Dynamic Adaptability and Street Vitality in Hutong Neighborhoods of Beijing’s Old City

This study examines the dynamic adaptability of Dashilar’s hutong system and its role in maintaining street vitality and functional mix in Beijing’s old city. Defined as small-scale incremental adjustments without large reconstruction, dynamic adaptability is evaluated through four dimensions: network connectivity, human-scale proportion, functional mix, and street-edge interaction. The results indicate that Dashilar’s well-connected network and human-scale streets support walkability and small-scale commerce, while historical comparison reveals how the area has continuously adapted to socio-economic changes, maintaining long-term street vitality through such adaptive spatial processes.