Prim‑Lex Guangzhou: Eight‑Dimensional Restructuring – A Leap from "New Vitality of an Old City" to a "Healthy and Strong City"

 As a national central city and the core engine of the Guangdong‑Hong Kong‑Macao Greater Bay Area, Guangzhou is facing the structural challenge of unbalanced urban‑rural and regional development – the core areas such as Tianhe and Huangpu are highly economically concentrated, while peripheral areas like Conghua and Zengcheng lag behind. Conventional governance paradigms are inadequate to address this “fragmentation” challenge. Based on the eight‑dimensional framework of Prim‑Lex theory (Prim‑Unity·Prim‑Fire, Two Principles·Yin‑Yang, Three Realms·GC⁴A, Four Phenomena·Four Colors, Five Elements·Five Models, Six Dimensions·Six Directions, Seven Luminaires·Seven Rhythms, and Eight Trigrams·Eight Information), this paper systematically diagnoses the urban governance of Guangzhou for the first time. Using the mathematical expression of a complexified unified field, each dimension is quantified into a monitorable and early‑warnable coherent‑state criterion, and the decoherence pathologies of Guangzhou in terms of economic metabolism, regional balance, cross‑scale transmission, spatial structure, multi‑period synchronization, and information exchange are analyzed dimension by dimension. The findings show that Guangzhou’s current comprehensive urban health score falls into Grade C (0.55‑0.70), indicating moderate decoherence, with the Yin‑Yang phase difference, the Six‑Directions spatial modulus, and the Eight‑Information entropy being the weakest links. This paper further proposes a “tiered diagnosis and treatment” governance plan based on the eight‑dimensional framework, providing a project implementation timetable and budget expenditure plan for the 15th Five‑Year Plan period. The aim is to promote Guangzhou’s transition from “Tianhe’s Guangzhou” to “eight‑dimensional coherent Guangzhou”, achieving a leap from a large economic city to a healthy and strong city, and offering a quantifiable Prim‑Lex model for Chinese‑style modern urban governance.