Early- to mid-Táng official and lèishū compiler, native of Bǔzhōu Yúxiāng 蒲州虞鄉 (modern Yǒngjì 永濟, Shānxī); CBDB id 93526 (lifedates 612?–690, recorded floruit 667–698 there following the Tángdài rénwù zhīshí dé bēi-zi / Japanese Táng prosopographic database). He passed the jìnshì under Gāozōng, served in successive central capital posts, and held under Wǔ Zétiān the senior censorate appointment of Yùshǐ zhōngchéng 御史中丞 before being unjustly executed during the Lái Jùnchén 來俊臣 / Zhōu Xìng 周興 wave of political prosecutions in Yǒngchāng 1 (689) / Tiānshòu 1 (690); the Jiù Tángshū 187 (上, 忠義傳) records his upright stance and his death under Wǔ Zétiān’s clique of cruel officials. He is the author of the Hànyuàn 翰苑 (KR3k0070), composed in Xiǎnqìng 5 (660) — the date is supplied by the “Hòuxù” 後敘 (in fact a self-preface) preserved at the head of the surviving juan, which records the work’s conception in a dream of Confucius experienced in Tàiyuán 太原 on the third day of the third month. The preface also names his elder brother Yuèshí 越石 (Zhāng Yuèshí 張越石) as a participant in the dream-dialogue. The Hànyuàn was originally thirty juan; only juan 30 (the 蕃夷部 / Fānyí bù, “Frontier Peoples” section) survives, in an early-Heian manuscript copy preserved in Japan at Dazaifu Tenmangū. The work was annotated by 雍公叡; the annotations are at least as important as the body text and are the chief witness for many lost mid-third-century historiographical sources.