Sanhuangjing
The Sanhuangjing (三皇經, Book of Three Emperors), also known as the Sanhuang Neiwen (三皇內文) or the Sanhuangwen (三皇文), is a fundamental Daoist book which claims those who chant it can become an emperor. The Daoist master Zheng Yin reportedly transmitted such texts as the Sanhuang Neiwen, which Zheng considered to be among the most important alchemical scriptures, to Ge Hong during the Jin dynasty.