Huáng Rú 黃儒
Northern-Sòng tea-connoisseur, zì Dàofǔ 道輔 (Chén Zhènsūn’s Shūlù jiětí erroneously gives Dàofù 道父 — a copyist’s confusion of fǔ 輔 / fù 父, two graphs commonly confounded in personal-names). Native of Jiànān 建安 (modern Jiànōu 建甌, Fújiàn — the very source of the Sòng tribute-tea). Jìnshì of Xīníng 6 (1073).
His one surviving work, the Pǐnchá yàolù 品茶要錄 (KR3i0021) of c. 1073–1075, is the foundational treatise on the defects and adulterations of tea — distinct from the standard Sòng chálù tradition (which concentrates on production, brewing, and varieties), it focuses on the failure-modes: ten faults of tea-leaf manufacture, with the front-and-rear general discussions of identifying Hèyuán 壑源 vs Shāxī 沙溪 origins.
The Sòngshǐ Yìwénzhì does not record the work; it was first printed in the late Míng by Chéng Bǎiér 程百二 of Xīn’ān. A famous postface attributed to Sū Shì 蘇軾 (“Mr Huáng was broadly-learned and skilled in writing, but unfortunately died young”) survives only in the Dōngpō wàijí 東坡外集 — but that collection is itself a Ming pseudepigraph (per the Sìkù tíyào of the Jíbù), so the attribution cannot be trusted. Huáng’s life is otherwise undocumented; his early death is the only specific biographical particular.