In a society undergoing rapid change and facing the realities of an aging population, many individuals find themselves unprepared for the challenges of growing older. In China, with the decline of family support and inadequate state-provided eldercare, many Chinese seniors are compelled to reposition themselves in the world and seek appropriate ways to manage their aging process. This study, based on eighteen months of ethnographic fieldwork in Zhejiang, China, explores how Chinese seniors navigate these challenges by engaging with the local health supplements market. These markets, often perceived by the public as gray areas that exploit seniors, serve as vibrant social hubs where seniors find not only health products but also community, care, and a sense of belonging. By using care as both the object and lens of its inquiry, this research delves into the mutual, dynamic interactions among seniors in these markets. Activities such as promotional meetings, free massages, and casual conversations with salespeople and peers create spaces where seniors are freed from daily obligations and stereotypes, allowing them to express their true selves. In these spaces, senior customers not only enjoy receiving care but also actively provide care to salespeople and fellow customers. This reciprocal care challenges traditional, one-dimensional views of eldercare that focus mainly on the caregiving side and thus undervalue the experience of care receiving side. This study engages with classical anthropological discussions on value, reciprocity, kinship, and deception, while addressing critical issues of aging and community building. By highlighting how seniors create supportive networks and find a sense of belonging in informal market settings, this research offers new perspectives on the social dynamics and imaginative labor involved in eldercare.