Fostering, supporting and supporting are three different concepts, and we must distinguish them.
 The upbringing mainly refers to the upbringing and cultivation of children, grandchildren, grandchildren and other younger generations by parents, grandparents, maternal grandparents and other elders.
 Maintenance refers to the legal relationship in which one of the specific relatives must bear the responsibility of providing for the other.
 Maintenance mainly refers to the behavior that children provide necessary daily necessities and expenses for their parents economically, that is, they bear certain economic responsibilities, provide necessary economic assistance, and give reasonable material requirements.
 The key is to distinguish the relationship between different subjects. In short, the main relationship of upbringing is between the elders and the younger, such as parents and children, grandparents and grandchildren. The relationship between brothers and sisters is foster, not foster. Maintenance is between parents and children.
 Article 20 of the Marriage Law of the People's Republic of China
 Husband and wife have the obligation to support each other.
 Article 21 of the Marriage Law of the People's Republic of China
 Parents have the obligation to support and educate their children, and children have the obligation to support and support their parents.