ABSTRACT Heritage language maintenance is a challenge faced by many immigrant parents. Previous studies on Chinese immigrant families and inheritance of the mother tongue privileged a pedagogical perspective focusing on second-language acquisition and literacy developments. Little attention has been paid to the nuanced understanding of how Chinese immigrant parents help their children construct language resilience of (un)belongingness across home and host contexts and how children negotiate fluid hybrid identity construction. Through questionnaires, semi-constructed interviews, and home visits with four Chinese immigrant families in the United States, this linguistic ethnography study probes the linguistic ecology, (in)visible language planning, and discursive identity construction in Chinese American diaspora families. The findings suggest migrant parents’ congruence and conflict in explicit and implicit family language ideology, management, and practice. Children negotiate fluid discursive identity construction and mediate hybrid culture characterised by the diversity of pathways of language learning as a (dis)continuum. The findings highlight the significance of a linguistic ecological niche in emergent bilingual immigrants’ heritage language maintenance and development. This research illuminates how parents can foster a greater sense of possibility for transitional children’s journeys of being and becoming bilinguals or multilinguals.