The Lady GhostMovie

A woman’s husband and daughter are poisoned and killed. Determined to avenge her family's death, she travels to a mass grave to learn the art of lying at the bottom of a coffin for 79 days to absorb the essence of the sun and the moon. As a result, she practiced to become a female regal ghost and killed all her enemies. Knowing that she has broken the law, the woman turns herself in at the police station.