This paper uses the Tai Chi philosophy as a framework.

The idea of yin and yang originated in ancient times. Created by Fu Xi (7724-5008 BC), the innate Bagua depicts the balance and contradiction of the universe and the phenomenon of yin and yang in interaction in an orderly manner through the combination of simple yin and yang symbols.

Tai Chi is the embodiment of ancient Chinese philosophical thought, embodying the simple dialectical thought. The Tai Chi philosophy, also known as the Book of Changes, was not written by a single person, and the book was written over a long period of time. From the drawing of Hetu and Luo Shu to the writing of the Book of Changes, the establishment and application of the Yin and Yang symbols and their mutable transformation relationships have also gone through more than 3,000 years. During the Spring and Autumn Period, Lao Tzu wrote the Tao Te Ching and Confucius wrote the Book of Changes, which were inherited for thousands of years, and gradually formed the culture of the Book of Changes.

"Tai Chi" refers to the principle of the extreme, including the largest to the smallest time limit of time and space, which can refer to the earth, the solar system, the Milky Way, and even the universe. As a commanding cosmology, Tai Chi philosophy has profoundly influenced the development direction of Chinese philosophy and culture, and is the root of "dragon" culture.

The Dark Forest is a corollary, and the theory employs Euclidean geometry. The "Fermi paradox" has considerable influence in the astronomical community because it is based on scientifically discovered facts, and many famous scientists are in favor of it.

Liu Cixin's science fiction novel "The Three-Body Problem" believes that the universe is a dark forest, and proposes the law of the dark forest: life on every planet is a hunter with a gun, and if he finds other life, there is only one thing he can do: shoot it and destroy it. In this forest, others are hell, an eternal threat, and any life that reveals its existence will be quickly wiped out, and this is the picture of cosmic civilization.

The "Fermi Paradox" is an open topic for both the astronomical community and the science fiction community.

Liu Cixin: If there are extraterrestrial civilizations, is there a common moral code in the universe? To put it mildly, this is a question that will be of great interest to sci-fi fans; In the grand scheme of things, it may be a matter of life and death for human civilization. I think it is entirely possible for a cosmic civilization with zero morality to exist, how can a moral human civilization survive in such a universe?

This is one of the focuses of many science fiction writers.

Human beings' curiosity about the universe has never stopped, but human beings have still not found a good way to find aliens. According to the Drake Equation, there are at least hundreds of thousands of extraterrestrial civilizations in our galaxy. At present, human beings on earth can only rely on imagination, it is an existence, an unknown existence. According to the Tai Chi philosophy, there is something kind and there is evil (positive and negative). Opinion: Don't overestimate aliens.

Frank Drake and Carl Sagan argue that the lack of evidence of the existence of aliens cannot be evidence of the existence of aliens. Sky Eye FAST, one of the missions is to search for extraterrestrial civilizations, and has not yet found aliens, but hears a shocking cosmic "heartbeat".

Earth's human scientists are looking for extraterrestrial civilizations, but no extraterrestrial civilizations have responded; However, scientists are still actively exploring and have never given up. There are few things that have really confirmed the existence of aliens, and there is not enough evidence to tell us. Higher aliens may see us from space, or live among us, but we just can't see them. Since the middle of the last century, UFOs or USOs have appeared frequently on the earth, and thousands of witnesses have been witnessed. UFOs flew over my head at a very low altitude, it was real. According to the "alien contact level", it belongs to the first type of contact: close sighting.

Quiet night, a lamp, a cup of tea, light and light. Calm down!