Legal analysis: not illegal. The law does not protect unmarried sex. The woman has the right to decide whether to have an abortion. After giving birth to a child, the girl can claim alimony. If it can be proved that it is the man's child, you can ask for appropriate compensation. If the man is married, but conceals the fact of marriage, associates with girls, resulting in pregnancy and other consequences, you can ask the man for compensation.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 26 Parents have the obligation to support, educate and protect their minor children.

Adult children have the obligation to support, help and protect their parents.

Article 1067 If parents fail to perform their maintenance obligations, minor children or adult children who cannot live independently shall have the right to ask their parents to pay alimony.

Parents who fail to perform their maintenance obligations, lack the ability to work or have difficulties in living have the right to claim alimony from their adult children.