Our parents fostered us when we were a kid.Parents are always looking after very well all the time.We could not grow up by ourselves,right?When we gradually grow up,that means our parents gradually older and older,right?Therefore,when we can make money,we should repay the loving-kindness to our parents,right?We should know about something that we are all from mom and dad,without them where were we from?So we have to be a good child,and to be a filial piety child.