics, it is not surprising that there are many conceptual and fundamental mistakes in their tireless interpretation of ancient culture.