As for the "Yi Jin Jing" (Muscle Change Classic), a spurious text attributed to Bodhidharma and included in the legend of his transmitting martial arts at the temple, it was written in the Ming dynasty, in 1624, by the Daoist priest Zining of Mt. Tiantai, and falsely attributed to Bodhidharma. Forged prefaces, attributed to the Tang general Li Jing and the Southern Song general Niu Gao were written. They say that, after Bodhidharma faced the wall for nine years at Shaolin temple, he left behind an iron chest; when the monks opened this chest they found the two books "Xi Sui Jing" (Marrow Washing Classic) and "Yi Jin Jing" within. The first book was taken by his disciple Huike, and disappeared; as for the second, "the monks selfishly coveted it, practicing the skills therein, falling into heterodox ways, and losing the correct purpose of cultivating the Real. The Shaolin monks have made some fame for themselves through their fighting skill; this is all due to having obtained this manuscript". Based on this, Bodhidharma was claimed to be the ancestor of Shaolin martial arts. This manuscript is full of errors, absurdities and fantastic claims; it cannot be taken as a legitimate source