Hungry ghost
Hungry ghost is a concept in Chinese Buddhism and Chinese traditional religion representing beings who are driven by intense emotional needs in an animalistic way.
The term 餓鬼 èguǐ, literally "hungry ghost", is the Chinese translation of the term preta in Buddhism.
"Hungry ghosts" play a role in Chinese Buddhism and Taoism as well as in Chinese folk religion.
The term is not to be confused with the generic term for "ghost",鬼 guǐ (i.e. the spirit of a deceased ancestor). The understanding is that all people become such a regular ghost when they die, and would then slowly weaken and eventually die a second time.
Hungry ghosts, by contrast, are a much more exceptional case, and would only occur in very unfortunate circumstances, such as if a whole family were killed or when a family no longer venerated their ancestors.