The study of split households in China and beyond has traditionally centered on rural-urban migration, overlooking the prevalence of split householding among urban-urban migrants. Despite receiving scant scholarly attention, urban-urban migrant dynamics, particularly concerning relational power negotiation among women in long-distance relationships, warrant exploration. This paper delves into the experiences of urban-urban migrants in China, spotlighting how stay-behind women negotiate relational power within split households. Drawing from 30 in-depth, semi-structured interviews conducted with various types of migrant households and focusing on 12 split households, this study sheds light on the relationships of contemporary urban, educated Chinese couples with patriarchal values entrenched in the Confucian family system. The findings reveal that split households expose the tension between entrenched Confucian patriarchy and women’s aspirations for autonomy. While serving as a respite from traditional gender roles, split households inadvertently offer women newfound independence. Although not overtly challenging conventional gender norms, stay-behind women in urban-urban split households leverage agency and empowerment within the existing gender framework. This research underscores the evolving gender dynamics in China, poised between entrenched patriarchy and emerging spaces for alternative gender practices, offering insights into the nuanced experiences of women in split households.