The Zhang Zhengsui 张正髓

Zhang Zhengsui, styled Baoshen, was a native of Guixi in Xinzhou who lived during the reigns of Emperors Zhenzong and Renzong of the Northern Song Dynasty.

He was the 24th Heavenly Master of the Zhengyi (Orthodox Unity) School of Taoism. In the eighth year of the Dazhong Xiangfu period of Emperor Zhenzong’s reign (1015), he was summoned to the imperial capital and conferred the title "Mr. Zhenjing" (Mr. True Tranquility). An Lu Yuan (Institution for Conferring Taoist Talismans and Titles) was built for him on Longhu Mountain, and by imperial decree, the Zhenxian Guan (True Immortal Taoist Temple) on Longyuan Mountain was renamed Shangqing Guan (Supreme Purity Taoist Temple). He widely transmitted the Zhengyi Taoist talismans and doctrines in the Jiangnan region (the area south of the Yangtze River).

In the 13th year of the Zhizheng period of the Yuan Dynasty (1353), he was posthumously granted the honorific title "Qingxu Guangjiao Miaoji Zhenjun" (True Lord of Pure Emptiness, Vast Teaching, and Wonderful Salvation) by imperial edict.

(From Hanshi Tianshi Shijia (Genealogy of the Heavenly Masters of the Han Clan))