 The book has been faithfully transmitted since at least the time of the Tang dynasty, but the disparate number of existent chapters caused Qing dynasty scholars (in particular) to attack the book as spurious.Modern scholars generally support the text's authenticity.One of the alternative names for the book is ""The Methods of Sima Rangju"", based on Sima Qian's description of the work as being largely attributed to the famous fourth-century BC Qi general Sima Rangju.