What is the evolution process of ghost characters? Urgent! ! ! ! ! ! Explain this word according to the structure of ancient Chinese.

Ghosts come from this side. The part of "Tian" means a mask, and the symbol in the lower right corner means private, and the sound is the same as that of noble "Gui", because the above representation is used by leaders and people in positions such as chicken feathers. Therefore, the whole private mask means nobility. Later, when these people died and the mask was still there, they were referred to by it. Later, such pronouns became popular among the people, so ghosts evolved into words referring to the dead. The answer is outdated. I'm sorry/sorry/I feel bad/I can't wake myself up. ...