Zhāng Jìxiān 張繼先 (1092–1127), styled Xū jìng xiān sheng 虛靖先生, was the thirtieth Celestial Master (三十代天師) of the Lóng hǔ shān 龍虎山 Zhèng yī lineage. Despite his remarkably short life (35 years), he was one of the most influential figures of Northern-Sòng Daoism — patronised by Sòng Huī zōng, author of numerous ritual and doctrinal works, associated with the rise of the Thunder Rites (léi fǎ 雷法) ritual tradition. Author of KR5c0379 Míng zhēn pò wàng zhāng sòng 明真破妄章頌. Pseudepigraphically named as author of the late-imperial folk-Daoist talismanic-medical manual KR3en001 Zhùyóu kē zhū fú mì 祝由科諸符祕, where he appears under the form 張虛靖 (after his official Daoist title Xūjìng zhēnrén 虛靖真人).