Àixū Lǎorén 愛虛老人 (“Old Man Who Loves Emptiness,” fl. early 19th c.) is the pseudonym (hào) of the otherwise unidentified Qing compiler of the Gǔfāng huìjīng 古方彙精 (KR3ed056), a five-juǎn practical formulary of “essence of ancient formulas” published in 1804 by the Zūnréntáng 尊仁堂 at Jīngjiāng 京江 (Zhènjiāng 鎮江). The preface and editorial principles betray a literati editor working in the Jiāngsū lower-Yangtze cultural orbit, with strong sympathy for the late-Ming/early-Qing pharmaco-pedagogical tradition of Wāng Áng 汪昂 and Wú Yílù 吳儀洛. The author’s real name has not been recovered.