Zēng Yì 曾益 (zì Yǔqiān 予謙), of Shānyīn 山陰 (modern Zhèjiāng Shàoxīng). Late-Míng Tiānqǐ (1621–1627) period literary scholar; biographical details unrecorded. He produced the first systematic late-Míng commentary on Wēn Tíngyún 溫庭筠 — the base layer of what became, through the additions of Gù Yǔxián 顧予咸 and the re-editing of Gù Sìlì 顧嗣立, the Wēn Fēiqīng shī jí jiānzhù (= KR4c0078).
Zēng’s commentary contained substantial errors — the Sìkù editors flag the misreading of Hàn huáng yíngchūn cí (Hàn Chéngdì confused with Hàn Gāozǔ) and the Hándān Guōgōng cí (mistaking the Northern-Qí yuèfǔ puppet-play title for a Guō Zǐyí shrine reference) as typical lapses. His original work was titled Bāchā jí 八叉集 (after Wēn’s fù-composition nickname) and merged the verse into 4 juǎn, departing from the 7-juǎn Sòng-print form. Gù Sìlì restored the Sòng-print structure and corrected most of Zēng’s errors.
CBDB has no matching entry. Zēng’s only documented work is the Wēn Tíngyún commentary — but it provided the foundation that the Sìkù editors selected for inclusion, with the Gù-family corrections.