Over the years, there has been ongoing discussion and practices around various housing issues, such as the increasing urban density, high living costs and unaffordable housing prices, disparities between ideal and actual living spaces, interplay between virtual and physical space, and the changing idea of urban living among younger generations. In China's major cities, the housing discourse predominantly revolves around housing issues for the urban youth, which affects not only their livelihood but also the city's overall competitiveness. To shed light on the living conditions of young people in today's large cities and explore their living preferences and social patterns, the 90th issue seeks to present a truthful and objective portrayal through case studies across various housing types, and to provide references for academics and practitioners, and moreover, encourage more stakeholders to get involved in the community building for the urban youth.