A visitor takes photos of a rubbing of stone sculptures dating back to the Han Dynasty (202 B.C.-220 A.D.) at an exhibition in Beijing, capital of China, Aug. 25, 2018. Over 100 rubbings of stone sculptures discovered from tombs of the Han Dynasty in Xiaoxian County of Anhui were displayed during the exhibition which kicked off in Beijing Saturday. (Xinhua/Yin Gang)