Blood Taboo
An old taboo against acupuncture, surgery, and slaughter involving bloodshed.
Blood Taboo (血忌) is an inauspicious astrological term found in old almanacs, directly related to 'blood.' Traditionally, this day is considered unlucky, especially for all activities involving seeing blood or bleeding. This specifically includes medical procedures like acupuncture and surgery, as well as the slaughter of livestock. It is believed that performing these activities on this day can lead to uncontrollable bleeding, unhealed wounds, or bloodshed disasters.