Haijian Wang, Hui Chen
Effective dissemination of the Outstanding Universal Value (OUV) of World Heritage sites is a crucial foundation for achieving heritage protection, display, and social sharing. This paper takes the Tangya Tusi Site as an example, using its World Heritage value composition as a reference. It collects 408 valid online reviews from platforms such as Ctrip and Xiaohongshu from 2020 to 2025, and comprehensively utilizes word frequency analysis, semantic network analysis, and LDA thematic model to examine the thematic structure of tourists' value perception and its correspondence with the connotation of OUV. The study finds that tourists' perceptions mainly focus on World Heritage identity, the physical structure of the site, and the integration of ethnic cultures, with relatively limited understanding of the Tusi system and related historical figures. The differences in tourists' value perceptions are not simply reflected in whether a certain type of value is recognized, but rather in the gradual weakening of semantic relevance and narrative integrity as perception extends from visible remains to abstract systems and historical relationships. Therefore, the value interpretation of the Tangya Tusi Site should start with the existing site as the cognitive starting point, strengthen the narrative connection between spatial form and institutional history, and construct an interpretive path from "remains identification" to "value understanding." This study provides a textual analysis approach for assessing the public accessibility of World Heritage sites.