LiángChén polymath, zì Xīféng 希馮, of Wújùn 吳郡 (modern Suzhou). Held offices including Huángmén shìláng and Tàixué bóshì under the Liáng; under the Chén rose to Huángmén shìláng and Guānglù qīng. He authored a wide range of works on geography, history, lexicography, and divination — most lost. His monumental contribution is the Yùpiān 玉篇 KR1j0022, the first post-Shuōwén Chinese character dictionary, presented Liáng Dàtóng 9 (543), in 30 juàn under 540 bùshǒu. The Yùpiān re-oriented the dictionary tradition away from seal-script archaeology toward usable kǎishū reference, with phonetic glosses, contemporary meanings, and simplified radical structure — and so became the basis of all later medieval zìshū. The work survives only in the much-altered Sòng Chóngxiūběn line; fragments of the original Liáng Yùpiān preserved in Japan (the Genshōji manuscript) and in Yǒnglè dàdiǎn citations are essential for reconstructing Gù’s original.