Daughters have to support their parents after marriage. Supporting parents is the legal obligation of adult children to their parents who lack the ability to work or have difficulties in life. It has nothing to do with whether they are married or not. According to relevant laws, whether the daughter is married or not does not affect their performance of legal maintenance obligations.
 Legal basis:
 According to Article 1067 of the Civil Code that will come into force on January 1, 2021
 If parents fail to perform their obligations of upbringing, minor children or adult children who cannot live independently have the right to require their parents to pay maintenance fees.
 Adult children who fail to perform their obligations of support, parents who lack the ability to work or who are in difficulty in life, have the right to demand that adult children pay alimony.