The 7th and 8th caves of the Yungang Grottoes, a world cultural heritage site, were reopened to the public on the 27th after a 5-month period of digital protection and restoration. Starting from May 13th, Yungang Research Institute has implemented temporary closure protection for Cave 7 and Cave 8, and carried out systematic digital protection work such as high-precision 3D scanning, disease monitoring, and cave environment investigation. The project team uses technologies such as laser scanning and multispectral imaging to collect millimeter level data on cave sculptures, murals, and building structures, and establish permanent digital archives. This protection project not only repaired the cracks and dangerous rocks in the caves, but also provided real-time environmental changes such as temperature, humidity, and light through a dynamic monitoring system, providing data support for subsequent scientific maintenance. In addition to digital protection, Yungang Research Institute has been promoting the "going global" of cultural relics in recent years through methods such as 3D printing to replicate caves and cross-border art cooperation. The 3D printed caves of Cave 3 and Cave 12 have been unveiled in Shanghai, Hangzhou and other places. The 7th and 8th caves are the earliest twin caves excavated during the middle period of the Yungang Grottoes. They were a large set of caves designed and completed during the early period of Emperor Xiaowen of Northern Wei (471-494 AD). The two caves blend Greek style columns, Indian Gandhara Buddha statues, and traditional Central Plains architectural elements, confirming the cultural integration of the Silk Road. The Yungang Grottoes are located at the foot of Wuzhou Mountain, 16 kilometers west of Datong, Shanxi Province. They were first built during the Northern Wei Dynasty and currently have 45 main caves, totaling over 1100 small niches and more than 59000 statues of various sizes. It is one of the largest grotto groups in China. In 2001, the Yungang Grottoes were inscribed on the UNESCO World Heritage List. (New Society)