Hongbo Liu, “The Study Tour Must Not Deviate from Its Course ——Transformation Pathways for Study Tour Service Providers at the Outset of the 15th Five-Year Plan Period: Reflections Based on the ‘Beyond Sunshine Study Tour’ Educational Ecosystem and Recent Central Media Warnings”, erstp, vol. 2, no. 3, pp. 54–57, Jun. 2026, doi: 10.63944/wdrb12.