In principle, no. Under certain circumstances, support obligations may arise between siblings. In this case, no.

Legal article link: Article 29 of the "Marriage Law"

Brothers and sisters who can afford it, for minor brothers and sisters whose parents have died or whose parents are unable to raise them, There is an obligation to support. Brothers and sisters who are able to afford it and are raised by their brothers and sisters have the obligation to support their brothers and sisters who lack the ability to work and lack a source of income.