In china,most of people were young,they live with their grandparents,because both their parents are busy with their work,so they have no time to care for their baby.
The first different is some country like american,a lot of grandparents did not like to take care children for a long time.most of grandparents when they retired,they did like to go on vacation.
the second different in some western country people has independent consciousness.So people don't like rely on other people.
However,In china.there have many different.child usually live with their grandparents.