Core Insights - The "Guidelines for Revitalizing and Optimizing Urban Stock Space" have been approved, aiming to enhance urban space utilization and economic vitality as urbanization in China surpasses 67% [1][2] Group 1: Background and Objectives - The current urbanization rate in China has exceeded 67%, with over 70% of urban development occurring within existing stock space [1] - The revitalization of urban stock space focuses on improving functional structures, optimizing spatial layouts, and enhancing urban quality, which includes the disposal of idle land, redevelopment of inefficient land, and the transformation of old towns and factories [1][2] Group 2: Implementation and Planning - The revitalization process is characterized by complex relationships of rights and interests, differing from previous large-scale expansions, and will extend from urban areas to the entire land space [1][2] - Various cities, such as Shanghai, Guangzhou, and Beijing, are implementing adaptive planning systems to manage and optimize existing urban spaces effectively [2][3] Group 3: Case Studies and Examples - Beijing has transitioned from expansion to quality improvement in urban development, with a focus on revitalizing stock space as a key aspect of its overall urban planning [3] - The city has restructured its planning approach by dividing its urban area into 1,371 planning districts, allowing for phased and demand-driven planning [3]