A lamp of the Western Han Dynasty (206 B.C.-25 A.D.) is displayed at an exhibition of civilization of the Qin (221 B.C.-207 B.C.) and Han (202 B.C.-220 A.D.) dynasties, in Beijing, capital of China, Sept. 17, 2017. (Xinhua/Jin Liangkuai)
A lamp of the Western Han Dynasty (206 B.C.-25 A.D.) is displayed at an exhibition of civilization of the Qin (221 B.C.-207 B.C.) and Han (202 B.C.-220 A.D.) dynasties, in Beijing, capital of China, Sept. 17, 2017. (Xinhua/Jin Liangkuai)