Ní Tiānyǐn 倪天隱
Mid-Northern-Sòng jìnshì and Confucian scholar; student of Hú Yuán 胡瑗 (胡瑗). Lifedates not on record. Married a sister of Chén Xiāng 陳襄 (1017–1080) — recorded in Yè Zǔqià 葉祖洽’s xíngzhuàng of Chén Xiāng — placing his active life in the 1050s–1080s. Held the office of xiàn lìng 縣令 of Tónglú 桐廬 in Mùzhōu 睦州 (modern Zhèjiāng), a fact recorded in his stele-text Tónglú xiànlìng tímíng bēijì 桐廬縣令題名碑記 preserved in Dǒngshì Yánlíng jí 嚴陵集.
His sole surviving work is the redaction of his teacher Hú Yuán’s Zhōuyì kǒuyì 周易口義 (KR1a0012) — twelve juan of classroom-lectures by Hú on the Yì, which Ní took down and edited into the present textus. The title “Kǒuyì” (“Oral Meaning”) preserves the redactional fact that the work is master-from-pulpit recorded by student-in-class, not Hú’s personal composition. Cháo Gōngwǔ’s Dúshū zhì notes the diagnostic feature: the head of each entry begins with the formula “Master said” (xiānshēng yuē 先生曰).