Especially in ancient times, when sanitary conditions and medical technology were not as developed as they are now, it was common for people to die in childbirth, save the small ones without saving the big ones, or kill two people at once.
Then, when your parents are alive, don't always think about how to celebrate your birthday. You should turn around and thank your mother for giving birth to yourself so hard and giving yourself a chance to live. This day should be my most grateful day.
"Father doesn't need a beard", because a beard once represented age and authority. When your father is still alive, he is still the head of the family, so you should know how to respect your father. Then, young people should not grow a beard while their father is still alive.
Don't try to challenge your father's authority or listen to his persuasion. If the father is still alive and the son has a beard, it is disrespectful to the father to outsiders.
Of course, this sentence is an old saying. Although not many people know it now, there is some truth in it, and the filial piety we have been taught should also be observed.
However, our filial piety today should not just stay on the surface. Just like the second half of this sentence, can young people really grow beards when their father is alive? Of course, no one will see it that way now.
However, we should pay more attention to practical things, and filial piety to parents should be implemented, not just superficial or even verbal.