Light has long carried a paradox at the frontier of topological photonics: the very states that make it resilient on a chip are hidden from the free-space radiation needed to reach them. A research team has now resolved this tension by folding valley edge states into the light cone through geometric modulation of terahertz photonic crystals, creating quasi-bound states that welcome free-space coupling without surrendering topological protection. The achievement quietly redraws the boundary between the open air and the integrated circuit, suggesting that the long-promised era of compact, robust