Taishen (Fetal God)
In old custom, the Taishen is believed to dwell daily at a specific spot in the home, where renovations or disturbances are forbidden that day. The almanac records its location in the format 'object + direction', e.g., 'mortar-mill-bed outer southwest'.
The Taishen (Fetal God) is a deity in old folk belief specifically responsible for protecting the unborn child, though its location must be avoided. People believed the Taishen would stay at a particular spot in the pregnant woman's home each day, so the almanac would indicate the 'Taishen's occupied direction' in the format of 'object plus direction', e.g., 'mortar-mill-bed outer southwest'. If construction, moving, or hammering, and other ground-disturbing activities, were carried out in the direction occupied by the Taishen on that day, it was traditionally thought to disturb the Taishen, potentially causing harm to the mother or fetus. This was a special taboo in old times related to domestic safety during pregnancy.