Fai (Complete Methods of the Numinous Treasure), a manual of longevity practices and neidan. Zuowanglun (坐忘論 ), a work on zuòwàng ("sitting forgetting") meditation by Sima Chengzhen (647–735) which is influenced by Buddhism. Huángdì Yǐnfújīng (黃帝陰符經, c. 8th century CE), a text on internal alchemy and astrology. Huàshū (化書), a 10th century classic on internal alchemy. Qīngjìng Jīng (清静经, Classic of Clarity and Stillness) which Daoist teachings from the Daodejing with Mahayana Buddhist ideas. The text was adopted as one of the key scriptures of the Quanzhen school. Yinfu jing (Scripture on the Inner Talisman), a sixth century text which was adopted by Quanzen school as one of their key scriptures. Wùzhēn piān (悟真篇, Folios on Awakening to Reality) is a work on internal alchemy written by Zhang Boduan (張伯端; 987?–1082), a Song era scholar of the three teachings. The Lijiao shiwu lun (Fifteen discourses to Establish the Teachings) of Wang Chongyang, the founder of Quanzhen. The Book of Balance and Harmony (Zhong he ji, 中和集) a 13th century anthology by Daochun Li which outlines the teachings and practices of the Quanzhen School. Taishang Ganying Pian (Treatise of the Exalted One on Response and Retribution, C. 12th century) discusses sin and ethics, and has become a popular morality tract in the last few centuries. It asserts that those in harmony with Tao will live long and fruitful lives. The wicked, and their descendants, will suffer and have shortened lives. The Secret of the Golden Flower (太乙金華宗旨; Tàiyǐ Jīnhuá Zōngzhǐ), an influential neidan text from the late 17th century. The key texts of the Dragon Gate School (Longmen Pai) composed by the founder Wang Changyue (1622?-80) which focus on Daoist monasticism: Chuzhen jie (Precepts for Novices), Zhongji jie (Precepts of the Central Pole), Tianxian jie (Precepts for Celestial Immortals) and Longmen xinfa (Central Teachings of Dragon Gate). The Daoist Canon The Taoist Canon (, Treasury of Tao) is also referred to as the Daozang. It was originally compiled during the Jin, Tang, and Song dynasties. The extant version was published during the Ming Dynasty. The Ming Daozang includes almost 1500 texts. Following the example of the Buddhist Tripiṭaka, it is divided into three dong (, "caves", "grottoes"). They are arranged from "highest" to "lowest": The Zhen ("real" or "truth" ) grotto. Includes the Shangqing texts. The Xuan ("mystery" ) grotto. Includes the Lingbao scriptures. The Shen ("divine" ) grotto. Includes texts