What should adult children do for their parents?

Adult children's particular obligations to their parents are filial obligations. The gratitude of filial obligations that treats one's filial obligations as duties of gratitude to one's parents is a mainstream view. However, in terms of the requirements of such obligations, the gratitude account fails to provide practical guidance. The general requirement seems that children should benefit their parents as the beneficiary should benefit the benefactor. The question is what kinds of benefits adult children should provide to their parents? In some cases, adult children feel obligated to provide particular benefits to their parents like paying their medical bills or spending time with them. While in some other cases, it seems that they can use their own discretion to decide how to satisfy the filial obligations so long as what they do benefits their parents. In this article, I am trying to argue that although the general requirement of the filial obligations is to benefit the parents, there are two kinds of benefits that adult children are strongly obligated to provide. These are special goods that parents can only get from their children and things that meet their parents' basic needs. In addition, although adult children have filial obligations to benefit their parents, there should be some limitations on the requirements of filial obligation. Namely, adult children do not have a filial obligation to meet their parents' desires that could only be satisfied at the cost of adult children's liberty related to significant aspects of their lives, or to meet their parents' desires that could only be satisfied at the cost of infringing their capacity to fulfil other important duties.