Chéng Duānxué 程端學 (1278–1334), zì Shíshū 時叔, hào Jīzhāi 積齋, was a Yuán-period Chūnqiū scholar of Qìngyuán 慶元 (modern Níngbō 寧波, Zhèjiāng). He held the jìnshì degree of Yuán Tàidìng 1 (1324) and served in such posts as Hànlínyuàn guóshǐyuàn biānxiūguān 翰林國史院編修官 (Bibliographer of the Hànlín Historiography Office) and Guózǐ zhùjiào 國子助教 (Assistant Instructor at the Imperial College). CBDB id 28476: 1278–1334, dynasty Yuán; biographical references in Níngbō fǔzhì 寧波府志 17.1113 and Wèndào yīn 問道引, vol. 3, pp. 1422–3.
His scholarship is anchored in the Chūnqiū. Three works survive in the Sìkù: the Chūnqiū běnyì 春秋本義 in thirty juan (KR1e0060), the Chéngshì Chūnqiū huò wèn 程氏春秋或問 in ten juan (KR1e0061) — the dialectical companion to the Běnyì — and the Sānzhuàn biàn yí 三傳辨疑 in twenty juan (KR1e0062), an aggressive denunciation of the three zhuàn (especially the Zuǒ) as fabricated. Together they constitute the most extreme expression of the fèizhuàn 廢傳 (“dispense with the commentaries”) tendency in the SòngYuán Chūnqiū tradition descended from Sūn Fù 孫復, Liú Chǎng 劉敞, and Yè Mèngdé 葉夢得.
The Sìkù editors approved his rejection of the one-character praise-and-blame (yī zì bāobiǎn 一字褒貶) doctrine but rebuked his treatment of the Zuǒzhuàn as forgery and his uncritical insistence on a Xià-calendar reading of the Chūnqiū — a charge of “correcting bend with over-bend” (jiǎowǎng guòzhèng 矯枉過正).