Wáng Sǔnzhī 王損之 (hào Qīzhēnzǐ 棲真子, “He Who Dwells in the Perfected”) was a Táng-period Daoist of the Xuánzhū 玄珠 commentarial school. The Daoist canon identifies him as the zhāngjù 章句 (chapter-and-verse annotator) of KR5b0280 (Xuánzhū xīnjìng zhù), in which he glosses the verses of the original Xuánzhū xīnjìng 玄珠心鏡 transmitted by Chángsūn Zī 長孫滋 (zì Jùzé 巨澤) of Mt. Wángwū 王屋. The text he annotates is a Táng-Daoist cúnyī 存一 (preserving the One) treatise built around the cautionary tale of the Yùhuáng shìshū tiānnǚ 玉皇侍書天女 (Heavenly Maid attending on the Jade Emperor’s writing) who fell into the human realm as Cuī Shàoxuán 崔少玄, wife of Lú Chuí 盧陲 — a story preserved by Cuī Gōng 崔恭, prefect of Fénzhōu 汾州. No CBDB record located for the pseudonym Qīzhēnzǐ. The catalog meta lists his transmitter as 長孫紫 — the source text gives 長孫滋, which is preferable; the variant 紫 is likely a copyist’s slip for 滋.