The only known instance of a book from classical antiquity is Papyrus Oxyrhynchus 466 from the 2nd century CE, detailing Greek wrestling techniques. There are some examples in the Chinese classics that may predate the turn of the Common Era: the "Records of the Grand Historian" by Sima Qian (c. 100 BCE) documents wrestling, referring to earlier how-to manuals" of the Western Han (2nd century BCE), which have however not survived. An extant Chinese text on wrestling is "Six Chapters of Hand Fighting" included in the 1st century CE "Book of Han".