Whether it was called qi, lifeblood, or humors, the belief in such an essence  was common throughout the world, and still persists  in the stories of creatures who can somehow drain life from others, or some form of magical sources  that can replenish it.
Fosse chamada de chi, sangue vital, ou humores, a crença em tal essência era comum no mundo inteiro, e ainda persiste em histórias de criaturas que de alguma forma  sugam a vida de outras, ou em fontes mágicas que podem reconstituí-la.