Artists perform in the premiere of a historical stage drama depicting Qin Dynasty (221-207 B.C.) terracotta warriors in Xi'an, northwest China's Shaanxi Province, June 30, 2018. (Xinhua/Zhang Bowen)

Artists perform in the premiere of a historical stage drama depicting Qin Dynasty (221-207 B.C.) terracotta warriors in Xi'an, northwest China's Shaanxi Province, June 30, 2018. (Xinhua/Zhang Bowen)