Can't a son cut his parents' hair? I work in a hair salon. I have cut my parents' hair many times, but many people say I can't cut my parents' hair. Yes

Quoted from patriarchal feudalism. The ancients said that the body has hair and skin, so men and women in ancient times could not cut their hair. Hair and skin are important for filial piety. Therefore, parents' hair and skin are also very important. Children can't cut their parents' hair, which is disrespectful. I feel guilty for not respecting my parents! Now it is 2 1 century, and it has been many years since it broke away from the feudal ideological law. Why continue to be superstitious about feudal thought?