Core Viewpoint - The article discusses the advancements in the protection and preservation of ancient grottoes, particularly focusing on the use of innovative materials and technologies, such as 3D printing and digital modeling, to enhance the longevity and integrity of these cultural heritage sites [2][6]. Group 1: Preservation Techniques - Traditional materials like lime-based or epoxy resins used for repairing sculptures are being replaced with new inorganic eco-friendly grouting materials [2]. - The implementation of isolation doors at sites like Dunhuang Mogao Grottoes has proven effective in creating a controlled microenvironment that protects against environmental factors such as wind and moisture [4][5]. - A systematic preventive protection framework is being established, transitioning from emergency reinforcement to preventive measures and from exploratory repairs to precise restorations [5][6]. Group 2: Digital Technology in Preservation - Digital technologies are being utilized to extend the life of grottoes, with techniques such as 3D scanning and modeling being employed to replicate damaged artifacts [6][7]. - The integration of smart monitoring systems is enhancing the preservation efforts, with platforms developed to track various environmental indicators [7]. Group 3: Cultural Heritage Utilization - The discussion emphasizes the need for a balance between protection and utilization of cultural heritage, advocating for diverse visitor experiences such as deep tours and educational programs [9][10]. - The development of a 5G digital management platform at Longmen Grottoes aims to improve visitor experience through better management and service delivery [10]. Group 4: International Collaboration - International cooperation in heritage preservation has expanded, with projects involving multiple countries and institutions aimed at sharing knowledge and techniques [11][12]. - The article highlights the importance of multidisciplinary approaches in heritage protection, encouraging educational institutions to foster cross-disciplinary learning opportunities [13].

Core Insights - The article discusses the advancements in the preservation of ancient rock caves, particularly focusing on the use of new materials and technologies such as 3D printing and digital modeling to enhance the longevity and integrity of these cultural heritage sites [1][5][10] Preservation Techniques - Traditional materials like lime-based and epoxy resins are being replaced with new inorganic eco-friendly grouting materials to prevent aging [1] - The implementation of isolation doors at sites like Dunhuang Mogao Caves has proven effective in creating a controlled microenvironment that protects against environmental factors such as wind and moisture [3][4] - A shift from emergency reinforcement to preventive protection is being emphasized, with a focus on systematic and holistic approaches to cave preservation [3][4] Technological Innovations - The use of 3D printing technology is being explored for repairing irregularly shaped artifacts, allowing for lightweight and adaptable solutions that blend with the surrounding environment [5] - Digital technologies are being utilized to create comprehensive monitoring systems that track various environmental factors affecting the caves [5][6] Cultural Engagement and Tourism - The article highlights the importance of balancing preservation with cultural engagement, suggesting that heritage sites should not remain closed off but should actively involve the public [8][9] - Initiatives such as night tours and targeted educational programs for different demographics are being developed to enhance visitor experience and engagement with the cultural heritage [8][9] International Collaboration - The article notes ongoing international cooperation in heritage preservation, with projects involving countries like Cambodia and Uzbekistan, showcasing a commitment to sharing knowledge and resources [10][11] - The integration of multi-disciplinary approaches in heritage preservation is encouraged, emphasizing the need for collaboration across various fields to enhance the effectiveness of preservation efforts [12]