In the context of Ha Noi’s orientation toward a “multi-layered, multi-tiered” urban development model, the interview with Ha Noi Press, Radio and Television Authority of Mr. Nguyen Hung Quang offers insightful perspectives on expanding development space vertically, from underground to low-altitude and high-altitude domains. Beyond planning considerations, the key message emphasizes the need for a breakthrough and flexible legal framework to effectively harness these emerging spaces, while laying the foundation for modern economic models such as smart cities, high-tech logistics, and the data economy. These proposals suggest a new approach to urban governance, paving the way for a more sustainable, innovative, and future-ready capital.