1. The biological parents didn't support themselves. Details are as follows:
(1) Parents have the obligation to raise and educate their children, and children have the obligation to support and assist their parents;
(2) Minors or children who cannot live independently have the right to ask their parents to pay alimony when their parents fail to perform their alimony obligations;
(3) Parents who are unable to work or have difficulties in life have the right to ask their children to pay alimony when they fail to fulfill their alimony obligations.
2. Legal basis: Article 1067 of the Civil Code of People's Republic of China (PRC).
If parents fail to perform their maintenance obligations, minor children or adult children who cannot live independently have the right to ask their parents to pay maintenance.
Parents who fail to perform their maintenance obligations, lack the ability to work or have difficulties in life have the right to ask their adult children to pay alimony.
Article 1069
Children should respect their parents' marital rights and may not interfere with their parents' divorce, remarriage and married life. Children's obligation to support their parents shall not be terminated by the change of their parents' marital relationship.
Article 107 1
Children born out of wedlock enjoy the same rights as children born in wedlock, and no organization or individual may harm or discriminate against them.
The biological father or mother who does not directly raise children born out of wedlock shall bear the responsibility for raising minor children or adult children who cannot live independently.
Second, what are the conditions for not exempting the maintenance obligation?
1, married adult children have no economic income, but their spouse's income is enough to support their lives, and they cannot refuse to perform their maintenance obligations;
2. Parents can't shirk the responsibility of supporting themselves just because they don't support themselves for objective reasons;
3. If the parents cancel their children's property inheritance rights, the children still have to bear the obligation to support them;
4, children can't give up property inheritance through a statement without assuming the obligation of support;
If parents remarry, children can't refuse to support the elderly.