The Taixuanjing is a divination guide composed by the Confucian writer Yang Xiong (53 BCE – 18 CE) in the decade prior to the fall of the Western Han dynasty. The first draft of this work was completed in 2 BCE; during the Jin dynasty, an otherwise unknown person named Fan Wang (范望) salvaged the text and wrote a commentary on it, from which our text survives today. Source: Wikipedia (en)