Colored terracotta heads are on display at the Emperor Qinshihuang's Mausoleum Museum in Xi’an City, the capital of Northwest China’s Shaanxi Province, Aug. 30, 2017. The museum's exhibitions include 121 terracotta relics dating back from the pre-Qin Dynasty period to the Yuan Dynasty (1271-1368). According to the museum, the artifacts display man-made blue and purple coloring. (Photo: China News Service/Zhang Yuan)
