Eighteenth-century Qiántáng (Hángzhōu) scholar and lifelong kǎozhèng compiler. No precise lifedates available in CBDB or the standard sources; activity period bracketed by the Sìkù tíyào’s note that “at nearly one hundred suì he was still composing without stopping” and the work’s entry into the Sìkù collection in 1781. Author of KR3h0070 Liùyì zhī yī lù 六藝之一錄 (406 juàn + 14-juàn xùbiān), one of the largest single-author compendia in the Sìkù Yìshù class, a comprehensive collection of pre-Qīng calligraphy literature. Also author of the Zhōuyì éshù 周易蛾術 (entered separately in Sìkù KR1f); other works listed in the Sìkù tíyào (the Wén Déyì yōngchuī lù zhù and corrections to Lì Dàoyuán’s Shuǐjīng zhù) are no longer extant. The Sìkù tíyào emphasises Ní’s extreme poverty: too poor to hire scribes, he transcribed the entire 420-juàn compendium in his own hand with help from the women of his household.