The document summarizes the discovery of three tombs from the Han Dynasty in Changsha, China. In 1971, troops drilling for a new hospital unearthed flammable gas, which locals believed indicated a "fire tomb". Archaeological excavation from 1972-1973 uncovered three tombs containing well-preserved artifacts. Tomb 1 contained the body of Lady Dai, a noblewoman who died in 163 BC. The tombs held burial goods including philosophy, divination, medicine, and military texts along with maps. One item dated the burial to 168 BC, indicating it belonged to a powerful noble family from that era.