What does filial piety mean?

Filial piety used to be very particular. There is not so much pressure now. As long as you can, Dai Xiao. However, family members should also wear plain clothes. If a child wants to wear a dutiful son, he must wear it on his head. Grandson wears a small piece of red cloth on filial piety cloth, and great-grandson wears a small piece of blue cloth on filial piety cloth. Look at the difference. Men of other nationalities wear their left arms on their arms, while women wear them on their heads.