What does online fortune telling say about how old you should be to prevent filial piety?

Filial piety is a kind of clothing worn by filial children for their dead elders. According to the distance between blood relatives, there are five kinds of clothes. So it's called wufu.

Clothing, originally meant mourning. According to the five different mourning clothes worn by the relatives of the deceased. Taking the paternal line as the ancestor and taking itself as the basic point, it dates back to Gaozu, that is, within the Five Dynasties. High-impedance died, to wear mourning; When my great-grandfather died, my children and I had to wear mourning clothes. Including immediate family members and collateral relatives, are all relatives who should be in Dai Xiao. Later, the "five clothes" were extended to relatives in this range within five generations.