A bronze mask with protruding pupils is displayed at the Sanxingdui and Jinsha Sites Unearthed Cultural Relics Exhibition in Changsha, capital of Central China's Hunan province, Sept 20, 2016. The exhibition, lasting from Sept 20 to Dec 20, presented 137 pieces of cultural relics unearthed in Sanxingdui site and Jinsha site. [Photo/Xinhua]