This journal focuses on key scientific questions and challenges in the field of urban science and engineering. It particularly emphasizes international frontier topics such as urban complex mega-systems, urban safety and resilience, urban renewal and sustainable development, climate change and the urban environment, digital twins and smart cities, and urban governance. The journal is committed to building a high-level international academic exchange platform, promoting deep interdisciplinary integration, encouraging the coordinated development of original theories, technologies, and engineering practices, advancing the understanding of urban systems and technological innovation, and fostering the global development of emerging interdisciplinary fields in urban science.