Multi-Parameter Assessment of Internal Technological Consistency in a Non-Excavated Blue-and-White Ya-shou-bei

This study presents a methodological case study examining internal technological consistency in ceramics through multi-parameter material evidence, using a non-excavated blue-and-white Ya-shou-bei as a test object. Non-destructive Energy Dispersive X-ray Fluorescence (EDXRF) was employed to characterize geochemical signatures of cobalt pigments, ceramic body, and glaze. Diagnostic elemental ratios (Mn/Co, Fe/Mn, Rb/Sr) were evaluated against published compositional ranges for early Ming high-fired porcelain. The results show a consistent degree of compositional overlap across pigment, body, and glaze domains. Microstructural aging features and macroscopic physical properties provide contextual evidence of technological compatibility, without implying provenance, chronological attribution, or authentication. The study emphasizes the applicability and limitations of a multi-parameter analytical framework for single-object ceramic analyses within data-limited contexts.