North Site, Engraved Sutra Cave, Bei Sutra, a-b1
北响堂刻经洞《佛说孛经》a-b1
North Site | South Cave (Engraved Sutra Cave)
Northern Qi (550-577) | Buddhist Sutra
Volume 1 Figure 17:3 in book Xiangtangshan shiku beike tiji zonglu by Zhang Lintang and Xu Peilan
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