Ji Chu said anxiously: "Don't tell you fool, what do boys care about us girls!" Master, why did you accept such a villain and be an apprentice, it stands to reason that he Xiao Tianshu has to call me aunt! Hmph, no, Master, you have to vent your anger for me......"

Lu Dongbin said with a smile: "Hahaha, don't be in a hurry, wait for the teacher to give him a reason, yin, the ancient work "Yu", or add the "Fu" that represents the virtual entity as "Yin"; Yang, the ancient work "昜", or add the "阜" that represents the virtual entity as "yang". From now on, the word "侌" means "the mist that is rotating and reuniting". "昜" means "divergent gas". It can be seen that the ancients defined "yin and yang" from the two perspectives of the essence of the material world, "gas" and the "movement" of gas. The ancients did not call it "yang yin" but "yin and yang", which is related to the logic of the origin of the world of the ancients. The order of its world creation is: Wuji gives birth to Taiji→ Taiji gives birth to Liangyi (Liangyi is heaven and earth) .......

He also said: "Wuji" means "chaos", and "chaos" means scattered and floating water vapor. "Tai Chi" is the center of the circle, and the appearance of the center of the circle is at the same time as the occurrence of circular motion. The main body of circular motion is diffuse water vapor. After the scattered water vapor slowly rotates, it gradually forms into a hollow cloud and mist column, and the further acceleration of the rotation of the cloud and mist column produces centrifugal force at the upper and lower ends, and the centrifugal force makes the light material in the cloud and mist rise to form the "sky", and the turbid heavy material descends to form the "earth". "Heaven" and "Earth" make up the "world". From this creation process, it can be seen that the predecessor of the world was "chaos", and the world was born from the "rotation of clouds, fog and water vapor", that is, the "orderly movement of chaos", and only with heaven and earth can there be yin and yang (without the world, it is equivalent to returning to the previous state of the world - "chaos"). So "yin" before "yang". ”

Xiao Tianshu said: "Hehe, Xuan Chu, look at this, yin, "Shuowen Jiezi" said: "Dark, the south of the water, the north of the mountain", "The biography of the Wen Department" said: "The north of the mountain and the south of the water, the sun is beyond reach". Case: This is a macro perspective of heaven and earth, yin and yang. Heaven and earth are the largest yin-yang entities known to ancient humans. From the perspective of the largest yin and yang entities, the nature of yin and yang is discussed, and the meaning of the big yin and yang encompasses all the small yin and yang, which is also a clever move. However, it is not clear why yin is before yang, and it is fixedly called "yin and yang", not "yang and yin". Could it be that there was earth first and then there was heaven? It doesn't make sense. Only from the perspective of the origin of heaven and earth can we explain why yin is before yang. ”

He also said: "Yang, "Shuo Wen Jie Zi" said: "Gao Ming also." "Saying the Text Interprets the Meaning of the Word": "Gao Ming is also, and Yin Yan is also." "Case: The highest, the heavens; The bright, the sun. This is still from the macro perspective of heaven and earth, yin and yang. ”

Xuan Chu said: "Hmph, who looks at you, what do you like, I only know that the Tao Te Ching says: "Tao gives birth to one, life to two, two to three, and three to all things." All things are negative yin and embrace yang, and they are impulsive and think they are harmonious". Case: This is talking about yin and yang from the perspective of the origin of the universe, but it is not a definition or explanation of the word "yin and yang" itself. The Taoist, the guide. Guide, Xiang also. When chaotic water vapor shifts from disorderly motion to orderly motion, it is equivalent to the vehicle is on the right path and begins to move towards its destination. This orderly movement on the right path led to the birth of Tai Chi. Tai Chi is "one", which was born at the moment when chaos shifted from disorderly movement to orderly movement. As soon as Tai Chi was born, it was followed by the emergence of heaven and earth. Heaven and earth are "two". The weather falls, the earth vapors, and the two qi merge, and the result is the birth of man. People are "three". "Three" also includes all living beings, and human beings are the most spiritual of all living beings and are their general representatives. Subsequently, all things in the world alternate from generation to generation in the interaction of yin and yang, maintaining the balance of population and quantity. ”

Lu Dongbin said with a smile: "Yin and Yang are dependent on each otherYin and Yang is an abstraction of the ancients about the two opposite and mutually beneficial properties of all things in the universe, and it is also the philosophical category of the unity of opposites and the laws of thinking in the universe. Chinese sages and philosophers came up with the word "yin and yang" to represent the unity of opposites and opposites of all things, that is, the so-called "all things negative yin and embrace yang" in "Lao Tzu", and the so-called "one yin and one yang" in "Yi Chuan". The Book of Changes is about the mathematical and philosophical theory of the change of "yin and yang". ”

He also said: "Yin and Yang represent the most basic opposites of all things, Yin is cold, dark, gathering, materialization, Yang is heat, light, transformation, vaporization Yin has yang, Yang has yin, impulse is harmony (like invisible qi separating yin and yang, making them occupy their respective places.) The position of yin and yang is constantly changing, and the cycle repeats. The things we can see are yin and yang (this is the positive matter that converges to generate yang), and vice versa is antimatter (similar to a black hole), and all things must conform to the law and structure of yin and yang, just like people are born (is aggregation) and then die (dissipate), this is the law of yin and yang, and if the yin and yang in the human body are out of balance or the position of yin and yang is not right, people will get sick. ”

Chu Chu smiled: "There is yin in yin, and there is yin in yang, how about Xiao Tianshu, won't you?" Hahaha, didn't reach this level, did you? Look what else you have to say, huh! The surname is Xiao, what else do you have to say, hahaha......"

Xiao Tianshu was not as knowledgeable as Xuan Chu, and said with a smile: "These are the true meanings of yin and yang, and they are also the fundamental meaning of the Taiji diagram drawn based on this. Chinese studies (medicine, astronomy, geography, mathematics, philosophy and even various classics) are all based on this, and have profoundly influenced the worldview and outlook on life of the Chinese people. ”

Lu Dongbin said with a smile: "The apprentice Hugh wants to bully the apprentice grandson...... "Tong Zi Wen Yi" emphasized: "Qiankun is one yuan, yin and yang rely on each other", there is no problem of yin and yang duality. Zhou Dunyi's "Taiji Diagram" has this description: "Wuji and Taiji." Tai Chi moves and generates yang, moving poles and stillness, static and generating yin, and static poles removing. One movement and one stillness, each other is its root. Divide yin and yang, and stand on the two instruments. Therefore, "it is easy to have Tai Chi, and it is to give birth to two instruments". (Yin and yang) two qi (Ke Yi Avenue note: originally "Qi") sympathetic, incarnate all things. Everything grows, and there is no limit to change. This is the best and most complete elaboration of the concept of yin and yang by ancient Yi scholars. Although this kind of elaboration is too detailed, it is too abstract and too general, so it is difficult to understand.

Lu Dongbin called Xiao Tianshu's apprentice grandson, and he couldn't help but laugh proudly, Xiao Tianshu looked embarrassed and confused.

In short, yin and yang are first of all two opposing and unified energies existing in nature, forming two particles with the nature of opposites and unity, and these two energies and particles with the nature of opposites and unity are the sufficient and necessary conditions to promote the laws of change, such as the birth, growth, harvest, and storage of all things in nature, including human beings. The Chinese ancestors observed, summarized, inducted, and refined the natural yin and yang through the observation of astronomy and geography, and applied it to medicine, military science, philosophy, and prediction through the exertion of the yin and yang of the easy learning. He has left a valuable legacy for our future generations.