According to the old book "A Pilgrimage to the Realm of Spirits," the sound of a drum, "don-don," is interpreted as the collision of good waves and evil waves. Sounds that cannot be heard inside a hall become audible outside because good waves and evil waves collide.

In this book, good waves are composed of fine, subtle vibrations, while evil waves are made of coarse vibrations. Because natural vibrations are slow, good spirits can enter the evil world, but evil spirits cannot enter the good world. The sound of the drum is heard because evil waves are near good waves, resulting in the suppression of the good waves.

Furthermore, living beings can be distinguished by the frequency of these vibrations. People who perform many good deeds are immediately apparent.

In addition, the description of "void" states that the void realm has stages of "void water," "void fire," "void earth," "void light," and "void void," with the final "void void" being the true void realm. "Void water" is the innate water attribute of "qi," which is the divine body and the original body. The essence of this "void" is "the origin," and it is described as an "integrated whole of existence and non-existence."

In other words, existence means movement, and non-existence means the state before that, and the original world where movement does not exist is considered to be the essence of God. This interpretation can be said to be very logical.

This is quite a clear explanation, and if the relationship between emptiness, existence, and non-existence is as simple and clear as this, then it seems like one could understand it without having to worry or struggle like in Buddhist teachings.

I have heard similar stories in various places, and while some are the same, others are slightly different. The situation seems to lack consistency. However, I think this clear explanation could be the essence of one explanation.

In the future, it will be necessary to verify this, but I think that explaining things in this direction, as a promising hypothesis, could connect various things into a single line.