Students attend a historical knowledge contest on Qin and Han dynasties at Xinhua Primary School in Hohhot, North China’s Inner Mongolia autonomous region on Sept 4, 2017. A series of historical events were organized by Emperor Qinshihuang’s Mausoleum Site Museum and Emperor Hanjingdi’s Mausoleum Museum, aiming to raise students’ interest in ancient history and culture. [Photo/Xinhua]