I think every one must be accompanied by someone at some time, that is to say, people must need friends, but as to whether different ages need companionship with his age might not be. I think children aged 0-5 need more parents' company, and when children start school, of course, they need more peers' company, because their ideas are close to their own, The situation of the elderly is not necessarily, they will need the company of all ages, because if facing bereavement or loss of another company, they will need the company of their children, and they also like the vitality of the young people, that is, the company of their grandchildren.