The Bamboo Annals , also known as the Ji Tomb Annals , is a chronicle of ancient China. It begins at the earliest legendary times (the Yellow Emperor) and extends to 299 BC, with the later centuries focusing on the history of the State of Wei in the Warring States period. It thus covers a similar period to Sima Qian's Records of the Grand Historian (91 BC). The original may have been lost during the Song dynasty, and the text is known today in two versions, a "current text" (or "modern text") of disputed authenticity and an incomplete "ancient text".