Archaeologist Agnes Hsu-Tang, director of New York-based China Institute, goes on a quest to answer one of ancient China’s most beguiling mysteries. An ancient kingdom based in Sichuan has been uncovered. Found at Jinsha - an excavation site in a Chengdu suburb - are a gold mask, bronze masks, jade daggers, and tons of ivories. Who were these people? What did they believe in? And why did they bury such exquisite objects along with their dead?