【正确答案】Properly handled, parent-child relationship will leave neither of them the sense of loss. It is periodical happiness to have interaction with our children when stepping into middle ages. However, we should not attach too serious significance to it, nor should we consider it unimportant at all. God does not allow our children to remember our selfless deep love for all their life, for which would binder their growth, nor does he allow us to remember our sacrifice for them either, for which would entrap us into the miserable situation of expecting rewards. And in fact, what we have given to our children has already been paid back in their childhood by giving us a big hug or telling us with their baby-talk like "I love you so much, Mummy!" and "Daddy, I gonna marry a good man like you!" Yes, all of these are their love in return.