城市文脉指数City Heritage Index

Cultural lineage (wenmai) is the genealogy of cultural genes accumulated by a city over its long history—it includes both visible material remains such as city walls and palaces, temples and gardens, grottoes and steles, and intangible living traditions such as dialects and operas, festivals and customs, crafts and skills. Qian Mu wrote in Guoshi Dagang (An Outline of National History) that "one must hold warmth and reverence toward one's own history"; Fei Xiaotong advocated "cultural self-awareness" in his later years, calling for "each appreciating its own beauty, appreciating the beauty of others, and sharing beauty together"; Liang Sicheng spent his life calling for the protection of ancient architecture, seeing it as the carrier of a nation's historical memory. Cultural lineage is not a specimen in a museum, but the soul and root of why a city is "this city".

To measure a city's historical and cultural depth, the internationally recognized yardsticks are UNESCO's 1972 Convention Concerning the Protection of the World Cultural and Natural Heritage and the 2003 Convention for the Safeguarding of the Intangible Cultural Heritage; domestically, the core institutional framework consists of the Cultural Relics Protection Law of the People's Republic of China, the list of National Key Cultural Relics Protection Units, and the "National Famous Historical and Cultural Cities" announced in batches by the State Council since 1982. Based on this, the index selects seven traceable, verifiable indicators: founding date of the city, number of World Heritage sites, number of National Key Cultural Relics Protection Units, whether it is a National Famous Historical and Cultural City, number of national-level intangible cultural heritage items, number of museums, and historical figures.

The evaluation uses a weighted-sum model, in which World Heritage sites, National Key Cultural Relics Protection Units, and founding history carry relatively high weights, reflecting the central position of "hard heritage + long time-depth" in the weight of cultural lineage. Results: Beijing, Xi'an, Luoyang, Suzhou, and Zhengzhou rank in the top five. Overall, Xi'an, Luoyang, Nanjing, and Beijing—the cradle of Chinese civilization and the core of China's ancient-capital sequence—together with Jiangnan cultural centers such as Suzhou and Hangzhou rank ahead; newly built cities with late founding and thin heritage accumulation rank behind. This ranking is based mainly on approximations of public common knowledge, marked "subject to official figures", permanently free and public, for research and reference only.

"Wenmai" (cultural context / heritage lineage) is the vertical continuity and horizontal interconnection of a city's culture. This algorithm deconstructs it into four dimensions and provides theoretical justification:

This index uses a linear weighted-sum model. Each indicator is first mapped to the [0,1] interval through min-max normalization, then weighted:

The weight design reflects "hard heritage first": World Heritage sites (the highest OUV level) carry the highest weight of 0.25; National Key Cultural Relics Protection Units and founding history each carry 0.20, jointly characterizing "scale of remains × time depth"; National Famous Historical and Cultural City, intangible heritage, and historical figures each carry 0.10, as supplements for status and living dimensions; museums carry 0.05 because their number is more affected by local fiscal capacity and correlates less purely with cultural depth than the preceding items.

This ranking selects 50 major cities, covering municipalities, provincial capitals, cities specifically designated in the state plan, and economically strong cities, with emphasis on China's ancient-capital sequence (Xi'an, Luoyang, Nanjing, Beijing, Kaifeng, Anyang, Hangzhou, Zhengzhou, etc.) and cultural centers (Suzhou, Chengdu, Datong, Yangzhou, Shaoxing, Quanzhou, etc.), to reflect the true gradient of the cultural-lineage index. Compared with purely economic-scale rankings, this ranking replaces some emerging manufacturing cities with famous historical and cultural cities such as Luoyang, Kaifeng, Datong, Yangzhou, and Anyang, highlighting the "cultural lineage" theme.

World Heritage sites, National Famous Historical and Cultural Cities, National Key Cultural Relics Protection Units, and national-level intangible cultural heritage come from public lists (UNESCO, the State Council, the National Cultural Heritage Administration, the Ministry of Culture and Tourism), counted approximately here; the founding date, number of museums, and historical figures are approximations of public common knowledge. All data are marked "subject to official figures". Cultural lineage has a subjective and inexhaustible character—a city's temperament can hardly be fully captured by indicators, and approximations carry some error; this ranking is for research and reference only and does not constitute a final judgment of any city's cultural value.