Zhāng Wònán 張偓南 (fl. early 20th c.) was a physician of Wēixiàn 威縣, Héběi, who in 1915 acquired the manuscript scroll later known as the Dunhuang Fǔxíng jué zàngfǔ yòngyào fǎyào (KR3eh001) from a person said to have obtained it from 王圓籙 at Dūnhuáng. The scroll passed to his grandson 張大昌, who reconstructed the text from memory after the original’s destruction in 1966.