Beneficial to Posterity (Yì Hòu)
A term for a day beneficial to descendants; traditionally auspicious for seeking blessings, praying for heirs, or establishing succession.
The literal meaning of "Yì Hòu" is beneficial to future generations. In traditional belief, this is seen as a day with positive effects on family continuity and the well-being of offspring. Therefore, almanacs of the past often recommended performing acts such as praying for blessings, asking for children, or appointing an heir for the childless on this day. The core expectation is to lay a good foundation for the future development of the family lineage.