This article explores the phenomenon of Tianshan laomu female spirit-mediums in the following ways: first, it explores how female spirit-mediums, that are essentially grass-roots religion, express the abstract and metaphysical nature of sacred power through the concrete activation of their mother language and personal narratives; second, it explores how female spirit mediums reveal meanings associated with popular supernatural symbolic systems (for example, the sacred world of the unification of yin and yang [yingyang heyi 陰陽合一], the competition and cooperation of the supernatural world, and the links between numinous spirit writing and traditional popular religious concepts like cyclic existence [lunhui 輪迴], karmic creditors [yuanqin zhaizhu 冤親債主], and others); third, it explores how female spirit mediums, through myths of divine integrity and the operation of numinous power, reveal the integration of cultural symbolism and the individual authority and will of female spirit mediums, giving prominence to the self-affirmation of religious individuals of disadvantaged social stratums.