Mourning attire, or "xiaofu," is the traditional funeral clothing worn by the children and descendants of the deceased during the mourning period. Typically made from plain white or coarse linen, the edges of the garments are left unfinished to symbolize grief and mourning. Wearing mourning attire is a mark of respect and sorrow for the departed and an essential part of Chinese funeral rites, reflecting the cultural emphasis on filial piety and reverence for ancestors.