An Yongfang (L) and Wei Songlin, staff members of the research institute of the Yungang Grottoes, prepare for a study tour activity at the institute in Datong, north China's Shanxi Province, April 15, 2025. (Xinhua/Yang Chenguang)
An Yongfang (L) and Wei Songlin, staff members of the research institute of the Yungang Grottoes, prepare for a study tour activity at the institute in Datong, north China's Shanxi Province, April 15, 2025. (Xinhua/Yang Chenguang)