The reason that women in confinement are seen as inauspicious is related to the high death rate among childbearing women in the past as well as to the traditional taboo of menstrual blood and the belief that women are unclean.
月子中的產婦之所以被人視為「不祥」，當然和過去產婦的高死亡率，及中國傳統忌諱女人經血、認為女人汙穢不潔有關。