I have a simpler exposition of this Confucian doctrine: We all have ROLES, as parent, spouse, or an employer or an employee, amongst other things. To make the world a better place, we fulfil the duty our roles require.
Er, that's it.
Oh, and the child has a duty to obey its parent, and the parent has a duty to impose this duty on his or her child.
I think that really is it.