Fig. 1: Distribution of SRSCs in Nanjing and its surrounding areas.

This map shows the spatial distribution of SRSCs across several regions in Jiangsu and Anhui Provinces, including Nanjing, Zhenjiang, Chuzhou, Hefei, Bengbu, and Huai’an. The markers represent different levels of heritage designation. Orange stars indicate National Cultural Heritage sites, blue crosses denote Provincial Cultural Heritage, green triangles represent City Key Cultural Heritage, magenta squares show City Cultural Heritage, yellow diamonds indicate District Cultural Heritage, and gray circles denote unclassified sites. The clustering of heritage sites is particularly notable in and around Nanjing, suggesting its historical prominence. Administrative boundaries, major cities, and scale are also depicted for geographic reference. All symbols are clearly labeled in the legend.