Specialty DigestEncyclopediaClear, sourced entries on the people, places, ideas and disciplines that shape our world.Search Specialty KnowledgeSearchABCDEFGHIJKLMNOPQRSTUVWXYZEntries starting with XXi’an: China’s Ancient CapitalXi'an is the capital of Shaanxi province in north-central China, a former imperial capital known worldwide for the Terracotta Army and its role as the Silk Road's eastern terminus.