"Taishang Laojun Open Heaven Sutra" says that the initial state of the universe before heaven and earth is the ethereal realm of the Tao without form and image, without yin and yang.

Heaven and earth are not formed, enveloping everything and filling the universe, it is really one phase, and the name is now chaotic. Its image is untransformed, and it is invisible; It is a natural seed, mixed and disharmonious, but dry and living in one.

In the early days of chaos, heaven and earth were not formed, but hundreds of millions of years later, after the birth of a god, heaven and earth were divided into six worlds, divided into the god world, the fairy world, the human world, the demon world, the demon world, and the underworld.

This god is also known as the creator god, that is, the creator or ruler of all things in heaven and earth.

God, the god of heaven, is the one who brings out all things.

After the formation of the Six Realms, it is said that his divine power was dispersed into ten major artifacts and ten divine beasts, the ten major artifacts are bells, swords, axes, pots, wheels, pianos, tripods, seals, mirrors, and stones, and the ten divine beasts are recorded in the bronze vessels of the sun candle, Taiyin Youying, and the green dragon, white tiger, Xuanwu, Vermilion Bird, Yellow Dragon, Ying Long, beetle snake, and Gou Chen in the ancient book.

With the power of the gods, guarding the Six Realms also has the meaning of preventing chaos.

The place of chaos dwells on the heavenly palace, and one day the ladder is connected, and this place is called the realm of chaos.

Since the order of heaven and earth, two gods have been born in heaven and earth, one is the god who rewards or punishes in order to manage the order of the six worlds. The other is in charge of the six divisions of the fairy world, called Jun Mo Shenjun, whose status is not below the emperor of heaven, and lives in the fairy world.

The six Si Xingjun is the six stars of the Southern Dipper, the first day of the palace, for the Si Ming Xingjun; the next day, Xianggong, for Silu Xingjun; On the third day, Liang Palace is the longevity star monarch; On the fourth day, in the same palace, it is the star monarch of Yisuan; On the fifth day, the palace is the star monarch of Doom; The sixth Tianji Palace, for the Shangsheng Xingjun, is collectively known as the Six Divisions Xingjun.

Later generations recorded in the book that "the six stars of the Southern Dipper, the longevity of the Lord Son of Heaven, also dominates the position of Prime Minister." ”

Immortals, immortals, gods are located above immortals, and there are few gods and even fewer innate gods.

In the eyes of later generations, the so-called "Six Realms" are divided into "gods, demons, immortals, ghosts, demons, and humans", among which gods and demons are extremely powerful and rarely set foot in human affairs. The ghost realm is a transit place for the souls of the other five realms, where souls are reincarnated. The fairy world in the world is centered on "Shu Mountain", and the demon world is centered on "Li Shu Mountain" inside Shu Mountain. In addition, there are several small demon worlds and fairy worlds between heaven and earth, but they are not known.

In later generations, there are also detailed explanations about the "Six Realms".