Due to its accurate representation of parent–child interaction quality in Confucian-influenced cultures, contemporary filial piety, which refers to general beliefs about how children are expected to behave toward their parents, has drawn increasing attention in academia. However, how filial piety associates with intimate relationships beyond the family setting is less clear. This study examined the relation between dual filial piety (i.e., reciprocal filial piety and authoritarian filial piety) and romantic relationship quality among Chinese youths. We explored a mediational model in which we tested whether dual autonomy (i.e., individuating autonomy and relating autonomy) would help explain how Chinese youths' beliefs in filial piety are linked to the quality of their romantic relationships. A total of 605 youths from Macau (N = 291) and Taiwan (N = 314) who are currently or once romantically involved participated in the study. We employed structural equation modeling to analyze the data. Results showed within-culture invariance regarding the direct and indirect associations between filial piety, autonomy, and romantic relationship quality. Specifically, young people in both Macau and Taiwan who endorsed higher reciprocal filial piety had more individuating autonomy, which in turn contributed to them having higher quality romantic relationships.