Yin Changsheng (Chinese: 陰長生; trans. "Long-life Yin", fl. AD 120–210) was a famous Daoist xian ("transcendent; immortal") from Xinye who lived during the Eastern Han dynasty (25-220 CE). After serving more than ten years as a disciple of the transcendent Maming Sheng ("Horse-neigh Sheng") he received the secret Taiqing (太清; "Great Clarity") scriptures on Waidan ("External Alchemy"). Several extant texts are ascribed to Yin Changsheng, such as the Jinbi wu xianglei can tong qi (金碧五相類參同契; "The Five Categories of Metals and Minerals in the Cantong qi").