Liáng Yùyú 梁玉瑜 (zì Yǒngcháng 詠常, late Qing physician, fl. Tóngzhì–Guāngxù era), Cantonese physician of Pānyú 番禺 (Guǎngdōng). Standard dates conventionally given as c. 1830–c. 1894. No CBDB record.
His one preserved work is the Yīxué dáwèn 醫學答問 (KR3eh030, 4 juǎn) — a question-and-answer (dáwèn 答問) digest of internal-medicine doctrine, recording his responses to his disciple Tāo BǎoLín 陶保廉’s questions on diagnosis, formula selection, and clinical reasoning. The work was edited and printed by Tāo in Lánzhōu in Guāngxù dīngyǒu = 1897 while accompanying his father Tāo Mó 陶模 (then governor-general of ShǎnGān) on his official posting.
The Yīxué dáwèn is notable for its sharp critique of the contemporary Lingnan medical mainstream’s over-reliance on mild píngdàn 平淡 prescribing, in continuity with the much earlier polemical stance of 何夢瑤 Hé Mèngyáo a century before.