How old can single parents depend on their children?

Examination and approval conditions for parents to take refuge in their children:

1, male over 60 years old, female over 55 years old, or both husband and wife retire, and one of them meets the standard; 2, because of job transfer and other reasons in other areas from (back) Hugh personnel need to go back to our city to take refuge in children.

Materials to be submitted: 1, the application of the trusted person and the certificate of the unit or street; 2, household registration book, ID card (including a copy); 3. The household registration certificate of the asylum seeker; 4, take refuge in people's retirement certificate (pieces), marriage certificate.