Working under the collective name yietnu, Zhang Yi and Ha Nu  are artists and researchers who live and work between Paris and Lille. In 2025, they were awarded the DNSAP with distinction from the beaux-arts de Paris. They are currently researching for their doctorates at the University of Paris 1 Panthéon-Sorbonne and the University of Paris 8 respectively. Since 2020, they have been developing an interdisciplinary practice in which fiction acts as a critical technology, capable of shifting regimes of knowledge, reordering narratives and opening up new spaces of perception. Through cinematic language, 3D video, installation, sculpture and other forms, gestures and devices emerging from their research, the duo yietnu composes multidisciplinary and transmedia works in which vanished mythologies, heritage objects, energy infrastructures and changing territories all intersect. Their practice unfolds within a dynamics of displacement, instability, complexity and ecological interdependence. Together, they dismantle any obligation to unity: their genders become fluid, their cultures hybridise, their chronology goes haywire and their subject matter circulates between the human and the non-human, through the mediations of the machinic and the ecologies of the living.