Many good things in a family should always be two-way traffic — one direction from parent to the child, the other back to the parents from the child. Good things include love, respect, care, and responsibility.  I have observed some parents unconditionally give love and care (and plenty of money) to their children while the latter have not learned to give back. One of a Chinese family that I know of here is typical of such parents. She gives and complains at the same time. She only gives but has never taught her child to give back.

This is so unfair to the giver, yet the parents only have themselves to blame, because they either have not taught or do not have the guts and wisdom to teach their children that love and care are two-way traffic.  Anything good must be told to the children.  Do not expect them to pick up good things naturally. Parents, do not dream of reaping a sweet melon when you sow a bitter melon.