The modern Western fascination with Mo Pai began with the late Master (often referred to as Ie Chang Ming in the West) and his Western disciple, Stephen K. Chang . It was Stephen K. Chang who authored the seminal, yet famously elusive, book "Enter Mo Pai: The Ancient Art of Internal Alchemy."
However, if you are a collector of rare esoteric literature, a historian of Western Neo-Daoism, or a dedicated Nei Gong practitioner looking to cross-reference high-level techniques, then the is an invaluable artifact. Enter Mo Pai Pdf