Yue Wang. “From "The Forest Does Not Speak" to ‘The Forest Is the Classroom’ ——Learning from German Forest Education Guidelines to Explore a PBL-Based Study Tour Curriculum System in the Age of AI”. Education Research on Study Tours and Practice 2, no. 3 (June 30, 2026): 94–99. Accessed July 26, 2026. http://ojs.iajournals.cn/index.php/erstp/article/view/404.