Wèi Lìtóng 魏荔彤, zì Niàntíng 念庭, was a Yōngzhèng-period official and Yìjīng scholar from Bǎixiāng 柏鄉 (Zhàozhōu 趙州, modern Héběi 河北), the son of the Kāngxī-period Grand Secretary Wèi Yìjiè 魏裔介. He held office through Daotai (dào tái 道臺) of the Jiāngchángzhèn Circuit (江常鎮道, in Jiāngsū). The catalog meta places his attested period at fl. 1724.
His major Yìjīng work is the Dà Yì tōng jiě 大易通解 (KR1a0136) in fifteen juàn, composed after his removal from office. Methodologically the work is yìli-oriented and combines Sòng Lǐxué exposition with selective xiàngshù. He explicitly rejects two received commonplaces: (1) that the HétúLuòshū directly produced the Yì’s hexagrams (he holds only that they share principle); (2) that the trigram order Qián-1 Duì-2 Lí-3 Zhèn-4 Xùn-5 Kǎn-6 Gèn-7 Kūn-8 represents the actual order of generation. He develops a structural reading: upper scripture begins with QiánKūn with TàiPǐ as middle pivot; lower scripture begins with XiánHéng with SǔnYì as middle pivot — capturing the structural pivot of each section. He also offers a non-orthodox view of yīnyáng polarity, rejecting the standard “promote yáng, suppress yīn” rule on the grounds that yīn and yáng each contain jūnzǐ and xiǎorén respectively (a position the Sìkù editors regard as deliberate idiosyncrasy).
In addition to his Yìjīng scholarship, Wèi was an active medical writer. He authored two major Qīng ShānghánJīnguì commentaries: the Jīnguì yào lüè fāng lùn běn yì 金匱要略方論本義 (KR3ef084) and a Shānghán lùn běn yì 傷寒論本義 (the parallel Shānghán commentary), both in the “běn yì” 本義 (“original meaning”) genre — clause-by-clause exegesis aimed at recovering the canonical text’s authorial intent. Wèi’s Jīnguì běn yì is one of the principal eighteenth-century commentaries on the Jīnguì yào lüè and was substantially used by the editors of the Yī zōng jīn jiàn 醫宗金鑑.