What does it mean to wear hemp on the moon column?

A horse in the moon column is used to describe the performance of funeral grief. The "Moon Column" in "The Moon Column Piercing Hemp" refers to the moon, and "Piercing Hemp" is a mourning ceremony in ancient China, expressing mourning and grief for the deceased. Wearing hemp under the moon column expresses the meaning of combining mourning with the mysterious energy of the moon. "A horse on the moon post" is a symbolic expression in China traditional culture, which is mainly used to describe sadness and grief, rather than a specific behavior or ceremony.