I have seen it, too. It's a comedy from the' 80 s. The plot is that my son is too young to be a Chinese doctor, but the patient doesn't believe him. He is always asked to see an old Chinese doctor at the dinner table, so he sticks his beard and pretends to be old. My father is a barber. He is old and bald, so no one asks him for a haircut. He wears a wig to pretend to be young. As a result, the career of the father and son is booming, but there seems to be a misunderstanding later. .......

The father is young and the son is old, but he is not online.