Shiyin
Traditionally auspicious for planning, strategizing, managing affairs, and acting covertly.
Shiyin refers to a time or day that possesses obscure, yin, and feminine qualities. Traditionally, this type of energy field is considered unsuitable for prominent, public affairs but is instead beneficial for activities requiring careful thought and covert maneuvering. Therefore, ancient almanacs often recommended using such days for strategic planning, laying out business operations, or handling private matters that are not suitable for public disclosure, believing that goals can be achieved more smoothly through discreet action.