Southern-Sòng devout Daoist disciple (fèngdào dìzǐ 奉道弟子), known only from his signed imprint-colophon (kānjì 刊記) dated Jǐngdìng 2 xīnyǒu 辛酉 (1261) summer, appended to Tàishàng xiūzhēn tǐ yuán miàodào jīng 太上修真體元妙道經 (DZ 41). After the death of the scripture’s original recipient Liú Yuánruì — who had received the scripture as a planchette-revelation from Yuánsù zhēnjūn 元素眞君 but allowed it to be secreted away in examination-hall-related official circles — Dǒng retrieved the family-preserved transcript, treasured it (其家所藏謄本正觀得而寳之), and engraved blocks to print it for circulation. His colophon is a careful and self-conscious specimen of Southern-Sòng Daoist printing practice: he explicitly notes that the scripture is written in tiānshū cǎoshèng 天書草聖 (“celestial writing in cursive sacred-script”) and cautions against variant-readings and errors in subsequent recopying, inviting correction by “persons of penetrating understanding.” No CBDB record exists, and no other work by Dǒng is attested.