Photographer spends years documenting Chinese grotto art
Updated: 2023-04-18 09:17( chinadaily.com.cn )
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Xumishan Grottoes in Guyuan city, Ningxia Hui autonomous region, on Feb 5, 2013. It is one of the top 10 grottoes in China and was first built during the Northern Wei Dynasty. [Photo by Ren Shichen/cpanet.org.cn]