Who knows the origin of three ghosts and four gods?

"God has three ghosts and four", that is, there are three heads for worshipping God and four heads for worshipping ghosts.

According to some old people, the "images" painted on paper or placed during sacrifice are generally "gods", while graves, ashes and memorial tablets are mostly "ghosts". Among them, "etiquette" is very complicated. I was born in the 1980s. When I first boarded "Elegant", I was bound to make mistakes. In this regard, the old people only know "jokes" about me, but they can't explain why. They just talk about "the rules handed down by our ancestors, just remember them." Perhaps, ghosts are closer to us.

It is impossible to explore when and why the "three ghosts and four gods" began, and we can only vaguely realize that people's awe of "ghosts" is greater than that of "gods". The so-called "death is easy to see, but children are difficult" probably means the same thing. "Rebecca" works in the sky and should belong to the category of God.