lonely friendly heartily
With the introduction of family planning policies in the 1970s, most Chinese teenagers have no brothers or sisters.They get to be the beloved  [MASK]  child.But they may not realize that they will have to "  pay back  "the love as their  loved  ones grow old.They will have to  care for  lots of old people--their parents, grandparents, their  wife's or husband's  parents and grandparents.China is being  an aging  country.