“言为心声 — words are the voice of the heart.” But where does the heart go when that voice is displaced from a body that still breathes? In a world where artificial intelligence accelerates and replicates the human form, the boundary between spirit and simulation begins to dissolve. Time, life, and voice become commodities. 40 Epochs is a hybrid-narrative film exploring spiritual displacement, fractured identity, and the unseen labor behind human-like technologies. Inspired by the artists' experience training an AI model to reproduce Sun’s voice, the film follows a donor in solitude as she reads, records, and revises. What begins as ritual becomes rupture, as intimate gestures entwine with the demands of machinic repetition. Narration is carried by the artifact at its core: a synthetic voice generated from Sun’s speech. Disembodied from its origin, it speaks in her place—an uncanny meditation on memory, embodiment, and the estrangement of being heard without being present.