Article 23 of the Adoption Law: From the date of the establishment of the adoption relationship, the rights and obligations between adoptive parents and adopted children shall be governed by the provisions of the Law on the Relationship between Parents and Children; The rights and obligations between adopted children and close relatives of adoptive parents shall be governed by the provisions of the Law on the Relationship between Children and Close Relatives of Parents.

It can be seen from this article that the rights and obligations between the adopted granddaughter and the grandparents who form the adoptive relationship are the same as those between the natural blood relatives.

Of course, there is an obligation to support.