"Woven Void" translates indigenous Thao culture into precise architectural tectonics at Sun Moon Lake. Eschewing conventional typologies, the concrete massing features an inward-sloping roofline, topologically adapted to the mountainous context. Internally, a 'Porous Void' integrates passive geothermal and rainwater systems. Treating light as a tangible material, precision-engineered fiber-optics and stained-glass apertures weave natural illumination into the space. This establishes a phenomenological sequence that re-anchors the site's cultural axis through pure spatial performance.