China’s urban policy is moving from rapid expansion to steady, sustainable regeneration. Confronting issues in pre-2000s communities, such as week infrastructure and limited public services, the new approach prioritizes upgrading existing urban fabric. It promotes “Complete Residential Community” and builds “15-minute life circles” to anchor daily needs within walking distance. Additionally, a “double evaluation” system reinforces this shift, steering planners toward evidence-based and people-centred decisions. Demolition has given way to micro-regeneration and fine-grained interventions, offering a framework for sustainable urbanization in high-density contexts.