Legal analysis: During the marriage relationship, one spouse can generally give up inheritance unilaterally. However, if the heir is unable to fulfill the relevant obligations stipulated by law because of giving up the right of inheritance, the act of giving up the right of inheritance is invalid.

Legal basis: Interpretation of the Supreme People's Court on the Application of the Succession Part of the Civil Code of People's Republic of China (PRC) (I).

Article 32 If an heir is unable to perform his legal obligations because he renounces his right of inheritance, the act of renouncing his right of inheritance shall be invalid.

Article 33 Where an heir renounces his inheritance, he shall notify the estate manager or other heirs in writing.

Article 34 In a lawsuit, if an heir renounces his inheritance orally to the people's court, a written record shall be made and signed by the renounced heir.