Grand Sha (Dà Shà)
A term for a powerful malevolent star in old Chinese almanacs, indicating a day inauspicious for military campaigns, groundbreaking, or weddings.
Dàshà is a powerful malevolent star (shā) found in old Chinese almanacs, its name itself indicating its severe negative nature. Traditionally, it is believed that the cosmic atmosphere on this day is unfavorable, and undertaking important or risky activities easily invites disaster or obstacles. Therefore, almanacs typically mark it as a day of taboo (jìrì), primarily advising against launching military campaigns, starting construction projects, and holding major life ceremonies like weddings, to prevent unexpected calamities or unfavorable developments.