Vietnamese Nôm script, as a unique logographic writing system, calls for investigation from the perspective of graphonomy—the study of the intrinsic nature and structural principles of scripts. From this standpoint, research on Nôm must engage both the systemic level (the broader writing system) and the unit level (the individual character), thereby illuminating the interplay between structural persistence (diên) and transformation (cách). This dual focus constitutes a fundamental methodological need in contemporary Nôm studies. Nguyễn Tuấn Cường’s monograph, Diên cách cấu trúc chữ Nôm Việt (The Structural Persistence and Transformation of Vietnamese Nôm Characters), examines the dynamics of structural continuity and change within Nôm script through annotated versions of the Kinh Thi (Book of Odes). By analyzing the corpus of Nôm glosses in these phonetic-annotation manuscripts, the study traces the evolution of Nôm characters in both their graphic form and functional composition, across the two levels of the writing system and the individual unit. Through its conceptual framework, methodological rigor, and empirical substantiation, this work stands as a significant scholarly contribution—rigorous in theory, grounded in evidence, and precise in presentation. It offers valuable insights for both the theoretical understanding and practical study of Nôm as a living component of Vietnam’s written heritage.